Getting text from WebBrowser response
The webbrowser component is properly sending and receiving. The result that I get is visible within the browser window. It is XML text, and I would like to load this information into a TMemo. I have tried different techniques suggested on the Internet, including the one shown below. However, I either get nothing in the TMemo, or I get: ÿþ<
Any suggestions? (I have tried using the idhttp component, but I am not getting anything in response.) I am using Delphi 5.
procedure TForm1.Button2Click(Sender: TObject);
var
strData : string;
PostData: OleVariant;
Headers: OleVariant;
i : integer;
strXMLReturn : string;
begin
strData := '<xml></xml>'; // Put your POST data here.
PostData := VarArrayCreate([0, Length(strData) - 1], varByte);
for i := 1 to Length(strData) do
PostData[i-1] := Ord(strData[i]);
Headers := 'Content-Type: application/x-www-form-urlencoded' + #10#13 +
'Referer: https://somesite.com/' + #10#13;
// Now navigate to the URL
WebBrowser1.Navigate('http://www.SomeWebSite.com/something/api/abc_order?access_key=abc&id=16', EmptyParam, EmptyParam, PostData, Headers);
while not bReadPage do
Application.ProcessMessages;
strXMLReturn:=Document_GetHTML(WebBrowser1.Document);
Memo1.Lines.Add(strXMLReturn);
{memo1.lines.LoadFromStream(PostData);}
{Memo1.Text:=strXMLReturn;}
{Memo1.Lines.LoadFromStream(TMemoryStream(WebBrowser.Document));}
end;
function TForm1.Document_GetHTML(Document: IDispatch):string;
var
ms: TStringStream;
begin
Result := '';
if Assigned(Document) then
begin
ms := TStringStream.Create(Result);
try
OleCheck((Document as IPersistStreamInit).Save(TStreamAdapter.Create(ms),False));
Result := ms.DataString;
finally
ms.Free;
end;
end;
end;
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0 |
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Keith
2/25/2013 5:36:40 PM
embarcadero.delphi.webservices
976 articles. 
0 followers.
4 Replies
3855 Views
I got the IDhttp component to work, but I would still be interested in getting this to work. Thanks.
> {quote:title=Keith Shultz wrote:}{quote}
> The webbrowser component is properly sending and receiving. The result that I get is visible within the browser window. It is XML text, and I would like to load this information into a TMemo. I have tried different techniques suggested on the Internet, including the one shown below. However, I either get nothing in the TMemo, or I get: ÿþ<
>
> Any suggestions? (I have tried using the idhttp component, but I am not getting anything in response.) I am using Delphi 5.
>
> procedure TForm1.Button2Click(Sender: TObject);
> var
> strData : string;
> PostData: OleVariant;
> Headers: OleVariant;
> i : integer;
> strXMLReturn : string;
> begin
> strData := '<xml></xml>'; // Put your POST data here.
> PostData := VarArrayCreate([0, Length(strData) - 1], varByte);
> for i := 1 to Length(strData) do
> PostData[i-1] := Ord(strData[i]);
> Headers := 'Content-Type: application/x-www-form-urlencoded' + #10#13 +
> 'Referer: https://somesite.com/' + #10#13;
>
> // Now navigate to the URL
> WebBrowser1.Navigate('http://www.SomeWebSite.com/something/api/abc_order?access_key=abc&id=16', EmptyParam, EmptyParam, PostData, Headers);
> while not bReadPage do
> Application.ProcessMessages;
>
> strXMLReturn:=Document_GetHTML(WebBrowser1.Document);
> Memo1.Lines.Add(strXMLReturn);
> {memo1.lines.LoadFromStream(PostData);}
> {Memo1.Text:=strXMLReturn;}
> {Memo1.Lines.LoadFromStream(TMemoryStream(WebBrowser.Document));}
>
> end;
>
> function TForm1.Document_GetHTML(Document: IDispatch):string;
> var
> ms: TStringStream;
> begin
> Result := '';
> if Assigned(Document) then
> begin
> ms := TStringStream.Create(Result);
> try
> OleCheck((Document as IPersistStreamInit).Save(TStreamAdapter.Create(ms),False));
> Result := ms.DataString;
> finally
> ms.Free;
> end;
> end;
> end;
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Keith
2/25/2013 8:02:12 PM
Something like this you looking for?
function GetBrowserHtml(const webBrowser: TWebBrowser): String;
var
strStream: TStringStream;
adapter: IStream;
browserStream: IPersistStreamInit;
begin
strStream := TStringStream.Create('');
try
browserStream := webBrowser.Document as IPersistStreamInit;
adapter := TStreamAdapter.Create(strStream,soReference);
browserStream.Save(adapter,true);
result := strStream.DataString;
finally
end;
strStream.Free();
end;
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steven
2/25/2013 9:00:33 PM
Same (wrong) result: ÿþ<
> {quote:title=steven chesser wrote:}{quote}
> Something like this you looking for?
>
> function GetBrowserHtml(const webBrowser: TWebBrowser): String;
> var
> strStream: TStringStream;
> adapter: IStream;
> browserStream: IPersistStreamInit;
> begin
> strStream := TStringStream.Create('');
> try
> browserStream := webBrowser.Document as IPersistStreamInit;
> adapter := TStreamAdapter.Create(strStream,soReference);
> browserStream.Save(adapter,true);
> result := strStream.DataString;
> finally
> end;
> strStream.Free();
> end;
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Keith
2/25/2013 10:48:58 PM
> {quote:title=Keith Shultz wrote:}{quote}
> Same (wrong) result: ÿþ<
>
> > {quote:title=steven chesser wrote:}{quote}
> > Something like this you looking for?
> >
> > function GetBrowserHtml(const webBrowser: TWebBrowser): String;
> > var
> > strStream: TStringStream;
> > adapter: IStream;
> > browserStream: IPersistStreamInit;
> > begin
> > strStream := TStringStream.Create('');
> > try
> > browserStream := webBrowser.Document as IPersistStreamInit;
> > adapter := TStreamAdapter.Create(strStream,soReference);
> > browserStream.Save(adapter,true);
> > result := strStream.DataString;
> > finally
> > end;
> > strStream.Free();
> > end;
ah ok.. i pointed my twebbrowser to an XML file on my system and tried the above code and got the same result as you.
function getxmldata(const webbrowser:twebbrowser):string;
var
HTML: IHtmlDocument2;
begin
HTML := webbrowser.Document as IHTMLDocument2;
Result := HTML.body.outerText;
end;
I ran this, and it returned the XML data
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steven
2/27/2013 1:18:59 AM
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