webview2 多层嵌套执行js
整体逻辑
首先在需要用webview的地方初始化InitializeWebView
int nlength=2;
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private Microsoft.Web.WebView2.WinForms.WebView2 webView21;
qflagurl = true;
qflag = false;
urlSet.Clear();
listBox1.Items.Clear();
string url = txtwanneng.Text.ToString().Trim();
Sharing.setlinks(url);
InitializeWebView();
Uri uri;
if (Uri.TryCreate(url, UriKind.Absolute, out uri))
{
webView21.Source = uri;
Sharing.setTips("web通道适配中30s未响应 则匹配失败......");
}
else
{
MessageBox.Show("链接输入有误,无法解析");
}
InitializeWebView()代码如下:
private async void InitializeWebView()
{
webView21 = new WebView2();
webViewList.Add(webView21);
webView21.CoreWebView2InitializationCompleted += WebView_CoreWebView2InitializationCompleted;
await webView21.EnsureCoreWebView2Async();
}
初始化母体webview21 并且绑定事件WebView_CoreWebView2InitializationCompleted
private void WebView_CoreWebView2InitializationCompleted(object sender, EventArgs e)
{
if (webView21.CoreWebView2 != null)
{
// 添加 NavigationStarting 事件处理程序
webView21.CoreWebView2.NavigationStarting += CoreWebView2_NavigationStarting;
// 订阅请求拦截事件
webView21.CoreWebView2.AddWebResourceRequestedFilter("*", CoreWebView2WebResourceContext.All);
webView21.CoreWebView2.WebResourceRequested += CoreWebView2_WebResourceRequested;
}
}
CoreWebView2_NavigationStarting代码如下：
private void CoreWebView2_NavigationStarting(object sender, CoreWebView2NavigationStartingEventArgs e)
{
// 在此处拦截请求并处理
string url = e.Uri;
Console.WriteLine($"Navigating to: {url}");
}
CoreWebView2_WebResourceRequested代码如下：
private async void CoreWebView2_WebResourceRequested(object sender, CoreWebView2WebResourceRequestedEventArgs e)
{
//e.Request.Headers.SetHeader("Referer", "https://www.nanhuyt.com/v/135-1-1.html");
// 获取请求
var request = e.Request;
var url = request.Uri; var tet = "";
if (url != txtwanneng.Text.ToString().Trim())
{
if (url != null && (url.EndsWith(".m3u8") || url.Contains(".m3u8")) && qflagurl == true)
{
Match match = Regex.Match(url, @"http((?!http).)*m3u8", RegexOptions.Singleline);
if (match.Success)
{
url = match.Value;
}
urlSet.Add(url);
UpdateListBox();
lock (queueLock)
{
requestQueue.Enqueue(url);
}
// 开始处理队列
ProcessQueue();
}
else if ((url.EndsWith("mp4") || url.EndsWith(".mp4")) && qflagurl == true)
{
Match match = Regex.Match(url, @"http((?!http).)*\.mp4", RegexOptions.Singleline);
if (match.Success)
{
url = match.Value;
}
urlSet.Add(url);
UpdateListBox();
//issuccessqiantaom3u8 = true;
//qflag = false;
lock (queueLock)
{
requestQueue.Enqueue(url);
}
// 开始处理队列
ProcessQueue();
}
else if ((url.Contains("mp4")) && qflagurl == true) {
urlSet.Add(url);
UpdateListBox();
//issuccessqiantaom3u8 = true;
//qflag = false;
lock (queueLock)
{
requestQueue.Enqueue(url);
}
// 开始处理队列
ProcessQueue();
}
else if (url == "http://127.0.0.1/")
{
MessageBox.Show("触发回环地址，此网站无法抓取噢");
}
else
{
}
}
if (urlSet.Count == 0|| !issuccessqiantaom3u8)
{
List<string> iframeSources = await GetAllIFrameSourcesAsync();
// 使用逗号分隔连接所有的 src 字符串 // 将连接后的字符串再次拆分成数组
string joinedSources = string.Join(",", iframeSources);
string[] sourcesArray = joinedSources.Split(',');
if (sourcesArray.Length > 1 && qflag == false|| sourcesArray.Length > nlength)//在这调控空的iframe
{
nlength = sourcesArray.Length;
qflag = true;//会一直抓 解决办法1, 多抓两次,2 抓到了才结束 3等待完成
foreach (var src in sourcesArray)
{
Console.WriteLine($"IFrame source: {src}");
var needurl = src;
Match match = Regex.Match(src, @"http[^""]*", RegexOptions.Singleline);
if (match.Success)
{
needurl = match.Value;
}
//不是本域名的嵌套应该都进去拦截看看 不管有几个链接,加载都应该单开一个重新加载
if (needurl != null && (needurl != txtwanneng.Text.ToString().Trim()) )//在这调控不是m3u8或者mp4的iframe 获取嵌套带url的
{
tet = "嵌套加载获取中....\n";
Sharing.setTips(tet);
Widget.Ssp.Invoke(Form1.PSetTxt, new object[]
{
1,
"嵌套加载获取中...."
});
urlSet.Clear();
var newWebView = new WebView2();
webViewList.Add(newWebView);
newWebView.CoreWebView2InitializationCompleted += NewWebView_CoreWebView2InitializationCompleted;
await newWebView.EnsureCoreWebView2Async();
// 将字符串 URL 转换为 Uri 对象
Uri quri;
if (Uri.TryCreate(needurl, UriKind.Absolute, out quri))
{
newWebView.Source = quri;
}
else
{
Console.WriteLine(needurl);
MessageBox.Show("嵌套iframe链接出错,无法抓取");
}
}
// 这里可以进一步处理每个 iframe 的 src 属性，例如显示到界面上或者进行其他操作
}
}
}
//iframelist获取
}
GetAllIFrameSourcesAsync代码如下：
private async Task<List<string>> GetAllIFrameSourcesAsync()
{
List<string> iframeSources = new List<string>();
try
{
string script = @"
var iframes = document.getElementsByTagName('iframe');
var sources = [];
for (var i = 0; i < iframes.length; i++) {
sources.push(iframes[i].src);
}
sources;
";
var result = await webView21.ExecuteScriptAsync(script);
if (result != null)
{
iframeSources.Add(result);
}
}
catch (Exception ex)
{
Console.WriteLine($"Error getting iframe sources: {ex.Message}");
}
return iframeSources;
}
通过绑定请求拦截事件，拦截我们需要的url
我在这里执行js代码的时候 List
但是在后面我获取到需要的url的时候new了一个新的webview
var newWebView = new WebView2(); webViewList.Add(newWebView); newWebView.CoreWebView2InitializationCompleted += NewWebView_CoreWebView2InitializationCompleted; await newWebView.EnsureCoreWebView2Async(); 并且绑定了这个事件
现在修改成需要GetAllIFrameSourcesAsync中用new的webview执行js
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List<string> iframeSources = await GetAllIFrameSourcesAsync(webViewList[0]);应该是这样传入进去啊，但是在 var newWebView = new WebView2();
webViewList.Add(newWebView);有可能每次都会新添加 怎么修改webViewList[0]每次都是传入新添加的微博view
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