MybatisHelloWorld

//测试入口TestMyBatis   
package com.base.helloworld.test;

import java.io.IOException;

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.base.helloworld.bean.User;
import com.base.helloworld.mapper.Mapper;

/**
 * @Description
 * @author FuJianyong
 * 2015-1-20下午04:25:27
 */
public class TestMyBatis {
      public static SqlSessionFactory getSessionFactory() {
    	  String config = "com/base/helloworld/config.xml";
    	  SqlSessionFactory sessionFactory = null;
    	  try {
			sessionFactory = new SqlSessionFactoryBuilder().build(Resources.getResourceAsReader(config));
		  } catch (IOException e) {
			e.printStackTrace();
		  }
		  return sessionFactory;
      } 
      public static void main(String[] args) {
    	  	SqlSession sqlSession = getSessionFactory().openSession();
    	  	Mapper mapper = sqlSession.getMapper(Mapper.class);
    	  	User user = mapper.selectById(2);
    	  	System.out.println(user.getName()+"  "+user.getPassword());
      }
}
 
//配置文件config.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>
  <typeAliases>
       <typeAlias type="com.base.helloworld.bean.User" alias="User"/>
  </typeAliases>
  <environments default="development">
  		<environment id="development">
  			<transactionManager type="jdbc" />
  			<dataSource type="POOLED" >
  			   	<property name="driver" value="com.mysql.jdbc.Driver"/>
  			   	<property name="url" value="jdbc:mysql://192.168.1.10:3306/xxx?useUnicode=true&amp;characterEncoding=utf-8"/>
  			   	<property name="username" value="xxx" />
  			   	<property name="password" value="xxx" />
  			</dataSource>
  		</environment>
  </environments>
  <mappers>
     <mapper resource="com/base/helloworld/mapper/mapper.xml"/>
  </mappers>
</configuration>
//模型User  
package com.base.helloworld.bean;

public class User {
	
   private String name;
   
   private String password;

	public String getName() {
		return name;
	}
	
	public void setName(String name) {
		this.name = name;
	}
	
	public String getPassword() {
		return password;
	}
	
	public void setPassword(String password) {
		this.password = password;
	}
   
}

// 接口Mapper  
package com.base.helloworld.mapper;

import com.base.helloworld.bean.User;

public interface Mapper {
	
	User selectById(int id);	
	
}

//操作数据库mapper.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="com.base.helloworld.mapper.Mapper">
   <select id="selectById" parameterType="int" resultType="User">
   		SELECT * FROM t_user where ID = #{id}
   </select>
</mapper>