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超详细超实用！！！零基础java开发之云风笔记接口开发之删除笔记（十一）

news 2024/9/23 2:26:27

云风网
云风笔记
云风知识库

一、service/NoteApi新增delNode接口定义

public interface NoteApi {...int deleteNote(NoteManage noteManage);
}

二、service/impl/NoteServiceImpl接口实现逻辑

public class NoteServiceImpl implements NoteApi {@AutowiredNoteMapper noteMapper;...public int delNote(int id){int count = 0;try {count = noteMapper.delNote(id);}catch (Exception err){System.out.println(err);}return count;}}

三、mapper/NoteMapper新增接口

...
import org.apache.ibatis.annotations.Param;public interface NoteMapper {...int delNote(int noteId);
}

四、新增sql语句

<delete id="delNote">DELETE FROM note WHERE id = #{id}
</delete>

五、NoteManage添加获取id/设置id

之前更新接口已经声明，这里不用变更代码

六、控制类NoteController新增更新逻辑

 @RequestMapping(value = "/delNote",method = RequestMethod.POST)
public Response delNote(@RequestBody NoteManage noteManage){int id = noteManage.getNoteId();if(id!=0){int count = service.delNote(id);if(count>0){Response response = new Response(true,"删除成功",200);return response;}else {Response response = new Response(false,"删除失败",400);return response;}}else {Response response = new Response(false,"删除失败，请传入id",400);return response;}
}