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我目前正在通过 HTTP POST 将图像上传到我的服务器。使用下面的代码一切正常。

NSString *UDID = md5([UIDevice currentDevice].uniqueIdentifier);
NSString *filename = [NSString stringWithFormat:@"%@-%@", UDID, [NSDate date]];
NSString *urlString = @"http://taptation.com/stationary_data/index.php";
request= [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:@"POST"];
NSString *boundary = @"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];
NSMutableData *postbody = [NSMutableData data];
[postbody appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%@.jpg\"\r\n", filename] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[[NSString stringWithString:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[postbody appendData:[NSData dataWithData:imageData]];
[postbody appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:postbody];

NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(returnString);

但是，当我尝试将其转换为使用 Image Shacks XML API 时，它不会返回任何内容。ImageShack 的说明如下。

通过 POST 将以下变量发送到 imageshack。我们/index.php

上传文件; （图像）xml =“是”；（指定 XML 的返回）cookie；（注册码，可选）

有谁知道我应该从这里去哪里？

4

2 回答 2

2

您可能需要考虑使用ASIHTTPRequest，因为它会为您构建一个表单数据发布主体，并且可以减少很多麻烦，并且可以从磁盘流式传输请求主体，因此您在上传大图像时可以节省内存。

一个快速的谷歌发现了这个，这似乎表明你应该发布到 /upload_api.php 而不是 /index.php。

这样的事情可能是一个好的开始：

ASIFormDataRequest *request = [[[ASIFormDataRequest alloc] initWithUrl:[NSURL URLWithString:@"http://www.imageshack.us/upload_api.php"]] autorelease];
[request setFile:@"/path/to/file" forKey:@"fileupload"];
[request setPostValue:@"yes" forKey:@"xml"];
[request setPostValue:@"blahblah" forKey:@"cookie"];
//It looks as though you probably need these too
[request setPostValue:@"me@somewhere.com" forKey:@"email"];
[request setPostValue:@"blah" forKey:@"key"];
[request start];
if ([request error]) {
    NSLog(@"%@",[request error]);
} else {
    NSLog([request responseString]); // The xml that got sent back
}

警告：未经测试！

我使用了同步请求，因为您使用了，但您几乎可以肯定应该使用异步请求（带有 ASIHTTPRequest 的队列）。

于 2009-05-31T08:03:42.750 回答
2

花了我一段时间，但你需要使用 ASIHTTPREQUEST！

- (void)uploadToImageShack {
NSAutoreleasePool *paul = [[NSAutoreleasePool alloc] init];
UIImage *tempImage = self.selectedimage;
ASIFormDataRequest *request = [[[ASIFormDataRequest alloc] initWithURL:[NSURL URLWithString:@"http://www.imageshack.us/upload_api.php"]] autorelease];
NSData *imageData = UIImagePNGRepresentation(tempImage);
[request setFile:imageData withFileName:@"image" andContentType:@"image/png" forKey:@"fileupload"];
[request setPostValue:@"yes" forKey:@"xml"];
[request setPostValue:@"3ZQ7C09K708fce677d9cadee04811cfcbdf63361" forKey:@"key"];
[request setUseCookiePersistence:NO];
[request startSynchronous];
NSError *error = [request error];
if (error) {
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error" message:[error localizedDescription] delegate:nil cancelButtonTitle:@"Dismiss" otherButtonTitles:nil];
    [alert show];
    [alert release];
}
else if (!error) {
    if ([request responseString]) {
        parser = [[NSXMLParser alloc] initWithData:[[NSData alloc] initWithData:[request responseData]]];
        [parser setDelegate:self];
        [parser parse];
    }
}   
[paul drain];
}
于 2011-02-16T01:31:14.570 回答