coldfusion - 在 ColdFusion 中处理 500 个 JRun servlet

Question

所有 -

有没有办法在 ColdFusion 中处理 500 JRun servlet 错误？我尝试使用 cferror以及在 ColdFusion 管理中使用站点范围的处理程序，但它似乎不起作用。

这是错误信息

500

ROOT CAUSE:  java.lang.IllegalArgumentException     at
coldfusion.filter.FormScope.parseName(FormScope.java:408)   at
coldfusion.filter.FormScope.parseQueryString(FormScope.java:360)    at
coldfusion.filter.FormScope.parsePostData(FormScope.java:328)   at
coldfusion.filter.FormScope.fillForm(FormScope.java:278)    at
coldfusion.filter.FusionContext.SymTab_initForRequest(FusionContext.java:438)   at 
coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:33)   at
coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22) at
coldfusion.filter.RequestThrottleFilter.invoke(RequestThrottleFilter.java:126)  at 
coldfusion.CfmServlet.service(CfmServlet.java:200)  at
coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89) at 
jrun.servlet.FilterChain.doFilter(FilterChain.java:86)  at
coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42)  at
coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)  at 
jrun.servlet.FilterChain.doFilter(FilterChain.java:94)  at
jrun.servlet.FilterChain.service(FilterChain.java:101)  at
jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)     at
jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)  at
jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)   at
jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)   at
jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)    at
jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)   at 
jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)


javax.servlet.ServletException: ROOT CAUSE: 
java.lang.IllegalArgumentException  at
coldfusion.filter.FormScope.parseName(FormScope.java:408)   at
coldfusion.filter.FormScope.parseQueryString(FormScope.java:360)    at
coldfusion.filter.FormScope.parsePostData(FormScope.java:328)   at
coldfusion.filter.FormScope.fillForm(FormScope.java:278)    at
coldfusion.filter.FusionContext.SymTab_initForRequest(FusionContext.java:438)   at 
coldfusion.filter.GlobalsFilter.invoke(GlobalsFilter.java:33)   at
coldfusion.filter.DatasourceFilter.invoke(DatasourceFilter.java:22) at
coldfusion.filter.RequestThrottleFilter.invoke(RequestThrottleFilter.java:126)  at 
coldfusion.CfmServlet.service(CfmServlet.java:200)  at
coldfusion.bootstrap.BootstrapServlet.service(BootstrapServlet.java:89) at 
jrun.servlet.FilterChain.doFilter(FilterChain.java:86)  at
coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:42)  at
coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)  at 
jrun.servlet.FilterChain.doFilter(FilterChain.java:94)  at
jrun.servlet.FilterChain.service(FilterChain.java:101)  at
jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)     at
jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)  at
jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)   at
jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)   at
jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)    at
jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)   at 
jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)  at
coldfusion.monitor.event.MonitoringServletFilter.doFilter(MonitoringServletFilter.java:70)  at
coldfusion.bootstrap.BootstrapFilter.doFilter(BootstrapFilter.java:46)  at 
jrun.servlet.FilterChain.doFilter(FilterChain.java:94)  at
jrun.servlet.FilterChain.service(FilterChain.java:101)  at
jrun.servlet.ServletInvoker.invoke(ServletInvoker.java:106)     at
jrun.servlet.JRunInvokerChain.invokeNext(JRunInvokerChain.java:42)  at
jrun.servlet.JRunRequestDispatcher.invoke(JRunRequestDispatcher.java:286)   at
jrun.servlet.ServletEngineService.dispatch(ServletEngineService.java:543)   at
jrun.servlet.jrpp.JRunProxyService.invokeRunnable(JRunProxyService.java:203)    at
jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java:428)   at 
jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)

Answer 1

您收到的错误发生在 JRun 级别。这种类型的错误发生在 ColdFusion 错误处理程序可以捕获它之前。您需要在 JRun 级别创建和分配错误处理程序。这可以通过编辑 web.xml 文件来完成。 (进行更改后，您需要重新启动 JRun 服务器。)

详情可在此页面上找到，JRun 4 Programmers Guide - Servlet Programming Techniques - Handling exceptions .

You can define how a web application handles errors using the error-page element in the WEB-INF/web.xml file. You can also define error handling for all web applications on the JRun server by adding error-page elements to the SERVER-INF/default-web.xml file.

Handling HTTP error codes

The error-code subelement of error-page in the web.xml file defines how JRun handles HTTP error codes generated during the processing of a servlet.

You define an HTTP status code for the error-code element and then map the code to a destination in the location element. The following example maps the HTTP 500 (Internal Server Error) status code to the servererror.jsp page:

<error-page>
    <error-code>500</error-code>
    <location>/error-pages/servererror.jsp</location>
</error-page>

The following table lists common error-related HTTP status codes:

HTTP error code    Description
  400              Bad Request
  401              Unauthorized
  403              Forbidden
  404              Not Found
  408              Request Time-out
  500              Internal Server Error

Accessing error attributes

The HttpServletRequest and HttpServletResponse objects provide access to error information so that you can generate meaningful debugging information or targeted exception handlers. For more information and examples, see the link that I included above.

JRun sets several attributes on the request object when an error is thrown. The following describes these attributes:

• javax.servlet.error.status_code - Defines the HTTP error code, if applicable, as an int object. If the servlet throws an exception not related to HTTP, the status code is usually set to 500 (Internal Server Error).
• javax.servlet.error.message - Returns the exception or error message.
• javax.servlet.error.exception_type - Defines the type of exception.
• javax.servlet.error.exception - Defines the actual exception thrown. You can use the printStackTrace method to view the stack trace of the exception.
• javax.servlet.error.request_uri - Defines the request URI prior to the exception being thrown.