AFNetworking 2.0 - "不可接受的内容类型:text/plain"

Question

我正在使用AFNetworking 2.0从我正在构建的服务(localhost现在开始)中读取JSON .很正常的东西.

Node正在发送JSON,如下所示:

res.setHeader('Content-Type','application/json');
res.end( JSON.stringify(...));

我的iOS首次传递代码试图像这样读取数据:

typedef void(^NextBlock)();
AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

manager.responseSerializer = [AFJSONResponseSerializer serializer];
[manager GET:self.newestTimestampURL.absoluteString
    parameters:nil
    success:^(AFHTTPRequestOperation *operation, id responseObject)
    {
        //NSDictionary *response =
        NSLog(@"got %@", responseObject );
    }
    failure:^(AFHTTPRequestOperation *operation, NSError *error)
    {
        NSLog(@"fail %@", error );
    }];

这是我得到的错误:

Error Domain=AFNetworkingErrorDomain Code=-1016 "Request failed: unacceptable content-type: text/plain" UserInfo=0xb783e30 {NSErrorFailingURLKey=http://localhost:3000/api/v1/log/newest, AFNetworkingOperationFailingURLResponseErrorKey=<NSHTTPURLResponse: 0xb656a70> { URL: http://localhost:3000/api/v1/log/newest } { status code: 200, headers {
Connection = "keep-alive";
ContentType = "application/json";
Date = "Fri, 27 Dec 2013 20:58:50 GMT";
"Transfer-Encoding" = Identity;
} }, NSLocalizedDescription=Request failed: unacceptable content-type: text/plain}

我可以卷曲(-i)url http://localhost:3000/api/v1/log/newest并获取我期望的数据,并且它是application/json,如预期的那样.如果我在我的Web浏览器中加载该数据,我会按照预期的工具检查器获得JSON.

但是使用AFNetworking,我得到了这个神秘的"不可接受的内容类型:text/plain"错误.任何的想法？

注意:我之前从未使用AFNetworking,所以我可能错误地使用它.

Answer 1

似乎服务器正在发送"text/html",默认情况下不支持此类型.为"acceptableContentTypes"添加@"text/html"

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

Answer 2

manager.responseSerializer = [AFHTTPResponseSerializer serializer];

为我工作.

Answer 3

为我工作.

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