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"http://mybatis.org/dtd/mybatis-3-config.dtd">

2.
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">











select * from tb_user


select * from tb_user where username=#{username}


insert into tb_user values (default,#{username},#{password},#{email},#{gender},#{nickname},#{photo})


delete from tb_user where username=#{username}


update tb_user set password=#{password} where username=#{username}

3.package com.lin;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.function.Supplier;

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 com.lin.dao.UserDao;
import com.lin.model.User;

/**

• Unit test for simple App.
  */
  public class AppTest {
  public static void main(String[] args) throws IOException {
  //通过输入流 读取配置文件
  InputStream in = Resources.getResourceAsStream("mybatis-config.xml");
  //建立sql会话工厂
  SqlSessionFactory factory = new SqlSessionFactoryBuilder().build(in);
  SqlSession session = factory.openSession();
  UserDao userDao = session.getMapper(UserDao.class);
  // List userList = userDao.findAll();
  // for (User user : userList) {
  // System.out.println(user.getUsername());
  // }
  User user = new User();
  user.setUsername("admin");
  user.setPassword("123123");
  userDao.update(user);
  session.commit();

}

}