一，在接口中声明方法并把参数设为Map集合

package com.dao;

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

import java.util.List;
import java.util.Map;

public interface UserMapper {
   
    int addUser11(Map<String,Object> map);
}

二，在实现类中给Map赋值

package com.dao;

import com.pojo.User;
import com.uitl.BaseDaoUtil;
import org.apache.ibatis.session.SqlSession;
import org.junit.Test;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class UserMapperTest {
    
    @Test
    public void addUser11(){
        SqlSession sqlSession = BaseDaoUtil.openSqlSession();
        UserMapper mapper = sqlSession.getMapper(UserMapper.class);
        Map<String,Object> map = new HashMap<>();
        map.put("id",9);
        map.put("userName","阿峰");
        map.put("pwd","1231321");
        int i = mapper.addUser11(map);
        if (i ==0 ){
            System.out.println("失败");
        }else {
            System.out.println("添加成功");
        }
        sqlSession.close();
    }
}

三，在映射的 SQL 语句文件中编写相应的SQL语句

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dao.UserMapper">
    <insert id="addUser11" parameterType="map">
        insert into user (id,userName,pad ) values (#{id},#{userName},#{pwd});
    </insert>
</mapper>

其中 parameterType 应为map 因为是mybatis自动生成好的别名