使用delphi 开发多层应用（二十) ios通过soap 显示kbmmw服务器上的图片

    上一次通过soap,使IOS 访问了kbmmw服务器，今天顺便看能不能与android 共用服务器上的那个

下载图片的功能。首先说一下服务端的的程序，基本上就是前面的代码，没有变化，只是要indy 里面的

base64 编码功能，不再啰嗦，直接代码：

function Txalionsrv.Performgetimgm(ClientIdent: TkbmMWClientIdentity;

  const Args: array of Variant): Variant;

var

    fs:TMemoryStream;

    filename:string;

    base64:pansichar;

    i:integer;

    flen,bsize:int64;

    b64:TIdencoderMIME;

begin

 filename:='D:\picture\'+args[0];

  if not FileExists(filename) then

     begin

       kbmMWRaiseServerException('文件不存在!');

       exit;

     end;

  fs:=TMemoryStream.Create;

  b64:=TIdEncoderMIME.Create();

  try

   fs.LoadFromFile(filename);

   result:=b64.EncodeStream(fs)

 finally

    fs.Free;

    b64.Free;

  end;

end;

客户端为了显示图片，改变了一下界面

增加了一个Timage 控件，和一个显示按钮

把soap 调用整理成一个公共过程：

function remoterequest(ip,servicename,funcname:string;v:Variant;var StatusText:string;var vout:Variant):integer;

   var

   server:IProcessRequestSOAPPort;

   req:ProcessRequest;

   res:TkbmMWSOAPResponse;

begin

    result:=-1;

      server:=GetIProcessRequestSOAPPort(false,

            'http://'+ip+'/server1',nil);

            req:=ProcessRequest.Create;

         try

          // Setup request.

                  req.ServiceName:=servicename;//'XALION_SRV';

                  req.ServiceVersion:='';

                  req.StateID:=-1;

                  req.Func:=funcname;//'sumall';

                 // Setup identity.

                 //req.Ident:=TkbmMWSOAPClientIdentity.Create;

                 //req.Ident.Username:=’HANS’;

                 //req.Ident.Password:=’somepassword’;

                  req.Args:=v;

                  // Call app server.

                  res:=server.ProcessRequest(req);

              try

            // Check response.

                  StatusText:=res.StatusText;

                  if res.StatusCode=0 then // OK

                  begin

                    result:=0;

                    vout:=res.Result;

                  end;

                finally

               res.Free;

            end;

            finally

            req.Free;

          end;

end;

 然后在按钮点击里面使用下面代码：

procedure TForm1.Button2Click(Sender: TObject);

var

   args:array[1..4] of Variant;

   ms:TMemoryStream;

   

   v,vout:variant;

   s:String;

   len,mlen:integer;

   b64:TIdDecoderMIME;

   img:Tbitmap;

begin

   v:=VarArrayCreate([0,1],varVariant);

   v[0]:='1.JPG';

  if  remoterequest(servername.Text,'XALION_SRV', 'getimgm',v,s,vout)<>0 then

     begin

       edit1.Text:='bad' ;

       exit;

     end;

   Label1.Text:=s;

   s:=vout;

   b64:= TIdDecoderMIME.Create;

  try

    ms:=TMemoryStream.Create;

   b64.DecodeStream(s,ms);

   img:=Tbitmap.CreateFromStream(ms);

   image1.Bitmap:=img;

  finally

      ms.Free;

      b64.Free;

  end;

end;

 编译，然后在mac 上ios模拟器上运行，显示下面的效果：

整体感觉，ios 的模拟器比android 的速度快多了。