Home > Database > Mysql Tutorial > body text

Mybatis之使用注解开发CRUD

WBOY
Release: 2016-06-07 16:04:40
Original
1020 people have browsed it

上一篇演示了如何使用XML来操作Mybatis实现CRUD,但是大量的XML配置文件的编写是非常烦人的。因此 Mybatis也提供了基于注解的配置方式,下面我们来演示一下使用接口加注解来实现CRUD的的例子。 首先是创建一个接口。 package com.bird.mybatis.bean;import j

上一篇演示了如何使用XML来操作Mybatis实现CRUD,但是大量的XML配置文件的编写是非常烦人的。因此

Mybatis也提供了基于注解的配置方式,下面我们来演示一下使用接口加注解来实现CRUD的的例子。

首先是创建一个接口。

package com.bird.mybatis.bean;

import java.util.List;

import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;

public interface UserMapper {
	@Insert("insert into users(name, age) values(#{name}, #{age})")
	public int add(Users user);
	
	@Delete("delete from users where id = #{id}")
	public int deleteById(int id);
	
	@Update("update users set name = #{name}, age = #{age} where id = #{id}")
	public int update(Users user);
	
	@Select("select * from users where id = #{id}")
	public Users getUserById(int id);
	
	@Select("select * from users")
	public List<Users> getAllUsers();
}
Copy after login
然后一定不要忘了在conf.xml配置文件中,注册这个类
<mappers>
		<mapper resource="com/bird/mybatis/bean/userMapper.xml" />
		<mapper class="com.bird.mybatis.bean.UserMapper"/>
	</mappers>
Copy after login
下面就是使用这个类了
@Test
	public void testAdd2() {
		SqlSession openSession = factory.openSession();
		UserMapper mapper = openSession.getMapper(UserMapper.class);
		mapper.add(new Users(-1,"娃娃",99));
		openSession.commit();
		openSession.close();
	}
Copy after login
Related labels:
source:php.cn
Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Popular Tutorials
More>
Latest Downloads
More>
Web Effects
Website Source Code
Website Materials
Front End Template