以下代码块用于将图像文件提交到数据库。它已停止工作：即使它打印SUCCESS，服务器上也没有可见的图像。关于如何调试的任何建议？
编辑
我在调试器中打印了 imageData 并得到了一个内存地址数组，所以我几乎可以肯定我有一个图像。
- (void)postActivityImage:(Spot*)localSpot
{
NSLog(@"%s",__func__);
NSString *url = [NSString stringWithFormat:@"v1/activity/%@/image", localSpot.uniqueID];
UIImage *image = [UIImage imageWithContentsOfFile:localSpot.imageLocalURL];
NSData *imageData = UIImageJPEGRepresentation(image, 0.5f);
NSURLRequest *request = [httpClient_ multipartFormRequestWithMethod:@"POST"
path:url
parameters:nil
constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[formData appendPartWithFileData:imageData
name:@"test"
fileName:@"test"
mimeType:@"image/jpeg"];
}];
AFJSONRequestOperation *ro;
ro = [AFJSONRequestOperation JSONRequestOperationWithRequest:request
success:^(NSURLRequest *request, NSURLResponse *response, id JSON) {
NSLog(@"success: %@", JSON);
NSLog(@"SUCCESS - IMAGE POSTED.");
[self updateSpotSubmitInProgressStatusWithActivityFinished:ImagePost andSuccess:YES];
[[NSNotificationCenter defaultCenter] postNotificationName:SUBMIT_STATUS object:self userInfo:nil];
self.spot.imageSubmitted = YES;
} failure:^(NSURLRequest *request, NSURLResponse *response, NSError *error, id JSON) {
[self updateSpotSubmitInProgressStatusWithActivityFinished:ImagePost andSuccess:NO];
NSDictionary *dic = [[NSDictionary alloc] initWithObjectsAndKeys:error, @"Error", nil];
[[NSNotificationCenter defaultCenter] postNotificationName:SUBMIT_STATUS object:self userInfo:dic];
NSLog(@"%s ERROR: %@", __func__, error);
NSLog(@"%s RESPONSE: %@",__func__, response);
NSLog(@"%s FAIL json response: %@",__func__, JSON);
}];
[httpClient_ enqueueHTTPRequestOperation:ro];
}