Struts2 exception: HTTP Status 404-/struts2/book/addbook.action

HTTP Status 404-/struts2/book/addbook.action

If this error occurs in the access path in the STRUTS2 framework, there are two possible reasons for this:

1. Path error, that is, the Name property of the action tag and the path of the package's namespace attribute are problematic.

2. The STRUTS2 filter is not configured in Web. Xml. (because the STRUTS2 process must go through the filter first, if there is no filter configured then the problem will occur)

1 <Filter>2     <Filter-name>Struts2</Filter-name>3     <Filter-class>Org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</Filter-class>4 </Filter>5 6 <filter-mapping>7     <Filter-name>Struts2</Filter-name>8     <Url-pattern>/*</Url-pattern>9 </filter-mapping>

Struts2 exception: HTTP Status 404-/struts2/book/addbook.action