This section describes the trace collection points of the trace of a Web container when a filter that is invoked during Forward or Include is specified, and also describes the trace information that can be collected.

In the case of a Web container in which a filter that is invoked during Forward or Include is specified, the trace information that can be collected is different when the processing terminates normally, and when an error occurs. Trace acquisition points for both cases are explained below.

When an error page is set up by using the errorPage attribute in the page directive of a JSP, and an exception occurs in the JSP, the error page will be displayed when forwarding the request. Therefore, the trace output during Forward will be output even when an error page is displayed in the JSP.

Organization of this section

8.7.1 Trace collection points of a Web container when the processing terminates normally (filter trace)

8.7.2 Trace collection points of a Web container when an exception occurs (filter trace)