MybatisMapper 映射框架（增删改查 原始模式）

//增删改查

package TestDemo;

import java.io.IOException;
import java.io.InputStream;
import java.util.Date;
import java.util.List;

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 cn.jy.mybatis.pojo.User;

public class MybatisMapperTest {
//@Test
//public void fun() throws IOException{
//    //1加载核心配置文件
//    String re="sqlMapConfig.xml";
//    InputStream resourceAsStream = Resources.getResourceAsStream(re);
//    //创建SqlSessionFactory
//    SqlSessionFactory build = new SqlSessionFactoryBuilder().build(resourceAsStream);
//    //创建回话
//    SqlSession openSession = build.openSession();
//    Object selectOne = openSession.selectOne("test.findUserById",10);
//    System.out.println(selectOne);
//}
    
    
//    @Test
//    public void fun() throws IOException{
//        //1加载核心配置文件
//        String re="sqlMapConfig.xml";
//        InputStream resourceAsStream = Resources.getResourceAsStream(re);
//        //创建SqlSessionFactory
//        SqlSessionFactory build = new SqlSessionFactoryBuilder().build(resourceAsStream);
//        //创建回话
//        SqlSession openSession = build.openSession();
//        List<User> selectList = openSession.selectList("test.findUserByUserName","小明");
//        for(User a:selectList){
//             System.out.println(a);
//        }
//       
//    }
    //插入一条数据
//    @Test
//    public void fun() throws IOException{
//        //1加载核心配置文件
//        String re="sqlMapConfig.xml";
//        InputStream resourceAsStream = Resources.getResourceAsStream(re);
//        //创建SqlSessionFactory
//        SqlSessionFactory build = new SqlSessionFactoryBuilder().build(resourceAsStream);
//        //创建回话
//        SqlSession openSession = build.openSession();
//       User u=new User();
//       u.setUsername("张无忌");
//       u.setBirthday(new Date());
//       u.setAddress("郑州杨金路");
//       u.setSex("男");
//       int insert = openSession.insert("test.insertUser",u);
//       openSession.commit();
//       System.out.println(insert);
//    }
    
    //更新数据
//    @Test
//    public void fun() throws IOException{
//        //1加载核心配置文件
//        String re="sqlMapConfig.xml";
//        InputStream resourceAsStream = Resources.getResourceAsStream(re);
//        //创建SqlSessionFactory
//        SqlSessionFactory build = new SqlSessionFactoryBuilder().build(resourceAsStream);
//        //创建回话
//        SqlSession openSession = build.openSession();
//       User u=new User();
//       u.setId(27);
//       u.setUsername("张无忌666");
//       u.setBirthday(new Date());
//       u.setAddress("郑州杨金路qy95");
//       u.setSex("男");
//       int update = openSession.update("test.updateUserById",u);
//       openSession.commit();
//       System.out.println(update);
//    }
    //删除数据
    @Test
    public void fun() throws IOException{
        //1加载核心配置文件
        String re="sqlMapConfig.xml";
        InputStream resourceAsStream = Resources.getResourceAsStream(re);
        //创建SqlSessionFactory
        SqlSessionFactory build = new SqlSessionFactoryBuilder().build(resourceAsStream);
        //创建回话
        SqlSession openSession = build.openSession();
       openSession.delete("test.deleteUserById",27);
       openSession.commit();
    }
}

//sqlMap文件下User.xml

<?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="test" >
  <select id="findUserById" parameterType="Integer" resultType="cn.jy.mybatis.pojo.User"> 
     select * from user where id=#{id}
  </select>
  <select id="findUserByUserName" parameterType="String" resultType="cn.jy.mybatis.pojo.User"> 
     select * from user where username like  "%"#{username}"%"
  </select>
  <insert id="insertUser" parameterType="cn.jy.mybatis.pojo.User" > 
     insert into user(username,birthday,address,sex)values(#{username},#{birthday},#{address},#{sex})
  </insert>
  <update id="updateUserById" parameterType="cn.jy.mybatis.pojo.User" > 
    update user
    set username=#{username},sex=#{sex},birthday=#{birthday},address=#{address} where id=#{id}
  </update>
  <delete id="deleteUserById" parameterType="Integer" > 
    delete from user
    where id=#{id}
  </delete>
</mapper>

//日志文件log4j.properties

# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

//主映射文件  加下面连接配置文件sqlMapConfig.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

<!-- 别名 包以其子包下所有类 头字母大小都行-->
<typeAliases>
<!-- <typeAlias type="cn.lijun.mybatis.pojo.User" alias="User"/> -->
<package name="cn.jy.mybatis.pojo"/>
</typeAliases>
<!-- 和spring整合后 environments配置将废除 -->
<environments default="development">
<environment id="development">
<!-- 使用jdbc事务管理 -->
<transactionManager type="JDBC" />
<!-- 数据库连接池 -->
<dataSource type="POOLED">
<property name="driver" value="com.mysql.jdbc.Driver" />
<property name="url"
value="jdbc:mysql://localhost:3306/day58?characterEncoding=utf-8" />
<property name="username" value="root" />
<property name="password" value="root" />
</dataSource>
</environment>
</environments>
<mappers>
       <mapper resource="sqlMap/User.xml"/>  
</mappers>
</configuration>