Question

NSData *imageData = UIImagePNGRepresentation(image);

如何使用 POST 发送图像数据?

Answer 1

下列代码应有助于帮助

NSData *imageData = UIImagePNGRepresentation(image);

NSURL *yourURL = ...
NSMutableURLRequest *yourRequest = [NSMutableURLRequest requestWithURL:yourURL 
                                                           cachePolicy:NSURLRequestUseProtocolCachePolicy 
                                                       timeoutInterval:60.0];
//Set request to post
[yourRequest setHTTPMethod:@"POST"];

//Set content type 
[yourRequest setValue:@"image/png" forHTTPHeaderField:@"Content-Type"];

// Set authorization header if required
...

// set data
[yourRequest setHTTPBody:imageData];


// create connection and set delegate if needed
NSURLConnection *yourConnection = [[NSURLConnection alloc] initWithRequest:yourRequest 
                                                                  delegate:self
                                                          startImmediately:YES];

请注意,假定你正在使用ARC。

Answer 2

You can check this answer, if you are okay with using NSURLConnection https://stackoverflow.com/a/10750428/591951

此文章解释如何 POST 音频文件, 但是您可以使用相同方法上传任何文件

Answer 3

您可以使用 ASIHTTP 请求库: < a href=> http://allseing-i.com/ ASIHTTP request/" rel="nofollow" > http://allseing-i.com/ ASIHTTP request/

然后就很容易了:

ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];

// Upload an NSData instance
[request setData:imageData withFileName:@"myphoto.jpg" andContentType:@"image/jpeg" forKey:@"photo"];

有关如何使用的信息:http://allseeing-i.com/ASIHTTP Request/How-to-use" rel=“nofollow”>http://allseing-i.com/ASIHTTP request/How-to-use

友情链接