架包
package hp.com;
import java.io.IOException;
import java.io.InputStream;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
public class MyBatisText {
public static void main(String[] args) throws IOException {
// 该配置文件使用文件流的形式读入，通过mybatis的工具类Resources加载资源文件：
String resource = "hp/com/mybatis-config.xml";
InputStream inputStream = Resources.getResourceAsStream(resource);
SqlSessionFactory sqlSessionFactory =new SqlSessionFactoryBuilder().build(inputStream);
//从 SqlSessionFactory 中获取 SqlSession
SqlSession session=sqlSessionFactory.openSession();
//连接 BlogMapper.xml 配置文件的路径 加里面的id
String statement = "hp.com.BlogMapper.selectBlog";
//查询
user user= session.selectOne(statement,7);
//添加
// user user = new user();
// user.setName("虎子");
// user.setPassword("20");
//要实现添加就需要调用 session.insert(statement,user)
// session.insert(statement,user);
//最后需要关闭
// session.commit();
//删除
// user user= session.selectOne(statement,4);
//修改
// user user=new user();
// user.setId(6);
// user.setName("东子");
// user.setPassword("222");
//要实现添加就需要调用 session.insert(statement,user)
// session.insert(statement, user);
//最后需要关闭
// session.commit();
System.out.println(user);
session.close();
}
}
BlogMapper.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="hp.com.BlogMapper">
<select id="selectBlog" resultType="hp.com.user">
<!-- delete from user where id=#{id} -->
select * from user where id=#{id}
<!-- insert into user(name,password) values(#{name},#{password}) -->
<!-- update user set name=#{name},password=#{password} where id=#{id} -->
</select>
</mapper>
mybatis-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>
<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:///test"/>
<property name="username" value="root"/>
<property name="password" value="root"/>
</dataSource>
</environment>
</environments>
<mappers>
<mapper resource="hp/com/BlogMapper.xml"/>
</mappers>
</configuration>