初学DELPHI，谁能帮我讲讲获取网页源码的原理？

Question

如题，最好能附上源码，谢谢大家了！

Answer 1

uses
  IdHTTP,IdSSLOpenSSL;procedure TForm1.Button1Click(Sender: TObject);
var
  phttp: TIdHTTP;
  pOpenSSL: TIdSSLIOHandlerSocketOpenSSL;
begin
  pHttp := TIdHTTP.Create(Nil);
  try
    pOpenSSL := TIdSSLIOHandlerSocketOpenSSL.Create(Nil);
    try
      phttp.IOHandler := pOpenSSL;
      ShowMessage(phttp.Get('https://forums.codegear.com/thread.jspa;jsessionid=A821C611B7FFD10F9FB78A159C949973?messageID=69070&#69070'));
    finally
      pOpenSSL.Free;
    end;
  finally
    phttp.Free;
  end;
end;