mybatis入门---更新和删除
<!-- 删除用户 --> <delete id="deleteUser" parameterType="java.lang.Integer"> delete from user where id=#{id} </delete> <!-- 更新用户 必须指定id,否则将会将表的内容全部更新 --> <update id="updateUser" parameterType="ql.mybatis.pojo.User"> update user set username=#{username},birthday=#{birthday},sex=#{sex},address=#{address} where id=#{id} </update>
测试类:
// 删除用户
@Test
public void deleteUserTest() throws IOException {
// 通过工厂得到SqlSession
SqlSession sqlSession = null;
try {
// mybatis配置文件
String resource = "SqlMapConfig.xml";
// 得到配置文件流
InputStream inputStream = Resources.getResourceAsStream(resource);
// 创建会话工厂,传入mybatis的配置文件信息
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder()
.build(inputStream);
sqlSession = sqlSessionFactory.openSession();
sqlSession.delete("test.deleteUser", 1);
sqlSession.commit();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (sqlSession != null) {
// 释放资源
sqlSession.close();
}
}
}
//更新用户
@Test
public void updateUserTest() throws IOException {
// 通过工厂得到SqlSession
SqlSession sqlSession = null;
try {
// mybatis配置文件
String resource = "SqlMapConfig.xml";
// 得到配置文件流
InputStream inputStream = Resources.getResourceAsStream(resource);
// 创建会话工厂,传入mybatis的配置文件信息
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder()
.build(inputStream);
sqlSession = sqlSessionFactory.openSession();
User user=new User();
user.setId(22);
user.setUsername("陈大明");
user.setBirthday(new Date());
user.setAddress("福建福州");
user.setSex("2");
sqlSession.update("test.updateUser",user);
sqlSession.commit();
} catch (IOException e) {
e.printStackTrace();
} finally {
if (sqlSession != null) {
// 释放资源
sqlSession.close();
}
}
}