This is a known problem with the current version of VelocityTools: the session is not yet created at the time $session is initialized, and remains null afterwards even if the session is later created.
Try using $request.session instead of just $session if you are sure that the session does exist, or event $request.getSession(true) -which should never fail- otherwise. Claude Le mercredi 28 février 2007 à 18:18 +0000, Townson, Chris a écrit : > Hi, > > We've been experiencing some slightly strange behaviour attempting to access > the session object in the velocity context (i.e. from templates) using > velocity tools 1.3. > > We kept finding that $session was null. > > As part of our attempts to debug the problem, we basically set-up a tiny app > which was an exact mimic of the simple.war example web app (where we found > that $session was working fine). > > The only difference between our minimal app and simple.war was that we used > velocity 1.5beta2 > > We continued to encounter problems in our own minimal application _until_ we > added a toolbox with a session scoped tool. > > This seems very strange as I believe $session should be available regardless > when using VelocityView? > > Has anyone got any ideas as to why we might be experiencing this problem? > > It was noticable that we could not replicate this effect in simple.war (i.e. > commenting/uncommenting the "map tool" there did not affect access to > $session) > > Below is the deployment descriptor, toolbox, and list of jars used to create > our copy of simple.war. > > Cheers, > > Chris > > -- web.xml -- > > <?xml version="1.0" encoding="utf-8"?> > <!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application > 2.2//EN" > "http://java.sun.com/j2ee/dtds/web-app_2_2.dtd";> > <web-app> > > <servlet> > <servlet-name>velocity</servlet-name> > > <servlet-class>org.apache.velocity.tools.view.servlet.VelocityViewServlet</servlet-class> > </servlet> > > <servlet-mapping> > <servlet-name>velocity</servlet-name> > <url-pattern>*.vm</url-pattern> > </servlet-mapping> > > <welcome-file-list> > <welcome-file>index.vm</welcome-file> > </welcome-file-list> > > </web-app> > > > -- toolbox.xml -- > > <?xml version="1.0"?> > <toolbox> > <xhtml>true</xhtml> > <data type="number"> > <key>velocityVersion</key> > <value>1.5</value> > </data> > <data type="number"> > <key>velocityToolsVersion</key> > <value>1.3</value> > </data> > <data type="boolean"> > <key>booleanTestValue</key> > <value>true</value> > </data> > <data type="string"> > <key>applicationName</key> > <value>Lenin 0.1-alpha</value> > </data> > <!-- > If you comment/uncomment the map tool, > access to $session should toggle off/on > --> > <tool> > <key>map</key> > <scope>session</scope> > <class>java.util.HashMap</class> > </tool> > <tool> > <key>date</key> > <scope>application</scope> > <class>org.apache.velocity.tools.generic.DateTool</class> > </tool> > </toolbox> > > -- jars -- > > commons-beanutils-1.7.0 > commons-collections-3.2 > commons-digester-1.8 > commons-lang-2.2 > commons-logging-1.1 > oro-2.0.8 > velocity-1.5beta2 > velocity-tools-view-1.3 > > ******************************************************************************** > > DISCLAIMER: This e-mail is confidential and should not be used by anyone who > is > not the original intended recipient. If you have received this e-mail in error > please inform the sender and delete it from your mailbox or any other storage > mechanism. Neither Macmillan Publishers Limited nor any of its agents accept > liability for any statements made which are clearly the sender's own and not > expressly made on behalf of Macmillan Publishers Limited or one of its agents. > Please note that neither Macmillan Publishers Limited nor any of its agents > accept any responsibility for viruses that may be contained in this e-mail or > its attachments and it is your responsibility to scan the e-mail and > attachments (if any). No contracts may be concluded on behalf of Macmillan > Publishers Limited or its agents by means of e-mail communication. Macmillan > Publishers Limited Registered in England and Wales with registered number > 785998 > Registered Office Brunel Road, Houndmills, Basingstoke RG21 6XS > ******************************************************************************** --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
