上传图片时出现无法解析响应,是什么情况,code= -1017

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

manager.requestSerializer = [AFHTTPRequestSerializer serializer];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
manager.responseSerializer.acceptableContentTypes=[NSSet setWithObject:@"application/json"];
[manager POST:stringUrl parameters:nil constructingBodyWithBlock:^id<AFMultipartFormData> formData { [formData appendPartWithFileData:imageData name:@"imageFile"fileName:@"avatar.jpg"mimeType:@"image/jpg/file/png"];
} success:^AFHTTPRequestOperation *operation, NSData * responseObject { [MBProgressHUD stopMBProgressHUD:self.view]; NSData *doubi = responseObject; NSDictionary * dataDic = [NSJSONSerialization JSONObjectWithData:doubi options:NSJSONReadingAllowFragments error:nil]; // 成功 返回一个图片Url地址 } failure:^AFHTTPRequestOperation *operation, NSError *error { }];

NSURLErrorCannotParseResponse = -1017,

可能是返回数据的类型有问题。

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