procedure TForm1.SpeedButton1Click(Sender: TObject);
var
  Str:String;
  M5Str,BaseStr:AnsiString;
begin
  str:=StringReplace(Trim(Edit1.Text),' ','',[rfReplaceAll]);
  Memo1.Lines.Add('原文'+str);
  M5Str:=THashMD5.GetHashString(Str);
  Memo1.Lines.Add('MD5:'+M5Str);
  Memo1.Lines.Add('QDAC,URL:'+qstring.UrlEncode(str,False,true));
  Memo1.Lines.Add('TNET,URL:'+TURLEncoding.URL.Encode(str));
  BaseStr:=TNetEncoding.Base64.Encode(M5Str);
  Memo1.Lines.Add('Base64(MD5):'+BaseStr);
  Memo1.Lines.Add('QDAC,URL(Base64(MD5)):'+qstring.UrlEncode(BaseStr,True,true));

  Memo1.Lines.Add('TNET,URL(Base64(MD5)):'+TNetEncoding.URL.Encode(BaseStr));
end;

procedure TForm1.SpeedButton2Click(Sender: TObject);
var
  md5: TIdHashMessageDigest5;
  base64: TIdEncoderMIME;
  sMD5:TIdBytes;
  Str:String;
  fStr:AnsiString;
  aMD5:TBytes;
  MStream,OStream:TMemoryStream;
begin
  Memo1.Lines.Clear;
  MStream:=TMemoryStream.Create;
  OStream:=TMemoryStream.Create;
  str:='<order></order>123456';
  aMD5:=THashMD5.GetHashBytes(Str);
  var s:=TNetEncoding.Base64.EncodeBytesToString(aMD5);
  Memo1.Lines.Add('TNetEncoding.Base64.EncodeBytesToString:'+s);
  Memo1.Lines.Add('UrlEncode:'+qstring.UrlEncode(s,True,true));
  md5 := TIdHashMessageDigest5.Create;
  base64 := TIdEncoderMIME.Create(nil);
  try
    base64.FillChar := '=';
    sMD5:=md5.HashString(str);
    Memo1.Lines.Add(base64.EncodeBytes(sMD5));
  finally
    base64.Free;
    md5.Free;
  end;