- A+
所属分类：.NET技术
背景
在1688官网里面有很多信息是需要登录才能看得到的，比如商家的联系电话等等。那么我们在抓取它的网页的时候，肯定是需要维持登录状态才能得到对应的内容。这里面就会涉及到自动登录的问题。
登录地址
https://login.1688.com/member/signin.htm
自动登录方法
1、找到对应的元素，账号、密码框。
2、把账号、密码值带进去。
List<string> logininfolist = new List<string>(); string file = "1688Account.json"; if (!File.Exists(file)) { throw new ArgumentException("1688Account not found"); } string data = File.ReadAllText(file, Encoding.UTF8); var account1688list = JsonConvert.DeserializeObject<List<Account1688Item>>(data); logininfolist.AddRange(account1688list.Select(o => o.AccountPassword).ToList()); Random rdinfo = new Random(); int indexinfo = rdinfo.Next(logininfolist.Count); var modelinfo = logininfolist[indexinfo]; driver.FindElement(By.Id("fm-login-id")).SendKeys(modelinfo.Split('+')[0]); driver.FindElement(By.Id("fm-login-password")).SendKeys(modelinfo.Split('+')[1]);3、模拟点击提交按钮操作。
// Thread.Sleep(1000 * 30); //30时间操作 driver.FindElement(By.ClassName("password-login")).Click(); Thread.Sleep(1000 * 30);//30时间操作4、进入控制台，验证是否登陆成功。并记录Cookies，下次再来的时候，直接使用现成的Cookies，一般有效期可以维持一天多左右。
driver.Navigate().GoToUrl("https://work.1688.com/?tracelog=login_target_is_blank_1688"); Thread.Sleep(1000 * 5); if (driver.Url.Contains("login.1688.com")) { Console.WriteLine("登录失败"); CookieHelp.DeleteCookies(); Console.WriteLine("2"); throw new Exception("重新登录"); } driver.Navigate().Refresh(); CookieHelp.WriteCookies(driver.Manage().Cookies.AllCookies);5、判断是否有现成的登录cookies。
driver.Navigate().GoToUrl("https://www.1688.com/"); driver.Manage().Cookies.DeleteAllCookies(); var listCookie = CookieHelp.GetCookie(); if (listCookie != null) { logintry = 0; Console.WriteLine("有现成cookies" + DateTime.UtcNow); foreach (var item in listCookie) { driver.Manage().Cookies.AddCookie(new Cookie(item.Name, item.Value, item.Domain, item.Path, item.Expiry)); } Thread.Sleep(2000); driver.Navigate().GoToUrl("https://work.1688.com/?tracelog=login_target_is_blank_1688"); Thread.Sleep(1000 * 2);完整代码
/// <summary> /// 登录 todo /// </summary> /// <param name="_reptilesImageSearchService"></param> /// <param name="options"></param> /// <param name="driver"></param> public void Implement(IReptilesImageSearchService _reptilesImageSearchService, IWebDriver driver) { driver.Navigate().GoToUrl("https://www.1688.com/"); driver.Manage().Cookies.DeleteAllCookies(); var listCookie = CookieHelp.GetCookie(); if (listCookie != null) { logintry = 0; Console.WriteLine("有现成cookies" + DateTime.UtcNow); foreach (var item in listCookie) { driver.Manage().Cookies.AddCookie(new Cookie(item.Name, item.Value, item.Domain, item.Path, item.Expiry)); } Thread.Sleep(2000); driver.Navigate().GoToUrl("https://work.1688.com/?tracelog=login_target_is_blank_1688"); Thread.Sleep(1000 * 2); if (driver.Url.Contains("login.1688.com")) { Console.WriteLine("cookies过期了"); CookieHelp.DeleteCookies(); Console.WriteLine("1"); throw new Exception("重新登录"); } } else { if (logintry > 4) { Console.WriteLine("登陆次数超出：" + logintry); throw new Exception("登陆次数超出,退出"); } logintry++; Console.WriteLine("无现成cookies" + DateTime.UtcNow); driver.Navigate().GoToUrl("https://login.1688.com/member/signin.htm"); #region 登录动作 driver.SwitchTo().Frame(0); IJavaScriptExecutor js = (IJavaScriptExecutor)driver; // string returnjs = (string)js.ExecuteScript("Object.defineProperties(navigator, {webdriver:{get:()=>undefined}});"); string jsfile = File.ReadAllText("stealth.min.js", Encoding.UTF8); string returnjs = (string)js.ExecuteScript(jsfile); List<string> logininfolist = new List<string>(); string file = "1688Account.json"; if (!File.Exists(file)) { throw new ArgumentException("1688Account not found"); } string data = File.ReadAllText(file, Encoding.UTF8); var account1688list = JsonConvert.DeserializeObject<List<Account1688Item>>(data); logininfolist.AddRange(account1688list.Select(o => o.AccountPassword).ToList()); Random rdinfo = new Random(); int indexinfo = rdinfo.Next(logininfolist.Count); var modelinfo = logininfolist[indexinfo]; driver.FindElement(By.Id("fm-login-id")).SendKeys(modelinfo.Split('+')[0]); driver.FindElement(By.Id("fm-login-password")).SendKeys(modelinfo.Split('+')[1]); // Thread.Sleep(1000 * 30); //30时间操作 driver.FindElement(By.ClassName("password-login")).Click(); Thread.Sleep(1000 * 30);//30时间操作 #endregion 登录动作 driver.Navigate().GoToUrl("https://work.1688.com/?tracelog=login_target_is_blank_1688"); Thread.Sleep(1000 * 5); if (driver.Url.Contains("login.1688.com")) { Console.WriteLine("登录失败"); CookieHelp.DeleteCookies(); Console.WriteLine("2"); throw new Exception("重新登录"); } driver.Navigate().Refresh(); CookieHelp.WriteCookies(driver.Manage().Cookies.AllCookies); } Thread.Sleep(1000); } 注意事项
1、登录的时候，有时候会出现滑块验证码，这时候一般是使用其他账号重试或者是在当前的机器手工登录一次，后面基本就会被信任。
2、使用这段代码本身就是模拟真实用户的行为，最大限度的减少验证码出现的几率。
IJavaScriptExecutor js = (IJavaScriptExecutor)driver; // string returnjs = (string)js.ExecuteScript("Object.defineProperties(navigator, {webdriver:{get:()=>undefined}});"); string jsfile = File.ReadAllText("stealth.min.js", Encoding.UTF8); string returnjs = (string)js.ExecuteScript(jsfile);
