当应用程序位于远程计算机上时，未定义异常 [英] Exception is undefined when app is on remote machine

问题描述

当我对API进行$ http调用时，它从我的MVC控制器抛出异常，我用

When I make an $http call to API, and it throws an exception from my MVC controller, I log the exception message that is returned to my Angular code with

.then(function success(response){ // success },
      function error(response){ console.log(JSON.stringify(response);};})

这有效，并且显示自定义异常消息.但是，当我在IIS上的远程服务器上部署应用程序时，抛出异常时，response参数始终为:

This works and the custom exception message is displayed. However when I deploy the app on a remote server on IIS, when an exception is thrown, the response parameter is always:

{"data":{"Message":"An error has occurred."},"status":500,"config":{"method":"GET","transformRequest":[null],"transformResponse":[null],"url":...,"headers":{"Accept":"application/json, text/plain, */*"}},"statusText":"Internal Server Error"}

...基本上，它不包含自定义的Exception消息，它将始终只是显示发生了错误".

...basically, it doesn't contain the custom Exception message, it will always simply have "An error has occurred."

这可能是一个路由错误，也就是异常实际上没有到达我的Angular端吗?我这样做的逻辑是因为远程URL看起来像:

Could this be a routing error, a.k.a the exception doesn't actually reach my Angular side? My logic behind this is because the remote URL looks like:

website.com/extension，在我的本地是website.com

推荐答案

默认情况下，出于安全原因，从远程计算机访问时，完整的错误消息不会发送到客户端，因为它可能会泄露敏感数据.您可以通过将customErrors模式设置为Off来修改web.config，以将详细信息返回到远程计算机.但是，您应该首先考虑安全隐患.

By default, for security reasons, the full error message is not sent to the client when accessed from a remote machine as it could reveal sensitive data. You can modify the web.config to return the details to remote machines by setting the customErrors mode to Off. However, you should not do so without considering the security implications first.

<configuration>
   <system.web>
      <customErrors mode="Off"/>
   </system.web>
</configuration>

更好的做法是向客户端提供通用错误消息对不起，发生了意外错误！"并在日志中记录服务器上的实际错误消息.

A better practice is to give a generic error message to the client "Sorry, an unexpected error has occurred!" and record the actual error message on the server in your logs.

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