Question

这似乎是xcode登录中的常见输出，但我还没有发现任何与我正在做的事情有关的事情。我已经咨询了YouTube并在这里搜索过去几个小时，但仍然没有找到任何东西。

我试图通过我的应用在数据库中创建一个条目（有效地创建一个用户帐户）。我认为错误源于JSON转换，但我并不完全确定。

这是我的代码的样子:(这是一个嵌套的if-else链，它检查字段之间的有效性，并在点击注册按钮时处于函数中。）

let myURL = URL(string: "http://cgi.soic.indiana.edu/~team12/register.php")
var request = URLRequest(url:myURL!)
request.httpMethod = "POST"

let postString = "username=\(username)&password=\(password)"
request.httpBody = postString.data(using: String.Encoding.utf8)

let task = URLSession.shared.dataTask(with: request as URLRequest) {
    (data, response, error) in

    if error != nil {
        print("error=\(error)")
        return
    }

    var err: NSError?

    do {
        let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSDictionary


        if let parseJSON = json {
            let resultValue = parseJSON["status"] as! String
            print("result: \(resultValue)")

            var isUserRegisterd:Bool = false
            if (resultValue == "Success") {
                isUserRegisterd = true
            }

            var messageToDisplay:String = parseJSON["message"] as! String
            if (!isUserRegisterd) {
                messageToDisplay = parseJSON["message"] as! String
            }

            DispatchQueue.main.async {
                let myAlert = UIAlertController(title: "Alert", message:messageToDisplay, preferredStyle: .alert)
                let OKAction = UIAlertAction(title: "OK", style: .default) {
                    (action:UIAlertAction) in
                    self.performSegue(withIdentifier: "registerSuccess", sender: self)
                }
                myAlert.addAction(OKAction)
                self.present(myAlert, animated: true, completion: nil)
            }
        }
    } catch let error as NSError {
        err = error
    }
}

task.resume()

这是我点击注册按钮时收到的错误，或者我在最后一个字段中按Enter键：

2017-01-05 22:51:25.927582 Freely Market[17933:1522794] [MobileAssetError:29] Unable to copy asset information from https://mesu.apple.com/assets/ for asset type com.apple.MobileAsset.TextInput.SpellChecker
Alert dismissed
2017-01-05 22:51:59.766030 Freely Market[17933:1522809] [] nw_host_stats_add_src recv too small, received 24, expected 28
2017-01-05 22:51:59.769789 Freely Market[17933:1522809] [] ____nwlog_simulate_crash_inner_block_invoke dlopen CrashReporterSupport failed
2017-01-05 22:51:59.770043 Freely Market[17933:1522809] [] __nwlog_err_simulate_crash simulate crash failed "nw_socket_set_common_sockopts setsockopt SO_NOAPNFALLBK failed: [42] Protocol not available"
2017-01-05 22:51:59.770903 Freely Market[17933:1522809] [] nw_socket_set_common_sockopts setsockopt SO_NOAPNFALLBK failed: [42] Protocol not available, dumping backtrace:
        [x86_64] libnetcore-856.30.16
    0   libsystem_network.dylib             0x0000000116f58666 __nw_create_backtrace_string + 123
    1   libnetwork.dylib                    0x0000000117b24006 nw_socket_add_input_handler + 3164
    2   libnetwork.dylib                    0x0000000117b01555 nw_endpoint_flow_attach_protocols + 3768
    3   libnetwork.dylib                    0x0000000117b00572 nw_endpoint_flow_setup_socket + 563
    4   libnetwork.dylib                    0x0000000117aff298 -[NWConcrete_nw_endpoint_flow startWithHandler:] + 2612
    5   libnetwork.dylib                    0x0000000117b1aae1 nw_endpoint_handler_path_change + 1261
    6   libnetwork.dylib                    0x0000000117b1a510 nw_endpoint_handler_start + 570
    7   libnetwork.dylib                    0x0000000117b321f9 nw_endpoint_resolver_start_next_child + 2240
    8   libdispatch.dylib                   0x0000000116cd5978 _dispatch_call_block_and_release + 12
    9   libdispatch.dylib                   0x0000000116cff0cd _dispatch_client_callout + 8
    10  libdispatch.dylib                   0x0000000116cdce17 _dispatch_queue_serial_drain + 236
    11  libdispatch.dylib                   0x0000000116cddb4b _dispatch_queue_invoke + 1073
    12  libdispatch.dylib                   0x0000000116ce0385 _dispatch_root_queue_drain + 720
    13  libdispatch.dylib                   0x0000000116ce0059 _dispatch_worker_thread3 + 123
    14  libsystem_pthread.dylib             0x00000001170a84de _pthread_wqthread + 1129
    15  libsystem_pthread.dylib             0x00000001170a6341 start_wqthread + 13

任何帮助都会非常感激，因为我在这里感到茫然。我一直在查看JSON / Swift文档并查看视频/多个站点以找出问题所在，但无济于事。

干杯！

错误：nw_host_stats_add_src recv太小，收到24，预计28

0 个答案: