我正在尝试将图像上传到我的 PHP 服务器，但无法正常工作。当我尝试上传文件时，屏幕只是卡住(这是预期的 - 我正在使用 sendSynchronousRequest 直到我可以让它工作)大约一分钟，然后它返回一个空字符串作为响应。我已经为此工作了一天多，但似乎无法让它发挥作用。此外，图像实际上从未上传到服务器(我检查过)。提前致谢!

// Uploading the image
-(IBAction)uploadImage:(id)sender{
[self uploadImage:UIImageJPEGRepresentation(productImageView.image, 90)    filename:@"image.jpg"];
}

- (BOOL)uploadImage:(NSData *)imageData filename:(NSString *)filename{

// This isn't actually my url btw
NSString *urlString = @"http://www.mysite.com/uploadImage.php";


// setting up the request object now
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:@"POST"];

/*
 add some header info now
 we always need a boundary when we post a file
 also we need to set the content type

 You might want to generate a random boundary.. this is just the same
 as my output from wireshark on a valid html post
 */
NSString *boundary = @"---------------------------14737809831466499882746641449";
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];

/*
 now lets create the body of the post
 */
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:@"rn--%@rn",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Disposition: form-data; name=\"userfile\"; filename=\"ipodfile.jpg\"rn" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Type: application/octet-streamrnrn" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[[NSString stringWithFormat:@"rn--%@--rn",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
// setting the body of the post to the reqeust
[request setHTTPBody:body];

// now lets make the connection to the web
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];

NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Responce"
                                                message:returnString
                                               delegate:nil
                                      cancelButtonTitle:@"OK"
                                      otherButtonTitles:nil];
[alert show];
return ([returnString isEqualToString:@"OK"]);
}

还有我的 php 文件:

<?php
$uploaddir = ''; // Put in same directory as PHP file for debugging purposes
$file = basename($_FILES['userfile']['name']);
$uploadfile = $uploaddir . $file;

if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
    echo "Your file is called {$file}";
}

?>

最佳答案

您错过了 CRLF 字符的转义，例如

改变自

[body appendData:[[NSString stringWithFormat:@"rn--%@rn",boundary] 

到

[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] 

完整修复:

/*
 now lets create the body of the post
 */
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]]; // note: the preceding "\r\n" may be problematic if the server does not properly implement the "preamble" rule as specified in RFC 2046
[body appendData:[@"Content-Disposition: form-data; name=\"userfile\"; filename=\"ipodfile.jpg\"\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[@"Content-Type: application/octet-stream\r\n\r\n" dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];

关于php - 在 iOS 无法正常工作的情况下将图像上传到服务器，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/20900064/