有沒有辦法在重定向到錯誤頁面（Java）之前捕獲錯誤的堆棧跟蹤？

Question

當我的Spring MVC應用程序發生錯誤時，我想發送一封包含導致錯誤的代碼的堆棧跟蹤的電子郵件。

我正在使用@ControllerAdvice和@ExceptionHandler註釋重定向到一個方法，該方法將輸出異常的堆棧跟蹤並通過電子郵件發送該信息。但是，堆棧跟蹤信息適用於在錯誤處理程序中執行的代碼，而不是導致錯誤的代碼。

這裏是輸出堆棧跟蹤錯誤處理程序代碼等

for(StackTraceElement stackTraceElement : Thread.currentThread().getStackTrace()) { 
    logger.error(stackTraceElement); 
} 

這導致這樣的輸出：

java.lang.Thread.getStackTrace(Thread.java:1588) 
sdcounty.dcss.cat.controllers.ErrorController.handleException(ErrorController.java:120) 
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
java.lang.reflect.Method.invoke(Method.java:606) 
org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215) 
org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) 
org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) 
org.springframework.web.servlet.mvc.method.annotation.ExceptionHandlerExceptionResolver.doResolveHandlerMethodException(ExceptionHandlerExceptionResolver.java:362) 
org.springframework.web.servlet.handler.AbstractHandlerMethodExceptionResolver.doResolveException(AbstractHandlerMethodExceptionResolver.java:60) 
org.springframework.web.servlet.handler.AbstractHandlerExceptionResolver.resolveException(AbstractHandlerExceptionResolver.java:138) 
org.springframework.web.servlet.DispatcherServlet.processHandlerException(DispatcherServlet.java:1167) 
org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1004) 
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:955) 
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) 
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) 
org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:621) 
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) 
javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
sdcounty.dcss.cat.ValidationFilter.doFilter(ValidationFilter.java:33) 
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) 
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) 
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) 
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) 
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) 
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023) 
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) 
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) 
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
java.lang.Thread.run(Thread.java:744) 

但是我希望的這個輸出（它是控制檯中顯示的內容）：

java.lang.NullPointerException 
at sdcounty.dcss.cat.controllers.LegalPaperlessFaceSheetController.displayFaceSheet(LegalPaperlessFaceSheetController.java:713) 
at sdcounty.dcss.cat.controllers.LegalPaperlessFaceSheetController.faceSheet(LegalPaperlessFaceSheetController.java:1106) 
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
at java.lang.reflect.Method.invoke(Method.java:606) 
at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215) 
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132) 
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:110) 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:781) 
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:721) 
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:83) 
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:943) 
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:877) 
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:966) 
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:857) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621) 
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:842) 
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
at sdcounty.dcss.cat.ValidationFilter.doFilter(ValidationFilter.java:33) 
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243) 
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) 
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222) 
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123) 
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502) 
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171) 
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99) 
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953) 
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118) 
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408) 
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023) 
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589) 
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312) 
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) 
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) 
at java.lang.Thread.run(Thread.java:744) 

Answer 1

Thread.currentThread().getStackTrace()返回當前堆棧trac e（這應該不會令人意外）。

如果有異常對象的引用，那麼你可以使用e.getStackTrace()獲得堆棧跟蹤，當異常被拋出（其實，當創建異常對象）（在一個局部變量e說）。這是打印異常時顯示的內容。

如果你寧願不關心格式化堆棧跟蹤自己，你也可以使用printStackTrace(PrintStream)或printStackTrace(PrintWriter)方法，該方法將打印異常的詳細信息和堆棧跟蹤到您選擇的PrintWriter或PrintStream，以相同的格式例外通常會打印到控制檯。