搭建SSM开发环境实现增删改查（IDEA）

搭建SSM开发环境实现增删改查（IDEA） 基础环境搭建 创建maven工程

next,finish，等待创建完成，创建完成后，src/main下只有webapp文件夹，我们需要手动创建java和resources,鼠标右击main,new folder,将java改成Sources类型，resources变成Resources类型

引入项目依赖

• spring
• springmvc
• mybatis
• 数据库连接池，驱动
• 其它（jstl,servlet-api,junit）

编写ssm整合的配置文件 web.xml

添加约束

配置spring，springmvc，字符过滤器，Restful URI

    
        contextConfigLocation
        classpath:applicationContext.xml
    
    
        org.springframework.web.context.ContextLoaderListener
    

    
    
        dispatcherServlet
        org.springframework.web.servlet.DispatcherServlet
        1
    
    
        dispatcherServlet
        /
    

    
    
        CharacterEncodingFilter
        org.springframework.web.filter.CharacterEncodingFilter
        
            encoding
            utf-8
        
        
            forceRequestEncoding
            true
        
        
            forceResponseEncoding
            true
        
    
    
        CharacterEncodingFilter
        

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations={"classpath:applicationContext.xml"})
public class MapperTest {
	
	@Autowired
	DepartmentMapper departmentMapper;
	
	@Autowired
	EmployeeMapper employeeMapper;
	
	@Autowired
	SqlSession sqlSession;
	
	
	@Test
	public void testCRUD(){
		//1、插入几个部门
//		departmentMapper.insertSelective(new Department(null, "开发部"));
//		departmentMapper.insertSelective(new Department(null, "测试部"));
		
		//2、生成员工数据，测试员工插入
		//employeeMapper.insertSelective(new Employee(null, "Jerry", "M", "Jerry@atguigu.com", 2));
		
		//3、批量插入多个员工；批量，使用可以执行批量 *** 作的sqlSession。
		
		EmployeeMapper mapper = sqlSession.getMapper(EmployeeMapper.class);
		for(int i = 0;i<1000;i++){
			String uid = UUID.randomUUID().toString().substring(0,5)+i;
			mapper.insertSelective(new Employee(null,uid, "M", uid+"@163.com", 3));
		}
		System.out.println("批量完成");
		
	}

}