ios - 带有 IOS : getting multipart data (json + image) via POST 的 Django

Question

我是 Django 和 IOS 的新手。我陷入了这种多部分数据传递，需要您的建议!

目前，我正在研究图像上传功能。从客户端，我想发送图像文件和附加信息(例如 access_token)。在服务器端，我尝试通过 request.raw_post_data 获取 json 数据，通过 reuqest.FILES 获取图像

事实证明，我只能获取 JSON 数据或图像，而不能同时获取两者。更糟糕的是，客户端只返回 500 错误，没有其他信息...

这是客户端代码

NSURL *url = [NSURL URLWithString:urlPath];
AFHTTPClient *httpClient = [[AFHTTPClient alloc] initWithBaseURL:url];

// The parameter to send
NSDictionary * params = dictionaryToSent;

// the image need to upload
NSData *imageData = UIImageJPEGRepresentation(image, 1);
NSMutableURLRequest *request = [httpClient multipartFormRequestWithMethod:@"POST" path:@"" parameters:params constructingBodyWithBlock: ^(id <AFMultipartFormData>formData) {
    [formData
     appendPartWithFileData:imageData
     name:@"image"
     fileName:@"uniqueFileName"
     mimeType:@"image/jpeg"];
}];

AFJSONRequestOperation* jsonOperation=[[AFJSONRequestOperation alloc]initWithRequest:request];

[jsonOperation setUploadProgressBlock:^(NSInteger bytesWritten, NSInteger totalBytesWritten, NSInteger totalBytesExpectedToWrite) {

    NSLog(@"Sent %d of %d bytes", totalBytesWritten, totalBytesExpectedToWrite);

}];

[jsonOperation setCompletionBlockWithSuccess: ^(AFHTTPRequestOperation *operation, id JSON) {

   // Handler for request is completed    
}failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    //Handler for request is failured;
}];

[jsonOperation start];

我在服务器端尝试了两种方法。一个是给了我 500 个错误的表单

form = UploadFileForm(request.POST, request.FILES)

另一种如下(请忽略缩进问题)

data=json.loads(request.raw_post_data)
ck_token = data['access_token']
if 'image' in request.FILES:
upload = request.FILES['image']
filename = upload.name
user = Basic.objects.get(ck_token = ck_token)
post = Post(user_id = user.user_id, image = upload, caption = "Hello World")
post.save()
ret_json = { 
    'success': True, 
    'post_id': post.id
}
else:
ret_json = { 
    'success': False,
    'error_message': "image not found"
}

使用第二种方法，我可以上传图片，但找不到 access_token。我想知道 access_token 存储在哪里 -.-|||还是客户端的问题？

非常感谢您的帮助!!!!

Answer 1

应该是服务器端的问题。 token 信息实际上不是从 request.raw_post_data 中获取，而是在 request.POST 中。所以它会像:

ck_token = request.POST['access_token']