Mybatis之使用注解开发CRUD

Mybatis之使用注解开发CRUD

1、创建接口

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();
}

2、在配置文件中注册
<mappers>
<mapper resource="com/bird/mybatis/bean/userMapper.xml" />
<mapper class="com.bird.mybatis.bean.UserMapper"/>
</mappers>

3、使用
@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();
} 转载地址：http://blog.csdn.net/a352193394/article/details/39940259