HttpWebRequestMgt.AddBodyAsAsciiText is working HttpWebRequestMgt.AddBodyAsText not!

davhol86
davhol86 Member Posts: 6
in NAV/Navision Classic Client
Hi All,

I'm using HttpWebRequestMgt with a json body to call a rest api.
It works when I add the body with function "AddBodyAsAsciiText", but i want to send some text in german and that is not working with special chars like ä ü ö.
So i tried to use AddBodyAsText, so the text is utf-8 encoded. But then it's not working anymore.

I'm getting a remote server error (400): invalid request.

1ghdfm9dtdnc.png

With Postman it works fine, also the special chars are send correctly. So it's not a problem of the server, i think.

Has anyone an idea?

here is the code snipped i use:
  //  Create Request
  HttpWebRequestMgt.Initialize(Url);
  HttpWebRequestMgt.DisableUI();
  HttpWebRequestMgt.SetMethod('PATCH');
  HttpWebRequestMgt.SetReturnType('application/json');
  HttpWebRequestMgt.SetContentType('application/json');
  // Here i want to use AddBodyAsText
  HttpWebRequestMgt.AddBodyAsAsciiText(JsonBody);
  
  AddAuthorizationHeader(HttpWebRequestMgt);

  HttpWebRequestMgt.SendRequestAndReadTextResponse(ResponseBody, ErrorMsg, ErrorDetails, 
  HttpStatusCode, ResponseHeaders);

Answers

  • vaprog
    vaprog Member Posts: 1,163
    edited 2022-07-06
    I would try to add 
    ; charset=UTF-8
    to the content type. If this does not work with SetContentType, try 
    HttpWebRequestMgt.AddHeader('Content-Type', 'application/json; charset=UTF-8')
    instead.

    If this does not help, try to capture the request as it is transferred over the wire, and check your body is valid UTF-8.
  • davhol86
    davhol86 Member Posts: 6
    Hi @vaprog,

    thank you for you're response. I just tried the first and second approach before, its not working.

    Now I'm trying the third approach. I've found a website which shows me all the header and body data i send and i recognized differences in the format of the body, but I can't get the rigth conclusions from that.

    When i send with Postman than the body looks like that:
    mspfii18n3or.png

    and when i send with BC it looks like that:
    s52ru474sqhn.png
  • vaprog
    vaprog Member Posts: 1,163
    Try to look at the raw data. As JSON is text, this is not too cryptic.

    From what I see I quess your body is wrapped in a superfluous set of quotes and thus treated as a JSON string, rather than parsed as an object.
  • davhol86
    davhol86 Member Posts: 6
    I was able to catch the raw data of my request and the body is the same in both requests.
    I was also able to get more info about the bad request error which says "{"errors":[{"code":"0","status":"400","title":"Bad Request","detail":"The JSON payload is malformed."}]}".

    What i recognized is that the Content-Length is different. The request with the error has allways 3 bytes more.

    Here's the payload:
    {
  "name": "TEST Kategorie Äüö",
  "displayNestedProducts": true,
  "productAssignmentType": "product",
  "type": "page",
  "active": true,
  "visible": true,
  "parentId": "9aaff3ff49534e84b59b83fc04afd1c3"
}

    Has someone an idea what i can try next?
  • davhol86
    davhol86 Member Posts: 6
    Hi,

    I solved it now by using 
    HttpWebRequestMgt.AddBodyBlob(TempBlob);
    insteat.

    Below are the 2 Functions. AddBodyAsTextWithEncoding uses a StreamWriter to write the body while AddBodyBlob copies the stream from blob.
    I assume it's cause a StreamWriter writes body as text and the COPYSTREAM function writes the body as a bytestream.

    Now the Content-Length is also the same as with Postman.
    AddBodyBlob(VAR TempBlob : Record TempBlob)
IF NOT TempBlob.Blob.HASVALUE THEN
  EXIT;

RequestStr := HttpWebRequest.GetRequestStream;
TempBlob.Blob.CREATEINSTREAM(BlobStr);
COPYSTREAM(RequestStr,BlobStr);
RequestStr.Flush;
RequestStr.Close;
RequestStr.Dispose;

LOCAL AddBodyAsTextWithEncoding(BodyText : Text;Encoding : DotNet "System.Text.Encoding")
RequestStr := HttpWebRequest.GetRequestStream;
StreamWriter := StreamWriter.StreamWriter(RequestStr,Encoding);
StreamWriter.Write(BodyText);
StreamWriter.Flush;
StreamWriter.Close;
StreamWriter.Dispose;

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