Swift打开带参数的本地HTML文件

webView.loadRequest(NSURLRequest(URL: NSBundle.mainBundle().URLForResource("apprules", withExtension: "html")!))

我想将本地传递给HTNL,如apprules.html？lang = ja.有没有办法在Swift中这样做？

let url1 = Bundle.main.url(forResource: "apprules", withExtension: "html")!
let url2 = URL(string: "?lang=ja", relativeTo: url1)!
webView.loadRequest(NSURLRequest(url: url2))

斯威夫特2及以下：

let url1 = NSBundle.mainBundle().URLForResource("apprules", withExtension: "html")!
let url2 = NSURL(string: "?lang=ja", relativeToURL: url1)!
webView.loadRequest(NSURLRequest(URL: url2))