Spring Security - No visible WebSecurityExpressionHandler instance could be found in the application context

Question

I am having trouble displaying a logout link in a JSP page only if the user is authenticated. Here is the exception I have at this line of the JSP page:

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Answer 1

You can just add one to your application context

<bean id="webexpressionHandler" class="org.springframework.security.web.access.expression.DefaultWebSecurityExpressionHandler" /> 

but the easiest way is just to enable expressions in your <http> configuration, and one will be added for you. This only means that you have to use expressions within that block, not in Java code such as method @Secured annotations.