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POSpring Security configuration causing redirect loop
 

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    <p>I have recently started learning spring security and trying to incorporate it into my existing web application. The app is simple in configuration so I'm confused where I've managed to screw it up.</p> <p>My web.xml</p> <pre><code>&lt;!-- FilterChain proxy for security --&gt; &lt;filter&gt; &lt;filter-name&gt;springSecurityFilterChain&lt;/filter-name&gt; &lt;filter-class&gt;org.springframework.web.filter.DelegatingFilterProxy&lt;/filter-class&gt; &lt;/filter&gt; &lt;filter-mapping&gt; &lt;filter-name&gt;springSecurityFilterChain&lt;/filter-name&gt; &lt;url-pattern&gt;/*&lt;/url-pattern&gt; &lt;/filter-mapping&gt; &lt;context-param&gt; &lt;param-name&gt;contextConfigLocation&lt;/param-name&gt; &lt;param-value&gt;/WEB-INF/appname-servlet.xml&lt;/param-value&gt; &lt;/context-param&gt; &lt;listener&gt; &lt;listener-class&gt;org.springframework.web.context.ContextLoaderListener&lt;/listener-class&gt; &lt;/listener&gt; &lt;servlet&gt; &lt;servlet-name&gt;nistreq&lt;/servlet-name&gt; &lt;servlet-class&gt;org.springframework.web.servlet.DispatcherServlet&lt;/servlet-class&gt; &lt;init-param&gt; &lt;param-name&gt;contextConfigLocation&lt;/param-name&gt; &lt;param-value&gt;/WEB-INF/appname-servlet.xml&lt;/param-value&gt; &lt;/init-param&gt; &lt;/servlet&gt; &lt;servlet-mapping&gt; &lt;servlet-name&gt;appname&lt;/servlet-name&gt; &lt;url-pattern&gt;/&lt;/url-pattern&gt; &lt;/servlet-mapping&gt; &lt;welcome-file-list&gt; &lt;welcome-file&gt;mainpage.jsp&lt;/welcome-file&gt; &lt;/welcome-file-list&gt; </code></pre> <p>and the security-config.xml</p> <pre><code>&lt;security:http access-denied-page="/denied.jsp" use-expressions="true"&gt; &lt;security:form-login login-page="/login.jsp" authentication-failure-url="/login.jsp?login_error=true" /&gt; &lt;security:intercept-url pattern="/*" access="isAuthenticated()"/&gt; &lt;security:logout/&gt; &lt;/security:http&gt; </code></pre> <p>There looks to be some bad mojo between my URIs I've mapped for the springSecurityFilterChain ("/<em>"), the servlet mapping's URL pattern ("/"), and the security:intercept-url pattern ("/</em>"). This causes a redirect loop. I've gone through countless variations of moving terms around, pushing content into sub-packages to avoid protecting the application root, etc. I always end up with a grab bag of a 404, a redirect loop, etc. </p> <p>I'm doing something really boneheaded here and would appreciate another set of eyes. Thanks for any insights...</p>
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