Dubbo入门（一）

02-Dubbo简介

 

高并发远程调用用dubbo更好

03-入门案例：dubbo的内部结构

步骤

04-入门案例：安装nacos和监控中心

nacos  服务发现  服务配置的平台

nacos安装startup.cmd -m standalone

 

05-入门案例：需求说明

步骤

06-入门案例：编写Dubbo服务提供者

引入pom依赖

    
        org.projectlombok
        lombok
    
    
        org.springframework.boot
        spring-boot-starter-web
    
    
        mysql
        mysql-connector-java
    
    
    
        org.mybatis.spring.boot
        mybatis-spring-boot-starter
    

    
    
        org.apache.dubbo
        dubbo-spring-boot-starter
        2.7.8
    

    
        org.apache.dubbo
        dubbo-registry-nacos
        2.7.8
    

 编写引导类

package cn.itcast.user;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@MapperScan("cn.itcast.user.mapper")
@SpringBootApplication
public class UserProviderApplication {

    public static void main(String[] args) {
        SpringApplication.run(UserProviderApplication.class, args);
    }

}

把服务注解替换成dubboservice

package cn.itcast.user.service;


import cn.itcast.user.api.UserService;
import cn.itcast.user.domain.User;
import cn.itcast.user.mapper.UserMapper;
import org.apache.dubbo.config.annotation.DubboService;
import org.springframework.beans.factory.annotation.Autowired;

@DubboService
public class UserServiceImpl implements UserService {

    @Autowired
    private UserMapper userMapper;

	//根据id查询用户名称
    public String queryUsername(Long id) {
        return userMapper.findById(id).getUsername();
    }
}

yml配置

server:
  port: 18081
spring:
  datasource:
    url: jdbc:mysql://localhost:3306/dubbo-demo?useSSL=false
    username: root
    password: root
    driver-class-name: com.mysql.jdbc.Driver
  application:
    name: user-provider
logging:
  level:
    cn.itcast: debug
  pattern:
    dateformat: HH:mm:ss:SSS
dubbo:
  protocol:
    name: dubbo
    port: 20881
  registry:
    address: nacos://127.0.0.1:8848
  scan:
    base-packages: cn.itcast.user.service

07-入门案例：服务提供者总结

 

08-入门案例：编写Dubbo服务消费者

09-入门案例：抽取公共的接口模块

因为提供者和消费者的接口要一样，如果有一方改动会影响

所以抽取公共接口

10-入门案例：序列化

11-入门案例：总结