Mybaties 快速入门

User类

public class User {
    private int id;
    private String username;
    private String password;

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + ''' +
                ", password='" + password + ''' +
                '}';
    }

UserMapper.xml

    
        select * from user
    

    
        insert into user values(#{id},#{username},#{password})
    

    
        update user set username=#{username},password=#{password} where id=#{id}
    

    
        delete from user where id=#{id}
    

sqlMapConfig.xml

Test类

import com.yby.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 java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;

public class MyBatiesTest {

    @Test
    public void test1() throws IOException {
        InputStream resourceAsStream = Resources.getResourceAsStream("sqlMapConfig.xml");
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(resourceAsStream);
        SqlSession sqlSession = sqlSessionFactory.openSession();

        //查询所有操作
        //List usrList = sqlSession.selectList("userMapper.findAll");
        //System.out.println(usrList);

        //插入操作
        //模拟User对象
        //User user = new User();
        //user.setUsername("lyh");
        //user.setPassword("0719");
        //sqlSession.insert("userMapper.save",user);
        //sqlSession.commit();//提交事务（对数据库修改的时候）

        //修改操作
        //模拟User对象
        //User user = new User();
        //user.setId(6);
        //user.setUsername("ypl");
        //user.setPassword("4567");
        //sqlSession.update("userMapper.update",user);
        //sqlSession.commit();

        //删除操作
        //sqlSession.delete("userMapper.delete",6);
        //sqlSession.commit();

        //释放资源
        sqlSession.close();

    }