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fix for: https://issues.apache.org/jira/browse/AMQ-3776 

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1302883 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Timothy A. Bish 2012-03-20 13:36:10 +00:00
parent f2867cffcb
commit f32792a9fc
1 changed files with 11 additions and 4 deletions
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15
activemq-web/src/main/java/org/apache/activemq/web/MessageListenerServlet.java
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@ -19,7 +19,13 @@ package org.apache.activemq.web;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.util.*;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Timer;
import java.util.TimerTask;
import javax.jms.Destination;
import javax.jms.JMSException;
@ -34,10 +40,10 @@ import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.activemq.MessageAvailableConsumer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.eclipse.jetty.continuation.Continuation;
import org.eclipse.jetty.continuation.ContinuationSupport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* A servlet for sending and receiving messages to/from JMS destinations using
@ -436,8 +442,9 @@ public class MessageListenerServlet extends MessageServletSupport {
}
String sessionKey = session.getId() + '-' + clientId;
AjaxWebClient client = ajaxWebClients.get( sessionKey );
AjaxWebClient client = null;
synchronized (ajaxWebClients) {
client = ajaxWebClients.get( sessionKey );
// create a new AjaxWebClient if one does not already exist for this sessionKey.
if( client == null ) {
if (LOG.isDebugEnabled()) {