mybatis 基础代码（非spring）

package com.yihaomen.test; import java.io.Reader; 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 com.yihaomen.mybatis.inter.IUserOperation; import com.yihaomen.mybatis.model.Article; import com.yihaomen.mybatis.model.User; public class Test { private static SqlSessionFactory sqlSessionFactory; private static Reader reader; static { try { reader = Resources .getResourceAsReader("com/yihaomen/config/mybatis-config.xml"); sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader); } catch (Exception e) { e.printStackTrace(); } } public static SqlSessionFactory getSession() { return sqlSessionFactory; } public static void getUserList(String userName) { SqlSession session = sqlSessionFactory.openSession(); try { IUserOperation userOperation = session.getMapper(IUserOperation.class); List<User> users = userOperation.selectUsers(userName); for (User user : users) { System.out.println(user.getId() + ":" + user.getUserName() + ":" + user.getUserAddress()); } } finally { session.close(); } } public void addUser(){ User user=new User(); user.setUserAddress("人民广场"); user.setUserName("飞鸟"); user.setUserAge(80); SqlSession session = sqlSessionFactory.openSession(); try { IUserOperation userOperation=session.getMapper(IUserOperation.class); userOperation.addUser(user); session.commit(); System.out.println("当前增加的用户 id为:"+user.getId()); } finally { session.close(); } } public void updateUser(){ //先得到用户,然后修改，提交。 SqlSession session = sqlSessionFactory.openSession(); try { IUserOperation userOperation=session.getMapper(IUserOperation.class); User user = userOperation.selectUserByID(4); user.setUserAddress("原来是魔都的浦东创新园区"); userOperation.updateUser(user); session.commit(); } finally { session.close(); } } public void deleteUser(int id){ SqlSession session = sqlSessionFactory.openSession(); try { IUserOperation userOperation=session.getMapper(IUserOperation.class); userOperation.deleteUser(id); session.commit(); } finally { session.close(); } } public static void getUserArticles(int userid){ SqlSession session = sqlSessionFactory.openSession(); try { IUserOperation userOperation=session.getMapper(IUserOperation.class); List<Article> articles = userOperation.getUserArticles(userid); for(Article article:articles){ System.out.println(article.getTitle()+":"+article.getContent()+ ":作者是:"+article.getUser().getUserName()+":地址:"+ article.getUser().getUserAddress()); } } finally { session.close(); } } public static void main(String[] args) { SqlSession session = sqlSessionFactory.openSession(); try { IUserOperation userOperation = session.getMapper(IUserOperation.class); User user = userOperation.selectUserByID(1); System.out.println(user.getUserAddress()); System.out.println(user.getUserName()); getUserArticles(1); } finally { session.close(); } } }