NSString  *urlString  =  @"http://wxpay.weixin.qq.com/pub_v2/app/app_pay.php?plat=ios"   NSURLRequest  *request  =  [NSURLRequest  requestWithURL:[NSURL  URLWithString:urlString]]   NSOperationQueue  *queue  =  [[NSOperationQueue  alloc]  init]   [NSURLConnection  sendAsynchronousRequest:request11