Spring security custom filter called multiple times

问题

I have a custom logout filter called six times. Twice as soon I try to access the application, twice when I enter username/password and click on 'Login' and then twice again when I click on 'logout'.

What am I doing wrong?

Configuration:

<http auto-config="true" use-expressions="true">
    <intercept-url pattern="/admin/**" access="hasRole('ROLE_ADMIN_FUNCTIONS')" />      
    <intercept-url pattern="/**" access="hasRole('ROLE_USER')" />

    <form-login login-page="/login"
        authentication-success-handler-ref="customAuthenticationSuccessHandlerBean"
        authentication-failure-handler-ref="customAuthenticationFailureHandlerBean" />
    <logout invalidate-session="true" success-handler-ref="logoutHandlerBean" />
    <session-management session-fixation-protection="migrateSession">
        <concurrency-control max-sessions="1"
            expired-url="/login_sessionexpired" />
    </session-management>

    <custom-filter before="LOGOUT_FILTER" ref="customLogoutFilter" />
</http>

<beans:bean id="customLogoutFilter" class="com.hurontg.libms.security.CustomLogoutFilter" />

The filter:

public class CustomLogoutFilter extends OncePerRequestFilter {
/**
 * 
 */
private XLogger logger = XLoggerFactory
        .getXLogger(CustomLogoutFilter.class.getName());

@Override
protected void doFilterInternal(HttpServletRequest req,
        HttpServletResponse res, FilterChain chain)
        throws ServletException, IOException {

    logger.error("========================================================================================");
    logger.error("$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ Custom Logout Filter $$$$$$$$$$$$$$$$$$$$$$$$$$$$$");
    logger.error("========================================================================================");

    chain.doFilter(req, res);
}

}

Spring version: 4.1.1 Spring security: 3.2.5

回答1:

It is likely being called for other URLs that are being requested. For example, if you have any css, javascript, images that are loaded on the page it will be called for each of those. Try adding a logging statement that displays the current request information to find out if that is the case. For example,

logger.error("URL = " + req.getRequestURL());

回答2:

If you are using Spring Boot, any GenericFilterBean (OncePerRequestFilter is one) in the context will be automatically added to the filter chain. Meaning the configuration you have above will include the same filter twice.

The easiest workaround for this is to define a FilterRegistrationBean in the context, and have it disabled:

<beans:bean id="customLogoutFilterRegistration" class="org.springframework.boot.context.embedded.FilterRegistrationBean">
    <beans:property name="filter" ref="customLogoutFilter"/>
    <beans:property name="enabled" value="false"/>
</beans:bean>

回答3:

Just sharing my case :(

I wasn't setting authentication.setAuthenticated(true) in the AuthenticationProvider.

Hence, AbstractPreAuthenticatedProcessingFilter called authenticate once, then AbstractSecurityInterceptor was also calling authenticateIfNeeded.

来源：https://stackoverflow.com/questions/29285607/spring-security-custom-filter-called-multiple-times

标签

Spring

spring-security

servlet-filters