找不到已删除的图像

Question

我在节点JS服务器上编写的函数不会删除该图像。他找不到图片。但是，当您键入图片名称时，它会从文件夹中删除它。我收到此错误：无法删除本地映像：错误：ENOENT：没有此类文件或目录，请取消链接“ C：\ Users \ mary \ Desktop \ Node.js-UploadFiles-RestAPIs \ uploads \ undefined”NodeJS：文件控制器const uploadFolder = __basedir + '/uploads/';const fs = require('fs');exports.deleteFile=(req, res)=> {    let filename = req.params.filename;    fs.unlink(uploadFolder + filename, (err) => {        if (err) {            console.log("failed to delete local image:"+err);        } else {            console.log('successfully deleted local image');                                        }});}NodeJS：文件路由器let express = require('express');let router = express.Router();let fileWorker = require('../controllers/file.controller.js');router.delete('/api/file/delete', fileWorker.deleteFile);module.exports = router; Service.ts：    delete(file : File):Observable<HttpEvent<{}>>{      // const formdata: FormData = new FormData();      // formdata.append('file' , file);      const req = new HttpRequest('DELETE', 'http://localhost:8000/api/file/delete',file, {        responseType: 'text'      });      return this.http.request(req);    }component.ts：  x:any[];  deleteImage(y){  // @ts-ignore  this.x=getFile();    this.imageServis.delete(y).subscribe(event => {      console.log("Here");    });}

Answer 1

看到错误中的未定义：

'C：\ Users \ mary \ Desktop \ Node.js-UploadFiles-RestAPIs \ uploads \ undefined'

文件名未在您的函数中定义：

exports.deleteFile=(req, res)=> {

    let filename = req.params.filename;

    fs.unlink(uploadFolder + filename, (err) => {

您使用了req.params，但似乎您在正文中发送了文件名：

 const req = new HttpRequest('DELETE', 'http://localhost:8000/api/file/delete',file, {

    responseType: 'text'

  });

如果要使用req.params，请执行以下操作：

 const req = new HttpRequest('DELETE', 'http://localhost:8000/api/file/delete'+file,null, {

    responseType: 'text'

  });

router.delete('/api/file/delete/:filename', fileWorker.deleteFile);