AFNetworking上传图片，服务器接收不到

原来一直都没问题的，不知道什么原因从昨天开始就上传不了，没报错，但是服务器就是接收不到。。

 +(void)uploadImgWithImgData:(NSData *)imgData loginName:(NSString *)loginName type:(NSString *)type idStr:(NSString *)idStr{
    NSDate *date = [NSDate date];
    NSString *dateStr = (NSString *)date;
    NSString *fileName = [NSString stringWithFormat:@"%@.jpg",dateStr];

    NSString *currentURL = @"/up/save";
    NSString *urlStr= [NSString stringWithFormat:@"%@%@?loginName=%@&type=%@&id=%@",UPLOADIMGBASEURL,currentURL,loginName,type,idStr] ;
    NSLog(@"urlstr:%@",urlStr);
    AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
    [manager POST:urlStr parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
        [formData appendPartWithFileData:imgData name:@"pic" fileName:fileName mimeType:@"image/jpeg"];
    } success:^(AFHTTPRequestOperation *operation, id responseObject) {
         NSLog(@"success:%@",responseObject);
        [Util showMsgSendFromServer:[responseObject objectForKey:@"msgs"]];
    } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
         NSLog(@"eerr:%@",error);
    }];




}

更新：在网上搜到这个：

问一下怎么抓包？

可能是上传的图片太大。

AFNetworking上传图片确实有问题，后来我们改了，参考下

  NSOperationQueue *oqueue = [NSOperationQueue currentQueue];

    [NSURLConnection sendAsynchronousRequest:request queue:oqueue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
        NSString* result = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];
        NSDictionary *dic = [GlobalModel jsonStrToJsonAryOrJsonDic:result];
       //通过dic来查看服务器返回的结果
    }];