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ETag
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created by <a href="http://community.jboss.org/people/smart_umesh_123">Umesh Pathak</a> in <i>JBoss Portal</i> - <a href="http://community.jboss.org/message/585438#585438">View the full discussion</a>
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<div class="jive-rendered-content"><p>I tried the response.getCacheControl().setUseCachedContent(true). but it does not work.</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Here is my portlet class</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>- </p><p>package com.mycompany.frs.portlet; </p><p>public class CacheDemo extends GenericPortlet </p><p>{  </p><p>public void doView(RenderRequest request, RenderResponse response) throws PortletException, IOException </p><p>{ </p><p>System.out.println("**---- " + this.getClass().getName() + "'s doView is started"); </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>if (request.getETag() != null) </p><p>{ </p><p>if (request.getETag().startsWith("MY_ETAG")) </p><p>{ </p><p>System.out.println("/////// MARKUP IS VALID"); </p><p>response.getCacheControl().setExpirationTime(30); </p><p>response.getCacheControl().setUseCachedContent(true); </p><p>return; </p><p>} </p><p>} </p><p>else </p><p>{ </p><p>response.getCacheControl().setETag("MY_ETAG" + (new Date())); </p><p>response.getCacheControl().setExpirationTime(30); </p><p>PortletRequestDispatcher dispatcher = getPortletContext().getRequestDispatcher("/WEB-INF/CacheDemo.jsp"); </p><p>dispatcher.include(request, response); </p><p>} </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>}  </p><p>} </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><strong>portlet.xml =</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><portlet> </p><p>        <description>CacheDemo</description></p><p>        <portlet-name>CacheDemo</portlet-name></p><p>         <display-name>CacheDemo</display-name></p><p>         <portlet-class>com.mycompany.frs.portlet.CacheDemo</portlet-class>       </p><p>         <supports></p><p>             <mime-type>text/html</mime-type></p><p>             <portlet-mode>VIEW</portlet-mode></p><p>         </supports></p><p>         <supports></p><p>             <mime-type>text/html</mime-type></p><p>             <portlet-mode>EDIT</portlet-mode></p><p>         </supports></p><p>         <supports></p><p>             <mime-type>text/html</mime-type></p><p>             <portlet-mode>HELP</portlet-mode></p><p>         </supports></p><p>         <portlet-info></p><p>             <title>CacheDemo</title></p><p>             <short-title>CacheDemo</short-title></p><p>         </portlet-info></p><p>         <expiration-cache>30</expiration-cache>           </p><p>     </portlet></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><strong>CacheDemo.jsp</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><%@page import="java.util.Date"%></p><p> <H1> Hello Friends, I am cached contents !! </H1></p><p> <%= new Date() %></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p><strong>Platform </strong>: Jboss Portal 2.7.2 </p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p> <strong>Problem :</strong></p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>When I refresh the page after 30 seconds, the portlet vanishes from the Portal page.</p><p> When I again refresh the page immediately, the portlet appears, with the cached contents. That is, it does not show the current date</p><p>-----------------</p><p>Thanks</p><p style="min-height: 8pt; height: 8pt; padding: 0px;"> </p><p>Umesh Pathak</p></div>
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<p style="margin: 0;">Reply to this message by <a href="http://community.jboss.org/message/585438#585438">going to Community</a></p>
<p style="margin: 0;">Start a new discussion in JBoss Portal at <a href="http://community.jboss.org/choose-container!input.jspa?contentType=1&containerType=14&container=2011">Community</a></p>
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