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 mapperPUBLIC "-//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*/@Testpublic 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

總結

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