WebService调用过程

//SSL：

//1 AccountLogin.aspx.cs 获取页面content
前端引用#region 前端引用
CustomerLogonContent content = null;
content = CustomerFacade.GetCustomerLogonContent(logonRequest, CustomerEntityCreator.Current.GetCustomerSubscriptionInfo());

//2 CustomerFacade.cs
public static CustomerLogonContent GetCustomerLogonContent
    (CustomerLogonService logonService, CustomerSubscriptionInfo subscriptionInfo)
{
    return MessageProcessor.Initiate<CustomerLogonContent>("CustomerLogon_CustomerLogon", logonService, subscriptionInfo);
}
#endregion

//CommonLibrary MessageProcessor.cs
//三步：构造消息，处理消息（调用WebService），返回消息
构造消息对象，处理序列化的消息，返回结果#region 构造消息对象，处理序列化的消息，返回结果
public static T Initiate<T>(string msgName, params object[] bizContent) where T : class
{
    return Initiate<T>(0, msgName, bizContent);
}

public static T Initiate<T>(int timeout, string msgName, params object[] bizContent) where T : class
{
    // construct message
    RequestMessage requestMsg = ConstructRequestMessage(msgName, bizContent);

    // invoke webservice
    string response = InvokeDelegateWebMethod(SerializeMessage<RequestMessage>(requestMsg), timeout);

    if (string.IsNullOrEmpty(response))
    {
        throw new Exception("MPE WebService response a null or empty value.");
    }

    // deserialize response msg
    ResponseMessage responseMsg = DeserializeMessage<ResponseMessage>(response);

    return responseMsg.BizContent as T;
}
#endregion

构造消息对象，消息体有三部分Name，ServerInfo，ProcessStep，参数信息#region 构造消息对象，消息体有三部分Name，ServerInfo，ProcessStep，参数信息

        private static RequestMessage ConstructRequestMessage(string msgName, params object[] bizContent)
        {
            RequestMessage msg = new RequestMessage();
            msg.Name = msgName;
            msg.ServerInfo = new Newegg.MPE.Common.ServerInfo();
            msg.ServerInfo.JumpedDBAlias = MPERequestContext.JumpedDBAlias;
            msg.ServerInfo.QueryDBName = ConfigurationManager.ServerConfiguration.ServerInfo.QueryDBAlias;
            msg.ServerInfo.HisQueryDBAlias = ConfigurationManager.ServerConfiguration.ServerInfo.HisQueryDBAlias;
            msg.ServerInfo.ServerID = ConfigurationManager.ServerConfiguration.ServerInfo.ServerId;
            msg.ServerInfo.IsCARequest = string.Compare(StringResource.ThreadStorage_Value_RequestHost_CA,
                                    LogicalThreadContext.GetData(StringResource.ThreadStorage_Key_RequestHost) as string) == 0;
            msg.ServerInfo.IsUSRequest = string.Compare(StringResource.ThreadStorage_Value_RequestHost_Default,
                                    LogicalThreadContext.GetData(StringResource.ThreadStorage_Key_RequestHost) as string) == 0;
            msg.ServerInfo.CurrencyExchangeRate = (decimal)LogicalThreadContext.GetData(StringResource.ThreadStorage_Key_CurrencyExchangeRate);
            msg.ServerInfo.RequestHost = LogicalThreadContext.GetData(StringResource.ThreadStorage_Key_RequestHost) as string;
            msg.ServerInfo.IsMobileDevice = (bool)LogicalThreadContext.GetData(StringResource.ThreadStorage_Key_Is_Mobile_Device);
            msg.ProcessStep = MessageProcessStep.Init;
            if (bizContent != null)
            {
                foreach (object o in bizContent)
                {
                    msg.AddBizObject(o);
                }
            }
            return msg;
        }

#endregion

处理序列化的消息对象#region 处理序列化的消息对象
        private static string InvokeDelegateWebMethod(string requestMsg, int timeout)
        {
            return WebServiceCommand.Invoke<DelegateWebService>(timeout, DelegateWebService.Method_Process, requestMsg) as string;
        }

    // 在WebServiceCommand.cs中，期间省略了异常处理代码
    public static object Invoke<T>(int timeout, string methodName, params object[] parameters) where T : SoapHttpClientProtocol
        {
            WebServiceItem webServiceItem = WebServiceManager.GetWebServiceItem(typeof(T));
           
            MethodInfo methodInfo = webServiceItem.MethodHashTable[methodName];
            ServiceItem serviceItem = ConfigurationManager.WebServiceConfiguration.GetServiceItem(webServiceItem.Alias);
           
            HostInfo hostInfo = ConfigurationManager.ServerConfiguration.HostSettings.HostInfoCollection[serviceItem.GroupName];

            SoapHttpClientProtocol webServiceInstance = webServiceItem.CreatInstance();
           
            if (hostInfo.UseProxy)
            {
                webServiceInstance.Proxy = GetWebProxy(ConfigurationManager.ServerConfiguration.HostProxy);
            }
            if (timeout <= 0)
            {
                webServiceInstance.Timeout = serviceItem.Timeout;
            }
            else
            {
                webServiceInstance.Timeout = timeout;
            }

            if (hostInfo.InvokeOrderType == InvokeOrderType.Sequence)
            {
                foreach (string host in hostInfo.Hosts)
                {
                    webServiceInstance.Url = host + serviceItem.Path;
                    try
                    {
                        return methodInfo.Invoke(webServiceInstance, parameters);
                    }
                    catch (Exception e)
                    {
                        WebServiceLogger.WriteCallWebServiceFaildLog(webServiceItem.Alias, webServiceInstance.Timeout, webServiceInstance.Url, e);
                        invokeException = e;
                    }
                }
            }
            else
            {
                List<string> hosts = new List<string>(hostInfo.Hosts);
                if (hostInfo.InvokeOrderType == InvokeOrderType.RandomOthers)
                {
                    webServiceInstance.Url = hosts[0] + serviceItem.Path;
                    try
                    {
                        return methodInfo.Invoke(webServiceInstance, parameters);
                    }
                    catch (Exception e)
                    {
                        WebServiceLogger.WriteCallWebServiceFaildLog(webServiceItem.Alias, webServiceInstance.Timeout, webServiceInstance.Url, e);
                        invokeException = e;
                    }
                }
                Random hostRandom = new Random();
                int hostIndex;
                while (hosts.Count > 0)
                {
                    hostIndex = hostRandom.Next(hosts.Count);
                    webServiceInstance.Url = hosts[hostIndex] + serviceItem.Path;
                    try
                    {
                        return methodInfo.Invoke(webServiceInstance, parameters);
                    }
                    catch (Exception e)
                    {
                        WebServiceLogger.WriteCallWebServiceFaildLog(webServiceItem.Alias, webServiceInstance.Timeout, webServiceInstance.Url, e);
                        invokeException = e;
                    }
                    hosts.RemoveAt(hostIndex);
                }
            }
            //WebServiceLogger.ExecuteWebServiceException(webServiceItem.Alias, webServiceInstance.Timeout, webServiceInstance.Url);
            throw new Exception("invoke webservcie error,", invokeException);
        }
#endregion

转载自：http://www.cnblogs.com/jqcdq8/archive/2008/11/19/1336623.html