通过AFNetworking 2.0访问DailyMile API [英] Accessing DailyMile API with AFNetworking 2.0

问题描述

因此，我正在从https站点发出JSON请求（检索了auth令牌后），并且像堆栈溢出时AFNetworking的其他十二个问题一样，我收到此错误：

So I'm making a JSON request from an https site (after retrieving the auth token) and like a dozen other problems with AFNetworking on stack overflow, I'm getting this error:

Error Domain=NSCocoaErrorDomain Code=3840 "The operation couldn’t be completed. (Cocoa error 3840.)" (JSON text did not start with array or object and option to allow fragments not set.) 

UserInfo=0x8dc2860 {NSDebugDescription=JSON text did not start with array or object and option to allow fragments not set.}

我用来发出此请求的代码如下：

The code I'm using to make this request is like such:

AFHTTPRequestSerializer *requestSerializer = [AFHTTPRequestSerializer serializer];
[requestSerializer setValue:@"application/json" forHTTPHeaderField:@"Accept"];

//Set auth header...
NSString *accessToken = [[[self.dailymileAuthentication oauthClient] accessToken] accessToken];
[requestSerializer setAuthorizationHeaderFieldWithToken:accessToken];

AFHTTPRequestOperationManager *requestManager = [AFHTTPRequestOperationManager manager];

[requestManager setRequestSerializer:requestSerializer];
[requestManager setResponseSerializer:[AFJSONResponseSerializer serializer]];

[requestManager GET:[profileURL description]
         parameters:nil
            success:^(AFHTTPRequestOperation *operation, id response) {
                NSLog(@"JSON: %@", response);
            }
            failure:^(AFHTTPRequestOperation *operation, NSError *error) {
                NSLog(@"Error: %@", error);
            }];

URL是：
https://api.dailymile.com/people/me.json

我如果有人有兴趣检查完整的代码库，请在公共GitHub仓库中工作（注意：您不需要 来理解问题，这只是可选的）：
< a href = https://github.com/thepost/Dailymile-iOS rel = nofollow> https://github.com/thepost/Dailymile-iOS

I'm working out of a public GitHub repo if anyone is interested in checking out the full codebase (note: you don't need to to understand the problem, this is just optional): https://github.com/thepost/Dailymile-iOS

发出经过身份验证的JSON请求需要做什么？

What do I need to do to make an authenticated JSON request?

我不知道是否正确使用了AFNetworking。老实说，AFNetworking 2尚无大量文档。

I have no idea if I'm using AFNetworking correctly or not. To be honest, there isn't a lot of documentation out there for AFNetworking 2 yet.

推荐答案

我不确定混乱即将到来；错误非常清楚：

I'm not sure what the confusion is about; the error is quite clear:


错误Domain = NSCocoaErrorDomain代码= 3840操作无法完成。（可可错误3840。）（JSON文本不是以数组或对象开头，并且没有允许设置片段的选项。）UserInfo = 0x8dc2860 {NSDebugDescription = JSON文本不是以数组或对象开头并且没有允许设置片段的选项。}


DailyMile的JSON响应无效，因为它的根值没有数组或对象。

The JSON response from DailyMile is not valid, as it doesn't have an array or object as its root value.

如果该值确实是JSON，并且应解析为JSON，则可以设置 responseSerializer readingOptions > 允许片段。

If the value is indeed JSON, and should be parsed as JSON, you can set the readingOptions of the responseSerializer to allow fragments.

但是，我怀疑您的API端点实际上不是返回JSON，而是纯文本响应，其中包含错误的 Content-Type 标头。

What I suspect, however, is that your API endpoint is not actually returning JSON, but a plain text response with the wrong Content-Type header.

这篇关于通过AFNetworking 2.0访问DailyMile API的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！