Delphi IdHTTP.Post-没有进度,我无法在进度栏中显示
我试图显示来自TIdHTTP组件的POST调用的进度Delphi IdHTTP.Post-没有进度,我无法在进度栏中显示,delphi,http,progress-bar,http-post,indy,Delphi,Http,Progress Bar,Http Post,Indy,我试图显示来自TIdHTTP组件的POST调用的进度 procedure TForm1.IdHTTP1Work(ASender: TObject; AWorkMode: TWorkMode; AWorkCount: Int64); begin ProgressBar1.Position := AWorkCount; end; procedure TForm1.IdHTTP1WorkBegin(ASender: TObject; AWorkMode: TWorkMode; AWorkCo
procedure TForm1.IdHTTP1Work(ASender: TObject; AWorkMode: TWorkMode;
AWorkCount: Int64);
begin
ProgressBar1.Position := AWorkCount;
end;
procedure TForm1.IdHTTP1WorkBegin(ASender: TObject; AWorkMode: TWorkMode;
AWorkCountMax: Int64);
begin
Progressbar1.Max := AWorkCountMax;
end;
然而,当我调试这个时,我在.Max=AWorkCountMax代码>行,第一次值为65,第二次值为0
我知道这可能不必要,因为它不需要很长时间,但取决于返回的数据量,它可能需要很长时间。begin
procedure TForm1.IdHTTPWorkBegin(Sender: TObject; AWorkMode: TWorkMode;
const AWorkCountMax: Integer);
begin
if AWorkMode = wmRead then
begin
ProgressBar.Max := AWorkCountMax;
ProgressBar.Position := 0;
end;
end;
特兰弗特
procedure TForm1.IdHTTPWork(Sender: TObject; AWorkMode: TWorkMode;
const AWorkCount: Integer);
begin
if AWorkMode=wmRead then
ProgressBar.Position := AWorkCount;
end;
结束
嗯,我认为这是因为它无法确定实际大小,因为输出是动态创建的。这是正确的<当Indy事先不知道需要多少数据时,code>AWorkCountMax
为零。在HTTP中,这通常意味着服务器以块的形式发送应答数据(应答包含传输编码:chunked
头)。当AWorkCountMax
为零时,您应该使用不同的UI来显示AWorkCount
的实际值,这是到目前为止传输的总字节数。@Remy-通过向我的php脚本添加一个头,它修复了它。:)
procedure TForm1.IdHTTPWorkEnd(Sender: TObject; AWorkMode: TWorkMode);
begin
ProgressBar.Position := 0;
end;