[英]Unable to upload image in MEAN-stack app
所以我有一個卑鄙的堆棧應用程序。 我希望在用戶的個人資料頁面上,他們能夠上傳圖片。
現在,我從在模板中選擇它開始,然后通過組件到達服務文件,在其中使用formData發出POST請求。 在后端,我使用Multer中間件來處理上傳,但是這里有些問題。 以下是我在后端的代碼。
var multer = require('multer')
var upload = multer({ dest: '../public/uploads/' });
router.post('/uploadProfilePicture/:userId', upload.single('avatar'), function(req, res){
console.log('entered');
console.log(req.file);
console.log(req.body);
res.status(200).json({
msg: 'guuud'
})
});
我主要只是想檢查我是否到達后端。 控制台給我以下錯誤:
POST / user / uploadProfilePicture / 5aaf1b7c18f2aa3d88e3b59e 500 16.382 ms-1711
沒有輸入的控制台日志,也沒有其他的。 服務和后端之間出了點問題,但是我絕對不知道。
這是用於此上傳的服務和其他文件。
Service.component.ts
postFile(fileToUpload: File, userId) {
const formData: FormData = new FormData();
console.log(fileToUpload);
formData.append('fileKey', fileToUpload, fileToUpload.name);
console.log(formData);
return this.http.post("http://localhost:3200/user/uploadProfilePicture/" + userId, formData)
.map(() => { return true; })
.catch((e) => this.handleError(e));
}
這是頁面+服務文件中console.logs的結果
profile.component.ts
handleFileInput(files: FileList){
this.fileToUpload = files.item(0);
this.uploadFileToActivity();
}
uploadFileToActivity() {
this.userService.postFile(this.fileToUpload, localStorage.getItem('userId')).subscribe(data => {
console.log(data)
}, error => {
console.log(error);
});
}
profile.component.html
<div class="col-md-8 col-md-offset-2 profilePicSection">
<div class="form-group">
<label for="file">Choose File</label>
<input type="file"
id="file"
(change)="handleFileInput($event.target.files)">
</div>
</div>
編輯:我的服務器控制台給我的錯誤:
Error: Unexpected field
at makeError (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\multer\lib\make-error.js:12:13)
at wrappedFileFilter (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\multer\index.js:40:19)
at Busboy.<anonymous> (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\multer\lib\make-middleware.js:114:7)
at Busboy.emit (events.js:159:13)
at Busboy.emit (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\busboy\lib\main.js:38:33)
at PartStream.<anonymous> (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\busboy\lib\types\multipart.js:213:13)
at PartStream.emit (events.js:159:13)
at HeaderParser.<anonymous> (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\dicer\lib\Dicer.js:51:16)
at HeaderParser.emit (events.js:159:13)
at HeaderParser._finish (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\dicer\lib\HeaderParser.js:68:8)
at SBMH.<anonymous> (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\dicer\lib\HeaderParser.js:40:12)
at SBMH.emit (events.js:159:13)
at SBMH._sbmh_feed (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\streamsearch\lib\sbmh.js:159:14)
at SBMH.push (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\streamsearch\lib\sbmh.js:56:14)
at HeaderParser.push (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\dicer\lib\HeaderParser.js:46:19)
at Dicer._oninfo (C:\Users\TijlD\Desktop\test\moviemeter\node_modules\dicer\lib\Dicer.js:197:25)
我將此代碼用於視頻類型文件,並且效果很好,希望對您有所幫助
var storage = multer.diskStorage({
destination: function (req, file, callback) {
var fileDest = path.join('../uploads/');
if (!fs.existsSync(fileDest)) {
mkdirp(fileDest, function (err) {
if (err) {
logger.error(err);
callback(err, false);
} else {
callback(null, '../uploads');
}
});
} else {
callback(null, '../uploads/');
}
},
filename: function (req, file, callback) {
callback(null, file.fieldname + '.' + file.originalname.split('.')[1]);
}
});
var upload = multer({
storage: storage,
fileFilter: function (req, file, callback) {
// To reject this file pass `false`, like so:
var sw = 0;
for (var i = 0; i < config.videoMimeTypes.length; i++) {
if (file.mimetype === config.videoMimeTypes[i]) {
sw = 1;
break;
}
}
if (sw === 0) {
logger.error('Not allowed file type sent');
// return callback(new Error('Only video files are allowed!'));
return callback('Only video files are allowed!', false);
}
// To accept the file pass `true`, like so:
callback(null, true);
},
limits: {
fileSize: config.maxUploadSize
}
});
app.post('/upload', upload.any(), router.uploader);
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.