Angular request with Body (FormData and JSON)

05-post-formdata.ts

POST_with_FormData(fileblob): Observable<any> {
  const URL = 'YOUR_URL_HERE';
  const data = new FormData();
  data.append('product_Id', '123');
  data.append('file', fileblob);
  return this.httpClient.post<any>(URL, data);  // returns an Observable
}

05-post-json.ts

POST_with_JSON(): Observable<any> {
  const URL = 'YOUR_URL_HERE';
  const data = {
    "testobj": {
      "testnum": 5,
      "teststr": "hello"
    },
    "testarr": [1, 2, 3]
  }
  return this.httpClient.post<any>(URL, JSON.stringify(data));  // returns an Observable
}