Angular 5 - How to display image in HTML that comes as output from a http POST?

Question

I need to display an thumbnail/image that comes from a POST request

Postman shows the output in right way

I\'m trying to use the same i

Answer 1

With Suresh Kumar Ariya's help and after a lot of back/forth, found the solution.

Solution was discussed here: https://github.com/angular/angular/issues/18586

The key here is to use responseType: 'blob' as 'json' and not responseType: 'blob'

Service.ts

getBlobThumbnail(): Observable {
  console.log("....AzureblobService.getBlobThumbnail()");
  const headers = new HttpHeaders({
    'Content-Type': 'application/json',
    'Accept': 'application/json',
});

return this.httpClient.post(this.thumbnailFetchUrl,
  {
    "url": "http://xxxx/Logo-1788C.png"
  }, {headers: headers, responseType: 'blob' as 'json' });

}

Component.ts

getThumbnail() : void {
 this.azureblobService.getBlobThumbnail()
   .subscribe(
      (val) => {
        console.log("POST - getThumbnail- successful value returned in body", val);
        this.createImageFromBlob(val);
    },
    response => {
      console.log("POST - getThumbnail - in error", response);
    },
    () => {
      console.log("POST - getThumbnail - observable is now completed.");
    });
}
/* Convert */
createImageFromBlob(image: Blob) {
 console.log("Call createImageFromBlob()", image);
 let reader = new FileReader();
 reader.addEventListener("load", () => {
  this.imageBlobUrl = reader.result;
 }, false);

 if (image) {
  reader.readAsDataURL(image);
 }
}

Component.html

Thumbnail imageBlobUrl

Environment: Angular 5.0.0