使用 AFNetworking 从 ios 中的照片库上传图像？

Posted 2023-02-23

【中文标题】使用 AFNetworking 从 ios 中的照片库上传图像？

【英文标题】：Image upload from photo library in ios using AFNetworking?

【发布时间】：2015-10-08 10:06:04

【问题描述】：

我正在开发一个用户需要注册的应用。有一个图像上传选项，用户可以从 iPhone 的照片库中选择图像。我使用 AFNetworking 进行上传。但是分段上传有错误，这个问题附有错误日志。如果有人知道解决方案，请帮助我

提前致谢。

iOS 部分

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 
    [picker dismissViewControllerAnimated:YES completion:nil];
    UIImage * image = info [UIImagePickerControllerOriginalImage];

    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);
   // NSLog(@"DATA %@",data);
    manager.responseSerializer = [AFHTTPResponseSerializer serializer];
    NSString *key1 = @"123";
    NSString *key2 = @"asdf";


     [manager POST:@"http://192.168.0.100/fileupload.php" parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) 
        [formData appendPartWithFileData:data
                                    name:@"uploadedfile"
                                fileName:fileName mimeType:@"image/png"];

        [formData appendPartWithFormData:[key1 dataUsingEncoding:NSUTF8StringEncoding]
                                    name:@"email"];

        [formData appendPartWithFormData:[key2 dataUsingEncoding:NSUTF8StringEncoding]
                                    name:@"website"];

        // etc.
     success:^(AFHTTPRequestOperation *operation, id responseObject) 
        NSError *error = nil;
        NSDictionary *JSON = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingAllowFragments error:&error];
        if (error) 
            NSLog(@"Error serializing %@", error);
        
        NSLog(@"Dictionary %@", JSON);     failure:^(AFHTTPRequestOperation *operation, NSError *error) 
        NSLog(@"Error: %@", error);
    ];

php部分

<?php
    $uploaddir = 'uploads/';
    $file = basename($_FILES['uploadedfile']['name']);
    $uploadfile = $uploaddir . $file;

    echo "file=".$file; //is empty, but shouldn't

    if (move_uploaded_file($_FILES['uploadedfile']['tmp_name'], $uploadfile)) 
        echo $file;
    
    else 
        echo "error";
    
    ?>

错误

  imageupload[23252:237255] Error serializing Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (Something looked like a 'false' but wasn't around character 0.) UserInfo=0x7fee21fe1590 NSDebugDescription=Something looked like a 'false' but wasn't around character 0.

【参考方案1】：

我快速查看了您的代码并找到了

NSData *data = UIImageJPEGRepresentation(image, 0.5);

而你将 mimeType 指定为“image/png”，我认为这可能会导致错误。

【讨论】：

那么 mimeType 应该是什么？

AFHTTPRequestOperationManager 的 responseSerializer 默认为 AFJSONResponseSerializer，您的 php 脚本似乎没有返回 json 响应。

【参考方案2】：

试试这个：

-(void) uploadImage 

NSString *imagePath = [[NSUserDefaults standardUserDefaults] objectForKey:@"userimage"];
NSString * urlString = [stagingURL stringByReplacingOccurrencesOfString:@"user/" withString:@""];
NSString * uploadURL = @"Your URL where image to be uploaded";
NSLog(@"uploadImageURL: %@", uploadURL);
NSData *imageData = UIImageJPEGRepresentation([UIImage imageWithData:[NSData dataWithContentsOfFile:imagePath]], 0.5);

NSString *queryStringss = [NSString stringWithFormat:@"%@",uploadURL];
queryStringss = [queryStringss stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
manager.responseSerializer=[AFJSONResponseSerializer serializerWithReadingOptions:NSJSONReadingAllowFragments];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];
manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/plain"];

[manager POST:queryStringss parameters:nil constructingBodyWithBlock:^(id<AFMultipartFormData> formData) 
     [formData appendPartWithFileData:imageData name:@"file" fileName:@"file" mimeType:@"image/jpeg"];
 
      success:^(AFHTTPRequestOperation *operation, id responseObject) 

     NSLog(@"Success: %@ ***** %@", operation.responseString, responseObject);
     [MBProgressHUD hideAllHUDsForView:self.view animated:YES];
 
      failure:^(AFHTTPRequestOperation *operation, NSError *error) 
     [MBProgressHUD hideAllHUDsForView:self.view animated:YES];
     NSLog(@"Error: %@ ***** %@", operation.responseString, error);
 ];

【讨论】：

如何从图像选择器控制器获取图像路径？