swift - 尝试访问 Alamofire 中的错误代码

Question

我正在使用 Alamofire 4。当我使用时

print(response.debugDescription)

我在控制台中有这样的东西:

[Request]: https://api2.website.com
[Response]: nil
[Data]: 0 bytes
[Result]: FAILURE: Error Domain=NSURLErrorDomain Code=-1009 "The Internet connection appears to be offline." UserInfo={NSUnderlyingError=0x17444ace0 {Error Domain=kCFErrorDomainCFNetwork Code=-1009 "(null)" UserInfo={NSErrorPeerAddressKey=<CFData 0x170490e50 [0x1ab165bb8]>{length = 16, capacity = 16, bytes = 0x100201bb341d1f890000000000000000}, _kCFStreamErrorCodeKey=57, _kCFStreamErrorDomainKey=1}}, NSErrorFailingURLStringKey=https://api2.flowwow.com/api2/client/info/?auth_token=da88d8aa49ff6f8bb4e1&hash=7f38be3f68db39a6d88687505fdb9ba5&partner_id=1004, NSErrorFailingURLKey=https://api2.website.com, _kCFStreamErrorDomainKey=1, _kCFStreamErrorCodeKey=57, NSLocalizedDescription=The Internet connection appears to be offline.}
[Timeline]: Timeline: { "Request Start Time": 510763454.078, "Initial Response Time": 510763455.293, "Request Completed Time": 510763455.293, "Serialization Completed Time": 510763455.297, "Latency": 1.215 secs, "Request Duration": 1.215 secs, "Serialization Duration": 0.005 secs, "Total Duration": 1.220 secs }

有一行特别让我感兴趣:

Error Domain=NSURLErrorDomain Code=-1009

如何获得此代码，以便正确处理错误。我尝试了所有可以组成的组合，但在任何地方都找不到此代码的踪迹。

Answer 1

当您使用 Alamofire 进行调用时，它会返回一个响应，您可以在其中检查是否有任何错误。这是使用 Alamofire 调用错误处理的简单示例。

Alamofire.request("https://your.url.com").responseJSON { response in
    if (response.result.isSuccess){
        //do your json stuff
    } else if (response.result.isFailure) {
        //Manager your error
        switch (response.error!._code){
            case NSURLErrorTimedOut:
                //Manager your time out error
                break
            case NSURLErrorNotConnectedToInternet:
                //Manager your not connected to internet error
                break
            default:
                //manager your default case 
            }
    }
}

享受 :)

2020 年 4 月 1 日更新

这段代码应该适用于 Alamofire 5 版本。我还没有检查，让我知道这是否有效

AF.request(route).responseJSON { (response) in
    let result = response.result
    switch result {
    case .success(let value):
        print("Success")
        // Do something with value
    case .failure(let error):

        if let underlyingError = error.underlyingError {
            if let urlError = underlyingError as? URLError {
                switch urlError.code {
                case .timedOut:
                    print("Timed out error")
                case .notConnectedToInternet:
                    print("Not connected")
                default:
                    //Do something
                    print("Unmanaged error")
                }
            }
        }
    }
}

我希望这有效:)