Swift如何检查Web服务器上是否存在文件（.plist）

Question

我有.plist文件，它位于两个不同的Web服务器上（冗余）。我已经完成了目标c，但我怎么能在swift中做到这一点？提前谢谢。

// Web Server 1或Web Server 2    - （BOOL）MyserverPL  {     NSMutableURLRequest * request = [NSMutableURLRequest requestWithURL：[NSURL URLWithString：@＆＃34; http://www.myserver1.com＆＃34;]]; [请求setHTTPMethod：@＆＃34; HEAD＆＃34;]; NSHTTPURLResponse *响应; [NSURLConnection sendSynchronousRequest：request returningResponse：＆amp; response error：NULL]; return（[response statusCode] == 200）？是：否;

}

    if([self MyserverPL] == YES)
    {
        data = [[NSMutableArray alloc]initWithContentsOfURL:[NSURL URLWithString:@"http://www.myserver1.com/playlists/my.plist"]];          
        //  NSLog(@“Web Server 1 up and running");
    }
    else
    {
        //  NSLog(@“Web Server 1 isn’t up and running so go to the Web Server 2");
        data = [[NSMutableArray alloc]initWithContentsOfURL:[NSURL URLWithString:@"http://www.myserver2.com/playlists/my.plist"]];
    }

}