WebView2笔记

"date" : "2021-07-26 01:13:22"
"classfiy" : "other"
"author" : "飞扬"
"viewTimes" : 1168

[TOC]
## 过滤请求并修改请求
>- AddWebResourceRequestedFilter
- WebResourceRequested

```csharp
webView.CoreWebView2.AddWebResourceRequestedFilter("*://blog.fysmart.cn/*",CoreWebView2WebResourceContext.All);
webView.CoreWebView2.WebResourceRequested += CoreWebView2_WebResourceRequested;
private void CoreWebView2_WebResourceRequested(object sender, CoreWebView2WebResourceRequestedEventArgs e)
{
	e.Request.Headers.SetHeader("content-type", "json");
}
```
##获取请求内容
>WebResourceResponseReceived

```csharp
//获取内容的类型
e.Response.Headers.GetHeader("content-type")
```
##忽略证书验证
>使用chrome的命令行：--ignore-certificate-errors

```csharp
var options = new CoreWebView2EnvironmentOptions();
options.AdditionalBrowserArguments = "--ignore-certificate-errors";
var env = await CoreWebView2Environment.CreateAsync(options: options);
await webView.EnsureCoreWebView2Async(env);
```
##映射本地目录到虚拟网址
>SetVirtualHostNameToFolderMapping

```
webView.CoreWebView2.SetVirtualHostNameToFolderMapping("test.local", @"folder", CoreWebView2HostResourceAccessKind.Allow);
```

##调用异步JS直到函数执行完毕获取返回值
>javascript

```javascript
idents = {};
$.extend({
    setIdent: function (target, value) {
        value = value || 0;
        eval(`idents.${target}=${value}`);
    },
	getIdent: function(target){
		let re = eval(`idents.${target}`);
		if (typeof (re) === 'undefined')
		    return 404;
		return re;
	}
});

function sleep(time) {
    return new Promise((resolve) => setTimeout(resolve, time));
}

async function test(){
	$.setIdent("isok", 0);
	await sleep(3000);
	console.log('complete');
	let result = {test:'2333'};
	$.setIdent("isok", result);
	return 1;
}
```
>CSharp

```csharp
public async Task<string> _WaitJQResult(string key)
{
    await Task.Run(async () =>
    {
        string re = "";
        do
        {
            await this.Dispatcher.BeginInvoke(new Action(async () =>
            {
                re = await webView.CoreWebView2.ExecuteScriptAsync($"$.getIdent('{key}')");
            }));
            await Task.Delay(200);
        } while (re.Replace("\"", "") != "1" && re.Replace("\"", "") != "404");
		return re;
    });
}

async void GetJQueryResult(){
	await test();
	var result = await _WaitJQResult("isok");
	MessageBox.Show(result);
}
```