有没有办法在重定向到错误页面（Java）之前捕获错误的堆栈跟踪？

Question

当我的Spring MVC应用程序发生错误时，我想发送一封包含导致错误的代码的堆栈跟踪的电子邮件。

我正在使用@ControllerAdvice和@ExceptionHandler注释重定向到一个方法，该方法将输出异常的堆栈跟踪并通过电子邮件发送该信息。但是，堆栈跟踪信息适用于在错误处理程序中执行的代码，而不是导致错误的代码。

这里是输出堆栈跟踪错误处理程序代码等

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

这导致这样的输出：

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) 

但是我希望的这个输出（它是控制台中显示的内容）：

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()返回当前堆栈trac e（这应该不会令人意外）。

如果有异常对象的引用，那么你可以使用e.getStackTrace()获得堆栈跟踪，当异常被抛出（其实，当创建异常对象）（在一个局部变量e说）。这是打印异常时显示的内容。

如果你宁愿不关心格式化堆栈跟踪自己，你也可以使用printStackTrace(PrintStream)或printStackTrace(PrintWriter)方法，该方法将打印异常的详细信息和堆栈跟踪到您选择的PrintWriter或PrintStream，以相同的格式例外通常会打印到控制台。