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Matchers: (v5.0)

1) Definition

The “security filter” is in charge of protecting URL, requesting authentication and optionally authorization.

In some cases, you may want to bypass this “security filter” and this can be done using the matchers parameter which is generally a list of matcher names. A matcher is generally defined in the security configuration.

The matchers can also be used to always apply some logic on the URLs, like adding some security headers.

2) Available matchers

A matcher can be defined by implementing the Matcher interface. It has only one method: boolean matches(WebContext context) to say if the “security filter” must be applied.

A few matchers are available (but you can of course develop your own matchers):

3) Default matchers

Most pac4j implementations use the pac4j logics and matchers and thus the DefaultMatchingChecker component. In that case, the following matchers are automatically available via the following short keywords: