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自己做的公司网站百度搜不到,专业网站建设商家,长沙专业做网站的公司,西宁休闲娱乐场所一#xff1a;背景 1. 讲故事 微信好友里有位朋友找到我#xff0c;说他部署在windows上的程序#xff0c;用debug模式正常#xff0c;但用 release 模式跑程序就崩溃#xff0c;如果把程序切到 .NET6 的话又都正常#xff0c;所以很迷茫#xff0c;让我看看怎么回事背景1. 讲故事微信好友里有位朋友找到我说他部署在windows上的程序用debug模式正常但用 release 模式跑程序就崩溃如果把程序切到 .NET6 的话又都正常所以很迷茫让我看看怎么回事哈哈这种问题直接抓dump分析就好了。二崩溃分析1. 为什么会崩溃分析过崩溃程序的朋友应该知道不管是托管还是非托管崩溃先用 !analyze -v 命令开路简化输出如下0:000 !analyze -v******************************************************************************** ** Exception Analysis ** ********************************************************************************CONTEXT: (.ecxr)rax0000000000000004 rbx000001e34b283ec0 rcx0000000000000228rdx0000000000000000 rsi000001e34ac2f4e0 rdi000001e34ab58e70rip00007ff95ac53659 rsp0000007735d7e1c0 rbp0000007735d7e1e0r80000000000000000 r9000001e3464ba1c0 r100000000000000228r110000000000000228 r120000000000000000 r13000001e34880eae8r14000001e34ab58e70 r150000000000000008iopl0 nv up di pl nz na pe nccs0000 ss0000 ds0000 es0000 fs0000 gs0000 efl00000000System_Private_CoreLib!System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw0x39:00007ff95ac53659 cc int 3Resetting default scopeEXCEPTION_RECORD: (.exr -1)ExceptionAddress: 00007ff95ac53659 (System_Private_CoreLib!System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw0x0000000000000039)ExceptionCode: e0434f4d (CLR exception)ExceptionFlags: 00000000NumberParameters: 0...从卦中的 ExceptionCode: e0434f4d (CLR exception) 来看这是一个经典的托管异常既然是托管异常这个问题就比较简单了使用 !t 找下到底是哪一个托管线程抛的输出如下0:000 !tThreadCount: 15UnstartedThread: 0BackgroundThread: 11PendingThread: 0DeadThread: 3Hosted Runtime: noLockDBG ID OSID ThreadOBJ State GC Mode GC Alloc Context Domain Count Apt Exception0 1 81d8 000001E3464BA1C0 a6028 Preemptive 000001E34ABA2340:000001E34ABA3D30 000001e347fc40b0 -00001 STA Prism.Ioc.ContainerResolutionException 000001e34a9866086 2 448c 000001E34803A440 2b228 Preemptive 000001E34A876980:000001E34A8784B0 000001e347fc40b0 -00001 MTA (Finalizer)...从卦中的 Prism.Ioc.ContainerResolutionException 来看貌似是和 Prism 有关接下来可以用 !pe 命令观察调用栈详情。0:000 !peException object: 000001e34a986608Exception type: Prism.Ioc.ContainerResolutionExceptionMessage: An unexpected error occurred while resolving xxx.Views.LoginWindowInnerException: Unity.ResolutionFailedException, Use !PrintException 000001E34A986228 to see more.StackTrace (generated):SP IP Function0000007735D668E0 00007FF95A64DEC8 Prism_Unity_Wpf!Prism.Unity.UnityContainerExtension.Resolve(System.Type, System.ValueTuple2System.Type,System.Object[])0x2a80000007735D7DC60 00007FF95A64DBFD Prism_Unity_Wpf!Prism.Unity.UnityContainerExtension.Resolve(System.Type)0x3d0000007735D7DCA0 00007FF95A64DB88 Prism!Prism.Ioc.IContainerProviderExtensions.Resolve[[System.__Canon, System.Private.CoreLib]](Prism.Ioc.IContainerProvider)0x480000007735D7DCF0 00007FF95A956742 xxx!xxx.App.InitializeShell(System.Windows.Window)0x420000007735D7DD40 00007FF959B21148 Prism_Wpf!Prism.PrismApplicationBase.Initialize()0x2080000007735D7DDA0 00007FF959B20F17 xxx!xxx.App.n__0()0x17....从卦象来看这不是最原始的异常言外之意就是下面还有子异常也只有找到最里层的异常才能发现灾难的祸根经过一层层的下钻最后找到了最原始的异常参考如下0:000 !PrintException /d 000001E34A97E940Exception object: 000001e34a97e940Exception type: System.PlatformNotSupportedExceptionMessage: System.IO.Ports is currently only supported on Windows.InnerException: noneStackTrace (generated):SP IP Function0000007735D7B580 00007FF95A9588E7 System_IO_Ports!System.IO.Ports.SerialPort.GetPortNames()0x470000007735D7B5C0 00007FF95A958859 xxx!xxx.ViewModels.LoginWindowViewModel.RefreshComs()0x190000007735D7B600 00007FF95A957FBC xxx!xxx.ViewModels.LoginWindowViewModel..ctor()0x14c0000007735D7B9D0 0000000000000000 System_Private_CoreLib!System.RuntimeMethodHandle.InvokeMethod(System.Object, Void**, System.Signature, Boolean)0x46a770b00000007735D7B9D0 00007FF9B8C03106 System_Private_CoreLib!System.Reflection.MethodBaseInvoker.InvokeWithNoArgs(System.Object, System.Reflection.BindingFlags)0x36StackTraceString: noneHResult: 80131539从卦中来看是 GetPortNames() 方法抛出来的平台不支持异常这就很迷惑了。2. 为什么会平台不支持了解 PlatformNotSupportedException 异常只能寻找相关的源代码了通过dnspy截图如下从卦中来看这是一个空方法接下来拿这个异常在网上找下资料看样子是这位朋友需要升级或者降级 system.io.ports 的版本截图如下完整链接https://learn.microsoft.com/en-us/answers/questions/1621393/system-io-ports-only-availble-on-windows-but-im-us本来是很兴奋的以为是类似多线程操控非 volatile 变量导致的debug和release行为不一致呢结果是这玩意害三总结本次故障相对比较简单对我们这些老手来说简直是 11但我们何尝不是从新手练过来的所以本篇是初学者很好的一个练手素材。