MybatisHelloWorld
3876 ワード
// 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 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());
}
}
// 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&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>
// 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;
}
}
// Mapper
package com.base.helloworld.mapper;
import com.base.helloworld.bean.User;
public interface Mapper {
User selectById(int id);
}
// 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>