Spring---------Spring整合mybatis

• Spring整合MyBatis
• 一、项目框架
• 二、用Navicat在数据库中创建一张表t_user
• 三、 添加spring的一些jar包
• 四、 编写实体类User
• 五、使用步骤编写UserMapper接口
• 六、写service接口和相应的实现类
• • 1.service接口
  • 2.实现类
• 七.编写Spring配置文件
• 八、编写测试方法

示例：这里是spring整合Mybatis之后的架构图

package com.gzh.mapper;

import com.gzh.pojo.User;
import org.apache.ibatis.annotations.Param;
import org.apache.ibatis.annotations.Select;

import java.util.List;


public interface UserMapper {

    @Select("select * from t_user where uname=#{uname} and pwd = #{pwd}")
    User userLoginMapper(@Param("uname") String uname, @Param("pwd") String pwd);

    @Select("select * from t_user")
    List selectAll();
}

package com.gzh.service;

import com.gzh.pojo.User;

import java.util.List;


public interface UserLoginService {
//    User userLogin(String uname,String pwd);

    List findAll();
}

package com.gzh.service.impl;

import com.gzh.mapper.UserMapper;
import com.gzh.pojo.User;
import com.gzh.service.UserLoginService;

import java.util.List;


public class UserLoginServiceImpl  implements UserLoginService {

    private UserMapper userMapper;

    public UserMapper getUserMapper() {
        return userMapper;
    }

    public void setUserMapper(UserMapper userMapper) {
        this.userMapper = userMapper;
    }

 

    @Override
    public List findAll() {
        List users = userMapper.selectAll();

        return users;
    }
}

代码如下（示例）：

package com.gzh.test;

import com.gzh.mapper.UserMapper;
import com.gzh.pojo.User;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import java.util.List;


public class TestA {
    public static void main(String[] args) {
        ApplicationContext ac = new ClassPathXmlApplicationContext("spring.xml");
        UserMapper mapper = (UserMapper) ac.getBean("userMapper");
        List users = mapper.selectAll();

        for (User u : users){
            System.out.println("user="+u);
        }

    }
}

总结： 不太会说，就这样吧