一、背景 3 j, ]5 K- h$ B& c' O- A! o+ ?
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。
0 P3 m f) x& u; T: R# T 登录地址:https://login.1688.com/member/signin.htm , k" @7 d: [. I$ k1 U& G
2 |' P) s" b- ] 二、自动登录方法
1 J: r4 B0 r @4 U4 U 1、找到对应的元素,账号、密码框。+ o! |3 L6 {5 ~
1 o: h& ~! C- N: B
2、把账号、密码值带进去。" B3 a5 h3 N+ i9 Z& e' U
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。
, @9 Z9 }: b( u$ K // 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。
: E" @+ {+ {" t# d 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。
3 B4 W N! [6 v 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);
三、完整代码
* P( N2 W' B# z3 P/ Y5 M% ?# j /// <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);
}
四、注意事项
S% N. x( j, b' X/ f9 r 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。* V8 T: u$ z; _5 m1 C, ]
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。' j0 y0 X/ N9 x% n1 G; o: `
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);