CefSharp ICookieVisitor 读取Cookie的实现方法

.Net技术 码拜 4年前 (2016-01-12) 13183次浏览 0个评论

CefSharp 读取Cookie 是通过实现ICookieVisitor接口实现的,代码来自大神jankurianski

如下是 CefSharp3的 WinForms 示例,示例将等待所有Cookie收集完毕后再弹出消息框。修改一下应该就可以直接用到WPF了。:

private void ViewAllCookiesToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var visitor = new CookieMonster(all_cookies => {
                var sb = new StringBuilder();
                foreach (var nameValue in all_cookies)
                    sb.AppendLine(nameValue.Item1 + " = " + nameValue.Item2);
                BeginInvoke(new MethodInvoker(() => {
                    MessageBox.Show(sb.ToString());
                }));
            });
            Cef.VisitAllCookies(visitor);
        }

        class CookieMonster : ICookieVisitor
        {
            readonly List<Tuple<string, string>> cookies = new List<Tuple<string, string>>();
            readonly Action<IEnumerable<Tuple<string, string>>> useAllCookies;

            public CookieMonster(Action<IEnumerable<Tuple<string, string>>> useAllCookies)
            {
                this.useAllCookies = useAllCookies;
            }

            public bool Visit(Cookie cookie, int count, int total, ref bool deleteCookie)
            {
                cookies.Add(new Tuple<string, string>(cookie.Name, cookie.Value));

                if (count == total - 1)
                    useAllCookies(cookies);

                return true;
            }
        }

下面是另一个版本,不过并不是异步工作的,将会冻结主线程,直到Cookie获取完毕。:

        private void ViewAllCookiesToolStripMenuItem_Click(object sender, EventArgs e)
        {
            var visitor = new CookieMonster();
            if (Cef.VisitAllCookies(visitor))
                visitor.WaitForAllCookies();
            var sb = new StringBuilder();
            foreach (var nameValue in visitor.NamesValues)
                sb.AppendLine(nameValue.Item1 + " = " + nameValue.Item2);
            MessageBox.Show(sb.ToString());
        }

        class CookieMonster : ICookieVisitor
        {
            readonly List<Tuple<string, string>> cookies = new List<Tuple<string, string>>();
            readonly ManualResetEvent gotAllCookies = new ManualResetEvent(false);

            public bool Visit(Cookie cookie, int count, int total, ref bool deleteCookie)
            {
                cookies.Add(new Tuple<string, string>(cookie.Name, cookie.Value));

                if (count == total - 1)
                    gotAllCookies.Set();

                return true;
            }

            public void WaitForAllCookies()
            {
                gotAllCookies.WaitOne();
            }

            public IEnumerable<Tuple<string, string>> NamesValues
            {
                get { return cookies; }
            }
        }
通过以上方式就可以读取到Cef的Cookie

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