[jboss-user] [JBoss Seam] - Servlets in long running conversations
burtoncarl
do-not-reply at jboss.com
Sun Jan 13 21:37:59 EST 2008
I'm trying to access objects from a long running conversation from withing a servlet. I haven't had much sucess though. So I've created a very simple servlet to simply access a conversation. Throughout my app seam adds "cid" for the conversation id in the parameters list. although for my testing I have been adding both cid and conversationId to the request.
I've tried adding
<web:context-filter url-pattern="/servlet/*" />
to components.xml and/or
| <filter>
| <filter-name>Seam Servlet Filter</filter-name>
| <filter-class>org.jboss.seam.servlet.SeamServletFilter</filter-class>
| </filter>
| <filter-mapping>
| <filter-name>Seam Servlet Filter</filter-name>
| <url-pattern>/servlet/*</url-pattern>
| </filter-mapping>
|
to the web.xml, both met with failure. I am able to access objects with Component.getInstance("someName"), but not within my conversation.
Here are the bits of code I am able to share.
web.xml
| <?xml version="1.0" encoding="UTF-8"?>
| <web-app xmlns="http://java.sun.com/xml/ns/javaee"
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
| xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
| http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
| version="2.5">
| <!-- Ajax4jsf setup -->
|
| <filter>
| <display-name>RichFaces Filter</display-name>
| <filter-name>richfaces</filter-name>
| <filter-class>org.ajax4jsf.Filter</filter-class>
| </filter>
|
|
| <filter-mapping>
| <filter-name>richfaces</filter-name>
| <servlet-name>Faces Servlet</servlet-name>
| <dispatcher>REQUEST</dispatcher>
| <dispatcher>FORWARD</dispatcher>
| <dispatcher>INCLUDE</dispatcher>
| </filter-mapping>
|
| <context-param>
| <param-name>org.ajax4jsf.VIEW_HANDLERS</param-name>
| <param-value>org.jboss.seam.ui.facelet.SeamFaceletViewHandler</param-value>
| </context-param>
|
| <context-param>
| <param-name>javax.faces.CONFIG_FILES</param-name>
| <param-value>/WEB-INF/navigation.xml</param-value>
| </context-param>
|
| <listener>
| <listener-class>org.jboss.seam.servlet.SeamListener</listener-class>
| </listener>
|
| <context-param>
| <param-name>org.richfaces.SKIN</param-name>
| <param-value>csc2</param-value>
| </context-param>
|
| <context-param>
| <param-name>javax.faces.STATE_SAVING_METHOD</param-name>
| <param-value>client</param-value>
| </context-param>
|
| <context-param>
| <param-name>facelets.DEVELOPMENT</param-name>
| <param-value>true</param-value>
| </context-param>
|
| <context-param>
| <param-name>javax.faces.DEFAULT_SUFFIX</param-name>
| <param-value>.xhtml</param-value>
| </context-param>
|
| <context-param>
| <param-name>facelets.SKIP_COMMENTS</param-name>
| <param-value>true</param-value>
| </context-param>
|
| <filter>
| <filter-name>Seam Filter</filter-name>
| <filter-class>org.jboss.seam.web.SeamFilter</filter-class>
| </filter>
|
| <filter-mapping>
| <filter-name>Seam Filter</filter-name>
| <url-pattern>/*</url-pattern>
| </filter-mapping>
|
| <!--
| <filter>
| <filter-name>Seam Context Filter</filter-name>
| <filter-class>org.jboss.seam.web.ContextFilter</filter-class>
| </filter>
| <filter-mapping>
| <filter-name>Seam Context Filter</filter-name>
| <url-pattern>/servlet/*</url-pattern>
| </filter-mapping>
|
| <filter>
| <filter-name>Seam Multipart Filter</filter-name>
| <filter-class>org.jboss.seam.web.MultipartFilter</filter-class>
| </filter>
|
| <filter-mapping>
| <filter-name>Seam Multipart Filter</filter-name>
| <url-pattern>*.xhtml</url-pattern>
| </filter-mapping>
| -->
|
| <servlet>
| <servlet-name>Faces Servlet</servlet-name>
| <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
| <load-on-startup>1</load-on-startup>
| </servlet>
| <servlet-mapping>
| <servlet-name>Faces Servlet</servlet-name>
| <url-pattern>*.htm</url-pattern>
| </servlet-mapping>
|
| <!--
| <filter>
| <filter-name>Seam Servlet Filter</filter-name>
| <filter-class>org.jboss.seam.servlet.SeamServletFilter</filter-class>
| </filter>
| <filter-mapping>
| <filter-name>Seam Servlet Filter</filter-name>
| <url-pattern>/servlet/*</url-pattern>
| </filter-mapping>
| -->
|
|
| <servlet>
| <description>For testing conversations within servlet</description>
| <display-name>ConversationTestServlet</display-name>
| <servlet-name>ConversationTestServlet</servlet-name>
| <servlet-class>com.gdi.csc.servlet.ConversationTestServlet</servlet-class>
| <load-on-startup>3</load-on-startup>
| </servlet>
| <servlet-mapping>
| <servlet-name>ConversationTestServlet</servlet-name>
| <url-pattern>/servlet/conversation</url-pattern>
| </servlet-mapping>
|
| <security-constraint> <!-- This stops the user from replacing the .htm extensino with .xhtml to read the source files... -->
| <display-name>Restrict XHTML Documents</display-name>
| <web-resource-collection>
| <web-resource-name>XHTML</web-resource-name>
| <url-pattern>*.xhtml</url-pattern>
| </web-resource-collection>
| <auth-constraint>
| <role-name>NONE</role-name>
| </auth-constraint>
| </security-constraint>
|
| <session-config>
| <session-timeout>30</session-timeout>
| </session-config>
|
| <!--
| <error-page>
| <error-code>404</error-code>
| <location>/home.htm</location>
| </error-page>
| -->
| </web-app>
|
components.xml
| <?xml version="1.0" encoding="UTF-8"?>
| <components xmlns="http://jboss.com/products/seam/components"
| xmlns:core="http://jboss.com/products/seam/core"
| xmlns:security="http://jboss.com/products/seam/security"
| xmlns:framework="http://jboss.com/products/seam/framework"
| xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
| xmlns:web="http://jboss.com/products/seam/web"
| xmlns:mail="http://jboss.com/products/seam/mail"
| xsi:schemaLocation=
| "http://jboss.com/products/seam/core http://jboss.com/products/seam/core-1.2.xsd
| http://jboss.com/products/seam/security http://jboss.com/products/seam/security-1.2.xsd
| http://jboss.com/products/seam/framework http://jboss.com/products/seam/framework-1.2.xsd
| http://jboss.com/products/seam/components http://jboss.com/products/seam/components-1.2.xsd
| http://jboss.com/products/seam/web http://jboss.com/products/seam/web-1.2.xsd"
| >
|
| <core:init debug="true" jndi-pattern="#{ejbName}/local"/>
|
| <!-- 120 second conversation timeout -->
| <core:manager conversation-timeout="120000"
| concurrent-request-timeout="1000"
| conversation-id-parameter="cid"
| conversation-is-long-running-parameter="clr"/>
|
| <!--
| <core:jbpm>
| <core:process-definitions>
| <value>ordermanagement1.jpdl.xml</value>
| </core:process-definitions>
| <core:pageflow-definitions>
| <value>checkout.jpdl.xml</value>
| <value>newuser.jpdl.xml</value>
| </core:pageflow-definitions>
| </core:jbpm>
| -->
| <core:ejb installed="true"/>
|
| <!-- <core:microcontainer installed="true"/> -->
|
| <security:identity authenticate-method="#{csc2authenticator.authenticate}"/>
| <event type="org.jboss.seam.notLoggedIn">
| <action expression="#{redirect.captureCurrentView}"/>
| </event>
|
| <event type="org.jboss.seam.postAuthenticate">
| <action expression="#{redirect.returnToCapturedView}"/>
| </event>
|
|
| <core:managed-persistence-context name="entityManager"
| auto-create="true"
| persistence-unit-jndi-name="java:/myEntityFactory" />
|
| <!--factory for "session" property used to have an ability
| to inject Hibernate session object directly in the
| @In Session session;-->
| <factory name="session" auto-create="true" scope="STATELESS"
| value="#{entityManager.delegate}"/>
|
| <!-- Conversation propagation with redirects -->
| <web:redirect-filter url-pattern="*.htm"/>
|
| <!-- Context management for custom servlets -->
| <web:context-filter url-pattern="/servlet/*" />
|
|
| <!--To enable file upload capability
| max-request-size - maximum file size in bytes
| -->
| <web:multipart-filter auto-create="true"
| class="org.jboss.seam.web.MultipartFilter" max-request-size="4000000"
| url-pattern="*.htm"/>
|
| <!-- Mail session component-->
| <mail:mail-session scope="application"
| host="#{applicationProperties.smtpHost}"
| port="#{applicationProperties.smtpPort}"
| username="#{applicationProperties.smtpUserName}"
| password="#{applicationProperties.smtpPassword}"/>
| <!--
| <component class="org.jboss.seam.web.MultipartFilter">
| <property name="maxRequestSize">4000000</property>
| </component>
| -->
| </components>
|
ConversationTestServlet.java
| /**
| * Copyright 2008 CoActive Marketing Group
| */
| package com.gdi.csc.servlet;
|
| import java.io.IOException;
| import java.util.ArrayList;
| import java.util.Enumeration;
|
| import javax.faces.event.PhaseId;
| import javax.servlet.ServletException;
| import javax.servlet.http.HttpServlet;
| import javax.servlet.http.HttpServletRequest;
| import javax.servlet.http.HttpServletResponse;
| import javax.servlet.http.HttpSession;
|
| import org.apache.log4j.Logger;
| import org.jboss.seam.Component;
| import org.jboss.seam.contexts.ContextAdaptor;
| import org.jboss.seam.contexts.Lifecycle;
| import org.jboss.seam.core.Conversation;
| import org.jboss.seam.core.Manager;
|
| /**
| * @author Burton Hodges
| *
| */
| @SuppressWarnings("serial")
| public class ConversationTestServlet extends HttpServlet {
| private static Logger logger = Logger.getLogger(ThumbServlet.class);
|
| @Override
| protected void doGet(HttpServletRequest request, HttpServletResponse resp)
| throws ServletException, IOException {
| debugRequestParameters(request);
| debugConversation(request);
| }
|
| private void debugConversation(HttpServletRequest request){
| try{
| // HttpSession session = request .getSession(true);
| // Lifecycle.setPhaseId(PhaseId.INVOKE_APPLICATION);
| // Lifecycle.setServletRequest(request);
| // Lifecycle.beginRequest(getServletContext(), session, request);
| // Manager.instance().restoreConversation(request.getParameterMap());
| // Lifecycle.resumeConversation(session);
| // Manager.instance().handleConversationPropagation(request.getParameterMap());
|
| {
| logger.info("debugConversation: trying Component.getInstance(\"conversation\")");
| Object o = Component.getInstance("conversation");
| if(o==null){
| logger.info("debugConversation: Component.getInstance(\"conversation\") returned null");
| }else{
| logger.info("debugConversation: object is instance of "+o.getClass().getName());
| debugConversation(Conversation.class.cast(o));
| }
| }
|
| logger.info("debugConversation: trying Conversation.instance()");
| debugConversation(Conversation.instance());
|
| // Manager.instance().endRequest(ContextAdaptor.getSession(session));
| // Lifecycle.endRequest(session);
|
| }catch (Exception e){
| logger.info("debugConversation: Error occured debuging seam conversation", e);
| }
| }
|
| private void debugConversation(Conversation conversation){
| if(conversation==null){
| logger.info("debugConversation: conversation is null");
| return;
| }
| logger.info("debugConversation: "+conversation);
| logger.info("debugConversation: "+conversation.getId());
| logger.info("debugConversation: "+conversation.getParentId());
| logger.info("debugConversation: "+conversation.getRootId());
| logger.info("debugConversation: "+conversation.getViewId());
| }
|
| @SuppressWarnings("unchecked")
| private void debugRequestParameters(HttpServletRequest request){
| logger.info("debugRequestParameters: Debugging request parameters");
|
| ArrayList<String> keys = new ArrayList<String>();
| Enumeration e = request.getParameterNames();
| while(e.hasMoreElements())
| keys.add(e.nextElement().toString());
| for(String key: keys)
| logger.info("debugRequestParameters: "+key+"="+request.getParameter(key));
| }
|
| }
|
and an excerpt from my log file:
| 2008-01-13 21:18:33,828 [http-8080-Processor25] INFO - debugRequestParameters: Debugging request parameters
| 2008-01-13 21:18:33,828 [http-8080-Processor25] INFO - debugRequestParameters: conversationId=1
| 2008-01-13 21:18:33,828 [http-8080-Processor25] INFO - debugRequestParameters: cid=1
| 2008-01-13 21:18:33,828 [http-8080-Processor25] INFO - debugConversation: trying Component.getInstance("conversation")
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: object is instance of org.jboss.seam.core.Conversation
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: org.jboss.seam.core.Conversation at 2eb6e9
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: 2
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: null
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: 2
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: null
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: trying Conversation.instance()
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: org.jboss.seam.core.Conversation at 2eb6e9
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: 2
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: null
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: 2
| 2008-01-13 21:18:33,843 [http-8080-Processor25] INFO - debugConversation: null
|
Any help would be appreciated!
Thanks in advance.
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