HessianCSharp 1.3.3版本前使用泛型以及接口interface继承问题解决方案!!(实例代码)

来源：互联网发布：中科大软件工程硕士编辑：程序博客网时间：2024/06/09 23:16

相比WebService，Hessian更简单、快捷。采用的是二进制RPC协议，因为采用的是二进制协议，所以它很适合于发送二进制数据。下面演示一个简单的Hessian示例程序。

知道Hessian已经远超期待！

Java、Flash、Python、C++、.NET C#、D、Erlang、PHP、Ruby，看看伟大的Hessian当前所支持的语言吧！

HessianCSharp 1.3.3版本前使用泛型以及接口interface继承问题解决方案!!(实例代码) 其他废话不说啦...

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web.config

<?xml version="1.0"?>
<configuration>
   <system.web>
       <authentication mode="Windows"/>
       <webServices>
           <protocols>
               <remove name="HttpPost"/>
               <remove name="HttpGet"/>
           </protocols>
       </webServices>
       <httpHandlers>
      <add verb="*" path="FilterService.hessian" type="App.Services.FilterService, Filter"/>
      <add verb="*" path="HttpService.hessian" type="App.Services.HttpService, Filter"/>
      <add verb="*" path="QueueService.hessian" type="App.Services.QueueService, Filter"/>
       </httpHandlers>
       <compilation debug="true">
       </compilation>
   </system.web>
   <startup><supportedRuntime version="v2.0.50727"/></startup>
   <system.codedom>
   </system.codedom>
   <system.webServer>
   </system.webServer>
</configuration>

-----------------------------------------------------------------------------

QueueService

public class QueueService : ServiceBase, IQueueService
    {
        string baseDataPath = @"d://queue//";
        public string Dequeue()
        {
            return GroupID;
        }
        public void Enqueue(string item)
        {

        }
        public void Load()
        {

        }

        public void Save()
        {

        }
       public List<string> vv()
        {
            return new List<string>();
        }

-------------------------------------------------------------------------------------------------------------------------

public class ServiceBase : CHessianHandler
    {
        string id = "default";
        string groupId = "default";
       public string ID
        {
            set { id = value; }
            get { return id; }
        }
       public string GroupID
        {
            set { groupId = value; }
            get { return groupId; }
        }
    }

-------------------------------------------------------------------------------------------------------------------------------

public interface IQueueService : IQueueService<string>
    {

    }
   public interface IQueueService<T>
   {
       string ID { set; get; }
       string GroupID { set; get; }
       string Dequeue();
       void Enqueue(T value);
       void Load();
       void Save();
       List<string> vv();
   }

------------------------------------------------------------------------------------------------------------------------

调试

class Program
    {
        static void Main(string[] args)
        {
            CHessianProxyFactory f = new CHessianProxyFactory();
            f.IsOverloadEnabled = true;//
            string url="http://localhost:3263/";
            IQueueService service = f.Create(typeof(IQueueService), url + "QueueService.hessian") as IQueueService;

            url = "http://blog.csdn.net/zfrong";
            string data = "";

            List<string> v;

             data= service.Dequeue();
            v = service.vv();//

        }

以上调试结果 data返回null;v返回null;无法调用.....

问题原因 : 接口继承的情况下,proxyType是接口的话,proxyType.GetMethods();找不到接口继承的接口方法...

IQueueService service = f.Create(typeof(IQueueService), url + "QueueService.hessian") as IQueueService;

改成

IQueueService<string> service = f.Create(typeof(IQueueService<string>), url + "QueueService.hessian") as IQueueService<string>;

以上调试结果 data返回"default";v返回 new实例;调用成功!!!!!!!!

--------------------------------------------------------------------------------------------------------

下面看如何解决....解决方案如下......修改源代码中 CHessianProxyStandardImpl类

hessiancsharp.client
/// <summary>
    /// Proxy that works with .NET - Remote proxy framework
    /// </summary>
    public class CHessianProxyStandardImpl

-------------------------

添加以下3个新方法 add new method;

/// <summary>
        /// 曾繁荣 zfrong2000@hotmail.com blog:http://blog.csdn.net/zfrong
        /// </summary>
        /// <param name="t"></param>
        /// <returns></returns>
        MethodInfo[] GetTypeMethods(Type t)
        {
            if (t.IsInterface)
            {
               System.Collections.Generic.List<MethodInfo> mColl=new System.Collections.Generic.List<MethodInfo>();
               GetInterfaceMethods(t,mColl);
               return mColl.ToArray();//
            }
            else
                return t.GetMethods();//
        }
        /// <summary>
        /// 曾繁荣 zfrong2000@hotmail.com blog:http://blog.csdn.net/zfrong
        /// </summary>
        /// <param name="type"></param>
        /// <param name="mColl"></param>
        void GetInterfaceMethods(Type type,System.Collections.Generic.List<MethodInfo> mColl)
        {
            if (type.IsInterface)
            {

               mColl.AddRange(t.GetMethods());//
                Type[] ts = type.GetInterfaces();
                foreach (Type t in ts)
                {
                    GetInterfaceMethods(t, mColl);//
                }
            }
        }

/// <summary>
        /// /// 曾繁荣 zfrong2000@hotmail.com blog:http://blog.csdn.net/zfrong
        /// </summary>
        /// <param name="methodMessage"></param>
        /// <returns></returns>
        MethodInfo GetMethodInfoFor(IMethodCallMessage methodMessage)
        {
            foreach (MethodInfo m in this.m_methods)
            {
                if (m.Name.Equals(methodMessage.MethodName))
                    return m;
            }
            return null;
        }

...以上3方法辅助接口找到所有继承的接口的接口方法c# interface

然后-------修改源代码中 ........

public CHessianProxyStandardImpl(Type proxyType,CHessianProxyFactory hessianProxyFactory, Uri uri) : base(typeof(IHessianProxyStandard))
        {
            this.m_proxyType = proxyType;
            this.m_methodCaller = new CHessianMethodCaller(hessianProxyFactory,uri);
            //this.m_methods = proxyType.GetMethods();
            this.m_methods =GetTypeMethods(proxyType) ;//zfrong

//问题原因 : 接口继承的情况下,proxyType是接口的话,proxyType.GetMethods();找不到接口继承的接口方法...

        }

        public CHessianProxyStandardImpl(Type proxyType, CHessianProxyFactory hessianProxyFactory, Uri uri, string username, string password)
            : base(typeof(IHessianProxyStandard))
        {
            this.m_proxyType = proxyType;
            this.m_methodCaller = new CHessianMethodCaller(hessianProxyFactory, uri, username, password);
            //this.m_methods = proxyType.GetMethods();
            this.m_methods = GetTypeMethods(proxyType);//zfrong
        }

private MethodInfo GetMethodInfoForMethodBase(IMethodCallMessage methodMessage)
        {
            if (IsMethodNameUnique(methodMessage.MethodName))
            {
                if(this.m_proxyType.IsInterface)
                     return GetMethodInfoFor(methodMessage);
                return this.m_proxyType.GetMethod(methodMessage.MethodName);
            }
            else
            {
                if (this.m_proxyType.IsInterface)
                    return GetMethodInfoFor(methodMessage);
                return this.m_proxyType.GetMethod(methodMessage.MethodName, CHessianMethodCaller.GetArgTypes(methodMessage.Args));
            }
        }

测试....结果....成功!!!!!如有疑问请联系我:曾繁荣 zfrong2000##hotmail.com blog:http://blog.csdn.net/zfrong