The global web.xml is located at server/xxx/deployers/jbossweb.deployer, you can specify them there. And you will probably want to place the HTML pages in server/xxx/deploy/ROOT.war.

P.S. You never said with version of JBoss AS so I assume the latest (5.x).

Wrong web.xml file - the one you edited is specific to the ROOT application. You need to edit the global web.xml file. In 4.2.x it is located at server/xxx/deploy/jboss-web.deployer/conf.

This two url are different

1)http://host:8080/blablah - returns correct 404 page

2)http://host:8080/app1/blablah - returns a blank page ..


You must put also in app1/WEB-INF/web.xml this code

<error-page>
<error-code>404</error-code>
/404.html
</error-page

If there is a way, the global web.xml is not it. Think of it this way - the configuration for a web app is the combination of the contents of the global web.xml and the web.xml specific to that app. Thus to get the 404 page for app1, you would have to place a copy of 404.html into app1.war (though you do not need to add anything to the web.xml for app1 - the global web.xml declaration is sufficient.) But this still would not work if the user entered a bad context name (for example http://hostname:8080/nosuchapp/aaa) - that would still give the app server's built in error message.

There is probably a way of using a filter, or some other mechanism, to do this, however. Perhaps someone knows off-hand.