其代码示例：

package com.gyf.test;

import com.gyf.model.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.After;
import org.junit.Before;
import org.junit.Test;

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

public class Demo02 {
    SqlSession session;
    @Before
    public void before() throws IOException {
        //读取配置文件
        InputStream is = Resources.getResourceAsStream("SqlMapConfig.xml");
        //通过SqlSessionFactoryBuilder创建SqlSessionFactory会话工厂
        SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(is);
        //通过SqlSessionFactory创建SqlSession
        session = sessionFactory.openSession();
    }

    @After
    public void after(){
        session.close();
    }
    @Test
    public void test1() throws IOException {
//		查询单条结果
//        User user = session.selectOne("findUserById",1);
//        System.out.println(user);

        //查询多条结果
        List<User> users = session.selectList("findUserByName", "张");
        System.out.println(users);
        session.commit();

    }

xml配置文件代码：

<?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="user">
    <!--通过Id查询用户-->
    <select id="findUserById"  parameterType="int" resultType="com.gyf.model.User">
        select * from user where id = #{id}
    </select>
    <!-- 通过名字查询用户-->
    <select id="findUserByName" parameterType="String" resultType="com.gyf.model.User">
        select * from user where username like '%${value}%'
    </select>
</mapper>