package com.gyf.mapper;

import com.gyf.model.User;
import com.gyf.vo.UserQueryVO;
import java.util.List;
import java.util.Map;

public interface UserMapper {
    public List<User> findUserByMap(Map<String, Object> map);
}

<?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.gyf.mapper.UserMapper">
    <select id="findUserByMap" parameterType="hashmap" resultType="user">
        SELECT u.* FROM user u
        WHERE username like '%${username}%' and sex = #{sex}
    </select>
</mapper>

package com.gyf.test;

import com.gyf.mapper.UserMapper;
import com.gyf.model.User;
import com.gyf.vo.UserQueryVO;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class Demo05 {

    SqlSession session;

    @Before
    public void before() throws IOException {
        //讀取配置文件
        InputStream is = Resources.getResourceAsStream("SqlMapConfig.xml");
        //通過SqlSessionFactoryBuilder創(chuàng)建SqlSessionFactory會話工廠
        SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(is);
        session = sessionFactory.openSession();
    }

    @After
    public void after(){
        session.close();
    }
    
    @Test
    public void test2() throws IOException {
        //查找用戶
        //通過session拿到接口的代理，代理可以直接轉(zhuǎn)為接口
        UserMapper userMapper = session.getMapper(UserMapper.class);
        Map<String,Object> map = new HashMap<String, Object>();
        map.put("username","張");
        map.put("sex","1");
        List<User> users =  userMapper.findUserByMap(map);
        System.out.println(users);
    }
}