javascript - Unable to POST file to upload - Stack Overflow

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I'm trying to upload a file. I've got it to the server and I can see it. The code I'm using to post is

postTheFileToStrapi2(file: File) {
    const formData: FormData = new FormData();
    console.log(file[0].name);
    formData.append('file', file[0]);
    this.http.post('http://localhost:1337/upload', formData)
      .subscribe((response) => console.log(response));
  }

The problem is, I get an error of:

{
"statusCode":400,
"error":"Bad Request",
"message":[
   {"messages":[
      {"id":"Upload.status.empty","message":"Files are empty"}
   ]}]}

But, looking at the headers in Chrome, I am sending this:

Any pointers would be greatly received.

I'm trying to upload a file. I've got it to the server and I can see it. The code I'm using to post is

postTheFileToStrapi2(file: File) {
    const formData: FormData = new FormData();
    console.log(file[0].name);
    formData.append('file', file[0]);
    this.http.post('http://localhost:1337/upload', formData)
      .subscribe((response) => console.log(response));
  }

The problem is, I get an error of:

{
"statusCode":400,
"error":"Bad Request",
"message":[
   {"messages":[
      {"id":"Upload.status.empty","message":"Files are empty"}
   ]}]}

But, looking at the headers in Chrome, I am sending this:

Any pointers would be greatly received.

• javascript
• angular
• typescript
• strapi

Share Improve this question Follow edited Nov 20, 2019 at 3:56 JackChouMine 1,2021313 silver badges2727 bronze badges asked Nov 19, 2019 at 23:46 Mat JohnsonMat Johnson 4711 silver badge66 bronze badges

Add a ment  | 

2 Answers 2

Sorted by: Reset to default 6

Try to replace

formData.append('file', file[0]);

with

formData.append('files', file[0]);

--> plural instead of singular. As far as I understand the strapi api (or upload plugin?) expects the data to be in a field named "files".

I struggled for hours until I read Pavlo Razumovskyi's ment here:

It's new api now, check new docs: strapi.io/documentation/3.0.0-beta.x/plugins/… formData.append('files.MODEL_FILE_FIELD_NAME', blob, filename)

That solved it for me at least!

you can follow below example to upload image in Angular.

in your .HMTL file in your HTML file do like this

  <input class="hidden" type="file" (change)="readURL($event);" name="Uploadfile" 
   id="file" style="width: 100%;cursor: pointer;" #fileInput>

Declare fileInput variable like below in ponent.ts file

 @ViewChild('fileInput', { static: false }) fileInput: ElementRef;

you can try like this in ponent.ts

     uploadPhoto() {

       let userid = "43345;
      var nativeElement: HTMLInputElement = this.fileInput.nativeElement;
      var file = nativeElement.files[0];
      nativeElement.value = '';
      this.sampleService.ImageUpload(userid, file)
        .subscribe(photo => {
           
         ,
          err => {
           
            
          });
  }

in service file do like below

    ImageUpload(id, file) {
    var formData = new FormData();
    formData.append('file', file);
    return this.Http.post(this.url+ 'ImageUpload' + '/' + id, formData);
  }

in WEB API do like below code to receive file from Angular

[HttpPost("ImageUpload/{Id}")]
public async Task<IActionResult> plantFileUpload(string Id, [FromForm(Name = "file")] IFormFile file)
{

}

This should work

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