C#实现12306自动登录的方法

依然使用IE9的捕获参数，做了一个12306的登录功能。参照了网上童鞋们的做法。
其他都和前面几篇读取余票、票价一样，不过登录要用到证书的问题，这个参考了一个网上的例子。
不过12306会随时变化，下面的登录不一定一直都能成功。如果12306有变化，大家可以根据变化对代码做修改。总之使用的方法不变，就是捕获参数和url，然后自己补充参数。
效果如下：

项目名称：Test12306AutoLogin；
环境：.net 4.0，Visual studio 2010；
项目图：

核心代码如下，
信任证书代码：

public class Messenger
{
public Messenger()
{
}

public void Register(string message, Action callback)
{
this.Register(message, callback, null);
}

public void Register<T>(string message, Action<T> callback)
{
this.Register(message, callback, typeof(T));
}

void Register(string message, Delegate callback, Type parameterType)
{
if (String.IsNullOrEmpty(message))
throw new ArgumentException("'message' cannot be null or empty.");

if (callback == null)
throw new ArgumentNullException("callback");

this.VerifyParameterType(message, parameterType);

_messageToActionsMap.AddAction(message, callback.Target, callback.Method, parameterType);
}

[Conditional("DEBUG")]
void VerifyParameterType(string message, Type parameterType)
{
Type previouslyRegisteredParameterType = null;
if (_messageToActionsMap.TryGetParameterType(message, out previouslyRegisteredParameterType))
{
if (previouslyRegisteredParameterType != null && parameterType != null)
{
if (!previouslyRegisteredParameterType.Equals(parameterType))
throw new InvalidOperationException(string.Format(
"The registered action's parameter type is inconsistent with the previously registered actions for message '{0}'.\nExpected: {1}\nAdding: {2}",
message,
previouslyRegisteredParameterType.FullName,
parameterType.FullName));
}
else
{
// One, or both, of previouslyRegisteredParameterType or callbackParameterType are null.
if (previouslyRegisteredParameterType != parameterType)  // not both null?
{
throw new TargetParameterCountException(string.Format(
"The registered action has a number of parameters inconsistent with the previously registered actions for message \"{0}\".\nExpected: {1}\nAdding: {2}",
message,
previouslyRegisteredParameterType == null ? 0 : 1,
parameterType == null ? 0 : 1));
}
}
}
}

public void NotifyColleagues(string message, object parameter)
{
if (String.IsNullOrEmpty(message))
throw new ArgumentException("'message' cannot be null or empty.");

Type registeredParameterType;
if (_messageToActionsMap.TryGetParameterType(message, out registeredParameterType))
{
if (registeredParameterType == null)
throw new TargetParameterCountException(string.Format("Cannot pass a parameter with message '{0}'. Registered action(s) expect no parameter.", message));
}

var actions = _messageToActionsMap.GetActions(message);
if (actions != null)
actions.ForEach(action => action.DynamicInvoke(parameter));
}

public void NotifyColleagues(string message)
{
if (String.IsNullOrEmpty(message))
throw new ArgumentException("'message' cannot be null or empty.");

Type registeredParameterType;
if (_messageToActionsMap.TryGetParameterType(message, out registeredParameterType))
{
if (registeredParameterType != null)
throw new TargetParameterCountException(string.Format("Must pass a parameter of type {0} with this message. Registered action(s) expect it.", registeredParameterType.FullName));
}

var actions = _messageToActionsMap.GetActions(message);
if (actions != null)
actions.ForEach(action => action.DynamicInvoke());
}

private class MessageToActionsMap
{
internal MessageToActionsMap()
{
}

internal void AddAction(string message, object target, MethodInfo method, Type actionType)
{
if (message == null)
throw new ArgumentNullException("message");

if (method == null)
throw new ArgumentNullException("method");

lock (_map)
{
if (!_map.ContainsKey(message))
_map[message] = new List<WeakAction>();

_map[message].Add(new WeakAction(target, method, actionType));
}
}

internal List<Delegate> GetActions(string message)
{
if (message == null)
throw new ArgumentNullException("message");

List<Delegate> actions;
lock (_map)
{
if (!_map.ContainsKey(message))
return null;

List<WeakAction> weakActions = _map[message];
actions = new List<Delegate>(weakActions.Count);
for (int i = weakActions.Count - 1; i > -1; --i)
{
WeakAction weakAction = weakActions[i];
if (weakAction == null)
continue;

Delegate action = weakAction.CreateAction();
if (action != null)
{
actions.Add(action);
}
else
{
// The target object is dead, so get rid of the weak action.
weakActions.Remove(weakAction);
}
}

// Delete the list from the map if it is now empty.
if (weakActions.Count == 0)
_map.Remove(message);
}

// Reverse the list to ensure the callbacks are invoked in the order they were registered.
actions.Reverse();

return actions;
}

internal bool TryGetParameterType(string message, out Type parameterType)
{
if (message == null)
throw new ArgumentNullException("message");

parameterType = null;
List<WeakAction> weakActions;
lock (_map)
{
if (!_map.TryGetValue(message, out weakActions) || weakActions.Count == 0)
return false;
}
parameterType = weakActions[0].ParameterType;
return true;
}

readonly Dictionary<string, List<WeakAction>> _map = new Dictionary<string, List<WeakAction>>();
}

private class WeakAction
{

internal WeakAction(object target, MethodInfo method, Type parameterType)
{
if (target == null)
{
_targetRef = null;
}
else
{
_targetRef = new WeakReference(target);
}

_method = method;

this.ParameterType = parameterType;

if (parameterType == null)
{
_delegateType = typeof(Action);
}
else
{
_delegateType = typeof(Action<>).MakeGenericType(parameterType);
}
}

internal Delegate CreateAction()
{
// Rehydrate into a real Action object, so that the method can be invoked.
if (_targetRef == null)
{
return Delegate.CreateDelegate(_delegateType, _method);
}
else
{
try
{
object target = _targetRef.Target;
if (target != null)
return Delegate.CreateDelegate(_delegateType, target, _method);
}
catch
{
}
}

return null;
}

internal readonly Type ParameterType;
readonly Type _delegateType;
readonly MethodInfo _method;
readonly WeakReference _targetRef;
}

readonly MessageToActionsMap _messageToActionsMap = new MessageToActionsMap();
}

登录的所有方法类：

public class Login12306Manager
{
private static readonly Messenger s_messenger = new Messenger();

public static Messenger SMessenger { get { return s_messenger; } }

public const string APPEND_MESSAGE = "append_message";

public static string afterLoginCookie;

private static string beforLoginCookie;

static Login12306Manager()
{
SetCertificatePolicy();
}

/// <summary>
/// 登 录
/// </summary>
public static string Login(string userName,string password, string randomCode)
{
string resultHtml = string.Empty;

try
{
string loginRand= DoGetLoginRand();

HttpWebRequest request = (HttpWebRequest)WebRequest.Create
(@"https://dynamic.12306.cn/otsweb/loginAction.do?method=login");

request.Accept = @"text/html, application/xhtml+xml, */*";

request.UserAgent = @"Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";

request.Referer = @"https://dynamic.12306.cn/otsweb/loginAction.do?method=init";

request.ContentType = @"application/x-www-form-urlencoded";

request.Headers[HttpRequestHeader.Cookie] = beforLoginCookie;

request.Method = "POST";

byte[] buffer = new byte[0];
string parameter =
@"loginRand={0}&refundLogin=N&refundFlag=Y&isClick=&form_tk=null&loginUser.user_name={1}&nameErrorFocus=&user.password={2}&passwordErrorFocus=&randCode={3}&randErrorFocus=&NDU0NzY4NA%3D%3D=Nzg4ZDAxMGNkYTZlMTRjZA%3D%3D&myversion=undefined";

parameter = string.Format(parameter, loginRand, userName, password, randomCode);

buffer = Encoding.UTF8.GetBytes(parameter);

request.ContentLength = buffer.Length;
using (Stream writer = request.GetRequestStream())
{
writer.Write(buffer, 0, buffer.Length);

writer.Flush();
}

using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
afterLoginCookie = response.GetResponseHeader("Set-cookie");

using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{
resultHtml = reader.ReadToEnd();

resultHtml = ProcessLoginResult(resultHtml);
}
}
}
catch{ }

return resultHtml;
}

/// <summary>
/// 刷新验证码
/// </summary>
public static string RefreshCode()
{
string randImageUrl = string.Empty;

try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(string.Format(@"https://dynamic.12306.cn/otsweb/passCodeNewAction.do?module=login&rand=sjrand&{0}",

new Random().Next(10000, 1000000)));

request.Accept = @"image/png, image/svg+xml, image/*;q=0.8, */*;q=0.5";

request.UserAgent = @"Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";

request.Referer = @"https://dynamic.12306.cn/otsweb/loginAction.do?method=init";

request.Method = "GET";

using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
beforLoginCookie = response.GetResponseHeader("Set-cookie");

beforLoginCookie = Regex.Replace(beforLoginCookie, "path(?:[^,]+),?", "", RegexOptions.IgnoreCase);

using (Stream reader = response.GetResponseStream())
{
string path = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, new Random().Next(10000, 99999) + @"loginRandCode.JPEG");

using (FileStream file = new FileStream(path, FileMode.OpenOrCreate, FileAccess.Write))
{
reader.CopyTo(file);
}

randImageUrl = path;
}
}
}
catch { }

return randImageUrl;
}

private static string DoGetLoginRand()
{
string loginRand=string.Empty;

try
{
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(@"https://dynamic.12306.cn/otsweb/loginAction.do?method=loginAysnSuggest");

request.Accept = @"application/json, text/javascript, */*";

request.UserAgent = @"Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)";

request.Referer = @"https://dynamic.12306.cn/otsweb/loginAction.do?method=init";

request.Headers[HttpRequestHeader.Cookie] = beforLoginCookie;

request.Method = "POST";

byte[] buffer = new byte[0];

buffer = Encoding.UTF8.GetBytes(string.Empty);

request.ContentLength = buffer.Length;

using (Stream writer = request.GetRequestStream())
{
writer.Write(buffer, 0, buffer.Length);

writer.Flush();
}

using (HttpWebResponse response = (HttpWebResponse)request.GetResponse())
{
using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8))
{
string result = reader.ReadToEnd();

var loginRandContent = JsonConvert.DeserializeObject<BeforLoginRnad>(result);

loginRand = loginRandContent.loginRand;
}
}
}
catch {}

return loginRand;
}
/// <summary>
/// 处理登录结果
/// </summary>
/// <param name="html">登录后返回的html文本</param>
private static string ProcessLoginResult(string html)
{
string m_msgPattern = "message[^\"]+\"(?'message'[^\"]+)\";";

string m_isLoginPatter = "isLogin\\s*=\\s*(?<val>.+)\n";

string m_loginUserNamePattern = "u_name\\s*=\\s*['\"](?<name>.+)['\"]";

if (html.Contains("请输入正确的验证码"))
{
return "验证码错误";
}
else if (html.Contains("当前访问用户过多"))
{
return "当前访问用户过多,请稍后再试...";
}
else
{
var match0 = Regex.Match(html, m_msgPattern, RegexOptions.Compiled);

if (match0.Success)
{
string text = match0.Groups["message"].Value;

if (text.Contains("密码") || text.Contains("登录名不存在"))
{
return "用户名或者密码错误";
}
else
{
return text;
}
}

var match = Regex.Match(html, m_isLoginPatter, RegexOptions.Compiled);

if (match.Success && (match.Groups["val"].Value.Trim().ToLower() == "true"))
{
match = Regex.Match(html, m_loginUserNamePattern, RegexOptions.Compiled);
if (match.Success)
{
string name = match.Groups["name"].Value;

return "登录成功:" + name;
}
else
{
return "登录失败,未知错误";
}
}
else
{
return "登录失败!!!";
}
}
}

/// <summary>
/// Sets the cert policy.
/// </summary>
private static void SetCertificatePolicy()
{
ServicePointManager.ServerCertificateValidationCallback
+= RemoteCertificateValidate;
}

/// <summary>
/// Remotes the certificate validate.
/// </summary>
private static bool RemoteCertificateValidate(
object sender, X509Certificate cert,
X509Chain chain, SslPolicyErrors error)
{
SMessenger.NotifyColleagues(APPEND_MESSAGE, "信任任何证书...");
return true;
}
}

public class BeforLoginRnad
{
public string loginRand { get; set; }

public string randError { get; set; }
}

注意登录时，主要的正文是：

               string parameter =
@"loginRand={0}&refundLogin=N&refundFlag=Y&isClick=&form_tk=null&loginUser.user_name={1}&nameErrorFocus=&user.password={2}&passwordErrorFocus=&randCode={3}&randErrorFocus=&NDU0NzY4NA%3D%3D=Nzg4ZDAxMGNkYTZlMTRjZA%3D%3D&myversion=undefined"，它有三个参数，登录时的随机码，用户名，密码和验证码组成。

调用如下：

前台wpf代码：

<Window x:Class="Test12306AutoLogin.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow">
<StackPanel>
<Grid>
<Grid.Resources>
<Style TargetType="TextBlock">
<Setter Property="FontFamily" Value="Microsoft YaHei"/>
<Setter Property="FontSize" Value="20"/>
<Setter Property="VerticalAlignment" Value="Center"/>
</Style>

<Style TargetType="TextBox">
<Setter Property="FontSize" Value="20"/>
<Setter Property="MinWidth" Value="300"/>
<Setter Property="Height" Value="50"/>
<Setter Property="VerticalAlignment" Value="Center"/>
</Style>

<Style TargetType="PasswordBox">
<Setter Property="FontSize" Value="20"/>
<Setter Property="MinWidth" Value="300"/>
<Setter Property="Height" Value="50"/>
<Setter Property="VerticalAlignment" Value="Center"/>
</Style>
</Grid.Resources>
<Grid.RowDefinitions>
<RowDefinition Height="auto"/>
<RowDefinition Height="auto"/>
<RowDefinition Height="auto"/>
<RowDefinition Height="auto"/>
</Grid.RowDefinitions>

<Grid.ColumnDefinitions>
<ColumnDefinition Width="auto"/>
<ColumnDefinition Width="auto"/>
</Grid.ColumnDefinitions>

<TextBlock Grid.Row="0" Grid.Column="0" Text="用户名："/>
<TextBox Grid.Row="0" Grid.Column="1" x:Name="txtUserName"/>

<TextBlock Grid.Row="1" Grid.Column="0" Text="密 码："/>
<PasswordBox Grid.Row="1" Grid.Column="1" x:Name="txtPassword"/>

<TextBlock Grid.Row="3" Grid.Column="0" Text="验证码"/>
<StackPanel Grid.Row="3" Grid.Column="1" Orientation="Horizontal"
VerticalAlignment="Center">
<TextBox x:Name="txtRandCode" Width="150"/>
<Image x:Name="imageRandCode" Width="70"/>
<Button Content="刷新验证码" Height="30" Width="80" Click="ButtonRefreshRandCode_Click" />
</StackPanel>
</Grid>

<Button Content="登 录" Width="150" Height="50" Click="ButtonLogin_Click" />

<RichTextBox x:Name="rtxResultContent" MinHeight="200"/>

</StackPanel>
</Window>

后台代码：

public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();

this.Loaded += new RoutedEventHandler(MainWindow_Loaded);
}

void MainWindow_Loaded(object sender, RoutedEventArgs e)
{
DoRefreshRandCode();
}

private void DoRefreshRandCode()
{
string imageRandUrl = Login12306Manager.RefreshCode();

if (File.Exists(imageRandUrl))
{
ImageSource src = (ImageSource)(new ImageSourceConverter().ConvertFromString(imageRandUrl));

this.imageRandCode.Source = src;
}

this.txtRandCode.Text = string.Empty;
}

/// <summary>
/// 登录
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ButtonLogin_Click(object sender, RoutedEventArgs e)
{
string userName = this.txtUserName.Text;

string password = this.txtPassword.Password;

string randCode = this.txtRandCode.Text;

if (string.IsNullOrEmpty(userName) || string.IsNullOrEmpty(password) || string.IsNullOrEmpty(randCode))
{
MessageBox.Show("请填写完整信息");

return;
}

string html = Login12306Manager.Login(userName, password, randCode);

System.Windows.Documents.FlowDocument doc = this.rtxResultContent.Document;

doc.Blocks.Clear();

this.rtxResultContent.AppendText(html);
}

/// <summary>
/// 刷新验证码
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void ButtonRefreshRandCode_Click(object sender, RoutedEventArgs e)
{
DoRefreshRandCode();
}
}

以上就是本文的全部内容，希望对大家的学习有所帮助。

您可能感兴趣的文章:

• div弹出层的ajax登录(Jquery版+c#)
• asp.net c#采集需要登录页面的实现原理及代码
• c#调用存储过程实现登录界面详解
• c#通过进程调用cmd判断登录用户权限代码分享
• C# Winform中实现主窗口打开登录窗口关闭的方法
• C#可用于登录验证码的四位随机数生成方法
• C#.NET实现网页自动登录的方法
• C#实现简单的登录界面