Servlet filter is not invoked, when using virtual hosts in the site configuration

Legacy Knowledge Base

Published Jun. 30, 2025

Servlet filter is not invoked, when using virtual hosts in the site configuration

Written By

Kanchan Bisht

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Issue

The implementation of a servlet filter for friendly URLs is causing issues. It works as expected without Virtual host configuration, but when the virtual host is configured, a filter is not invoked.

Environment

Liferay DXP 7.4 update 23

Resolution

The root cause is VirtualHostFilter changing the URI from '/' to '/web/guest', causing the filter's URL pattern to no longer match. As a result, it appears that the following needs to be added to the respective code:
"url-pattern=/web/guest/*", "url-pattern=/"
"before-filter=Virtual Host Filter"
For example:
```
@Component(
 immediate = true,
 property = {
 "before-filter=Virtual Host Filter", "servlet-context-name=",
 "servlet-filter-name=redirectLoggedUsersFilter",
 "url-pattern=/web/guest/*", "url-pattern=/"
 },
 service = Filter.class
)
```