如何解决错误:" JSON写入中的无效类型(NSConcreteData)"

时间:2016-02-27 10:17:49

标签: json swift in-app-purchase swift2

我尝试编写一些代码来验证iOS应用上的订阅。我遵循本教程:http://savvyapps.com/blog/how-setup-test-auto-renewable-subscription-ios-app/

它不在Swift 2.0中,所以我不得不转换一些代码,但我遇到了这条代码的问题:

let requestData = try! NSJSONSerialization.dataWithJSONObject(receiptDictionary, options: NSJSONWritingOptions.PrettyPrinted) as NSData!

当它到达该行时,它会输出以下错误消息:

  

由于未捕获的异常而终止应用   ' NSInvalidArgumentException',原因:' JSON写入中的无效类型   (NSConcreteData)'

以下是整个功能:

func validateReceipt() {
    print("Validating")

    if let receiptPath = NSBundle.mainBundle().appStoreReceiptURL?.path where NSFileManager.defaultManager().fileExistsAtPath(receiptPath) {
        print("Loading Validation")
        let receiptData = NSData(contentsOfURL:NSBundle.mainBundle().appStoreReceiptURL!)
        print(receiptData)
        let receiptDictionary = ["receipt-data" :
            receiptData!.base64EncodedDataWithOptions([]), "password" : "placeholder"]
        let requestData = try! NSJSONSerialization.dataWithJSONObject(receiptDictionary, options: NSJSONWritingOptions.PrettyPrinted) as NSData!

        let storeURL = NSURL(string: "https://sandbox.itunes.apple.com/verifyReceipt")!
        let storeRequest = NSMutableURLRequest(URL: storeURL)
        storeRequest.HTTPMethod = "POST"
        storeRequest.HTTPBody = requestData

        let session = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration())

        session.dataTaskWithRequest(storeRequest, completionHandler: { (data, response, connection) -> Void in

            if let jsonResponse: NSDictionary = try! NSJSONSerialization.JSONObjectWithData(data!, options:NSJSONReadingOptions.MutableContainers) as?
                NSDictionary, let expirationDate: NSDate = self.formatExpirationDateFromResponse(jsonResponse) {
                    print(expirationDate)
                    //self.updateIAPExpirationDate(expirationDate)
            }
        })
    }
}

之前我没有完成应用内购买,所以我对此有点新鲜。在此先感谢您的帮助!

1 个答案:

答案 0 :(得分:3)

错误消息明确指出字典中的一个值是JSON不支持的NSData对象。

这似乎是代码完成问题

替换

  

base64Encoded 数据 WithOptions([])

  

base64Encoded的字符串 WithOptions([])

也在链接文章中写道。

两个旁注:

    无论如何,
  • dataWithJSONObject返回NSData,类型转换是无用的,永远不会是隐式解包的可选项。
  • 服务器当然不关心漂亮的JSON。