Question

我已经在多台计算机上创建了一个服务。他们一切都很好，除了一个。当我尝试通过Windows服务启动服务时，出现以下错误：

The My.Service service on Local Computer started and then stopped. Some services stop automatically if they are not in use by other services or programs.

我已经看到其他帖子建议您更改服务的登录属性以作为本地系统帐户登录 - 我已经这样做了。

事件查看器为我提供了这些信息：

Application: myProject.exe
Framework Version: v4.0.30319
Description: The process was terminated due to an unhandled exception.
Exception Info: System.AggregateException
Stack:
   at Microsoft.AspNetCore.Server.Kestrel.KestrelServer.Start[[Microsoft.AspNetCore.Hosting.Internal.HostingApplication+Context, Microsoft.AspNetCore.Hosting, Version=1.1.1.0, Culture=neutral, PublicKeyToken=adb9793829ddae60]](Microsoft.AspNetCore.Hosting.Server.IHttpApplication`1<Context>)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.Start()
   at Microsoft.AspNetCore.Hosting.WebHostExtensions.Run(Microsoft.AspNetCore.Hosting.IWebHost, System.Threading.CancellationToken, System.String)
   at Microsoft.AspNetCore.Hosting.WebHostExtensions.Run(Microsoft.AspNetCore.Hosting.IWebHost)
   at Nexus.Startup.Main(System.String[])

我已尝试从命令提示符手动运行该服务并传入--debug并收到此错误消息：

09:05:47.289 [1] ERROR - 
System.AggregateException: One or more errors occurred. ---> System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.AspNetCore.Server.Kestrel.Internal.Http.Listener.<DisposeAsync>d__13.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Server.Kestrel.Internal.Http.ListenerPrimary.<DisposeAsync>d__20.MoveNext()
   --- End of inner exception stack trace ---
   at System.Threading.Tasks.Task.WaitAll(Task[] tasks, Int32 millisecondsTimeout, CancellationToken cancellationToken)
   at System.Threading.Tasks.Task.WaitAll(Task[] tasks, Int32 millisecondsTimeout)
   at System.Threading.Tasks.Task.WaitAll(Task[] tasks, TimeSpan timeout)
   at Microsoft.AspNetCore.Server.Kestrel.Internal.KestrelEngine.DisposeListeners(List`1 listeners)
   at Microsoft.AspNetCore.Server.Kestrel.Internal.KestrelEngine.CreateServer(ServerAddress address)
   at Microsoft.AspNetCore.Server.Kestrel.KestrelServer.Start[TContext](IHttpApplication`1 application)
   at Microsoft.AspNetCore.Hosting.Internal.WebHost.Start()
   at Microsoft.AspNetCore.Hosting.WebHostExtensions.Run(IWebHost host, CancellationToken token, String shutdownMessage)
   at Microsoft.AspNetCore.Hosting.WebHostExtensions.Run(IWebHost host)
   at MyProject.Startup.Main(String[] args) in D:\bamboo-home\xml-data\build-dir\163841\CUT-CUP-CR\repos\myProject\Startup.cs:line 42
---> (Inner Exception #0) System.NullReferenceException: Object reference not set to an instance of an object.
   at Microsoft.AspNetCore.Server.Kestrel.Internal.Http.Listener.<DisposeAsync>d__13.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Server.Kestrel.Internal.Http.ListenerPrimary.<DisposeAsync>d__20.MoveNext()<---

我很困惑，因为这项服务在其他机器上启动完全正常。

这是我的Startup.cs主要方法：

        public static void Main(string[] args)
    {
        var exePath = Process.GetCurrentProcess().MainModule.FileName;
        var directoryPath = Path.GetDirectoryName(exePath);

        if (Debugger.IsAttached || args.Contains("--debug"))
        {
            var host = new WebHostBuilder()
               .CaptureStartupErrors(true)
               .UseKestrel()
               .UseUrls("http://localhost:5000")
               .UseContentRoot(Directory.GetCurrentDirectory())
               .UseIISIntegration()
               .UseStartup<Startup>()
               .Build();
            host.Run();
        }
        else
        {
            var host = new WebHostBuilder()
                .UseKestrel()
                .UseUrls("http://localhost:5000")
                .UseContentRoot(directoryPath)
                .UseIISIntegration()
                .UseStartup<Startup>()
                .Build();
            host.RunAsService();
        }
    }

Answer 1

@ScottChamberlain是的，我通过了--debug - Roka545

你做不到。 break是阻止调用，不允许Windows服务完全启动。即使您正在调试，也需要始终从服务内部执行Run()。我通常做的模式是

RunAsSevice()

所以调试器是否附加，当您从服务中启动服务时，该服务将作为服务运行。如果你想独立运行它（比如在Visual Studio的F5中）你将if (args.Contains("--console")) { var host = new WebHostBuilder() .CaptureStartupErrors(true) .UseKestrel() .UseUrls("http://localhost:5000") .UseContentRoot(Directory.GetCurrentDirectory()) .UseIISIntegration() .UseStartup<Startup>() .Build(); host.Run(); } else { var host = new WebHostBuilder() .UseKestrel() .UseUrls("http://localhost:5000") .UseContentRoot(directoryPath) .UseIISIntegration() .UseStartup<Startup>() .Build(); host.RunAsService(); }传递给参数。

本地计算机上的服务启动然后停止

1 个答案: