简单的登录

Question

我有这样一个WCF服务：

[ServiceContract(SessionMode=SessionMode.Required)] 
public interface IService 
{ 
    [OperationContract(IsInitiating = true, IsTerminating = false)] 
    void login(string id); 

    [OperationContract(IsInitiating = false, IsTerminating = false)] 
    string getdata(); 
} 



public class Service : IService 
{ 
    public void login(string hashedid) 
    { 
     if (username != "someusername" || password != "somepassword") 
     { 
      // can not get data 
     } 
     else 
     { 
      // can get data 
     } 
    } 

    public string getdata() 
    { 
     return "these are data"; 
    } 
} 

如何我写的方法登录并创建客户端应用程序？ 谢谢。

Answer 1

[ServiceContract(SessionMode=SessionMode.Required)] 
public interface IService 
{ 
    [OperationContract(IsInitiating = true, IsTerminating = false)] 
    void login(string username, string password); 

    [OperationContract(IsInitiating = false, IsTerminating = false)] 
    string getdata(); 
} 



public class Service : IService 
{ 
// todo: make threadsafe! 
    public static List<Guid> authenticated = new List<Guid>(); 

    public void login(string username, string password) 
    { 

     if (username == "correctUsername" || password == "correctPassword") 
     { 
      // user has given correct username/pasword 
      Guid currentSessionId = OperationContext.Current.SessionId; 

     // note: can throw Exception when calling login twice or more, check if item exists first 
      authenticated.Add(currentSessionId); 
     } 


    } 

    public string getdata() 
    { 
     Guid currentSessionId = OperationContext.Current.SessionId; 
     if (List.Contains(currentSessionId) 
     { 
       return "these are data"; 
     } 

     return String.Empty; 
    } 
} 

您可以通过当前会话标识来识别会话。在用户验证正确后，您可以将此会话添加到已验证会话的列表中。

注意：这只是一些伪代码。当会话被关闭时，会话ID应该被删除，我使用的列表不是线程安全的，但我希望这可以帮助你进入正确的方向。