Encountering an issue when attempting to save an excel file in Angular 8, receiving an error message that states "

When working with angular 8, I encountered an issue while trying to save an excel file. The error message displayed was as follows:

ERROR TypeError: Failed to execute 'createObjectURL' on 'URL': Overload resolution failed.
    at Function.a [as saveAs] (FileSaver.min.js:1:1339)
    at SafeSubscriber._next (zdeliverysys.component.ts:225:23)

I attempted the following steps to resolve the issue:

component ts

  this._dataService.PostUpload(this.fileToUpload)
      .subscribe(blob => {
      saveAs(blob.body, this.fileToUpload +'.xlsx');
       });
service.ts
  PostUpload( file:any):Observable<any>
  {
    const formData: FormData = new FormData();
    formData.append('file', file,file.name);
    return this.http.post(this.url + 'Z2Delivery/Upload' , formData,{responseType: 'blob' });
   
  }

Can you suggest a solution to overcome this problem?

javascripttypescriptangular-materialangular8angular-components

Answer №1

Successfully resolved my issue by making changes to the service response in Angular.

Initially, the code looked like this:

 return this.http.post(this.url + 'Z2Delivery/Upload' , formData,{responseType: 'blob' });

After modification, it now looks like this:

return this.http.post(this.url + 'Z2Delivery/Upload' , formData,{observe: 'response',responseType: 'blob' });

This resulted in a successful download of the Excel file without encountering any issues.

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