在Swift中使用NSURL读取文本文件 [英] Read a text file with NSURL in Swift

问题描述

我想阅读并显示位于URL的文本文件的内容. 我正在为优胜美地编写Mac App，我需要使用Swift，但是我坚持了这一点.

I want to read and display the content of a text file that is located at an URL. I am coding a Mac App for Yosemite and I need to use Swift but I stuck on this.

这是我的代码:

let messageURL = NSURL(string: "http://localhost:8888/text.txt")
let sharedSession = NSURLSession.sharedSession()
let downloadTask: NSURLSessionDownloadTask = sharedSession.downloadTaskWithURL(messageURL!, completionHandler: { (location: NSURL!, response: NSURLResponse!, error: NSError!) -> Void in

        var urlContents = NSString(contentsOfURL: location, encoding: NSUTF8StringEncoding, error: nil)

        println((urlContents))


    })

我尝试使用NSString.stringWithContentsOfURL进行此操作，但似乎在OS X 10.10上已弃用.

I tried to do it with NSString.stringWithContentsOfURL but it seems to be deprecated on OS X 10.10.

位于服务器上的文本文件只有一行(UTF8).

The text file located at on the server has only one line (UTF8).

有任何线索吗?谢谢

推荐答案

您打电话给downloadTask.resume()吗?

let messageURL = NSURL(string: "http://localhost:8888/text.txt")
let sharedSession = NSURLSession.sharedSession()
let downloadTask: NSURLSessionDownloadTask = sharedSession.downloadTaskWithURL(messageURL!,
        completionHandler: { 
          (location: NSURL!, response: NSURLResponse!, error: NSError!) -> Void in

             var urlContents = NSString(contentsOfURL: location, encoding: NSUTF8StringEncoding, error: nil)

             println(urlContents)

    })
downloadTask.resume() // Call it and you should be able to see the text.txt content

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