Catalina-Error-Valve

This is an implementation of the Catalina Valve interface that can be used to render global Tomcat error pages. This valve can be used to override the default Catalina error page valve set using the errorReportValveClass attribute of the <Host/> element in server.xml. As with the default error report valve class, this valve (ErrorReportingValve) will generate error pages whenever there is a container-wide error generated by a request. This valve, however, let you use a customized HTML page to be displayed for the error.

###Configuration To use this valve, do the followings:

• Pull code down and build (use Maven).
• Put the generated catalina-error-valve jar file in Tomcat's lib directory.
• Edit server.xml and add set attribute errorReportValveClass for the desired .
  • <Host ... errorReportValveClass="com.vvivien.oss.ErrorReportingValve">
• Add properties in catalina.properties to point to HTML pages.
• All properties for the valve start with prefix "error.page.".
  • error.page.* - default page to display when no specific pages are configured
  • error.page.XXX - Use XXX to specify an HTTP response code (i.e error.page.404).

####Example:

error.page.*=./error/errorAll.html    # the default error page
error.page.404=./error/error404.html  # error page for a 404 
error.page.500=./error/error.500.html # error page for a 500

Each error.page. entry points to the path of an HTML page that will be displayed upon error. The location of the page can be relative (to catalina's working directory) or absolute. If none of the error pages are not found or configured properly, the class will default to an internal simple page (you don't want that one).

Reference:

See attribute "errorReportValveClass" in page http://tomcat.apache.org/tomcat-9.0-doc/config/host.html