[英]NSURLErrorDomain with code=-1100
I was trying to download a picture to my app from 我试图将图片从下载到我的应用中
The request failed with the error NSURLErrorDomain and the code is really -1100. 请求失败,错误为NSURLErrorDomain,代码实际上为-1100。 The url should be correct since I checked it in the browser. 该网址应该正确,因为我在浏览器中检查了该网址。 Anyone knows why? 有人知道为什么吗?
let userImageURL: String! = "http://i.imgur.com/QhCzQoR.jpg";
let url = NSURL(fileURLWithPath: userImageURL);
let request:NSURLRequest = NSURLRequest(URL: url!)
NSURLConnection.sendAsynchronousRequest(request, queue: NSOperationQueue.mainQueue(), completionHandler: { (response:NSURLResponse!, imageData:NSData!, error:NSError!) -> Void in
let image = UIImage(data: imageData!);
})
The reason you are getting this problem is because you have used 您收到此问题的原因是因为您使用过
let url = NSURL(fileURLWithPath: userImageURL);
Instead you should use: 相反,您应该使用:
let url = NSURL(string: userImageUrl)
I code in Objective-C, it should be easy to convert it in Swift (small modification in fact, but the explanation is not that much related to code). 我用Objective-C编写代码,应该很容易在Swift中进行转换(实际上是很小的修改,但是解释与代码并没有太大关系)。 If you check the error complete message, you'll get: 如果检查错误完成消息,您将得到:
Error Domain=NSURLErrorDomain Code=-1100 "The requested URL was not found on this server." 错误域= NSURLErrorDomain代码= -1100“在此服务器上找不到请求的URL。” UserInfo=0x7997b7e0 {NSErrorFailingURLStringKey=file:///http:/i.imgur.com/QhCzQoR.jpg, NSErrorFailingURLKey=file:///http:/i.imgur.com/QhCzQoR.jpg, NSLocalizedDescription=The requested URL was not found on this server., NSUnderlyingError=0x799f3080 "The requested URL was not found on this server."} UserInfo = 0x7997b7e0 {NSErrorFailingURLStringKey = file:/// http:/i.imgur.com/QhCzQoR.jpg,NSErrorFailingURLKey = file:/// http:/i.imgur.com/QhCzQoR.jpg,NSLocalizedDescription =请求的URL是在此服务器上找不到。,NSUnderlyingError = 0xx7f3080“在此服务器上找不到请求的URL。”}
Clearly, if you look carefully at the URL, you have file:///http:/i.imgur.com/QhCzQoR.jpg
, which is not the URL wanted. 显然,如果您仔细查看URL,则有file:///http:/i.imgur.com/QhCzQoR.jpg
,这不是所需的URL。 If you log url.absoluteString
, you'll see it to your URL, it's you that set it like this. 如果您登录url.absoluteString
,则会在URL中看到它,是这样设置的。
Why? 为什么? Because you used fileURLWithPath:
instead of URLWithString:
. 因为您使用的是fileURLWithPath:
而不是URLWithString:
fileURLWithPath:
So change your line with: 因此,请更改您的行:
let url = NSURL(URLWithString: userImageURL);
Some discussions about the differences between theses two: What is difference between URLWithString and fileURLWithPath of NSURL? 关于这两者之间的区别的一些讨论: NSURL的URLWithString和fileURLWithPath之间有什么区别? or the doc . 或doc 。
Update: In Swift 4: 更新:在Swift 4中:
let url = URL(string: userImageURL)
We also recommend from Swift3+ to avoid NSStuff when there is Swift Equivalent: NSURL
=> URL
. 我们还建议Swift3 +在存在Swift等效项时避免使用NSStuff: NSURL
=> URL
。
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