failure:^(id error) {
[self hideLoadingHUD];
if([error code] == NSURLErrorCancelled){
return ;
}
if([error isKindOfClass:[NSString class]]){
[self showNoNetInfoHUDWithMsg:error hideAfter:3.0];
}else{
[self showErrorInfoHUDWithMsg:@"网络连接错误!" hideAfter:3.0];
}
}];