Hi Sander,
I am also facing a similar situation. I needed to download and save an
excel file in Angular 5 using HttpClient. I viewed the Angular
documentation and came up with the following code for my service call:-
DownloadExcelFile(): Observable<any> {
const httpOptions = {
headers: new HttpHeaders({ 'responseType': 'ResponseContentType.Blob',
'Content-Type': 'application/vnd.ms-excel'})};
return this.http.get(environment.baseurl + '/api/DownloadExcelFile',
httpOptions);
}
and getting the data through the following Code:-
this.dataService.DownloadQDMFile().subscribe(
(data) => {
if (data) {
const myBlob: Blob = new Blob([(<any>data)._body]);
saveAs(myBlob, 'SampleExcel.xlsx');
}
},
(err) => {
}
);
But I was always getting an error. I was able to download the file using
Http request with the following Http service code:-
DownloadExcelFile(): Observable<any> {
return this.http.get(environment.baseurl + '/api/DownloadExcelFile', {
responseType: ResponseContentType.Blob});
});
}
Could you please explain why this isn't working and how to download using
HttpClient.
Thanks in Advance.
On Monday, September 11, 2017 at 6:13:39 PM UTC+5:30, nicolas duminil wrote:
>
> Hello,
>
> I need to call a JAX-RS service which returns an excel file and i need to
> download locally this file. I have googled to see how to do it in Angular
> and found lots of samples for Angular 2 which don't work in Angular 4 and
> HttpClient.
>
> For example I found this:
>
> public downloadFile2(bundleIds: Array<String>, langIds: Array<String>):
> Observable<Blob> {
> let options = new RequestOptions({ responseType: ResponseContentType.Blob
> });
> return this.http.get(this.url, options).map(res => res.blob());
> }
>
> It doesn't compile and flags the following error message at the last line
> (options):
>
> [ts]
> Argument of type 'RequestOptions' is not assignable to parameter of type
> '{ headers?: HttpHeaders; observe?: "body"; params?: HttpParams;
> reportProgress?: boolean; respons...'.
> Types of property 'headers' are incompatible.
> Type 'Headers' is not assignable to type 'HttpHeaders'.
> Property 'headers' is missing in type 'Headers'.
>
> What seems to happen is that HttpClient requires HttpHeaders parameters
> while this example is using Headers. Could someone please provide me with a
> working example of downloading an Excel file or, at least, how to solve the
> error above ?
>
> Many thanks in advance,
>
> Nicolas
>
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