CefSharp在NuGet的简介是“The CefSharp Chromium-based browser component”,机翻的意思就是“基于Cefsharp Chromium的浏览器组件”
请注意本文不会有太多功能的详细介绍,只有实现相关需求的基本功能
请注意本次使用CefSharp版本为57.0.0,最新版本可能相关用法已经不适用
播放视频需安装相关Flash软件才能播放
本次编写要实现的主要功能是
1:播放视频,
(本次打开指定网址默认会播放视频)
2:自动跳转下一条视频,
(学习进度100%时跳转下一个网址)
3:自动点击验证
(执行JavaScript代码)
成品软件界面如下
一:添加相关引用,NuGet 搜索安装 CefSharp.WinForms,CefSharp.Common(本次使用版本为57.0.0)
二:项目属性中平台要进行设置
三:编写代码
具体实现方式是,有两个窗口,一个浏览学习列表页(获取内页学习页面链接),另一个浏览内页学习页面进行学习
CefSharp.WinForms.ChromiumWebBrowser browser = null;
CefSharp.WinForms.ChromiumWebBrowser browserChild = null;
public Form1() { InitializeComponent(); //必须进行初始化,否则出不来页面啦。 CefSharp.Cef.Initialize(); //实例化控件 即课程列表页查看和获取具体学习页面路径 browser = new CefSharp.WinForms.ChromiumWebBrowser("http://xxx.xxx.cn"); //设置停靠方式 browser.Dock = DockStyle.Fill; //加入到当前窗体中 this.tabControl1.TabPages[0].Controls.Add(browser); //绑定新窗口打开事件 browser.LifeSpanHandler = new NewWindowCreatedEventHandler(); //browser.LoadHandler = new NewLoadHandler(); //browser.FrameLoadEnd += Browser_FrameLoadEnd; //实例化子控件 即学习页面 browserChild = new CefSharp.WinForms.ChromiumWebBrowser("about:blank"); //设置停靠方式 browserChild.Dock = DockStyle.Fill; //加入到当前窗体中 this.tabControl1.TabPages[1].Controls.Add(browserChild); Control.CheckForIllegalCrossThreadCalls = false;//防止出现 线程间操作无效: }
/// <summary> /// 打开新窗口事件处理(在当前浏览器窗口打开) /// </summary> internal class NewWindowCreatedEventHandler : ILifeSpanHandler { public bool DoClose(IWebBrowser browserControl, IBrowser browser) { return false; } public void OnAfterCreated(IWebBrowser browserControl, IBrowser browser) { } public void OnBeforeClose(IWebBrowser browserControl, IBrowser browser) { } public bool OnBeforePopup(IWebBrowser browserControl, IBrowser browser, IFrame frame, string targetUrl, string targetFrameName, WindowOpenDisposition targetDisposition, bool userGesture, IPopupFeatures popupFeatures, IWindowInfo windowInfo, IBrowserSettings browserSettings, ref bool noJavascriptAccess, out IWebBrowser newBrowser) { newBrowser = null; var chromiumWebBrowser = (ChromiumWebBrowser)browserControl; chromiumWebBrowser.Load(targetUrl); return true; //Return true to cancel the popup creation copyright by codebye.com. } }
执行JavaScript代码方法
string BrowserEvaluateScriptAsync(string scriptStr) { StringBuilder sb = new StringBuilder(); sb.AppendLine("function tempFunction() {"); sb.AppendLine(scriptStr); sb.AppendLine("}"); sb.AppendLine("tempFunction();"); string resultStr = ""; try { var task = browser.GetBrowser().GetFrame(browser.GetBrowser().GetFrameNames()[0]).EvaluateScriptAsync(sb.ToString()); task.ContinueWith(t => { if (!t.IsFaulted) { var response = t.Result; if (response.Success == true) { if (response.Result != null) { resultStr = response.Result.ToString(); } } } }, TaskScheduler.FromCurrentSynchronizationContext()); return resultStr; } catch (Exception ex) { return resultStr; } }
获取内页学习页面链接代码,实现方式是获取页面的html然后用正则表达式去匹配当前页的链接
//获取课程列表 private void GetDataList_Click(object sender, EventArgs e) { Log("获取课程列表"); if (browser != null) { try { StringBuilder sb = new StringBuilder(); sb.AppendLine("function tempFunction() {"); sb.AppendLine(" return document.body.innerHTML; "); sb.AppendLine("}"); sb.AppendLine("tempFunction();"); var task = browser.GetBrowser().GetFrame(browser.GetBrowser().GetFrameNames()[0]).EvaluateScriptAsync(sb.ToString()); task.ContinueWith(t => { if (!t.IsFaulted) { var response = t.Result; if (response.Success == true) { if (response.Result != null) { string resultStr = response.Result.ToString(); Regex r = new Regex("(/knowledge/document/[\\S]*.html)|(/knowledge/video/[\\S]*.html)|(/package/video/[\\S]*.html)|(/package/document/[\\S]*.html)|(/knowledge/scorm/[\\S]*.html)|(/package/scorm/[\\S]*.html)|(/package/ebook/[\\S]*.html)");//构造表达式package/scorm MatchCollection matches = r.Matches(resultStr); foreach (Match match in matches) { string word = match.Groups["word"].Value; int index = match.Index; richTextBox1.AppendText(match.Value.Replace("\"", "")); richTextBox1.AppendText("\r\n"); } SetConfig(LastHistroyDataList, richTextBox1.Text); Log("获取课程列表成功!(添加" + matches.Count.ToString() + "列数据)"); tabControl1.SelectedIndex = 2; } } } }, TaskScheduler.FromCurrentSynchronizationContext()); } catch (Exception ex) { Log("获取课程列表失败!(js执行失败)"); } } else { Log("获取课程列表失败!(浏览器获取失败)"); } }
接下来定时判断具体学习页面是否到达100%的进度,如果达到100%的进度,浏览下一个链接即可
//判断页面是否显示 “已经完成学习” string PanDuanWanCheng() { if (browserChild != null) { try { StringBuilder sb = new StringBuilder(); sb.AppendLine("function tempFunction() {"); sb.AppendLine("return document.getElementById(‘ScheduleText‘).innerText;"); sb.AppendLine("}"); sb.AppendLine("tempFunction();"); string resultStr = ""; var task = browserChild.GetBrowser().GetFrame(browserChild.GetBrowser().GetFrameNames()[0]).EvaluateScriptAsync(sb.ToString()); task.ContinueWith(t => { if (!t.IsFaulted) { var response = t.Result; if (response.Success == true) { if (response.Result != null) { resultStr = response.Result.ToString(); if (resultStr == "100%") { string nowLearnTitle = GetNowLearnTitle(); //Log("课程已完成!" + browserChild.Url.ToString() + "(" + nowLearnTitle + ")"); //完成操作 if (learnWithDataList) { BroserChildStarWithDataList(); } return "1"; } } } } return "0"; }, TaskScheduler.FromCurrentSynchronizationContext()); } catch (Exception ex) { } } return "0"; }
原文地址:https://www.cnblogs.com/leiyongbo/p/10387182.html
时间: 2024-10-10 02:53:46