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https://issues.apache.org/jira/browse/SHIRO-413?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13565537#comment-13565537
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Dan Rollo commented on SHIRO-413:
---------------------------------
FWIW, after digging into this some more, it appears the problem of not calling
init() on Initializable's is NOT a problem for Realm subclasses, but it IS a
problem for Filter subclasses.
For example,
org.apache.shiro.config.IniSecurityManagerFactory.createSecurityManager(Ini
ini, Ini.Section mainSection) ensure Realms are init'ed by the call to
IniSecurityManagerFactory.initRealms(securityManager) - which invokes
Initializable.init().
However, Filter subclasses do not get init'ed. Only the
org.apache.shiro.web.servlet.AbstractFilter.init(FilterConfig filterConfig) is
called by a web server class (tomcat6:
org.apache.catalina.core.ApplicationFilterConfig().getFilter():295). This call
to AbstractFilter.init(FilterConfig filterConfig) results in a call to an
init() method (however, this init() method is NOT an impl of Initializable, it
is: AbstractShiroFilter.init() throws Exception).
Also, only the single "uber" ShiroFilter instance gets this call from
....catalina.core.ApplicationFilterConfig().getFilter() (no Filter subclasses
get this call).
All this said, I'm not at all certain my Filter implementation is incorrect
(and maybe much of it's logic should either be moved to a Realm OR my filter
should make use of the Tomcat Filter delegate redesign I saw mentioned
elsewhere -> a design change that would make it easier to reuse existing Tomcat
filters as it - which is basically exactly what I am trying to do).
> init() method is not called on class that implements
> org.apache.shiro.util.Initializable
> ----------------------------------------------------------------------------------------
>
> Key: SHIRO-413
> URL: https://issues.apache.org/jira/browse/SHIRO-413
> Project: Shiro
> Issue Type: Bug
> Components: Configuration
> Affects Versions: 1.2.1
> Reporter: Dan Rollo
> Priority: Critical
>
> Classes configured in shiro.ini that implement the "Initializable" interface
> should automatically have their "init()" methods called. It appears this call
> is not always occurring. Example below:
> public class WaffleNegotiateAuthFilter extends BasicHttpAuthenticationFilter
> implements Initializable
> {
> ...
> private final NegotiateSecurityFilter negotiateFilter;
> public WaffleNegotiateAuthFilter() {
> negotiateFilter = new NegotiateSecurityFilter();
> }
> @Override
> protected void onFilterConfigSet() throws Exception {
> negotiateFilter.init(getFilterConfig());
> }
> /**
> * Initializes this object.
> *
> * @throws org.apache.shiro.ShiroException
> * if an exception occurs during initialization.
> */
> public void init() throws ShiroException {
> try {
> super.init(getFilterConfig());
> } catch (ServletException e) {
> throw new ShiroException(e);
> }
> }
> ...
> I still do not see the init() method being called.
> See this thread for more details:
> http://shiro-user.582556.n2.nabble.com/AuthenticatingFilter-lifecycle-when-used-in-urls-td7578146.html
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