如何在 NSURL 中使用特殊字符? [英] How to use special character in NSURL?

问题描述

我的应用程序正在使用这样的 NSURL:

My application is using an NSURL like this:

var url = NSURL(string: "http://www.geonames.org/search.html?q=Aïn+Béïda+Algeria&country=")

当我尝试做一个从这个 NSURL 获取数据的任务时:

When I tried to make a task for getting data from this NSURL like this:

    let task = NSURLSession.sharedSession().dataTaskWithURL(url!, completionHandler: { (data: NSData!, response: NSURLResponse!, error: NSError!) -> Void in

        if error == nil {

            var urlContent = NSString(data: data, encoding: NSUTF8StringEncoding)
            println("urlContent \(urlContent!)")
        } else {

            println("error mode")
        }

但是当我尝试从该地址获取数据时出错，尽管当我使用 safari 时转到链接:"http://www.geonames.org/search.html?q=Aïn+Béïda+Algeria&country="我可以看到数据.我该如何解决?

but I got error when trying to got data from that address, although when I using safari go to link: "http://www.geonames.org/search.html?q=Aïn+Béïda+Algeria&country=" I can see the data. How can I fix that?

推荐答案

Swift 2

let original = "http://www.geonames.org/search.html?q=Aïn+Béïda+Algeria&country="
if let encodedString = original.stringByAddingPercentEncodingWithAllowedCharacters(
    NSCharacterSet.URLFragmentAllowedCharacterSet()),
    url = NSURL(string: encodedString) 
{
    print(url)
}

编码的 URL 现在是:

Encoded URL is now:

"http:///www.geonames.org/search.html?q=A%C3%AFn+B%C3%A9%C3%AFda+Algeria&country="

并且与 NSURLSession 兼容.

Swift 3

let original = "http://www.geonames.org/search.html?q=Aïn+Béïda+Algeria&country="
if let encoded = original.addingPercentEncoding(withAllowedCharacters: .urlFragmentAllowed),
    let url = URL(string: encoded)
{
    print(url)
}

这篇关于如何在 NSURL 中使用特殊字符?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！