问服务器在从iPhone应用程序发布时不获取图像数据

EN

-(IBAction)upPic:(id)sender{
UploadImage *up_image = [[UploadFood alloc] init];

  [up_image sendServerRequests:[NSDictionary  dictionaryWithObjectsAndKeys:@"pic1.jpg",@"filename",@"pic2.jpg",@"filename2", nil]  file:sharedClass.picData file1:sharedClass.picData2];


   }  

-(void)sendServerRequests:(NSDictionary *)bits file:(NSData *)file file1:(NSData *)file1 file2:(NSData *)file2 {
 NSLog(@"file  %@",file );


 [postbody appendData:[NSData dataWithData:file]];

 [postbody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data;  name=\"image2\"; filename=\"%@\"\r\n", [bits objectForKey:@"filename2"]]  dataUsingEncoding:NSUTF8StringEncoding]];
 [postbody appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];

  NSLog(@"file1 %@",file1);


  [postbody appendData:[NSData dataWithData:file1]];

  [postbody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"image3\"; filename=\"%@\"\r\n", [bits objectForKey:@"filename3"]] dataUsingEncoding:NSUTF8StringEncoding]];
  [postbody appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];

  NSLog(@"file2 %@",file2);  // i am able to print data here

  [postbody appendData:[NSData dataWithData:file2]];



  [postbody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];


   [request setHTTPBody:postbody];


  conn = [[NSURLConnection alloc] initWithRequest:request delegate:self];
    if (conn) {
    webData = [NSMutableData data];
   }


  }