Question

I have used spring security 3.0.7 and I am implementing concurrency control in my project. But it is not working. I have used

<security:session-management>
            <security:concurrency-control error-if-maximum-exceeded="true" max-sessions="1"/>
</security:session-management>

Even I tried solution from spring security reference but it didn’t work out.
Here is my configuration file content :

  <session-management session-authentication-strategy-ref="sas"/>
</http>

<beans:bean id="concurrencyFilter"
   class="org.springframework.security.web.session.ConcurrentSessionFilter">
  <beans:property name="sessionRegistry" ref="sessionRegistry" />
  <beans:property name="expiredUrl" value="/session-expired.htm" />
</beans:bean>

<beans:bean id="myAuthFilter" class=
   "org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter">
  <beans:property name="sessionAuthenticationStrategy" ref="sas" />
  <beans:property name="authenticationManager" ref="authenticationManager" />
</beans:bean>

<beans:bean id="sas" class=
 "org.springframework.security.web.authentication.session.ConcurrentSessionControlStrategy">
  <beans:constructor-arg name="sessionRegistry" ref="sessionRegistry" />
  <beans:property name="maximumSessions" value="1" />
</beans:bean>

<beans:bean id="sessionRegistry"
    class="org.springframework.security.core.session.SessionRegistryImpl" />

I am getting following exception :

org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Filter beans '<myAuthFilter>' and '<org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter#0>' have the same 'order' value. When using custom filters, please make sure the positions do not conflict with default filters. Alternatively you can disable the default filters by removing the corresponding child elements from <http> and avoiding the use of <http auto-config='true'>.
Offending resource: class path resource [config/auth.xml]
    at org.springframework.beans.factory.parsing.FailFastProblemReporter.error(FailFastProblemReporter.java:68)
    at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:85)
    at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:72)
    at org.springframework.security.config.http.HttpSecurityBeanDefinitionParser.checkFilterChainOrder(HttpSecurityBeanDefinitionParser.java:196)
    at org.springframework.security.config.http.HttpSecurityBeanDefinitionParser.parse(HttpSecurityBeanDefinitionParser.java:132)
    at org.springframework.security.config.SecurityNamespaceHandler.parse(SecurityNamespaceHandler.java:86)
    at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1338)
    at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseCustomElement(BeanDefinitionParserDelegate.java:1328)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:135)
    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:93)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:493)
    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:390)

Can anyone help with this question?

Answer 1

If you have written UserPrincipal and UserPrincipalImpl(your own implementation), you should override Object’s equals() and hashCode() methods.