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我需要将图片从 iphone 应用程序上传到服务器。

我使用此代码在 localhost 上尝试：

  NSData *storeData = UIImageJPEGRepresentation(pictureItem, 90);
                NSString *URLString = @"http://localhost:8080/image_item/upload.php";

                NSMutableURLRequest *request  = [[NSMutableURLRequest alloc] init];
                [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 *body = [NSMutableData data];
                [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
                [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%d.jpg\"\r\n", idItem] dataUsingEncoding:NSUTF8StringEncoding]];
                [body appendData:[NSData dataWithData:storeData]];
                [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
                [request setHTTPBody:body];

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

使用 image_item 我的文件夹来存储图像， idItem 是图片的名称。

我调用了一个 upload.php 页面：

   <?php
$uploaddir = './';      //Uploading to same directory as PHP file
$file = basename($_FILES['userfile']['name']);
$uploadFile = $file;
$newName = $uploadDir . $uploadFile;


if (is_uploaded_file($_FILES['userfile']['tmp_name'])) {
    echo "Temp file uploaded. \r\n";
} else {
    echo "Temp file not uploaded. \r\n";
}

if ($_FILES['userfile']['size']> 300000) {
    exit("Your file is too large."); 
}

if (move_uploaded_file($_FILES['userfile']['tmp_name'], $newName)) {
    $postsize = ini_get('post_max_size');   //Not necessary, I was using these
    $canupload = ini_get('file_uploads');    //server variables to see what was 
    $tempdir = ini_get('upload_tmp_dir');   //going wrong.
    $maxsize = ini_get('upload_max_filesize');
}
?>

但问题如下：文件夹中有我的图片，名称好，但我无法打开图片。出现以下错误：它可能已损坏或使用了预览无法识别的文件格式。

所以我不明白......有人可以帮助我吗？

谢谢。

4

1 回答 1

2

我找到了解决方案。正文中缺少一条线。正确的代码在这里：

NSString *boundary = @"---------------------------14737809831466499882746641449";
            NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
            [request addValue:contentType forHTTPHeaderField:@"Content-Type"];

            NSMutableData *body = [NSMutableData data];
            [body appendData:[[NSString stringWithFormat:@"\r\n--%@\r\n",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
            [body appendData:[[NSString stringWithFormat:@"Content-Disposition: form-data; name=\"userfile\"; filename=\"%d.jpg\"\r\n", idItem] dataUsingEncoding:NSUTF8StringEncoding]];
            [body appendData:[[NSString stringWithFormat:@"Content-Type: application/octet-stream\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
            [body appendData:[NSData dataWithData:storeData]];
            [body appendData:[[NSString stringWithFormat:@"\r\n--%@--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
            [request setHTTPBody:body];

            NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
            NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
于 2013-02-25T23:37:31.413 回答