Webservice服務中如何保持Session

問題一：webservice服務中若是保持Session

調用Session

對於Web Service，每一個方法的調用都會啓動一個Session，能夠用下面的方法來使多個調用在同一個Session裏

CWSSyscfg cwsCfg = new CWSSyscfg();

cwsCfg.CookieContainer = new System.Net.CookieContainer();

CWSSyscfg是一個Web Service類，Web Service的給代理類設置CookieContainer屬性，只要多個代理的CookieContainer屬性是相同的值，

則對這些Web Service的調用在同一個Session。能夠用單例模式來實現。

 

通常的webservice  session 是由cookie 保持的
在兩次訪問之間保持一個cookie 上下文  就能夠保持一個session
因此你須要把前一次返回的結果的http頭中 cookie 的全部內容    做爲下一次發送你request http頭的cookie內容就能夠保持session上下文了

 

參考文章：http://www.cnblogs.com/RascallySnake/archive/2010/09/10/1823036.html

              http://www.cnblogs.com/Jan_Dai/archive/2011/04/01/2001742.html

 

本人的Demo：http://files.cnblogs.com/zfanlong1314/WebService%E4%B8%ADSession%E7%9A%84%E4%BD%BF%E7%94%A8.zip

問題二：動態調用WebService時如何保持Session

參考：https://social.msdn.microsoft.com/Forums/exchange/zh-CN/7a80ebc8-1bad-412b-9cf2-498b71ae206f/webservicesession

核心代碼：

//設置CookieContainer 1987raymond添加
PropertyInfo property = t.GetProperty("CookieContainer");
property.SetValue(obj, container, null);

支持webservice服務保持session狀態的動態代理服務類。 

 public object InvokeWebservice(string url, string @namespace, string classname, string methodname, object[] args,CookieContainer container)
      {
         try
         {
            System.Net.WebClient wc = new System.Net.WebClient();

            System.IO.Stream stream = wc.OpenRead(url + "?WSDL");

            System.Web.Services.Description.ServiceDescription sd
                = System.Web.Services.Description.ServiceDescription.Read(stream);

            System.Web.Services.Description.ServiceDescriptionImporter sdi
                = new System.Web.Services.Description.ServiceDescriptionImporter();

            sdi.AddServiceDescription(sd, "", "");

            System.CodeDom.CodeNamespace cn = new System.CodeDom.CodeNamespace(@namespace);
            System.CodeDom.CodeCompileUnit ccu = new System.CodeDom.CodeCompileUnit();

            ccu.Namespaces.Add(cn);
            sdi.Import(cn, ccu);

            Microsoft.CSharp.CSharpCodeProvider csc = new Microsoft.CSharp.CSharpCodeProvider();
            System.CodeDom.Compiler.ICodeCompiler icc = csc.CreateCompiler();

            System.CodeDom.Compiler.CompilerParameters cplist
                = new System.CodeDom.Compiler.CompilerParameters();

            cplist.GenerateExecutable = false;
            cplist.GenerateInMemory = true;

            cplist.ReferencedAssemblies.Add("System.dll");
            cplist.ReferencedAssemblies.Add("System.XML.dll");
            cplist.ReferencedAssemblies.Add("System.Web.Services.dll");
            cplist.ReferencedAssemblies.Add("System.Data.dll");

            System.CodeDom.Compiler.CompilerResults cr = icc.CompileAssemblyFromDom(cplist, ccu);
            if (true == cr.Errors.HasErrors)
            {
               System.Text.StringBuilder sb = new System.Text.StringBuilder();
               foreach (System.CodeDom.Compiler.CompilerError ce in cr.Errors)
               {
                  sb.Append(ce.ToString());
                  sb.Append(System.Environment.NewLine);
               }

               throw new Exception(sb.ToString());
            }

            System.Reflection.Assembly assembly = cr.CompiledAssembly;
            Type t = assembly.GetType(@namespace + "." + classname, true, true);
            object obj = Activator.CreateInstance(t);

            //設置CookieContainer 1987raymond添加
            PropertyInfo property = t.GetProperty("CookieContainer");
            property.SetValue(obj, container, null);

            System.Reflection.MethodInfo mi = t.GetMethod(methodname);
            return mi.Invoke(obj, args);
         }

         catch (Exception ex)
         {
            throw ex;
         }
      }
   }

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