AFNetworking 2响应错误(内容类型:text/html而非JSON) [英] AFNetworking 2 Response Error (Content type: text/html and not JSON)

问题描述

在尝试了有关该主题的几乎所有答复后，我上来的问题仍未得到有效的解决.

问题:因此，从AFNetworking 1.3移植后，我已经使用AFNetworking 2.0.3实现了我应用的上传部分:

-(void)commandWithParams:(NSMutableDictionary*)params onCompletion:(JSONResponseBlock)completionBlock {

    NSData* uploadFile = nil;
if ([params objectForKey:@"file"]) {
    uploadFile = (NSData*)[params objectForKey:@"file"];
    [params removeObjectForKey:@"file"];
}

 AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:[NSURL URLWithString:@"http://54.204.17.38"]];

 manager.responseSerializer = [AFJSONResponseSerializer serilizer];
 manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"application/json"];

 AFHTTPRequestOperation *apiRequest = [manager POST:@"/API" parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

     if (uploadFile) {
         [formData appendPartWithFileData:uploadFile name:@"file" fileName:@"photo.jpg" mimeType:@"image/jpeg"];
     }

} success:^(AFHTTPRequestOperation *operation, id responseObject) {
    completionBlock(responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    completionBlock([NSDictionary dictionaryWithObject:[error localizedDescription] forKey:@"error"]);
}];

[apiRequest start];

}

使用此代码时出现的错误是请求失败:不可接受的内容类型:text/html"，我知道您可能想知道服务器是否以正确的JSON响应，我有充分的理由去思考是在检查浏览器中响应标题为"MIME type: application/json"的标题之后.另外，我也在我的API(PHP API)顶部使用了'header('Content-type:application/json')'.现在，如果我将序列化类型更改为'AFHTTPResponseSerializer'而不是'AFJSONResponseSerializer'，它不会吐出JSON error，但是会给我一个不同的错误(随机的无法识别的选择器错误).

关于为什么我似乎无法从这种方法中得到JSON响应的任何想法?

解决方案

您可以将AFHTTPSessionManager设置为接受任何MIME类型:

manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];

After trying nearly every response on the subject, I've come up without a working answer to my problem.

The problem: So I've implemented the uploading portion of my app using AFNetworking 2.0.3 after porting from AFNetworking 1.3:

-(void)commandWithParams:(NSMutableDictionary*)params onCompletion:(JSONResponseBlock)completionBlock {

    NSData* uploadFile = nil;
if ([params objectForKey:@"file"]) {
    uploadFile = (NSData*)[params objectForKey:@"file"];
    [params removeObjectForKey:@"file"];
}

 AFHTTPRequestOperationManager *manager = [[AFHTTPRequestOperationManager alloc] initWithBaseURL:[NSURL URLWithString:@"http://54.204.17.38"]];

 manager.responseSerializer = [AFJSONResponseSerializer serilizer];
 manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"application/json"];

 AFHTTPRequestOperation *apiRequest = [manager POST:@"/API" parameters:params constructingBodyWithBlock:^(id<AFMultipartFormData> formData) {

     if (uploadFile) {
         [formData appendPartWithFileData:uploadFile name:@"file" fileName:@"photo.jpg" mimeType:@"image/jpeg"];
     }

} success:^(AFHTTPRequestOperation *operation, id responseObject) {
    completionBlock(responseObject);
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    completionBlock([NSDictionary dictionaryWithObject:[error localizedDescription] forKey:@"error"]);
}];

[apiRequest start];

}

The error I get when using this code is "Request failed: unacceptable content-type: text/html" I know you might be wondering if the server is responding with proper JSON, and I have every reason to think it is after inspecting the response headers in my browser that say 'MIME type: application/json'. Also, I am using 'header('Content-type: application/json')' at the top of my API as well (PHP API). Now, if I change the serialization type to 'AFHTTPResponseSerializer' instead of 'AFJSONResponseSerializer', it will not spit out the JSON error, but it will give me a different error (a random unrecognized selector error).

Any thoughts on why I cannot seem to get a JSON response out of this method?

解决方案

You can set the AFHTTPSessionManager to accept any MIME Type:

manager.responseSerializer.acceptableContentTypes = [NSSet setWithObject:@"text/html"];

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