Java 异常和 HTTP 500 错误

Question

与服务器端的 Java 异常和 500 有任何相关性吗？错误代码 http这是 Internal Server Error 。发生这种情况是因为 unhandled exceptions在catch阻止或者可能是因为 unchecked runtime 引发的异常

我怎么能得出这个结论，对我来说，-是Apache Camel项目有 spring-boot-starter-parent并且有Spring Quartz内配置。基本上REST调用OAuth 1.0身份验证验证。

我正在测试来自 Swagger 的应用程序。我无法得出结论，

1. OAuth 1.0认证是否成功
2. 错误处理程序无法捕获特定的，- error code在项目中，因为它是unhandled和runtime exception基本上

Swagger 给出以下响应以及 500 错误代码。

"<Error><Message>An error has occurred.</Message><ExceptionMessage>Object reference not set to an instance of an object.</ExceptionMessage><ExceptionType>System.NullReferenceException</ExceptionType><StackTrace>   at API.ExecutionTimeFilterAttribute.OnActionExecuted(HttpActionExecutedContext actionExecutedContext)&#xD;\n   at System.Web.Http.Filters.ActionFilterAttribute.OnActionExecutedAsync(HttpActionExecutedContext actionExecutedContext, CancellationToken cancellationToken)&#xD;\n--- End of stack trace from previous location where exception was thrown ---&#xD;\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()&#xD;\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)&#xD;\n   at System.Web.Http.Filters.ActionFilterAttribute.&lt;CallOnActionExecutedAsync&gt;d__5.MoveNext()&#xD;\n--- End of stack trace from previous location where exception was thrown ---&#xD;\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()&#xD;\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)&#xD;\n   at System.Web.Http.Filters.ActionFilterAttribute.&lt;ExecuteActionFilterAsyncCore&gt;d__0.MoveNext()&#xD;\n--- End of stack trace from previous location where exception was thrown ---&#xD;\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()&#xD;\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)&#xD;\n   at System.Web.Http.Controllers.ActionFilterResult.&lt;ExecuteAsync&gt;d__2.MoveNext()&#xD;\n--- End of stack trace from previous location where exception was thrown ---&#xD;\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()&#xD;\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)&#xD;\n   at System.Web.Http.Filters.AuthorizationFilterAttribute.&lt;ExecuteAuthorizationFilterAsyncCore&gt;d__2.MoveNext()&#xD;\n--- End of stack trace from previous location where exception was thrown ---&#xD;\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()&#xD;\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)&#xD;\n   at System.Web.Http.Dispatcher.HttpControllerDispatcher.&lt;SendAsync&gt;d__1.MoveNext()</StackTrace></Error>"

即使有错误secret key , consumer key ，都是同样的场景。

我认为 key 对于这两种情况都不合适。

但是我想知道，

is 500 error code is common for unhandled exceptions & unchecked runtime exceptions or there we will be 400 series

如果出现 http (500) 错误代码，而不是在代码中处理并作为 REST 的响应字符串的一部分进行响应的自定义 java 错误代码，我如何判断测试场景来电。

Answer 1

What you could do here is to add an ExceptionHandler and debug the root cause of the exception. See: http://www.baeldung.com/exception-handling-for-rest-with-spring OR http://zetcode.com/springboot/exceptionhandler/ OR http://www.springboottutorial.com/spring-boot-exception-handling-for-rest-services

大多数框架和库(用于构建 RESTful API)默认情况下会针对任何未捕获(或运行时)异常抛出 500 错误，这只是因为它们无法决定实际的业务逻辑。

但服务器端开发人员有责任处理任何未捕获(或运行时)异常，并根据 REST API 标准或业务用例将它们转换为正确的 HTTP 响应代码。请参阅:http://www.restapitutorial.com/httpstatuscodes.html针对用例的 HTTP 响应代码的理想映射。

P.S. It is like asking: should we store a set of integer values in an array of Strings or in an array of integers. Language/Framework does not mandate these nitty gritty details, right? (I mean sometimes they do, with say, Generics in Java, but there is a limit :))