我在delphi中有一个TIdHTTPServer
和TIdHTTP
的应用程序,并且我有以下代码:
// This is for activating the HTTPServer - works as expected
HTTPServer1.Bindings.Add.IP := '127.0.0.1';
HTTPServer1.Bindings.Add.Port := 50001;
HTTPServer1.Active := True;
这是我的HTTPServer的
OnCommandGet
过程:procedure TDataForm.HttpServer1CommandGet(AContext: TIdContext;
ARequestInfo: TIdHTTPRequestInfo; AResponseInfo: TIdHTTPResponseInfo);
begin
AResponseInfo.ContentText := 'Hello, user';
end;
而且我只是不知道为什么这个程序不起作用:
procedure TDataForm.btnHTTPSendGetClick(Sender: TObject);
var
HTTPClient : TIdHTTP;
responseStream : TMemoryStream;
begin
HTTPClient := TIdHTTP.Create;
responseStream := TMemoryStream.Create;
try
try
HTTPClient.Get('http://127.0.0.1:50001', responseStream);
except on e : Exception do begin
showmessage('Could not send get request to localhost, port 50001');
end;
end;
finally
FreeAndNil(HTTPClient);
FreeAndNil(responseStream);
end;
end;
如果我通过浏览器连接,则可以在浏览器中看到“用户您好”,但是如果我尝试
btnHTTPSendGetClick
,则程序将毫无例外地崩溃。谁能帮我修复我的代码? 最佳答案
HTTPServer1.Bindings.Add.IP:='127.0.0.1';
HTTPServer1.Bindings.Add.Port:= 50001;
这是一个常见的新手错误。您正在创建两个绑定,一个绑定到127.0.0.1:DefaultPort,一个绑定到0.0.0.0:50001。您需要一个绑定,而是绑定到127.0.0.1:50001。
with HTTPServer1.Bindings.Add do begin
IP := '127.0.0.1';
Port := 50001;
end;
要么:
HTTPServer1.Bindings.Add.SetBinding('127.0.0.1', 50001, Id_IPv4);
要么:
HTTPServer1.DefaultPort := 50001;
HTTPServer1.Bindings.Add.IP := '127.0.0.1';
话虽如此,您的服务器响应仍不完整。尝试以下方法:
procedure TDataForm.HttpServer1CommandGet(AContext: TIdContext;
ARequestInfo: TIdHTTPRequestInfo; AResponseInfo: TIdHTTPResponseInfo);
begin
AResponseInfo.ResponseNo := 200;
AResponseInfo.ContentType := 'text/plain';
AResponseInfo.ContentText := 'Hello, user';
end;