iphone - iOS - 使用 ImageShack JSON API 上传图片

Question

我正在尝试使用他们的 API 将图片上传到 ImageShack :

- (void)uploadImage2:(UIImage *)image
{
    NSData *imageToUpload = UIImagePNGRepresentation(image);

    if (imageToUpload)
    {
        NSMutableDictionary *parameters = [[NSMutableDictionary alloc] init];
        [parameters setObject:@"XXXX" forKey:@"key"];
        [parameters setObject:@"json" forKey:@"format"];
        //[parameters setObject:@"application/json" forKey:@"Content-Type"];

        AFHTTPClient *client= [AFHTTPClient clientWithBaseURL:[NSURL URLWithString:@"https://post.imageshack.us"]];

        NSMutableURLRequest *request = [client multipartFormRequestWithMethod:@"POST" path:@"/upload_api.php" parameters:parameters constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {
            [formData appendPartWithFileData: imageToUpload name:@"image" fileName:@"logo.png" mimeType:@"image/png"];
        }];

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

        [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
         {
             NSDictionary *jsons = [NSJSONSerialization JSONObjectWithData:responseObject options:kNilOptions error:nil];
             NSLog(@"response: %@",jsons);

         }
                                         failure:^(AFHTTPRequestOperation *operation, NSError *error)
         {
             if([operation.response statusCode] == 403)
             {
                 //NSLog(@"Upload Failed");
                 return;
             }
             //NSLog(@"error: %@", [operation error]);

         }];

        [operation start];
    }
}

作为响应，我收到了没有错误解释的错误消息:

{
    "error_code" = "upload_failed";
    "error_message" = "Upload failed";
    status = 0;
}

有人可以帮我吗？正确的做法是什么？

Answer 1

好的，我已经设法解决了我的问题。所有参数都必须在表单主体中设置，而不是作为请求值。看起来很简单:

 NSData *imageToUpload = UIImagePNGRepresentation([UIImage imageNamed:@"logo.png"]);


    if (imageToUpload)
    {
        NSString *urlString = @"https://post.imageshack.us";

        AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:[NSURL URLWithString:urlString]];
        NSMutableURLRequest *request = [httpClient multipartFormRequestWithMethod:@"POST" path:@"/upload_api.php" parameters:nil constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {
            [formData appendPartWithFileData:imageToUpload name:@"fileupload" fileName:@"image" mimeType:@"image/png"];
            [formData appendPartWithFormData:[@"XXXXXX" dataUsingEncoding:NSUTF8StringEncoding] name:@"key"];
            [formData appendPartWithFormData:[@"json" dataUsingEncoding:NSUTF8StringEncoding] name:@"format"];
        }];



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

        [operation setCompletionBlockWithSuccess:^(AFHTTPRequestOperation *operation, id responseObject)
         {
             NSDictionary *jsons = [NSJSONSerialization JSONObjectWithData:responseObject options:kNilOptions error:nil];
             NSLog(@"response: %@",jsons);

         }
                                         failure:^(AFHTTPRequestOperation *operation, NSError *error)
         {
             if([operation.response statusCode] == 403)
             {
                 NSLog(@"Upload Failed");
                 return;
             }
             NSLog(@"error: %@", [operation error]);

         }];

        [httpClient enqueueHTTPRequestOperation:operation];
    }}

希望这会对某人有所帮助!