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POUser session getting mixed up on tomcat
 

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  1. POUser session getting mixed up on tomcat
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    <p>We are using Tomcat 6.29 behind IIS7.5, with spring, hibernate and struts2 framework. We are now beginning to notice that the server sessions are getting mixed up especially in Ajax request. </p> <p>More details about the problem</p> <ul> <li>User 1 requests page1, user 2 request page2. But user1 gets served page2 and user2 gets server page1.</li> <li>The session ids are also changing, but on refreshing the page, the correct page is served up.</li> <li>The problem seems to be happening more often when the number of users are high.</li> </ul> <p>Any pointers to the origin of the problem would help, the code runs fine with lesser number of users and no such instance is reported.</p> <p>EDIT</p> <p><strong>web.xml</strong></p> <pre class="lang-xml prettyprint-override"><code>&lt;web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5"&gt; &lt;display-name&gt;bm&lt;/display-name&gt; &lt;context-param&gt; &lt;param-name&gt;contextConfigLocation&lt;/param-name&gt; &lt;param-value&gt;classpath:spring/*Context.xml&lt;/param-value&gt; &lt;/context-param&gt; &lt;filter&gt; &lt;filter-name&gt;encodingFilter&lt;/filter-name&gt; &lt;filter-class&gt;org.springframework.web.filter.CharacterEncodingFilter&lt;/filter-class&gt; &lt;init-param&gt; &lt;param-name&gt;encoding&lt;/param-name&gt; &lt;param-value&gt;UTF-8&lt;/param-value&gt; &lt;/init-param&gt; &lt;init-param&gt; &lt;param-name&gt;forceEncoding&lt;/param-name&gt; &lt;param-value&gt;true&lt;/param-value&gt; &lt;/init-param&gt; &lt;/filter&gt; &lt;filter&gt; &lt;filter-name&gt;struts2&lt;/filter-name&gt; &lt;filter-class&gt;org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter&lt;/filter-class&gt; &lt;/filter&gt; &lt;filter-mapping&gt; &lt;filter-name&gt;encodingFilter&lt;/filter-name&gt; &lt;url-pattern&gt;/*&lt;/url-pattern&gt; &lt;/filter-mapping&gt; &lt;filter-mapping&gt; &lt;filter-name&gt;struts2&lt;/filter-name&gt; &lt;url-pattern&gt;/*&lt;/url-pattern&gt; &lt;/filter-mapping&gt; &lt;listener&gt; &lt;listener-class&gt;org.springframework.web.context.ContextLoaderListener&lt;/listener-class&gt; &lt;/listener&gt; &lt;listener&gt; &lt;listener-class&gt;org.apache.struts2.tiles.StrutsTilesListener&lt;/listener-class&gt; &lt;/listener&gt; </code></pre> <p><strong>struts.xml</strong></p> <pre class="lang-xml prettyprint-override"><code>&lt;result-types&gt; &lt;result-type name="jasper" class="org.apache.struts2.views.jasperreports.JasperReportsResult"/&gt; &lt;result-type name="tiles" class="org.apache.struts2.views.tiles.TilesResult" /&gt; &lt;/result-types&gt; &lt;interceptors&gt; &lt;interceptor name="sessionLoggin" class="com.inrev.bm.interceptor.IRLoggingInterceptor" /&gt; &lt;interceptor name="appAccess" class="appAccessInterceptor" /&gt; &lt;interceptor-stack name="newStack"&gt; &lt;interceptor-ref name="exception"/&gt; &lt;interceptor-ref name="alias"/&gt; &lt;interceptor-ref name="servletConfig"/&gt; &lt;interceptor-ref name="i18n"/&gt; &lt;interceptor-ref name="prepare"/&gt; &lt;interceptor-ref name="chain"/&gt; &lt;interceptor-ref name="debugging"/&gt; &lt;interceptor-ref name="scopedModelDriven"/&gt; &lt;interceptor-ref name="modelDriven"/&gt; &lt;interceptor-ref name="fileUpload"/&gt; &lt;interceptor-ref name="checkbox"/&gt; &lt;interceptor-ref name="multiselect"/&gt; &lt;interceptor-ref name="staticParams"/&gt; &lt;interceptor-ref name="params"&gt; &lt;param name="excludeParams"&gt; dojo\..*,^struts\..*&lt;/param&gt; &lt;/interceptor-ref&gt; &lt;interceptor-ref name="actionMappingParams"/&gt; &lt;interceptor-ref name="sessionLoggin"/&gt; &lt;interceptor-ref name="appAccess"/&gt; &lt;/interceptor-stack&gt; &lt;/interceptors&gt; &lt;default-interceptor-ref name="newStack"/&gt; </code></pre> <p><strong>Other Information</strong></p> <p>1) Users are login in by submitting a form, on login we perform the following,</p> <pre class="lang-java prettyprint-override"><code>public class xxxAction extends ActionSupport implements SessionAware { public String execute() { session.clear(); if (session instanceof org.apache.struts2.dispatcher.SessionMap) { try { ((org.apache.struts2.dispatcher.SessionMap) session).invalidate(); } catch (IllegalStateException e) { log.error("Session Invalidate Failed ", e); } //Authorization code happens here session.put("orgs", orgs); session.put("currentOrg", org); session.put("permission", adminDAO.getRolePermission(orgs.get(0).getRoleId())); session.put("simplyApp", simplyApp); session.put("user", user); return "login" } } </code></pre> <p>2) Os being used is windows 2008 RC2</p> <p><strong>EDIT2</strong> INCEPTOR CODE</p> <p>INTERCEPTOR 1</p> <pre class="lang-java prettyprint-override"><code>public String intercept(ActionInvocation invocation) throws Exception { String result = null; String className = invocation.getAction().getClass().getName(); Map session = invocation.getInvocationContext().getSession(); IRUser user = (IRUser) session.get("user"); IROrgname org = (IROrgname)session.get("currentOrg"); IRAppDetails simplyApp = (IRAppDetails)session.get("simplyApp"); String sessionId = (String)session.get("sessionId"); boolean switchUser =session.get("switchUser")!=null ? (Boolean)session.get("switchUser") : false; if(className.indexOf("IRLoginAction")!=-1 || className.indexOf("IRContactUsAction")!=-1 || className.indexOf("IRIPNAction")!=-1 || className.indexOf("IRPaymentAction")!=-1 || className.indexOf("IRServiceAction")!=-1 || className.indexOf("IRAppBossAction") !=-1) { result= invocation.invoke(); session.put("PREV_CLASS_NAME", className); } else if(!(className.indexOf("IRLoginAction")!=-1) &amp;&amp; (user !=null &amp;&amp; org!=null)) { if(!IRSessionManager.getInstance().compareSession(user.getUserId(), sessionId) &amp;&amp; !switchUser) { session.clear(); if (session instanceof org.apache.struts2.dispatcher.SessionMap) { try { ((org.apache.struts2.dispatcher.SessionMap) session).invalidate(); } catch (IllegalStateException e) { log.error("Session Invalidate Failed ", e); } } result = "sessionDuplicated"; } else { result= invocation.invoke(); session.put("PREV_CLASS_NAME", className); } } else if(className.indexOf("widgets") !=-1) { result= invocation.invoke(); } else if(className.indexOf("ActionSupport") !=-1) { result= invocation.invoke(); } else if (!(className.indexOf("IRLoginAction")!=-1) &amp;&amp; (user ==null || org==null || simplyApp==null)) { result = "sessionExpired"; } return result; } </code></pre> <p><strong>INTERCEPTOR 2</strong></p> <pre class="lang-java prettyprint-override"><code> public String intercept(ActionInvocation invocation) throws Exception { String result = null; HttpServletRequest request = ServletActionContext.getRequest(); String className = invocation.getAction().getClass().getName(); try { Map session = invocation.getInvocationContext().getSession(); IRUser user = (IRUser) session.get("user"); IROrgname org = (IROrgname)session.get("currentOrg"); IRAppDetails application = (IRAppDetails)session.get("simplyApp"); if(( user!= null &amp;&amp; user.getAppType()!=0) &amp;&amp; !(className.indexOf("IRLoginAction")!=-1)) { if(hasAccess(user.getAppType(), className)) { result= invocation.invoke(); } else { result = "checkURL"; } } else { result= invocation.invoke(); } } catch (Exception e) { e.printStackTrace(); } return result; } </code></pre>
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    1. USAndrea Ligios
    1. USCool Techie
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    1. COWe'll need to know a lot more about the configuration. What does the interceptor stack look like? How are you performing authentication? What does your web.xml look like (what other filters/servlets are in place)?
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      1. POUser session getting mixed up on tomcat
      1. USQuaternion
 

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