WCF InstanceContextMode.PerSession [英] WCF InstanceContextMode.PerSession

问题描述

如果我使用这个:InstanceContextMode.PerSession，那么对于每个客户端，我都会初始化我的服务一次.我说得对吗?

if I use this: InstanceContextMode.PerSession, then for every client I initialize my service one time. Am I right?

如果我调用具有 [OperationBehavior(TransactionScopeRequired = true)] 的方法，则会调用 JobImplement 构造函数.为什么?

我的服务:

[ServiceBehavior(InstanceContextMode = InstanceContextMode.PerSession)]
    public class JobImplement : IJob
    {
        public static int Sum = 0;
        public JobImplement()
        {
            Sum++;
        }
        [OperationBehavior(TransactionScopeRequired = true)]
        public void UselessMethod1()
        {
        }
        [OperationBehavior(TransactionScopeRequired = true)]
        public void AddEmployee(string Name, string Age)
        {
        }
        public int GetSum()
        {
            return Sum;
        }
    }

编辑 1:

我使用 WSHttpBinding 绑定，这是我唯一的客户端代码.

Im using WSHttpBinding binding and here is my only client code.

我的客户:

static void Main(string[] args)
        {
            ServiceReference1.IJob Service1 = new ServiceReference1.JobClient();
            Service1.UselessMethod1();//sum become [1]
            Service1.AddEmployee("","");//sum become [2]
            Console.WriteLine(Service1.GetSum());//show [2].
            Console.WriteLine(Service1.GetSum());//show [2].
            Console.WriteLine(Service1.GetSum());//show [2].
        }

推荐答案

此处编写的服务使用 ServiceBehavior.ReleaseServiceInstanceOnTransactionComplete 属性的默认值，即 true.

The service as written here uses the default value of the ServiceBehavior.ReleaseServiceInstanceOnTransactionComplete attribute, which is true.

这意味着通过 TransactionScopeRequired 强制执行事务范围的方法将导致服务实例被释放，并且下次调用方法时，尽管您需要InstanceContextMode.

This means that the methods enforcing transaction scope via TransactionScopeRequired will cause the service instance to be released and the next time a method is invoked, a new instance gets created despite your desired InstanceContextMode.

将相关属性更改为 false 应该可以解决问题.

Changing the relevant attribute to false should solve the problem.

这篇关于WCF InstanceContextMode.PerSession的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！