在 Azure Functions 中启用异常

Question

我正在尝试调试我的 Azure Function App，但我得到的只是 "An error has occurred"，这让解决我的问题变得极其困难。知道如何让应用程序返回完整的异常吗？任何使调试成为可能的东西，因为我现在被它大量阻止了。

非常感谢。

尼克。

编辑：在函数的 table 存储日志中，我看到以下错误，

...obs.Script.Description.FunctionInvokerBase.<Invoke>d__29.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.Azure.WebJobs.Host.Executors.FunctionInvoker`1.<InvokeAsync>d__8.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.Azure.WebJobs.Host.Executors.FunctionExecutor.<InvokeAsync>d__22.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.Azure.WebJobs.Host.Executors.FunctionExecutor.<ExecuteWithWatchersAsync>d__21.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.Azure.WebJobs.Host.Executors.FunctionExecutor.<ExecuteWithLoggingAsync>d__19.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 System.Runtime.CompilerServices.TaskAwaiter.ValidateEnd(Task task)   at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.<ExecuteWithLoggingAsync>d__13.MoveNext()   --- End of inner exception stack trace ---

即使我在第一行手动抛出异常，我也会看到这个错误。真正的例外在哪里？

看着这些日志真的让我有时质疑微软的决定，这对任何人都有什么用？还是我在这里遗漏了一些重要的东西？

Answer 1

好的，这就是我的解决方案，这可能会因您遇到的问题而有所不同，因为该错误非常普遍。首先，我所做的是禁用我的函数的身份验证，以尝试让浏览器内编译器再次工作，因为自从我这样做以来，它就被破坏了，它没有帮助，它导致我的所有函数出现 404 错误。所以我再次启用它，这导致编译器开始工作！它表明我的 Azure 存储引用不匹配，我的 dll 以某种方式引用了 7.x 但在函数应用程序中期望 6.x，这很奇怪，因为我不记得曾经更改过它。无论如何，我创建了一个 project.json 文件，其中包含以下内容，

{
  "frameworks": {
    "net46":{
      "dependencies": {
        "WindowsAzure.Storage": "7.2.1"
      }
    }
   }
}

上传到各个函数的文件夹后，又可以用了。我现在将通过 project.json 文件明确设置我所有的外部依赖项，希望能防止这种情况再次发生。

It's worth noting that although this doesn't make the full exception get returned in-browser, it did enable me to see compiler errors, which is what was causing the issue and preventing me from handling any exceptions in the function app.

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One last note and to show how buggy Azure Function Apps are, even though Authentication is "enabled" according to the app settings, it's not working, this is why the in-browser compiler is now working. I'm working on getting it working again, but won't be replying to this thread anymore. Just be wary.

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