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>