Question

我正在尝试将图片/视频上传到适用于iOS的网络服务器。这个服务器的上传部分工作正常。我使用Android版本检查了它，我已经在Android应用中实现了上传方法。所以我在stackoverflow.com上找到了一些iOS代码首先，我使用以下代码上传图像。但是我无法上传并获得以下结果。我在iOS8 SDK上使用XCode6.1。

Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo=0x7fe24348d0b0 {NSUnderlyingError=0x7fe2434be120 "The request timed out.", NSErrorFailingURLStringKey=ServerURL, NSErrorFailingURLKey=ServerURL, NSLocalizedDescription=The request timed out.}

以下是我正在使用的代码。

  NSString* serverURL = @"http://www.myserver.com/file/postMedia.php";
  UIImage *image = [UIImage imageNamed:@"sample.png"];
  NSData *imageData = UIImageJPEGRepresentation(image, 0.5);
  NSDictionary *param = @{@"userID":@"master",


  [manager POST:serverURL parameters:param constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
   [formData appendPartWithFileData:imageData name:@"uploadedfile_thumb" fileName:@"photo.jpg" mimeType:@"image/jpeg"];

} success:^(AFHTTPRequestOperation *operation, id responseObject) {
    ....
        });

        return;
    }

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    ....
 });

当然，服务器工作正常。我已经使用Android代码进行了测试。所以我想知道iOS的确切代码。

谢谢

Answer 1

这是我使用AFNetworking将图像上传到服务器的工作代码：

+ (void)uploadImage:(UIImage *)image
             ForUser:(WECUser *)user
    withSuccessBlock:(void (^)(NSDictionary *response))resultBlock
        faliureBlock:(void (^)(NSError *error))faliureBlock {
  NSDateFormatter *formatter = [[NSDateFormatter alloc] init];

  formatter.dateFormat = @"yyyyMMddHHmmss";
  NSString *dateString = [formatter stringFromDate:[NSDate date]];
  NSString *fileName =
      [NSString stringWithFormat:@"user_image_%@.jpg", dateString];

  NSDictionary *dictionary = @{
    @"user_id" : user._id,
    @"resource_id" : user._id,
    @"functioncode" : @"2000",
    @"app_id" : [WECURLGenerator stringOfAppID],
    @"file_name" : fileName
  };

  NSURLRequest *request = [[AFHTTPRequestSerializer serializer]
      multipartFormRequestWithMethod:
          @"POST" URLString:[WECURLGenerator stringOfImageUploadingBaseURL]
                          parameters:dictionary
           constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
               [formData
                   appendPartWithFileData:UIImageJPEGRepresentation(image, 0.6)
                                     name:@"file1"
                                 fileName:fileName
                                 mimeType:@"jpg"];
           } error:(NULL)];

  AFHTTPRequestOperation *operation =
      [[AFHTTPRequestOperation alloc] initWithRequest:request];

  [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation,
                                             id responseObject) {
      NSDictionary *resultDict =
          [NSJSONSerialization JSONObjectWithData:responseObject
                                          options:NSJSONReadingMutableLeaves
                                            error:nil];
      resultBlock(resultDict[@"record"]);
  } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
      faliureBlock(error);
  }];

  [operation start];
}

希望这有帮助。

Answer 2

您的代码看起来很好，我使用相同的代码使用AFNetworking上传图像。但是你还没有提到你如何选择图像。因为您无法直接上传图片，如：

UIImage *image = [UIImage imageNamed:@"sample.png"];

您是否正在使用UIImagepickerController来挑选图片？

如果是，请参阅我的代码;

-(IBAction)chooseImg:(id)sender{

if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
    picker = [[UIImagePickerController alloc]init];
    picker.allowsEditing = NO;
    picker.delegate = self;
    picker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType: UIImagePickerControllerSourceTypeCamera];
    [self.navigationController presentViewController:picker animated:YES completion:nil];
}
else{
    picker = [[UIImagePickerController alloc]init];
    picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
    picker.allowsEditing = YES;
    picker.delegate = self;
    picker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
    [self.navigationController presentViewController:picker animated:YES completion:nil];

}
}

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
NSURL *name = [info objectForKey:UIImagePickerControllerReferenceURL];
image = [info objectForKey:UIImagePickerControllerOriginalImage];
ALAssetsLibraryAssetForURLResultBlock resultBlock = ^(ALAsset *imageAsset){
    ALAssetRepresentation *imageRep = [imageAsset defaultRepresentation];
    NSDictionary *metadata = imageAsset.defaultRepresentation.metadata;
    NSLog(@"Meta:%@",metadata);
    NSString *str = [imageRep filename];
    txtImg.text = str;
};
ALAssetsLibrary *assetLib = [[ALAssetsLibrary alloc]init];
[assetLib assetForURL:name resultBlock:resultBlock failureBlock:nil];
[self.navigationController dismissViewControllerAnimated:YES completion:nil];
}

注意：这里我使用元数据来显示图像的名称，没有必要跳过这个。

比上传部分：

NSString* serverURL = @"http://www.myserver.com/file/postMedia.php";
  //UIImage *image = [UIImage imageNamed:@"sample.png"];
  NSData *imageData = UIImageJPEGRepresentation(image, 0.5);
  NSDictionary *param = @{@"userID":@"master",


  [manager POST:serverURL parameters:param constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
   [formData appendPartWithFileData:imageData name:@"uploadedfile_thumb" fileName:@"photo.jpg" mimeType:@"image/jpeg"];

} success:^(AFHTTPRequestOperation *operation, id responseObject) {
....
    });

    return;
}

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
....
 });

这适用于我上传图片。希望对你有效。

如何使用AFNetworking将图像/照片上传到服务器？

2 个答案: