完整的SpringBoot+Vue增删改查(学生管理)_html-js-css

md文档可在点击下方小卡片获取! 1.搭建环境 1.1 创建项目创建项目：exam-student-vue

1.2 添加坐标


    <parent>
        <groupId>org.springframework.bootgroupId>
        <artifactId>spring-boot-starter-parentartifactId>
        <version>2.1.6.RELEASEversion>
        <relativePath/> 
    parent>

    
    <properties>
        <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8project.reporting.outputEncoding>
        <java.version>1.8java.version>
        <mybatis.starter.version>1.3.2mybatis.starter.version>
        <mapper.starter.version>2.0.2mapper.starter.version>
        <mysql.version>5.1.32mysql.version>
        <pageHelper.starter.version>1.2.5pageHelper.starter.version>
        <durid.starter.version>1.1.10durid.starter.version>
    properties>

    
    <dependencies>

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-testartifactId>
        dependency>
        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-jdbcartifactId>
        dependency>
        
        <dependency>
            <groupId>org.mybatis.spring.bootgroupId>
            <artifactId>mybatis-spring-boot-starterartifactId>
            <version>${mybatis.starter.version}version>
        dependency>
        
        <dependency>
            <groupId>tk.mybatisgroupId>
            <artifactId>mapper-spring-boot-starterartifactId>
            <version>${mapper.starter.version}version>
        dependency>
        
        <dependency>
            <groupId>com.github.pagehelpergroupId>
            <artifactId>pagehelper-spring-boot-starterartifactId>
            <version>${pageHelper.starter.version}version>
        dependency>
        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>${mysql.version}version>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>druid-spring-boot-starterartifactId>
            <version>${durid.starter.version}version>
        dependency>
        
        <dependency>
            <groupId>io.springfoxgroupId>
            <artifactId>springfox-swagger2artifactId>
            <version>2.7.0version>
        dependency>
        <dependency>
            <groupId>io.springfoxgroupId>
            <artifactId>springfox-swagger-uiartifactId>
            <version>2.7.0version>
        dependency>

    dependencies>

1.3 拷贝properties文件

#端口号
server.port=8080

#数据库基本配置
spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://127.0.0.1:3306/db3?useUnicode=true&characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=1234

#druid 连接池配置
#驱动
#spring.datasource.driver-class-name=com.mysql.jdbc.Driver
#初始化连接池大小
spring.datasource.druid.initial-size=1
#最小连接数
spring.datasource.druid.min-idle=1
#最大连接数
spring.datasource.druid.max-active=20
#获取连接时候验证，会影响性能
spring.datasource.druid.test-on-borrow=true

# mybatis
# mybatis.type-aliases-package=com.czxy.domain.base
# mybatis.mapper-locations=classpath:mappers/*.xml
#mapper
mapper.not-empty=false
mapper.identity=MYSQL
#开启驼峰映射
mybatis.configuration.map-underscore-to-camel-case=true
mybatis.mapper-locations=classpath*:mapper/*.xml
#开启log4j打印SQL语句
logging.level.com.czxy.dao=debug

1.4 编写启动类

package com.czxy;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * @author manor
 *  
 */
@SpringBootApplication
public class StudentVueApplication {
    public static void main(String[] args) {
        SpringApplication.run(StudentVueApplication.class, args);
    }
}

1.5 拷贝封装类

1.6 拷贝配置类

2. 基本结构 2.1 初始化数据库 2.1.1 创建数据库

create database db1010;
use db1010;

2.1.2 建表语句

-- 班级表
create table tb_class(
  `c_id` varchar(32) primary key comment '班级ID',
  `c_name` varchar(50) comment '班级名称',
  `desc` varchar(200) comment '班级描述'
);
insert into tb_class(`c_id`,`c_name`,`desc`) values('c001','Java12班','。。。。');
insert into tb_class(`c_id`,`c_name`,`desc`) values('c002','Java34班','。。。。');

# 学生表
create table tb_student(
  s_id varchar(32) primary key comment '学生ID',
  sname varchar(50) comment '姓名',
  age int comment '年龄',
  birthday datetime comment '生日',
  gender char(1) comment '性别',
  c_id varchar(32)
);
alter table tb_student add constraint foreign key (c_id) references tb_class (c_id);

insert into tb_student(`s_id`,`sname`,`age`,`birthday`,`gender`,`c_id`) values('s001','赵三',19,'2001-01-17','1','c001');
insert into tb_student(`s_id`,`sname`,`age`,`birthday`,`gender`,`c_id`) values('s002','钱四',19,'2001-05-16','1','c001');
insert into tb_student(`s_id`,`sname`,`age`,`birthday`,`gender`,`c_id`) values('s003','孙五',18,'2002-03-15','1','c001');
insert into tb_student(`s_id`,`sname`,`age`,`birthday`,`gender`,`c_id`) values('s004','李三',19,'2001-04-14','0','c002');
insert into tb_student(`s_id`,`sname`,`age`,`birthday`,`gender`,`c_id`) values('s005','周四',19,'2001-02-13','0','c002');
insert into tb_student(`s_id`,`sname`,`age`,`birthday`,`gender`,`c_id`) values('s006','王五',18,'2002-06-12','1','c002');

2.2 后端实现：domain、Mapper

2.2.1 班级相关

JavaBean

package com.czxy.domain;

import javax.persistence.Column;
import javax.persistence.Id;
import javax.persistence.Table;

/**
 * @author manor
 *  
 */
@Table(name="tb_class")
public class Classes {
    @Id
    @Column(name="c_id")
    private String cid;

    @Column(name="c_name")
    private String cname;

    @Column(name="`desc`")
    private String desc;

    public String getCid() {
        return cid;
    }

    public void setCid(String cid) {
        this.cid = cid;
    }

    public String getCname() {
        return cname;
    }

    public void setCname(String cname) {
        this.cname = cname;
    }

    public String getDesc() {
        return desc;
    }

    public void setDesc(String desc) {
        this.desc = desc;
    }

    @Override
    public String toString() {
        return "Classes{" +
                "cid='" + cid + '\'' +
                ", cname='" + cname + '\'' +
                ", desc='" + desc + '\'' +
                '}';
    }
}

Mapper

package com.czxy.mapper;

import com.czxy.domain.Classes;
import tk.mybatis.mapper.common.Mapper;

/**
 * @author manor
 *  
 */
@org.apache.ibatis.annotations.Mapper
public interface ClassesMapper extends Mapper<Classes> {
}

2.2.2 学生相关

JavaBean

package com.czxy.domain;

import com.fasterxml.jackson.annotation.JsonFormat;

import javax.persistence.Column;
import javax.persistence.Id;
import javax.persistence.Table;
import java.util.Date;

/**
 * @author manor
 *  
 */
@Table(name="tb_student")
public class Student {

    @Id
    @Column(name="s_id")
    private String sid;         //学生ID

    @Column(name="sname")
    private String sname;         //姓名

    @Column(name="age")
    private Integer age;         //年龄

    @Column(name="birthday")
    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
    private Date birthday;         //生日

    @Column(name="gender")
    private String gender;      //性别

    @Column(name="c_id")
    private String cid;         //班级外键

    private Classes classes;    //班级对象

    public String getSid() {
        return sid;
    }

    public void setSid(String sid) {
        this.sid = sid;
    }

    public String getSname() {
        return sname;
    }

    public void setSname(String sname) {
        this.sname = sname;
    }

    public Integer getAge() {
        return age;
    }

    public void setAge(Integer age) {
        this.age = age;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public String getCid() {
        return cid;
    }

    public void setCid(String cid) {
        this.cid = cid;
    }

    public Classes getClasses() {
        return classes;
    }

    public void setClasses(Classes classes) {
        this.classes = classes;
    }

    @Override
    public String toString() {
        return "Student{" +
                "sid='" + sid + '\'' +
                ", sname='" + sname + '\'' +
                ", age=" + age +
                ", birthday=" + birthday +
                ", gender='" + gender + '\'' +
                ", cid='" + cid + '\'' +
                ", classes=" + classes +
                '}';
    }
}

Mapper

package com.czxy.mapper;

import com.czxy.domain.Student;
import tk.mybatis.mapper.common.Mapper;

/**
 * @author manor
 *  
 */
@org.apache.ibatis.annotations.Mapper
public interface StudentMapper extends Mapper<Student> {

}

3.后端实现 3.1 班级后端

3.1.1 查询所有班级

service

package com.czxy.service;

import com.czxy.domain.Classes;
import com.czxy.domain.Student;
import com.czxy.mapper.ClassesMapper;
import com.czxy.mapper.StudentMapper;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import tk.mybatis.mapper.entity.Example;

import javax.annotation.Resource;
import java.util.List;

/**
 * @author manor
 *  
 */
@Service
@Transactional
public class ClassesService {

    @Resource
    private ClassesMapper classesMapper;
    @Resource
    private StudentMapper studentMapper;

    /**
     * 查询所有
     * @return
     */
    public List<Classes> findAll() {
        List<Classes> list = classesMapper.selectAll();
        return list;
    }
}

controller

package com.czxy.controller;

import com.czxy.domain.Classes;
import com.czxy.service.ClassesService;
import com.czxy.vo.BaseResult;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import java.util.List;

/**

@author manor

*/
@RestController
@RequestMapping("/classes")
public class ClassesController {

  @Resource
  private ClassesService classesService;

  /**
   * 查询所有
   * @return
   */
  @GetMapping
  public BaseResult findAll(){
      // 查询
      List list = classesService.findAll();
      // 返回
      return BaseResult.ok("查询成功", list );
  }

}




### 3.1.2 添加班级

* service

~~~java
    /**
     * 添加班级
     * @param classes
     * @return
     */
    public boolean save(Classes classes) {
        // 校验
        Classes find = classesMapper.selectByPrimaryKey(classes.getCid());
        if(find != null){
            throw new RuntimeException("ID已存在");
        }
        // 添加
        int count = classesMapper.insert(classes);
        return count == 1;
    }

controller

/**
     * 添加班级
     * @param classes
     * @return
     */
    @PostMapping
    public BaseResult save(@RequestBody Classes classes){
        try {
            // 添加
            boolean result = classesService.save(classes);
            // 返回
            if(result){
                return BaseResult.ok("添加成功");
            } else {
                return BaseResult.error("添加失败");
            }
        } catch (Exception e) {
            return BaseResult.error(e.getMessage());
        }
    }

3.1.3 查询班级详情

service

    /**
     * 查询详情
     * @param classId
     * @return
     */
    public Classes findById(String classId){
        Classes classes = classesMapper.selectByPrimaryKey(classId);
        return classes;
    }

controller

	/**
     * 查询详情
     * @param classId
     * @return
     */
    @GetMapping("/{id}")
    public BaseResult findById(@PathVariable("id") String classId ){
        // 查询
        Classes classes = classesService.findById(classId);

        if(classes != null) {
            // 返回
            return BaseResult.ok("查询成功", classes);
        } else {
            return BaseResult.error("查询失败");
        }
    }

3.1.4 更新班级

service

    /**
     * 更新 *** 作
     * @param classes
     * @return
     */
    public boolean update(Classes classes){
        // 校验
        Classes find = classesMapper.selectByPrimaryKey(classes.getCid());
        if(find == null){
            throw new RuntimeException("ID不存在");
        }
        // 更新非空项
        int count = classesMapper.updateByPrimaryKeySelective(classes);
        return count == 1;
    }

controller

    /**
     * 更新 *** 作
     * @param classes
     * @return
     */
    @PutMapping
    public BaseResult update(@RequestBody Classes classes){
        try {
            // 添加
            boolean result = classesService.update(classes);
            // 返回
            if(result){
                return BaseResult.ok("更新成功");
            } else {
                return BaseResult.error("更新失败");
            }
        } catch (Exception e) {
            return BaseResult.error(e.getMessage());
        }
    }

3.1.5 删除班级

service

    /**
     * 通过id删除详情
     * @param classId
     * @return
     */
    public boolean deleteById(String classId) {
        // 查询指定班级id的学生数
        Example example = new Example(Student.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo("cid", classId);
        int studentCount = studentMapper.selectCountByExample(example);
        if(studentCount > 0) {
            throw new RuntimeException("班级已关联学生，不能删除");
        }

        int count = classesMapper.deleteByPrimaryKey(classId);
        return count == 1;
    }

controller

    /**
     * 查询详情
     * @param classId
     * @return
     */
    @DeleteMapping("/{id}")
    public BaseResult deleteById(@PathVariable("id") String classId ){
        try {
            // 查询
            boolean result = classesService.deleteById(classId);
            // 返回
            if(result){
                return BaseResult.ok("删除成功");
            } else {
                return BaseResult.error("删除失败");
            }
        } catch (Exception e) {
            return BaseResult.error(e.getMessage());
        }
    }

3.2 学生后端

3.1.1 查询所有学生

StudentVo

package com.czxy.vo;

/**
 * @author manor
 *  
 */
public class StudentVo {
    private String cid;     //班级
    private String sname;       //姓名
    private String startAge;    //开始年龄
    private String endAge;      //结束年龄

    public String getCid() {
        return cid;
    }

    public void setCid(String cid) {
        this.cid = cid;
    }

    public String getSname() {
        return sname;
    }

    public void setSname(String sname) {
        this.sname = sname;
    }

    public String getStartAge() {
        return startAge;
    }

    public void setStartAge(String startAge) {
        this.startAge = startAge;
    }

    public String getEndAge() {
        return endAge;
    }

    public void setEndAge(String endAge) {
        this.endAge = endAge;
    }

    @Override
    public String toString() {
        return "StudentVo{" +
                "cid='" + cid + '\'' +
                ", sname='" + sname + '\'' +
                ", startAge='" + startAge + '\'' +
                ", endAge='" + endAge + '\'' +
                '}';
    }
}

service

package com.czxy.service;

import com.czxy.domain.Classes;
import com.czxy.domain.Student;
import com.czxy.mapper.ClassesMapper;
import com.czxy.mapper.StudentMapper;
import com.czxy.vo.StudentVo;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import tk.mybatis.mapper.entity.Example;

import javax.annotation.Resource;
import java.util.List;

/**
 * @author manor
 *  
 */
@Service
@Transactional
public class StudentService {

    @Resource
    private StudentMapper studentMapper;

    @Resource
    private ClassesMapper classesMapper;


    /**
     * 查询所有 + 分页
     * @return
     */
    public PageInfo<Student> findAllByCondition(StudentVo studentVo, Integer pageSize, Integer pageNum){
        // 拼凑条件
        Example example = new Example(Student.class);
        Example.Criteria criteria = example.createCriteria();
        if(studentVo != null){
            //等值查询
            if(studentVo.getCid() != null && !"".equals(studentVo.getCid())) {
                criteria.andEqualTo("cid",studentVo.getCid());
            }
            // 模糊查询
            if(studentVo.getSname() != null && !"".equals(studentVo.getSname())) {
                criteria.andLike("sname","%"+studentVo.getSname()+"%");
            }
            // 区间查询
            if(studentVo.getStartAge() != null && !"".equals(studentVo.getStartAge())){
                criteria.andGreaterThanOrEqualTo("age",studentVo.getStartAge());
            }
            if(studentVo.getEndAge() != null && !"".equals(studentVo.getEndAge())) {
                criteria.andLessThanOrEqualTo("age",studentVo.getEndAge());
            }
        }

        // 分页
        PageHelper.startPage(pageNum,pageSize);

        // 条件查询
        List<Student> list = studentMapper.selectByExample(example);

        // 关联查询
        for(Student student : list){
            // 查询班级外键对应的对象
            Classes classes = classesMapper.selectByPrimaryKey(student.getCid());
            student.setClasses(classes);
        }

        // 分页封装
        PageInfo pageInfo = new PageInfo(list);
        return pageInfo;
    }
}

controller

package com.czxy.controller;

import com.czxy.domain.Student;
import com.czxy.service.StudentService;
import com.czxy.vo.BaseResult;
import com.czxy.vo.StudentVo;
import com.github.pagehelper.PageInfo;
import org.springframework.web.bind.annotation.*;

import javax.annotation.Resource;
import java.util.List;

/**
 * @author manor
 *  
 */
@RestController
@RequestMapping("/student")
public class StudentController {

    @Resource
    private StudentService studentService;

    /**
     * 条件查询
     * @param studentVo
     * @return
     */
    @PostMapping("/condition/{pagesize}/{pagenum}")
    public BaseResult conditioin(@RequestBody StudentVo studentVo, @PathVariable("pagesize") Integer pagesize , @PathVariable("pagenum") Integer pagenum){
        // 添加
        PageInfo<Student> pageInfo = studentService.findAllByCondition(studentVo,pagesize,pagenum);
        // 返回
        return BaseResult.ok("查询成功", pageInfo);
    }
}

3.1.2 添加学生

service

    /**
     * 添加学生
     * @param student
     * @return
     */
    public boolean save(Student student){
        // 校验
        Student find = studentMapper.selectByPrimaryKey(student.getSid());
        if(find != null) {
            throw new RuntimeException("ID已存在");
        }
        // 添加
        int count = studentMapper.insert(student);
        return count == 1;
    }

controller

    /**
     * 添加学生
     * @param student
     * @return
     */
    @PostMapping
    public BaseResult save(@RequestBody Student student){
        try {
            // 添加
            boolean result = studentService.save(student);
            // 返回
            if(result){
                return BaseResult.ok("添加成功");
            } else {
                return BaseResult.error("添加失败");
            }
        } catch (Exception e) {
            return BaseResult.error(e.getMessage());
        }
    }

3.1.3 查询学生详情

service

    /**
     * 查询详情
     * @param studentId
     * @return
     */
    public Student findById(String studentId){
        Student student = studentMapper.selectByPrimaryKey(studentId);
        return student;
    }

controller

    /**
     * 查询详情
     * @param studentId
     * @return
     */
    @GetMapping("/{id}")
    public BaseResult findById(@PathVariable("id") String studentId ){
        // 查询
        Student student = studentService.findById(studentId);
        if(student != null){
            // 返回
            return BaseResult.ok("查询成功", student);
        } else {
            return BaseResult.error("查询失败");
        }
    }

3.1.4 更新学生

service

    /**
     * 更新 *** 作
     * @param student
     * @return
     */
    public boolean update(Student student){
        // 校验
        Student find = studentMapper.selectByPrimaryKey(student.getSid());
        if(find == null) {
            throw new RuntimeException("ID不存在");
        }
        // 更新非空项
        int count = studentMapper.updateByPrimaryKeySelective(student);
        return count == 1;
    }

controller

    /**
     * 更新 *** 作
     * @param student
     * @return
     */
    @PutMapping
    public BaseResult update(@RequestBody Student student){
        try {
            // 添加
            boolean result = studentService.update(student);
            // 返回
            if(result){
                return BaseResult.ok("更新成功");
            } else {
                return BaseResult.error("更新失败");
            }
        } catch (Exception e) {
            return BaseResult.error(e.getMessage());
        }
    }

3.1.5 删除学生

service

     /**
     * 通过id删除详情
     * @param studentId
     * @return
     */
    public boolean deleteById(String studentId) {
        int count = studentMapper.deleteByPrimaryKey(studentId);
        return count == 1;
    }

controller

    /**
     * 通过id删除
     * @param studentId
     * @return
     */
    @DeleteMapping("/{id}")
    public BaseResult deleteById(@PathVariable("id") String studentId ){
        // 查询
        boolean result = studentService.deleteById(studentId);
        // 返回
        if(result){
            return BaseResult.ok("删除成功");
        } else {
            return BaseResult.error("删除失败");
        }
    }

4. 前端实现：Vue版项目前端目录结构

使用Visual Studio Code 开发前端页面

4.1 班级前端 4.1.1 查询所有

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>班级列表title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

head>
<body>
    <div id="app">
        <a href="index.html">返回首页a>
        <a href="classes_add.html">添加班级a> <br/>
    
        <table id="tid" border="1" width="800">
            <tr>
                <td>班级IDtd>
                <td>班级名称td>
                <td>班级描述td>
                <td> *** 作td>
            tr>
            <tr v-for="(classes,index) in classesList" :key="index">
                <td>{{classes.cid}}td>
                <td>{{classes.cname}}td>
                <td>{{classes.desc}}td>
                <td>
                    <a href="">修改a>
                    <a href="">删除a>
                td>
            tr>
        table>
    div>
body>
html>
<script>
        new Vue({
            el: '#app',
            data: {
                classesList: [],       //班级数据
            },
            mounted() {
                // 查询所有
                this.findAll()
            },
            methods: {
                findAll() {
                    var url = `/classes`;
                    axios.get(url)
                    .then( response => {
                        if(response.data.code == 1){
                            this.classesList = response.data.data
                        } else {
                            alert(response.data.message)
                        }
                    })
                    .catch(error => {
                        alert(error)
                    })
                }
            },
        })
    script>

4.1.2 添加

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>班级列表title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

<body>
head>
    <div id="app">
        <a href="classes_list.html">返回列表页a>
    
        <table id="tid" border="1">
            <tr>
                <td>班级IDtd>
                <td><input v-model="classes.cid" /> td>
            tr>
            <tr>
                <td>班级名称td>
                <td><input  v-model="classes.cname" /> td>
            tr>
            <tr>
                <td>班级描述td>
                <td>
                    <textarea cols="20" rows="5" v-model="classes.desc" >textarea>
                td>
            tr>
            <tr>
                <td>td>
                <td><input type="button" value="添加" @click="addClasses" />td>
            tr>
    
        table>
    div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            classes: {},       //学生表单数据
        },
        mounted() {
            
        },
        methods: {
            addClasses() {
                var url = `/classes`;
                axios.post(url, this.classes)
                .then( response => {
                    if(response.data.code == 1){
                        // 成功提示
                        alert(response.data.message)
                        // 跳转
                        location.href = "classes_list.html"
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            }
        },
    })
script>

4.1.3 修改

跳转页面

<a :href="'classes_edit.html?id=' + classes.cid">修改a>

回显

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>班级列表title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

<body>
head>
    <div id="app">
        <a href="classes_list.html">返回列表页a>
    
        <table id="tid" border="1">
            <tr>
                <td>班级名称td>
                <td>
                    <input v-model="classes.cname" />
                td>
            tr>
            <tr>
                <td>班级描述td>
                <td>
                    <textarea cols="20" rows="5" v-model="classes.desc" >textarea>
                td>
            tr>
            <tr>
                <td>td>
                <td><input type="button" value="更新" />td>
            tr>
    
        table>
    div>

body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            classes: {},       //学生表单数据
        },
        mounted() {
            // 通过id查询详情
            this.findById()
        },
        methods: {
            findById() {
                // 获得id
                var arr = location.href.split("?id=")
                var id = arr[1]
                // 路径
                var url = `/classes/${id}`;

                axios.get(url)
                .then( response => {
                    if(response.data.code == 1){
                        this.classes = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            }
        },
    })
script>

提交

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>班级列表title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

<body>
head>
    <div id="app">
        <a href="classes_list.html">返回列表页a>
    
        <table id="tid" border="1">
            <tr>
                <td>班级名称td>
                <td>
                    <input v-model="classes.cname" />
                td>
            tr>
            <tr>
                <td>班级描述td>
                <td>
                    <textarea cols="20" rows="5" v-model="classes.desc" >textarea>
                td>
            tr>
            <tr>
                <td>td>
                <td><input type="button" value="更新" @click="editClasses" />td>
            tr>
    
        table>
    div>

body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            classes: {},       //学生表单数据
        },
        mounted() {
            // 通过id查询详情
            this.findById()
        },
        methods: {
            findById() {
                // 获得id
                var arr = location.href.split("?id=")
                var id = arr[1]
                // 路径
                var url = `/classes/${id}`;

                axios.get(url)
                .then( response => {
                    if(response.data.code == 1){
                        this.classes = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            },
            editClasses() {
                var url = `/classes`;
                axios.put(url, this.classes)
                .then( response => {
                    if(response.data.code == 1){
                        // 成功提示
                        alert(response.data.message)
                        // 跳转
                        location.href = "classes_list.html"
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            }
        },
    })
script>

4.1.4 删除

修改 classes_list.html 页面，填写修改功能

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>班级列表title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

head>
<body>
    <div id="app">
        <a href="index.html">返回首页a>
        <a href="classes_add.html">添加班级a> <br/>
    
        <table id="tid" border="1" width="800">
            <tr>
                <td>班级IDtd>
                <td>班级名称td>
                <td>班级描述td>
                <td> *** 作td>
            tr>
            <tr v-for="(classes,index) in classesList" :key="index">
                <td>{{classes.cid}}td>
                <td>{{classes.cname}}td>
                <td>{{classes.desc}}td>
                <td>
                    <a :href="'classes_edit.html?id=' + classes.cid">修改a>
                    <a href="#" @click="deleteClasses(classes.cid)">删除a>
                td>
            tr>
        table>
    div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            classesList: [],       //班级数据
        },
        mounted() {
            // 查询所有
            this.findAll()
        },
        methods: {
            findAll() {
                var url = `/classes`;
                axios.get(url)
                .then( response => {
                    if(response.data.code == 1){
                        this.classesList = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            },
            deleteClasses(id) {
                if(! confirm("您确定要删除么？")){
                    return 
                }
                // 删除
                var url = `/classes/${id}`;
                axios.delete(url)
                .then( response => {
                    if(response.data.code == 1){
                        // 成功提示
                        alert(response.data.message)
                        // 跳转
                        location.href = "classes_list.html"
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            }
        },
    })
script>

4.2 学生前端 4.2.1 查询所有 1）查询 + 条件 + 分页

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>班级列表title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

head>
<body>
    <div id="app">
        <a href="index.html">返回首页a>
        <a href="student_add.html">添加学生a> <br/>
        
        <table>
            <tr>
                <td>班级td>
                <td>
                    <select v-model="student.cid">
                        <option value="">--选择班级--option>
                        <option value="c001">--Java12--option>
                        <option value="c002">--Java34--option>
                    select>
                td>
                <td>姓名：td>
                <td>
                    <input type="text" placeholder="请输入姓名" v-model="student.sname"size="10">
                td>
                <td>年龄：td>
                <td>
                    <input type="text" placeholder="请输入开始年龄" v-model="student.startAge" size="10">
                    --
                    <input type="text" placeholder="请输入结束年龄" v-model="student.endAge" size="10">
                td>
                <td><input type="button" value="查询" @click="condition(1)">td>
            tr>
        table>
        
        
        <table id="tid" border="1" width="800">
            <tr>
    
                <td>学生IDtd>
                <td>班级IDtd>
                <td>学生姓名td>
                <td>年龄td>
                <td>生日td>
                <td>性别td>
                <td> *** 作td>
            tr>
           <tr v-for="(student,index) in pageInfo.list" :key="index">
                <td>{{student.sid}}td>
                <td>{{student.classes.cname}}td>
                <td>{{student.sname}}td>
                <td>{{student.age}}td>
                <td>{{student.birthday}}td>
                <td>{{student.gender == 1 ? "男" : "女"}}td>
                <td>
                    <a href="">修改a>
                    <a href="">删除a>
                td>
            tr>
        table>
    
        
        <div id="pageId">
            <a href="#" v-for="index in pageInfo.pages" :key="index" @click.prevent="condition(index)" >{{index}}a> 
        div>

    div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            pageSize: 2,        //每页多少条
            student: {          //表单对象

            },
            pageInfo: {},       //分页对象
        },
        mounted() {
            // 查询所有
            this.condition(1)
        },
        methods: {
            condition(pageNum) {
                var url = `/student/condition/${this.pageSize}/${pageNum}`;
                axios.post(url, this.student)
                .then( response => {
                    if(response.data.code == 1){
                        this.pageInfo = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                })
            }
        },
    })
script>

2）查询条件，下拉列表

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>班级列表title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

head>
<body>
    <div id="app">
        <a href="index.html">返回首页a>
        <a href="student_add.html">添加学生a> <br/>
        
        <table>
            <tr>
                <td>班级td>
                <td>
                    <select v-model="student.cid">
                        <option value="">--选择班级--option>
                        <option v-for="(classes,index) in classesList" :key="index" :value="classes.cid">{{classes.cname}}option>
                    select>
                td>
                <td>姓名：td>
                <td>
                    <input type="text" placeholder="请输入姓名" v-model="student.sname"size="10">
                td>
                <td>年龄：td>
                <td>
                    <input type="text" placeholder="请输入开始年龄" v-model="student.startAge" size="10">
                    --
                    <input type="text" placeholder="请输入结束年龄" v-model="student.endAge" size="10">
                td>
                <td><input type="button" value="查询" @click="condition(1)">td>
            tr>
        table>

        
        <table id="tid" border="1" width="800">
            <tr>
    
                <td>学生IDtd>
                <td>班级IDtd>
                <td>学生姓名td>
                <td>年龄td>
                <td>生日td>
                <td>性别td>
                <td> *** 作td>
            tr>
           <tr v-for="(student,index) in pageInfo.list" :key="index">
                <td>{{student.sid}}td>
                <td>{{student.classes.cname}}td>
                <td>{{student.sname}}td>
                <td>{{student.age}}td>
                <td>{{student.birthday}}td>
                <td>{{student.gender == 1 ? "男" : "女"}}td>
                <td>
                    <a href="">修改a>
                    <a href="">删除a>
                td>
            tr>
        table>
    
        
        <div id="pageId">
            <a href="#" v-for="index in pageInfo.pages" :key="index" @click.prevent="condition(index)" >{{index}}a> 
        div>

    div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            pageSize: 2,        //每页多少条
            student: {          //表单对象
                cid: ''
            },
            pageInfo: {},       //分页对象
            classesList: []     //班级列表
        },
        mounted() {
            // 查询所有
            this.condition(1)
            // 查询所有班级
            this.findAllClasses()
        },
        methods: {
            condition(pageNum) {
                var url = `/student/condition/${this.pageSize}/${pageNum}`;
                axios.post(url, this.student)
                .then( response => {
                    if(response.data.code == 1){
                        this.pageInfo = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                })
            },
            findAllClasses() {
                var url = `/classes`;
                axios.get(url)
                .then( response => {
                    if(response.data.code == 1){
                        this.classesList = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            }
        },
    })
script>

3）跳转

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>班级列表title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

head>
<body>
    <div id="app">
        <a href="index.html">返回首页a>
        <a href="student_add.html">添加学生a> <br/>
        
        <table>
            <tr>
                <td>班级td>
                <td>
                    <select v-model="student.cid">
                        <option value="">--选择班级--option>
                        <option v-for="(classes,index) in classesList" :key="index" :value="classes.cid">{{classes.cname}}option>
                    select>
                td>
                <td>姓名：td>
                <td>
                    <input type="text" placeholder="请输入姓名" v-model="student.sname"size="10">
                td>
                <td>年龄：td>
                <td>
                    <input type="text" placeholder="请输入开始年龄" v-model="student.startAge" size="10">
                    --
                    <input type="text" placeholder="请输入结束年龄" v-model="student.endAge" size="10">
                td>
                <td><input type="button" value="查询" @click="condition(1)">td>
            tr>
        table>

        
        <table id="tid" border="1" width="800">
            <tr>
    
                <td>学生IDtd>
                <td>班级IDtd>
                <td>学生姓名td>
                <td>年龄td>
                <td>生日td>
                <td>性别td>
                <td> *** 作td>
            tr>
           <tr v-for="(student,index) in pageInfo.list" :key="index">
                <td>{{student.sid}}td>
                <td>{{student.classes.cname}}td>
                <td>{{student.sname}}td>
                <td>{{student.age}}td>
                <td>{{student.birthday}}td>
                <td>{{student.gender == 1 ? "男" : "女"}}td>
                <td>
                    <a href="">修改a>
                    <a href="">删除a>
                td>
            tr>
        table>
    
        
        <div id="pageId">
            <a href="#" v-for="index in pageInfo.pages" :key="index" @click.prevent="condition(index)" >{{index}}a> 
            跳转到第 <input type="text" v-model="pageNum" size="5" @keydown.enter="go" />页
        div>

    div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            pageSize: 2,        //每页多少条
            pageNum: 1,         //第几页
            student: {          //表单对象
                cid: ''
            },
            pageInfo: {},       //分页对象
            classesList: []     //班级列表
        },
        mounted() {
            // 查询所有
            this.condition(1)
            // 查询所有班级
            this.findAllClasses()
        },
        methods: {
            condition(pageNum) {
                var url = `/student/condition/${this.pageSize}/${pageNum}`;
                axios.post(url, this.student)
                .then( response => {
                    if(response.data.code == 1){
                        this.pageInfo = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                })
            },
            findAllClasses() {
                var url = `/classes`;
                axios.get(url)
                .then( response => {
                    if(response.data.code == 1){
                        this.classesList = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            },
            go() {
                if(parseInt(this.pageNum) == this.pageNum) {
                    this.condition(this.pageNum)
                }
            }
        },
    })
script>

4）改变分页pageSize

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>班级列表title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

head>
<body>
    <div id="app">
        <a href="index.html">返回首页a>
        <a href="student_add.html">添加学生a> <br/>
        
        <table>
            <tr>
                <td>班级td>
                <td>
                    <select v-model="student.cid">
                        <option value="">--选择班级--option>
                        <option v-for="(classes,index) in classesList" :key="index" :value="classes.cid">{{classes.cname}}option>
                    select>
                td>
                <td>姓名：td>
                <td>
                    <input type="text" placeholder="请输入姓名" v-model="student.sname"size="10">
                td>
                <td>年龄：td>
                <td>
                    <input type="text" placeholder="请输入开始年龄" v-model="student.startAge" size="10">
                    --
                    <input type="text" placeholder="请输入结束年龄" v-model="student.endAge" size="10">
                td>
                <td><input type="button" value="查询" @click="condition(1)">td>
            tr>
        table>

        
        <table id="tid" border="1" width="800">
            <tr>
    
                <td>学生IDtd>
                <td>班级IDtd>
                <td>学生姓名td>
                <td>年龄td>
                <td>生日td>
                <td>性别td>
                <td> *** 作td>
            tr>
           <tr v-for="(student,index) in pageInfo.list" :key="index">
                <td>{{student.sid}}td>
                <td>{{student.classes.cname}}td>
                <td>{{student.sname}}td>
                <td>{{student.age}}td>
                <td>{{student.birthday}}td>
                <td>{{student.gender == 1 ? "男" : "女"}}td>
                <td>
                    <a href="">修改a>
                    <a href="">删除a>
                td>
            tr>
        table>
    
        
        <div id="pageId">
            每页
            <select v-model="pageSize" @change="condition(1)">
                <option value="1">1option>
                <option value="2">2option>
                <option value="5">5option>
                <option value="10">10option>
            select>条，

            <a href="#" v-for="index in pageInfo.pages" :key="index" @click.prevent="condition(index)" >{{index}}a> 
            ，跳转到第 <input type="text" v-model="pageNum" size="5" @keydown.enter="go" />页
        div>

    div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            pageSize: 2,        //每页多少条
            pageNum: 1,         //第几页
            student: {          //表单对象
                cid: ''
            },
            pageInfo: {},       //分页对象
            classesList: []     //班级列表
        },
        mounted() {
            // 查询所有
            this.condition(1)

            // 查询所有班级
            this.findAllClasses()
        },
        methods: {
            condition(pageNum) {
                var url = `/student/condition/${this.pageSize}/${pageNum}`;
                axios.post(url, this.student)
                .then( response => {
                    if(response.data.code == 1){
                        this.pageInfo = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                })
            },
            findAllClasses() {
                var url = `/classes`;
                axios.get(url)
                .then( response => {
                    if(response.data.code == 1){
                        this.classesList = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            },
            go() {
                if(parseInt(this.pageNum) == this.pageNum) {
                    this.condition(this.pageNum)
                }
            }
        },
    })
script>

4.2.2 添加

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>班级列表title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

<body>
head>
    <div id="app">

        <a href="student_list.html">返回列表页a>
    
        <table id="tid" border="1">
            <tr>
                <td>学生td>
                <td><input v-model="student.sid" /> td>
            tr>
            <tr>
                <td>班级IDtd>
                <td>
                    
                    <select v-model="student.cid">
                        <option value="">--请选择--option>
                        <option v-for="(classes,index) in classesList" :key="index" :value="classes.cid">{{classes.cname}}option>
                    select>
                td>
            tr>
            <tr>
                <td>姓名td>
                <td><input v-model="student.sname"/> td>
            tr>
            <tr>
                <td>年龄td>
                <td><input v-model="student.age" /> td>
            tr>
            <tr>
                <td>生日td>
                <td><input v-model="student.birthday"/> td>
            tr>
            <tr>
                <td>性别td>
                <td>
                    <input type="radio" v-model="student.gender" value="1" />男
                    <input type="radio" v-model="student.gender" value="0" />女
                td>
            tr>
            <tr>
                <td>td>
                <td><input type="button" value="添加" @click="addStudent"/>td>
            tr>

        table>
    div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            student: {          //表单对象
                cid: ''
            },
            classesList: []     //班级列表
        },
        mounted() {

            // 查询所有班级
            this.findAllClasses()
        },
        methods: {

            findAllClasses() {
                var url = `/classes`;
                axios.get(url)
                .then( response => {
                    if(response.data.code == 1){
                        this.classesList = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            },
            addStudent() {
                var url = `/student`;
                axios.post(url, this.student)
                .then( response => {
                    if(response.data.code == 1){
                        // 成功提示
                        alert(response.data.message)
                        // 跳转
                        location.href = "student_list.html"
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            },

        },
    })
script>

4.2.3 修改

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>编辑学生title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

<body>
head>
<div id="app">

    <a href="student_list.html">返回列表页a>

    <table id="tid" border="1">
        <tr>
            <td>学生td>
            <td><input v-model="student.sid" /> td>
        tr>
        <tr>
            <td>班级IDtd>
            <td>
                
                <select v-model="student.cid">
                    <option value="">--请选择--option>
                    <option v-for="(classes,index) in classesList" :key="index" :value="classes.cid">{{classes.cname}}option>
                select>
            td>
        tr>
        <tr>
            <td>姓名td>
            <td><input v-model="student.sname"/> td>
        tr>
        <tr>
            <td>年龄td>
            <td><input v-model="student.age" /> td>
        tr>
        <tr>
            <td>生日td>
            <td><input v-model="student.birthday"/> td>
        tr>
        <tr>
            <td>性别td>
            <td>
                <input type="radio" v-model="student.gender" value="1" />男
                <input type="radio" v-model="student.gender" value="0" />女
            td>
        tr>
        <tr>
            <td>td>
            <td><input type="button" value="添加" @click="editStudent"/>td>
        tr>

    table>
div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            student: {          //表单对象
                cid: ''
            },
            classesList: []     //班级列表
        },
        mounted() {

            // 查询所有班级
            this.findAllClasses()
        },
        methods: {

            findAllClasses() {
                var url = `/classes`;
                axios.get(url)
                .then( response => {
                    if(response.data.code == 1){
                        this.classesList = response.data.data
                        // 查询详情
                        this.findById()
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            },
            findById() {
                // 获得id
                var arr = location.href.split("?id=")
                var id = arr[1]
                // 路径
                var url = `/student/${id}`;

                axios.get(url)
                .then( response => {
                    if(response.data.code == 1){
                        this.student = response.data.data
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            },
            editStudent() {
                var url = `/student`;
                axios.put(url, this.student)
                .then( response => {
                    if(response.data.code == 1){
                        // 成功提示
                        alert(response.data.message)
                        // 跳转
                        location.href = "student_list.html"
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            },

        },
    })
script>

4.2.4 删除

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>班级列表title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

head>
<body>
<div id="app">
    <a href="index.html">返回首页a>
    <a href="student_add.html">添加学生a> <br/>
    
    <table>
        <tr>
            <td>班级td>
            <td>
                <select v-model="student.cid">
                    <option value="">--选择班级--option>
                    <option v-for="(classes,index) in classesList" :key="index" :value="classes.cid">{{classes.cname}}option>
                select>
            td>
            <td>姓名：td>
            <td>
                <input type="text" placeholder="请输入姓名" v-model="student.sname"size="10">
            td>
            <td>年龄：td>
            <td>
                <input type="text" placeholder="请输入开始年龄" v-model="student.startAge" size="10">
                --
                <input type="text" placeholder="请输入结束年龄" v-model="student.endAge" size="10">
            td>
            <td><input type="button" value="查询" @click="condition(1)">td>
        tr>
    table>

    
    <table id="tid" border="1" width="800">
        <tr>

            <td>学生IDtd>
            <td>班级IDtd>
            <td>学生姓名td>
            <td>年龄td>
            <td>生日td>
            <td>性别td>
            <td> *** 作td>
        tr>
        <tr v-for="(student,index) in pageInfo.list" :key="index">
            <td>{{student.sid}}td>
            <td>{{student.classes.cname}}td>
            <td>{{student.sname}}td>
            <td>{{student.age}}td>
            <td>{{student.birthday}}td>
            <td>{{student.gender == 1 ? "男" : "女"}}td>
            <td>
                <a :href="'student_edit.html?id='+student.sid">修改a>
                <a href="#" @click.prevent="deleteStudent(student.sid)">删除a>
            td>
        tr>
    table>

    
    <div id="pageId">
        每页
        <select v-model="pageSize" @change="condition(1)">
            <option value="1">1option>
            <option value="2">2option>
            <option value="5">5option>
            <option value="10">10option>
        select>条，

        <a href="#" v-for="index in pageInfo.pages" :key="index" @click.prevent="condition(index)" >{{index}}a>
        ，跳转到第 <input type="text" v-model="pageNum" size="5" @keydown.enter="go" />页
    div>

div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            pageSize: 2,        //每页多少条
            pageNum: 1,         //第几页
            student: {          //表单对象
                cid: ''
            },
            pageInfo: {},       //分页对象
            classesList: []     //班级列表
        },
        mounted() {
            // 查询所有
            this.condition(1)
            this.condition(1)
            this.condition(1)
            this.condition(1)
            // 查询所有班级
            this.findAllClasses()
        },
        methods: {
            condition(pageNum) {
                var url = `/student/condition/${this.pageSize}/${pageNum}`;
                axios.post(url, this.student)
                    .then( response => {
                        if(response.data.code == 1){
                            this.pageInfo = response.data.data
                        } else {
                            alert(response.data.message)
                        }
                    })
                    .catch(error => {
                    })
            },
            findAllClasses() {
                var url = `/classes`;
                axios.get(url)
                    .then( response => {
                        if(response.data.code == 1){
                            this.classesList = response.data.data
                        } else {
                            alert(response.data.message)
                        }
                    })
                    .catch(error => {
                        alert(error)
                    })
            },
            go() {
                if(parseInt(this.pageNum) == this.pageNum) {
                    this.condition(this.pageNum)
                }
            },
            deleteStudent(id) {
                if(! confirm("您确定要删除么？")){
                    return
                }
                // 删除
                var url = `/student/${id}`;
                axios.delete(url)
                    .then( response => {
                        if(response.data.code == 1){
                            // 成功提示
                            alert(response.data.message)
                            // 跳转
                            location.href = "student_list.html"
                        } else {
                            alert(response.data.message)
                        }
                    })
                    .catch(error => {
                        alert(error)
                    })
            }
        },
    })
script>

5. 用户 *** 作 5.1 建表语句

create table tb_user(
  u_id varchar(32) primary key comment '用户编号',
  user_name varchar(50) comment '用户名',
  password varchar(32) comment '密码',
  gender bit comment '性别,1表示男，0表示女'
);
insert into tb_user(u_id,user_name,password,gender) values('u001','jack','1234',1);
insert into tb_user(u_id,user_name,password,gender) values('u002','rose','1234',0);
insert into tb_user(u_id,user_name,password,gender) values('u003','张三','1234',1);

5.2 后端实现：domain、mapper

domain

package com.czxy.domain;

import javax.persistence.Column;
import javax.persistence.Id;
import javax.persistence.Table;

/**
 * @author manor
 *  
 */
@Table(name = "tb_user")
public class User {
    @Id
    @Column(name = "u_id")
    private String uid;         //用户编号

    @Column(name = "user_name")
    private String username;     //用户名

    @Column(name = "password")
    private String password;         //密码

    @Column(name = "gender")
    private Integer gender;         //性别,1表示男，0表示女

    public String getUid() {
        return uid;
    }

    public void setUid(String uid) {
        this.uid = uid;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public Integer getGender() {
        return gender;
    }

    public void setGender(Integer gender) {
        this.gender = gender;
    }

    @Override
    public String toString() {
        return "User{" +
                "uid='" + uid + '\'' +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                ", gender=" + gender +
                '}';
    }
}

mapper

package com.czxy.mapper;

import com.czxy.domain.User;
import tk.mybatis.mapper.common.Mapper;

/**
 * @author manor
 *  
 */
@org.apache.ibatis.annotations.Mapper
public interface UserMapper extends Mapper<User> {
}

5.3 用户注册 5.3.1 分析用户注册，其实就是添加功能

5.3.2 后端实现

编写service，用户名存在不允许注册

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package com.czxy.service;

import com.czxy.domain.User;
import com.czxy.mapper.UserMapper;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import tk.mybatis.mapper.entity.Example;

import javax.annotation.Resource;

/**
 * @author manor
 *  
 */
@Service
@Transactional
public class UserService {

    @Resource
    private UserMapper userMapper;

    /**
     * 用户注册
     * @param user
     * @return
     */
    public boolean register(User user){
        // 校验：用户名
        User findUser = findByUsername(user.getUsername());
        if(findUser != null){
            throw new RuntimeException("用户名已存在");
        }

        // 添加
        int count = userMapper.insert(user);

        // 返回
        return count == 1;
    }

    /**
     * 通过用户名查询
     * @param username
     * @return
     */
    public User findByUsername(String username){
        // 拼凑条件
        Example example = new Example(User.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo("username", username);

        // 查询
        User user = userMapper.selectOneByExample(example);
        return user;
    }

}

编写controller

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package com.czxy.controller;

import com.czxy.domain.User;
import com.czxy.service.UserService;
import com.czxy.vo.BaseResult;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

/**
 * @author manor
 *  
 */
@RestController
@RequestMapping("/user")
public class UserController {

    @Resource
    private UserService userService;

    /**
     * 用户注册
     * @param user
     * @return
     */
    @PostMapping("/register")
    public BaseResult register(@RequestBody User user) {
        try {
            // 注册
            boolean result = userService.register(user);

            // 返回
            if(result){
                return BaseResult.ok("注册成功");
            } else {
                return BaseResult.error("注册失败");
            }
        } catch (Exception e) {
            return BaseResult.error(e.getMessage());
        }
    }

}

5.3.3 前端实现

修改首页，跳转到注册页面

<a href="user_register.html">注册a> |

编写注册功能：注册成功跳转到首页

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>用户注册title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

<body>
head>
    <div id="app">
        <a href="index.html">返回首页a>
    
        <table id="tid" border="1">
            <tr>
                <td>用户名td>
                <td><input v-model="user.username" /> td>
            tr>
            <tr>
                <td>密码td>
                <td><input type="password" v-model="user.password" /> td>
            tr>
            <tr>
                <td>性别td>
                <td>
                    <input type="radio" v-model="user.gender" value="1"> 男
                    <input type="radio" v-model="user.gender" value="0"> 女
                td>
            tr>
            <tr>
                <td>td>
                <td><input type="button" value="注册" @click="register" />td>
            tr>
    
        table>
    div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            user: {},       //用户表单数据
        },
        methods: {
            register() {
                var url = `/user/register`;
                axios.post(url, this.user)
                .then( response => {
                    if(response.data.code == 1){
                        // 成功提示
                        alert(response.data.message)
                        // 跳转
                        location.href = "index.html"
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            }
        },
    })
script>

5.4 用户登录 5.4.1 分析用户登录，也是就是一个通过用户名和密码的查询功能 5.4.2 后端实现

修改service，添加login方法

/**
     * 用户登录
     * @param user
     * @return
     */
    public User login (User user){
        // 校验：用户名
        User findUser = findByUsername(user.getUsername());
        if(findUser == null){
            throw new RuntimeException("用户名不存在");
        }

        // 登录条件
        Example example = new Example(User.class);
        Example.Criteria criteria = example.createCriteria();
        criteria.andEqualTo("username", user.getUsername());
        criteria.andEqualTo("password", user.getPassword());

        // 查询
        User loginUser = userMapper.selectOneByExample(example);
        return loginUser;
    }

修改controller，添加login 方法

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    /**
     * 用户注册
     * @param user
     * @return
     */
    @PostMapping("/login")
    public BaseResult login(@RequestBody User user) {
        try {
            // 注册
            User loginUser = userService.login(user);

            // 返回
            if(loginUser != null ){
                // 需要将用户信息响应给浏览器
                return BaseResult.ok("登录成功", loginUser);
            } else {
                return BaseResult.error("用户名或密码不匹配");
            }
        } catch (Exception e) {
            return BaseResult.error(e.getMessage());
        }
    }

5.4.3 localStorage&sessionStorage详解 localStorage和sessionStorage都是window对象提供的全局属性，在浏览器中存储key/value对的数据 localStorage，本地存储，浏览器窗口关闭后，数据保留。sessionStorage，会话存储，浏览器窗口关闭后，数据删除。基本 *** 作：存储数据、查询数据、删除数据

	功能	实例
localStorage	存储数据	localStorage.setItem(“键”,“值”)
	查询数据	localStorage.getItem(“键”)
	删除数据	localStorage.removeItem(“键”)
sessionStorage	存储数据	sessionStorage.setItem(“键”,“值”)
	查询数据	sessionStorage.getItem(“键”)
	删除数据	sessionStorage.removeItem(“键”)

5.4.4 前端实现

修改首页

<a href="user_login.html">注册a> |

编写登录页面

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>用户登录title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

<body>
head>
    <div id="app">
        <a href="index.html">返回首页a>
    
        <table id="tid" border="1">
            <tr>
                <td>用户名td>
                <td><input v-model="user.username" /> td>
            tr>
            <tr>
                <td>密码td>
                <td><input type="password" v-model="user.password" /> td>
            tr>
            <tr>
                <td>td>
                <td><input type="button" value="登录" @click="login" />td>
            tr>
    
        table>
    div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            user: {},       //用户表单数据
        },
        methods: {
            login() {
                var url = `/user/login`;
                axios.post(url, this.user)
                .then( response => {
                    if(response.data.code == 1){
                        // 成功提示
                        alert(response.data.message)
                        // 将用户信息记录到浏览器
                        var userStr = JSON.stringify(response.data.data)
                        localStorage.setItem("loginUser", userStr)
                        // 跳转
                        location.href = "index.html"
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            }
        },
    })
script>

5.4.5 首页优化

修改index.html页面

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>首页title>
    <script type="text/javascript" src="js/vue.js">script>
head>
<body>
    <div id="app">
        <a href="classes_list.html">班级管理a> |
        <a href="student_list.html">学生管理a> |
        <span v-if="loginUser != null">
            
            欢迎 {{loginUser.username}} ，
            <a href="#">退出a> |
        span>
        <span v-if="loginUser == null">
            
            <a href="user_register.html">注册a> |
            <a href="user_login.html">登录a> |
        span>
    div>
    
body>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            loginUser: null,       //登录用户信息
        },
        mounted() {
            var userStr = localStorage.getItem("loginUser")
            if(userStr){
                this.loginUser = JSON.parse(userStr)
            }
        },
        
    })
script>

5.5 用户注销

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>首页title>
    <script type="text/javascript" src="js/vue.js">script>
head>
<body>
    <div id="app">
        <a href="classes_list.html">班级管理a> |
        <a href="student_list.html">学生管理a> |
        <span v-if="loginUser != null">
            
            欢迎 {{loginUser.username}} ，
            <a href="#" @click.prevent="logout">退出a> |
        span>
        <span v-if="loginUser == null">
            
            <a href="user_register.html">注册a> |
            <a href="user_login.html">登录a> |
        span>
    div>
    
body>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            loginUser: null,       //登录用户信息
        },
        mounted() {
            var userStr = localStorage.getItem("loginUser")
            if(userStr){
                this.loginUser = JSON.parse(userStr)
            }
        },
        methods: {
            logout() {
                localStorage.removeItem("loginUser")
                location.href = "index.html"
            }
        },
        
    })
script>

5.6 用户注册前校验 5.6.1 分析

5.6.2 后端实现修改 UserController

   /**
     * 用户名校验
     * @param user
     * @return
     */
    @PostMapping("/checkname")
    public BaseResult checkname(@RequestBody User user) {
        try {
            // 注册
            User findUser = userService.findByUsername(user.getUsername());

            // 返回
            if(findUser == null ){
                return BaseResult.ok("用户名可用");
            } else {
                return BaseResult.error("用户名不可用");
            }
        } catch (Exception e) {
            return BaseResult.error(e.getMessage());
        }
    }

5.6.3 前端实现修改注册页面

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>用户注册title>

    <script type="text/javascript" src="js/vue.js">script>
    <script type="text/javascript" src="js/axios.js">script>

    <style>
        .red {
            color: red;
        }
        .green {
            color: green;
        }
    style>

<body>
head>
<div id="app">
    <a href="index.html">返回首页a>

    <table id="tid" border="1">
        <tr>
            <td>用户名td>
            <td>
                <input v-model="user.username" @blur="checkname" />
                <span :class="{'red': result.code == 0,'green': result.code == 1}" >{{result.message}}span>
            td>
        tr>
        <tr>
            <td>密码td>
            <td><input type="password" v-model="user.password" /> td>
        tr>
        <tr>
            <td>性别td>
            <td>
                <input type="radio" v-model="user.gender" value="1"> 男
                <input type="radio" v-model="user.gender" value="0"> 女
            td>
        tr>
        <tr>
            <td>td>
            <td><input type="button" :disabled="result.code==0" value="注册" @click="register" />td>
        tr>

    table>
div>
body>
html>
<script>
    new Vue({
        el: '#app',
        data: {
            user: {},       //用户表单数据
            result: {       //查询结果
                code: 0
            }      
        },
        methods: {
            register() {
                var url = `/user/register`;
                axios.post(url, this.user)
                .then( response => {
                    if(response.data.code == 1){
                        // 成功提示
                        alert(response.data.message)
                        // 跳转
                        location.href = "index.html"
                    } else {
                        alert(response.data.message)
                    }
                })
                .catch(error => {
                    alert(error)
                })
            },
            checkname() {
                var url = `/user/checkname`;
                axios.post(url, this.user)
                .then( response => {
                    // 记录查询结果
                    this.result = response.data
                })
                .catch(error => {
                    alert(error)
                })
            }
        },
    })
script>

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原文地址:https://54852.com/web/1321494.html

完整的SpringBoot+Vue增删改查(学生管理)

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