Mybatis多參數封裝到map中，多條件查詢

1.UserMapper接口

package com.william.dao;

import com.william.domain.QueryValueObject;
import com.william.domain.User;

import java.util.List;

public interface UserMapper {
    /**
     * 多參數封裝到map中，多條件查詢
     * @param map
     * @return
     */
    List<User> findByConditionByMap(HashMap<String, Object> map);

}

2.UserMapper.xml

<?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.william.dao.UserMapper">
   <!--多參數封裝到map中，多條件查詢-->
    <select id="findByConditionByMap" parameterType="map" resultType="user">
        select * from user where username like "%"#{username}"%" and sex=#{sex}
       limit #{startIndex},#{pageSize}
    </select>
</mapper>

3.TestCrud測試類

package com.william;

import com.william.dao.UserMapper;
import com.william.domain.QueryValueObject;
import com.william.domain.User;
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.Test;

import javax.annotation.Resource;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;

/**
 * @author ：lijunxuan
 * @date ：Created in 2019/7/12  10:16
 * @description ：
 * @version: 1.0
 */
public class TestCrud {
 
    /**
     * 多參數封裝到map中，多條件查詢
     * @throws IOException
     */
    @Test
    public void findByConditionByMap() throws IOException {
        InputStream inputStream = Resources.getResourceAsStream("Mybatis-configuration.xml");
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        SqlSession sqlSession = sqlSessionFactory.openSession();
        //獲取某接口的動態代理對象（獲取某接口的一個實現類）
        UserMapper userMapper = sqlSession.getMapper(UserMapper.class);
        QueryValueObject queryValueObject = new QueryValueObject();
        HashMap<String, Object> map = new HashMap<>();
        map.put("username","a");
        map.put("sex","男");
        map.put("startIndex",0);
        map.put("pageSize",6);
        List<User> userMapperByConditionByMap = userMapper.findByConditionByMap(map);
        for (User user1 : userMapperByConditionByMap) {
            System.out.println(user1);
        }
        sqlSession.close();
    }
}

4.測試結果