NSURLErrorDomain错误代码1002说明

问题描述

我是 iOS 开发的新手。我正在尝试加载 JSON ，这是我的函数：

I am new to iOS development. I am trying to load a JSON, here's my function:

func loadmyJSON (urlPath: String) {

    let url: NSURL = NSURL(string: urlPath)!

    let session = NSURLSession.sharedSession()

    let task = session.dataTaskWithURL(url, completionHandler: {data, response, error -> Void in
               println("Task completed")
        if(error != nil) {
            // If there is an error in the web request, print it to the console
            println("error not nil::::::")
            println(error.localizedDescription)
        }
        var err: NSError?

        var jsonResult = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.MutableContainers, error: &err) as NSDictionary
        if(err != nil) {
            // If there is an error parsing JSON, print it to the console
            println("JSON Error \(err!.localizedDescription)")
    }


        let results: NSArray = jsonResult["variants"] as NSArray
                    dispatch_async(dispatch_get_main_queue(), {

            self.jsonTable = results
            self.productView!.reloadData()
           })
     })

但我收到此错误：

error not nil::::::
The operation couldn’t be completed. (NSURLErrorDomain error -1002.)

我能够通过相同的URL在浏览器中获取JSON。
我试过阅读：
但是我无法获得描述。

I am able to get the JSON in browser through the same URL.I have tried reading THIS:but I can't get the description.

这个错误代码是什么意思？

What does this error code mean?

推荐答案

NSURLErrorDomain错误-1002 表示 NSURLErrorUnsupportedURL 或 kCFURLErrorUnsupportedURL 。它表示在大多数情况下提供了错误的URL，从URL前缀中缺少 http：// 。

NSURLErrorDomain error -1002 means NSURLErrorUnsupportedURL or kCFURLErrorUnsupportedURL. It indicates that a bad URL was provided, in most cases, missing http:// from the URL prefix.

可在此处找到所有 NSURLErrorDomain 代码的列表：

The list of all NSURLErrorDomain codes can be found here: https://developer.apple.com/documentation/foundation/1508628-url_loading_system_error_codes

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