单元测试

package com.example.aninbatisdemo;
import java.io.InputStream;
import com.example.aninbatis.sqlsession.SqlSessionFactory;
import com.example.aninbatis.sqlsession.SqlSessionFactoryBuilder;
import com.example.aninbatis.utils.Resources;
import com.example.aninbatisdemo.mapper.UserMapper;
import com.example.aninbatisdemo.mapper.UserMapperImpl;
import com.example.aninbatisdemo.pojo.User;
import org.junit.jupiter.api.Test;
public class UserDaoTest {
    /**
     * 测试使用手写mybatis框架去实现的
     */
    @Test
    public void testQueryUserById() {
         // 全局配置文件
        String resource = "SqlMapConfig.xml";
        InputStream inputStream = Resources.getResourceAsStream(resource);
        // SqlSessionFactory的创建可能有几种创建方式，但是我还是不想要知道SqlSessionFactory的构造细节
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        UserMapper userMapper = new UserMapperImpl(sqlSessionFactory);
        User param = new User();
        param.setId(1);
        User user = userMapper.queryUserById(param);
        System.out.println(user);
    }
}

输出

 >>>>>>>>>>>>>> 执行sql:select * from `user` where id = ? 
 >>>>>>>>>>>>>> 参数:User(id=1, name=null)
User(id=1, name=张三)