使用AFNetworking和PHP从照片库上传所选图像 [英] Uploading selected image from photo library using AFNetworking and PHP
问题描述
我正在尝试使用AFNetworking上传从照片库中选择的图像，但我有点困惑。一些代码示例直接使用图像数据进行上传，而另一些则使用文件路径。我想在这里使用AFNetworking示例代码：
I am trying to upload an image which selected from photo library using AFNetworking but I am little confused. Some code samples are using image data directly for upload and some are using file path. I want to use AFNetworking sample code here:
NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration
defaultSessionConfiguration];
AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
NSURL *URL = [NSURL URLWithString:@"http://example.com/upload"];
NSURLRequest *request = [NSURLRequest requestWithURL:URL];
NSURL *filePath = [NSURL fileURLWithPath:@"file://path/to/image.png"];
NSURLSessionUploadTask *uploadTask = [manager uploadTaskWithRequest:request fromFile:filePath progress:nil completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
if (error) {
NSLog(@"Error: %@", error);
} else {
NSLog(@"Success: %@ %@", response, responseObject);
}
}];
[uploadTask resume];
但是我不知道如何从照片库中获取图像的路径。
谁能告诉我如何从照片库中获取我选择的图像的路径吗？
But I do not know how can I get path of image which I have selected from photo library. Can anyone tell me how can I get path of image which I have selected from photo library?
编辑1：
好！我找到以下路径解决方案：
EDIT 1:
OK! I have found following solution for path:
NSString *path = [NSTemporaryDirectory()
stringByAppendingPathComponent:@"upload-image.tmp"];
NSData *imageData = UIImageJPEGRepresentation(originalImage, 1.0);
[imageData writeToFile:path atomically:YES];
[self uploadMedia:path];
现在仍然很困惑，因为我在服务器上创建了一个用于上传图像的文件夹。但是，AFNetworking将如何在不访问任何service.php页面的情况下将此图像上传到我的文件夹。只是 http://example.com/upload 就足够了吗？当我尝试上传时，出现以下错误：
Now am still confused becouse I have created a folder for uploaded images on my server. But how AFNetworking will upload this image to my folder without accessing any service.php page. Just http://example.com/upload is enough? When I try to upload I am getting following error:
Error:
Error Domain=kCFErrorDomainCFNetwork
Code=303 "The operation couldn’t be completed. (kCFErrorDomainCFNetwork error 303.)"
UserInfo=0x1175a970 {NSErrorFailingURLKey=http://www.olcayertas.com/arendi,
NSErrorFailingURLStringKey=http://www.olcayertas.com/arendi}
编辑2：
好。我设法通过以下代码解决错误：
EDIT 2:
OK. I have managed to solve error with following code:
-(void)uploadMedia:(NSString*)filePath {
NSURLSessionConfiguration *configuration =
[NSURLSessionConfiguration defaultSessionConfiguration];
AFURLSessionManager *manager =
[[AFURLSessionManager alloc] initWithSessionConfiguration:configuration];
manager.responseSerializer = [AFHTTPResponseSerializer serializer];
NSURL *requestURL =
[NSURL URLWithString:@"http://www.olcayertas.com/fileUpload.php"];
NSMutableURLRequest *request =
[NSMutableURLRequest requestWithURL:requestURL];
[request setHTTPMethod:@"POST"];
NSURL *filePathURL = [NSURL fileURLWithPath:filePath];
NSURLSessionUploadTask *uploadTask =
[manager uploadTaskWithRequest:request
fromFile:filePathURL progress:nil
completionHandler:^(NSURLResponse *response, id responseObject, NSError *error) {
if (error) {
NSLog(@"Error: %@", error);
} else {
NSLog(@"Success: %@ %@", response, responseObject);
}
}];
[uploadTask resume];
}
我正在服务器端使用以下PHP代码上传文件：
I am using following PHP code in server side for uploading file:
<?php header('Content-Type: text/plain; charset=utf-8');
try {
// Undefined | Multiple Files | $_FILES Corruption Attack
// If this request falls under any of them, treat it invalid.
if (!isset($_FILES['upfile']['error']) ||
is_array($_FILES['upfile']['error'])) {
throw new RuntimeException('Invalid parameters.');
error_log("File Upload: Invalid parameters.", 3, "php2.log");
}
// Check $_FILES['upfile']['error'] value.
switch ($_FILES['upfile']['error']) {
case UPLOAD_ERR_OK:
break;
case UPLOAD_ERR_NO_FILE:
throw new RuntimeException('No file sent.');
error_log("File Upload: No file sent.", 3, "php2.log");
case UPLOAD_ERR_INI_SIZE:
case UPLOAD_ERR_FORM_SIZE:
throw new RuntimeException('Exceeded filesize limit.');
error_log("File Upload: Exceeded filesize limit.", 3, "php2.log");
default:
throw new RuntimeException('Unknown errors.');
error_log("File Upload: Unknown errors.", 3, "php2.log");
}
// You should also check filesize here.
if ($_FILES['upfile']['size'] > 1000000) {
throw new RuntimeException('Exceeded filesize limit.');
error_log("File Upload: Exceeded filesize limit.", 3, "php2.log");
}
// DO NOT TRUST $_FILES['upfile']['mime'] VALUE !!
// Check MIME Type by yourself.
$finfo = new finfo(FILEINFO_MIME_TYPE);
if (false === $ext = array_search(
$finfo->file($_FILES['upfile']['tmp_name']),
array(
'jpg' => 'image/jpeg',
'png' => 'image/png',
'gif' => 'image/gif',
), true)) {
throw new RuntimeException('Invalid file format.');
error_log("File Upload: Invalid file format.", 3, "php2.log");
}
// You should name it uniquely.
// DO NOT USE $_FILES['upfile']['name'] WITHOUT ANY VALIDATION !!
// On this example, obtain safe unique name from its binary data.
if (!move_uploaded_file($_FILES['upfile']['tmp_name'], sprintf('./uploads/%s.%s', sha1_file($_FILES['upfile']['tmp_name']), $ext))) {
throw new RuntimeException('Failed to move uploaded file.');
error_log("File Upload: Failed to move uploaded file.", 3, "php2.log");
}
echo 'File is uploaded successfully.';
error_log("File Upload: File is uploaded successfully.", 3, "php2.log");
} catch (RuntimeException $e) {
echo $e->getMessage();
error_log("File Upload: " . $e->getMessage(), 3, "php2.log");
}
?>
编辑3：
现在，我了解到$ _FILES如何工作。但是，当我运行代码时，却收到成功消息，但是文件没有上传到服务器。知道有什么问题吗？
EDIT 3:
Now I have learned how $_FILES works. How ever when I run my code I am getting success message but file is not uploading to server. Any idea what might be wrong?
推荐答案
使用以下代码
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[picker dismissViewControllerAnimated:YES completion:nil];
UIImage *image = info[UIImagePickerControllerOriginalImage];
NSMutableDictionary *parameters = [[NSMutableDictionary alloc]init];
[parameters setObject:@"imageUploaing" forKey:@"firstKey"];
NSString *fileName = [NSString stringWithFormat:@"%ld%c%c.jpg", (long)[[NSDate date] timeIntervalSince1970], arc4random_uniform(26) + 'a', arc4random_uniform(26) + 'a'];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSData *data = UIImageJPEGRepresentation(image, 0.5);
[manager POST:@"http://example.com/resources.json" parameters:parameters constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {
[formData appendPartWithFileData:data name:@"image" fileName:fileName mimeType:@"image/jpeg"];
} success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(@"Success: %@", responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(@"Error: %@", error);
}];
}
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