This week's book giveaway is in the OCAJP 8 forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide and have Edward Finegan & Robert Liguori on-line! See this thread for details.
If you set up your web.xml file the way struts suggests, you should have the following entry:
If you have this mapping, you should be able to call a JSP directly without going through an action and not get this error. If you've got something like *.* in your url-pattern, then every url the comes in will go to the action servlet and will have to be configured as an action mapping in your struts-config.xml file. I suspect this may be what's happening