在Silverlight开发基于http协议客户端连接器(三)

 

下面应用前面设计的这个连接器演练一个登录服务并保持session。

先定消息，就是用LoginMessage好了。

这里说明一下，很多页面访问的时候都是需要验证的，比如qq、178的游戏页面都会包含appid，sessionkey，uid之类的信息，这样就能够防止非注册用户访问他们的webgame。所以我们还要收集html中的这些数据用于登录用。在silverlight中可以通过HTML Bridge来获取DOM，其实用起来也很简单，在js中写function，再在sl中调用HtmlPage.Window.Invoke(方法名，参数名……)。

下面是获取某页面验证信息用的的工具类：

 

 

public static class PageMessageUtil 
   { 
       public static PageSignEntity GetData() 
       { 
           if ((string)HtmlPage.Window.Invoke("get178PageData", "178_sig_uid") != "") 
           { 
               var entity = new PageSignEntity(); 
               entity.Id = (string)HtmlPage.Window.Invoke("get178PageData", "178_sig_uid"); 
               entity.Signtime = (string)HtmlPage.Window.Invoke("get178PageData", "178_sig_time"); 
               entity.Appid = (string)HtmlPage.Window.Invoke("get178PageData", "178_sig_appId"); 
               entity.Appversion = (string)HtmlPage.Window.Invoke("get178PageData", "178_sig_v"); 
               entity.Isaddapp = (string)HtmlPage.Window.Invoke("get178PageData", "178_sig_added"); 
               entity.Sessionkey = (string)HtmlPage.Window.Invoke("get178PageData", "178_sig_sessionId"); 
               entity.Friendlist = (string)HtmlPage.Window.Invoke("get178PageData", "178_sig_friends"); 
               entity.Signsumber = (string)HtmlPage.Window.Invoke("get178PageData", "178_sig_key"); 
               return entity; 
           } 
           else 
           { 
               MessageBox.Show("没有给定参数"); 
               System.Diagnostics.Debug.WriteLine("没有给定参数"); 
               return null; 
           } 
       } 
   }

 

 

public class PageSignEntity 
    { 
        public PageSignEntity() 
        { 
        } 
        public string Id { get; set; } 
        public string Signtime { get; set; } 
        public string Appid { get; set; } 
        public string Appversion { get; set; } 
        public string Isaddapp { get; set; } 
        public string Sessionkey { get; set; } 
        private string friendList; 
        public string Friendlist 
        { 
            get { return friendList; } 
            set 
            { 
                friendList = value ?? string.Empty; 
            } 
        } 
        public string Signsumber { get; set; } 
    }

 

继承Message，设置有效的url参数

 

public class LoginMessage : Message 
    { 
        public  readonly static string Uid = "178_sig_uid"; 
        public readonly static string Signtime = "178_sig_time"; 
        public readonly static string Appid = "178_sig_appId"; 
        public readonly static string Appversion = "178_sig_v"; 
        public readonly static string Isaddapp = "178_sig_added"; 
        public readonly static string Sessionkey = "178_sig_sessionId"; 
        public readonly static string Friendlist = "178_sig_friends"; 
        public readonly static string Signsumber = "178_sig_key"; 
        public LoginMessage() 
        { 
            init(); 
        } 
        public LoginMessage(PageSignEntity dataEntity) 
        { 
            init(); 
            base.Parameters[LoginMessage.Uid] = dataEntity.Id; 
            base.Parameters[LoginMessage.Appid] = dataEntity.Appid; 
            base.Parameters[LoginMessage.Appversion] = dataEntity.Appversion; 
            base.Parameters[LoginMessage.Signtime] = dataEntity.Signtime; 
            base.Parameters[LoginMessage.Signsumber] = dataEntity.Signsumber; 
            base.Parameters[LoginMessage.Sessionkey] = dataEntity.Sessionkey; 
            base.Parameters[LoginMessage.Isaddapp] = dataEntity.Isaddapp; 
            base.Parameters[LoginMessage.Friendlist] = dataEntity.Friendlist; 
        } 
        private void init() 
        { 
            base.MessageId = "10000"; 
            //可以用反射少些代码，或用code generater的方式 
            base.AvaliableParameterNames.Add(Uid); 
            base.AvaliableParameterNames.Add(Signtime); 
            base.AvaliableParameterNames.Add(Appid); 
            base.AvaliableParameterNames.Add(Appversion); 
            base.AvaliableParameterNames.Add(Isaddapp); 
            base.AvaliableParameterNames.Add(Sessionkey); 
            base.AvaliableParameterNames.Add(Friendlist); 
            base.AvaliableParameterNames.Add(Signsumber); 
        } 
    }

 

我们从WebConnectorContext继承来一个LkDemoDomainService。

 

public class LkDemoDomainService : WebConnectorContext 
    { 
        public LkDemoDomainService(string baseAddress) 
            : base(baseAddress) 
        { 

        } 
        public void LoginGameFromPageSign() 
        { 
            LoginGameFromPageSign("http://localhost:8085/igscdemo/login.sa%22); 
        } 
        public void LoginGameFromPageSign(string loginUrl) 
        { 

            var msg = new LoginMessage(PageMessageUtil.GetData()); 
            var loginService = new LkDemoDomainService(loginUrl); 
        } 

        public  void Login(Message msg, Action<WebClientWrapper, string> action) 
        { 
           loginService.AddMessageToSend(msg, (client, s) => 
            {

                //解析返回的结果，略 
                base.AppCookie = loginService.AppCookie;//保存用户sessionid等

               //提示登录结果，略 
            });

        }

        public override void AddMessageToSend(Message msg, Action<WebClientWrapper, string> action) 
        { 
            base.AddMessageToSend(msg, action); 
        } 
    }

 

之后我们假如有LichKingGameDomainService继承于WebConnectorContext，只需将登录的AppCookie设置给LichKingGameDomainService对象即可使LichKingGameDomainService对象发送出去的消息含有用户的sessionid等cookie值。