使用MKNetworking上传图片时遇到内部错误500

Question

使用MKNetworking上传图片时遇到内部错误500

iosobjective-cimageuploadnsurlerrordomain

3

我已经从使用常规的图片上传方式（当时无法正常工作）转换为使用MKNetworking来协助我完成上传过程，我之所以使用这种方式是因为我发现它能提供更好的错误响应，并有助于解决我的问题。我得到了一个NSLog响应，其中包含一个错误信息。

2013-05-03 10:52:25.961 atmebeta[2420:907] Returning num rows
2013-05-03 10:52:25.967 atmebeta[2420:907] Returning num sections
2013-05-03 10:52:34.607 atmebeta[2420:907] -[MKNetworkEngine reachabilityChanged:] [Line 198] Server [atmeapp.com] is reachable via Wifi
2013-05-03 10:52:37.066 atmebeta[2420:907] -[MKNetworkOperation operationFailedWithError:] [Line 1345] Friday, May 3, 2013, 10:52:37 AM Pacific Daylight Time
Request
-------
curl -X POST "http://atmeapp.com/addavatar.php" -d "email=ooo@ooo.com"
--------
Response
--------
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<link rel="stylesheet" type="text/css" href="css/main.css" />
<!--[if lt IE 9]>
  <link rel="stylesheet" type="text/css" href="css/ie_8.css" />
<![endif]-->
</head>
<body>
    <div id="block_error">
        <div>
            <h2>Error 500 Internal Server Error</h2>
            <p>The web server is misconfigured please contact aaron@teknologenie.com</p>
<p>Please try to access the site later.</p>
        </div>
    </div>
</body>
</html>
, [The operation couldn’t be completed. (NSURLErrorDomain error 500.)]
2013-05-03 10:52:37.072 atmebeta[2420:907] Error Domain=NSURLErrorDomain Code=500 "The operation couldn’t be completed. (NSURLErrorDomain error 500.)" UserInfo=0x1d993d40 {Accept-Ranges=bytes, Server=Apache, Content-Length=693, Content-Type=text/html, Date=Fri, 03 May 2013 17:52:34 GMT}
2013-05-03 10:52:37.102 atmebeta[2420:907] -[MKNetworkOperation operationFailedWithError:] [Line 1353] State: 0

我可以通过一个html表单成功上传图片，因此我确定我的php.ini文件正常，并且允许我上传比我在iPhone上请求的更多的内容。

FileUploadDemoViewController.h

//
//  fileUploadDemoViewController.h
//  fileUploader
//
//  Created by Michael Roling on 5/7/12.
//  Copyright (c) 2012 NA. All rights reserved.
//

#import <UIKit/UIKit.h>
#import "fileUploadEngine.h"

@interface fileUploadDemoViewController : UIViewController <UIActionSheetDelegate, UIImagePickerControllerDelegate, UINavigationControllerDelegate>

@property (strong, nonatomic) fileUploadEngine *flUploadEngine;
@property (strong, nonatomic) MKNetworkOperation *flOperation;

@end

FileUploadDemoViewController.m

//
//  fileUploadDemoViewController.m
//  fileUploader
//
//  Created by Michael Roling on 5/7/12.
//  Copyright (c) 2012 NA. All rights reserved.
//

#import "fileUploadDemoViewController.h"
#import "MyClass.h"

@interface fileUploadDemoViewController ()

@end

@implementation fileUploadDemoViewController

@synthesize flUploadEngine = _flUploadEngine;
@synthesize flOperation = _flOperation;

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)viewDidUnload
{
    [super viewDidUnload];
    // Release any retained subviews of the main view.
}

- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
    return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}

- (IBAction)uploadPhoto:(id)sender {
    UIActionSheet *photoSourcePicker = [[UIActionSheet alloc] initWithTitle:nil
                                        delegate:self cancelButtonTitle:@"Cancel"
                                        destructiveButtonTitle:nil
                                        otherButtonTitles:  @"Take Photo",
                                        @"Choose from Library",
                                        nil,
                                        nil];

    [photoSourcePicker showInView:self.view];   
}

- (void)actionSheet:(UIActionSheet *)modalView clickedButtonAtIndex:(NSInteger)buttonIndex
{
    switch (buttonIndex)
    {
        case 0:
        {
            if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
                UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
                imagePicker.sourceType =  UIImagePickerControllerSourceTypeCamera;
                imagePicker.delegate = self;
                imagePicker.cameraFlashMode = UIImagePickerControllerCameraFlashModeOff;
                imagePicker.allowsEditing = YES;
                [self presentViewController:imagePicker animated:YES completion:NULL];
            }
            else {
                UIAlertView *alert;
                alert = [[UIAlertView alloc] initWithTitle:@"Error" 
                                                   message:@"This device doesn't have a camera." 
                                                  delegate:self cancelButtonTitle:@"Ok" 
                                         otherButtonTitles:nil];
                [alert show];                
            }
            break;
        }            
        case 1:
        {
            if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
                UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
                imagePicker.sourceType =  UIImagePickerControllerSourceTypePhotoLibrary;
                imagePicker.delegate = self;
                imagePicker.allowsEditing = YES;
                [self presentViewController:imagePicker animated:YES completion:NULL];
            }
            else {
                UIAlertView *alert;
                alert = [[UIAlertView alloc] initWithTitle:@"Error" 
                                                   message:@"This device doesn't support photo libraries." 
                                                  delegate:self cancelButtonTitle:@"Ok" 
                                         otherButtonTitles:nil];
                [alert show];                
            }            
            break;
        }
    }
}

- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    [self dismissViewControllerAnimated:YES completion:NULL];

    NSData *image = UIImageJPEGRepresentation([info objectForKey:UIImagePickerControllerOriginalImage], 0.1);

    self.flUploadEngine = [[fileUploadEngine alloc] initWithHostName:@"http://www.atmeapp.com" customHeaderFields:nil];

    NSMutableDictionary *postParams = [NSMutableDictionary dictionaryWithObjectsAndKeys:
                                        [MyClass str], @"email",
                                       nil];      
    self.flOperation = [self.flUploadEngine postDataToServer:postParams path:@"/addavatar.php" ];
    [self.flOperation addData:UIImageJPEGRepresentation(image, 0.5) forKey:@"userfile" mimeType:@"image/jpeg" fileName:image];

    [self.flOperation addCompletionHandler:^(MKNetworkOperation* operation) {
        NSLog(@"%@", [operation responseString]);
        /*   
            This is where you handle a successful 200 response
        */
    }     
    errorHandler:^(MKNetworkOperation *errorOp, NSError* error) {
        NSLog(@"%@", error);
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Error"
                                                        message:[error localizedDescription]
                                                       delegate:nil
                                              cancelButtonTitle:@"Dismiss"
                                              otherButtonTitles:nil];
        [alert show];        
    }];

    [self.flUploadEngine enqueueOperation:self.flOperation ];  

}
@end

fileUploadEngine.h

//
//  fileUploadEngine.h
//  fileUploader
//
//  Created by Michael Roling on 5/7/12.
//  Copyright (c) 2012 NA. All rights reserved.
//

#import "MKNetworkEngine.h"

@interface fileUploadEngine : MKNetworkEngine

-(MKNetworkOperation *) postDataToServer:(NSMutableDictionary *)params path:(NSString *)path;

@end

fileUploadEngine.m

//
//  fileUploadEngine.m
//  fileUploader
//
//  Created by Michael Roling on 5/7/12.
//  Copyright (c) 2012 NA. All rights reserved.
//

#import "fileUploadEngine.h"

@implementation fileUploadEngine

-(MKNetworkOperation *) postDataToServer:(NSMutableDictionary *)params path:(NSString *)path {

    MKNetworkOperation *op = [self operationWithPath:path
                                              params:params
                                          httpMethod:@"POST"
                                                 ssl:NO];
    return op;     
}

@end

最后但并非最不重要的，我的PHP。

$mysqli = new mysqli($host, $username, $password, $database);
    if ($stmt = $mysqli->prepare("UPDATE `user` SET imagepath=? WHERE email=?")) 
    {
        $stmt->bind_param('ss', $albumname, $email);

    $email = $_POST['email'];
    $uploaddir = 'images/users/';
    $file = basename($_FILES['userfile']['name']);
    $uploadfile = $uploaddir . $file;

    if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {

    }
    $albumname = $uploadfile;
    $stmt->execute();
        $stmt->close(); 
        }


    else {
        printf("Prepared Statement Error: %s\n", $mysqli->error);
    }

$mysqli->close();

我在我的服务器上的PHP日志中没有发现任何错误。

- NodeDad

您需要提供fileUploadEngine和flOperation的代码，以便我们了解正在发生什么。 - Cory Powers

根据curl命令行输出，要上传的文件没有传递到MKNetworkOperation，否则你会看到一个-F命令行选项。 - Cory Powers

已更新问题，并附上了与图像上传引擎相关的文件。你认为这是为什么，@CoryPowers？ - NodeDad

尝试设置 self.flOperation.postDataEncoding == MKNKPostDataEncodingTypeURL 并提供请求的 NSLog，curl 命令行应该有一个选项用于您的 userfile 参数。 - Cory Powers

同时将参数filename更改为字符串类型，

[self.flOperation addData:UIImageJPEGRepresentation(image, 0.5) forKey:@"userfile" mimeType:@"image/jpeg" fileName:@"avatar.jpg"]

。 - Cory Powers

显示剩余6条评论

2个回答

0

看起来基本正确，我刚刚在PHP中使用了MkNetworkKit /图像上传。我发现这里唯一错误的是这一行

[NSMutableDictionary dictionaryWithObjectsAndKeys:
                                   @"email", [MyClass str]

你可能想要交换@"email"和[MyClass str]，在使用dictionaryWithObjectsAndKeys时，值应该放在键的前面。

这是我的实现（在MKNetworkEngine的子类中）：

-(MKNetworkOperation*) uploadImage:(UIImage*)image onSuccess:(EmptyBlock)successBlock onError:(MKNKErrorBlock)errorBlock {
    NSMutableDictionary *params = [[NSDictionary dictionary]mutableCopy];
    [params setValue:@"[YOUR_VALUE]" forKey:@"[YOUR_KEY]"];
    MKNetworkOperation *op = [self operationWithPath:@"[YOUR_PATH]" params:params httpMethod:@"POST"];
    [op addData:UIImageJPEGRepresentation(image, 0.5) forKey:@"userfile" mimeType:@"image/jpeg" fileName:@"[YOUR_FILENAME]"];

    [op onCompletion:^(MKNetworkOperation *completedOperation) {
    if(successBlock) {
        successBlock();
    }
    } onError:^(NSError *error) {

        TFLog(@"RCNetworkEngine.uploadError:%@, error:%@", url, [error localizedDescription]);
        if(errorBlock)
            errorBlock(error);
    }];
    [self enqueueOperation:op];
    return op;
}

- Stefan Emanuelsson

我在想，也许是因为我的错误信息所说的原因，导致我的 PHP 无法识别它是一张图片，或者相反，我的 Objective-C 说它不是一张图片...你认为这可能是一个可能性吗？我会尝试你的代码，并切换这些参数，它们需要翻转的具体原因是什么？ - NodeDad

你是如何使用子类编写h文件的？我以前从未这样做过。 - NodeDad

我正在提供赏金来帮助我完成应用程序的这一部分。在完成其余部分时，我放弃了应用程序的这一部分。现在是完成图像上传的时候了。我将使用最新代码更新我的问题，但仍然收到“内部服务器错误500”的错误提示。 - NodeDad

我也尝试了你的解决方案，但我就是无法理解如何正确实现它，或者可能我已经理解了，只是遇到了一些服务器错误。 - NodeDad

网页内容由stack overflow 提供, 点击上面的

可以查看英文原文，
原文链接

- NodeDad · Accepted Answer

我通过切换到AFNetwork解决了我的问题，这是我的新代码

- (void) imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
    image.image = [info objectForKey:UIImagePickerControllerOriginalImage];
    [self->image setImage:image.image];
    [self  dismissViewControllerAnimated:YES completion:NULL];
    NSURL *url = [NSURL URLWithString:@"http://atmeapp.com"];
    AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];
    NSData *imageData = UIImageJPEGRepresentation(image.image, 1);
    NSDictionary *params = [NSDictionary dictionaryWithObjectsAndKeys:
                            @"email", [MyClass str],
                            nil];
    NSMutableURLRequest *request = [httpClient multipartFormRequestWithMethod:@"POST" path:@"/addavatar.php" parameters:params constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {
        [formData appendPartWithFileData:imageData name:@"userfile" fileName:[MyClass str] mimeType:@"image/jpeg"];
    }];

    AFHTTPRequestOperation *operation = [[AFHTTPRequestOperation alloc] initWithRequest:request];
    [operation setUploadProgressBlock:^(NSUInteger bytesWritten, long long totalBytesWritten, long long totalBytesExpectedToWrite) {
        NSLog(@"Sent %lld of %lld bytes", totalBytesWritten, totalBytesExpectedToWrite);
    }];
    [httpClient enqueueHTTPRequestOperation:operation];

}

我不确定为什么它能运行，但无论如何...非常烦躁。感谢大家的时间。