如何在 WPF WebView2 中禁用 CORS

Question

我正在开发一个使用 .Net5/WPF.
显示 WebView2 的应用程序我想禁用 CORS。
我已经安装了 Chromium Edge Canary 86.0.607.0.
在 Edge 中，可以通过向快捷方式添加以下参数来禁用 CORS。

--disable-web-security --user-data-dir="C://Chrome dev session"

我也想禁用 WebView2。

Answer 1

我在这个论坛上得到了答案。对不起，这个网站是日文的。
https://social.msdn.microsoft.com/Forums/ja-JP/9bac6d51-94eb-42c8-96f0-4081e9a4056d/wpf-webview2-cors-?forum=wpfja

它适用于下面的代码。
*需要在WebView2.Source中指定URL之前设置。
注意不要在 Xaml 端指定来源。

    /// <summary>
    /// WPF Window Constructor
    /// </summary>
    /// <param name="url">URL</param>
    public WebViewWindow(string url)
    {
        InitializeComponent();
        // async start
        Loaded += async (_, __) => await _Routine(url);
    }

    /// <summary>
    /// task
    /// </summary>
    /// <param name="url">URL</param>
    /// <returns>task</returns>
    async Task _Routine(string url)
    {
        var localPath = Environment.GetEnvironmentVariable("LocalAppData");
        var webviewPath = $@"{localPath}\Microsoft\Edge SxS\Application.0.608.0";
        var userPath = "C://Chrome dev session";
        
        // Argument setting to disable COAR
        var op = new CoreWebView2EnvironmentOptions("--disable-web-security");
        
        var env = await CoreWebView2Environment.CreateAsync(webviewPath, userPath, op);
        
        await webView.EnsureCoreWebView2Async(env);
        
        if (Uri.TryCreate(url, UriKind.RelativeOrAbsolute, out Uri? result))
        {
            webView.Source = result;
        }
    }

Answer 2

对于 WPF，在构造函数中调用以下代码

 async void InitializeAsync()
        {
            var op = new CoreWebView2EnvironmentOptions("--disable-web-security");
            var env = await CoreWebView2Environment.CreateAsync(null, null, op);
            await webView.EnsureCoreWebView2Async(env);
        }

Answer 3

另一种选择是创建虚拟主机。有关详细信息，请参阅 CoreWebView2.SetVirtualHostNameToFolderMapping:

Sets a mapping between a virtual host name and a folder path to make available to web sites via that host name.

示例：

public class VirtualHost
{
    private WebView2 webView;
    private string hostName;
    private string directory;

    public VirtualHost(WebView2 webView, string hostName, string directory)
    {
        this.webView = webView;
        this.hostName = hostName;
        this.directory = directory;
        _ = InitializeAsync();
    }

    async private Task InitializeAsync()
    {
        // Wait for CoreWebView2 initialization.
        // Explicitly triggers initialization of the control's CoreWebView2.
        await webView.EnsureCoreWebView2Async();

        // Set a mapping between a virtual host name and a folder path
        // to make available to web sites via that host name.
        webView.CoreWebView2.SetVirtualHostNameToFolderMapping(
            hostName, directory, CoreWebView2HostResourceAccessKind.DenyCors);

        webView.Source = new Uri($"https://{hostName}/index.html");
    }
}

var localPath = Environment.GetEnvironmentVariable("LocalAppData");
virtualHost = new VirtualHost(view.configuratorWebView, "mylocalhost", localPath);

如何在 WPF WebView2 中禁用 CORS

How to disable CORS in WPF WebView2

c#

wpf

.net-core

.net-5

webview2