mybatis注解形式操作数据

注解代码：

import java.util.List;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.type.Alias;

public interface UserMapper {

     
        @Select("SELECT * FROM user ")
        List<User> selectAllUser();
     
}

mybatis-config.xml中配置mapper

    <mappers>
         <mapper resource="com/ibatis/pojo/user.xml" /> <!--xml形式映射 -->
         <mapper class="com.ibatis.pojo.UserMapper" />   <!--注解形式映射 或者 代码中手动加载:ssf.getConfiguration().
                                                           addMapper(UsergMapper.class);--> 
    </mappers>

java代码：

    BlogMapper mapper = session.getMapper(BlogMapper.class);