iOS：保存然后从Swift

Question

enter image description here我想将这个webview网页保存在文档目录中，我这样做了：

        let documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
    let text = UserDefaults.standard.string(forKey: "path")
    let dataPath = documentsDirectory.appendingPathComponent("\(text!)/\(pageTitle).html")
    print("path is:\(dataPath)")
    do
        {
            let url: NSURL = NSURL(string: textfield_url.text!)!
            let urlData: NSData = try NSData(contentsOf: url as URL)
            urlData.write(toFile: dataPath.path, atomically: true)

        } catch let error as NSError {
        print("Ooops! Something went wrong: \(error)")
    }

textfield包含当前页面网址。 现在我想从文档目录加载这个网页，问题是我的页面没有加载完全丢失的图像。 对于加载代码是：

    let documentsDirectory = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first!
    let dataPath = documentsDirectory.appendingPathComponent(pageName)
    print("path is:\(dataPath)")
    let url = URL.init(fileURLWithPath: dataPath.path);

    let requestObj = URLRequest.init(url: url)

    webView.loadRequest(requestObj)

加载后我得到这个： enter image description here