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How can it happen every time I run the project? I find the zkplus.jar in the WEB-INF/lib directory. But error information seems that as if the file does not exist, but it does.
24-Mar-2010 23:00:04 org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: {Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.j2ee.server:canvas_demo' did not find a matching property.
24-Mar-2010 23:00:04 org.apache.tomcat.util.digester.SetPropertiesRule begin
WARNING: {Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.j2ee.server:DERI' did not find a matching property.
24-Mar-2010 23:00:04 org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre6\bin;.;C:\WINDOWS\Sun\Java\bin;C:\WINDOWS\system32;C:\WINDOWS;C:/Program Files/Java/jre6/bin/client;C:/Program Files/Java/jre6/bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\Program Files\Diskeeper Corporation\Diskeeper\;C:\Program Files\ThinkPad\ConnectUtilities;C:\Program Files\Common Files\Lenovo;C:\Program Files\Lenovo\Client Security Solution;C:\Program Files\Common Files\Thunder Network\KanKan\Codecs;C:\Program Files\MySQL\MySQL Server 5.0\bin;C:\Program Files\Java\jdk1.6.0_20\bin;C:\Program Files\Java\jdk1.6.0_20\jre\bin;
24-Mar-2010 23:00:04 org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on http-8080
24-Mar-2010 23:00:04 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 434 ms
24-Mar-2010 23:00:04 org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
24-Mar-2010 23:00:04 org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/6.0.20
24-Mar-2010 23:00:05 org.zkoss.zk.ui.http.WebManager <init>:112
INFO: Starting ZK 3.6.3 Enterprise (build: 09110309)
24-Mar-2010 23:00:05 org.zkoss.zk.ui.sys.ConfigParser parseConfigXml:127
INFO: Loading system default
24-Mar-2010 23:00:05 org.zkoss.zk.ui.sys.ConfigParser parse:224
INFO: Parsing jndi:/localhost/DERI/WEB-INF/zk.xml
24-Mar-2010 23:00:06 org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on http-8080
24-Mar-2010 23:00:06 org.apache.jk.common.ChannelSocket init
INFO: JK: ajp13 listening on /0.0.0.0:8009
24-Mar-2010 23:00:06 org.apache.jk.server.JkMain start
INFO: Jk running ID=0 time=0/47 config=null
24-Mar-2010 23:00:06 org.apache.catalina.startup.Catalina start
INFO: Server startup in 1940 ms
24-Mar-2010 23:00:07 org.zkoss.zk.ui.util.Configuration invokeExecutionCleanups:845
SEVERE: Failed to invoke class org.zkoss.zkplus.hibernate.HibernateSessionContextListener
java.lang.NoClassDefFoundError: javax/transaction/Synchronization
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.zkoss.lang.Classes.forNameByThread(Classes.java:199)
at org.zkoss.zkplus.util.ThreadLocals.getThreadLocal(ThreadLocals.java:38)
at org.zkoss.zkplus.hibernate.HibernateSessionContextListener.getContextThreadLocal(HibernateSessionContextListener.java:152)
at org.zkoss.zkplus.hibernate.HibernateSessionContextListener.getSessionMap(HibernateSessionContextListener.java:148)
at org.zkoss.zkplus.hibernate.HibernateSessionContextListener.cleanup(HibernateSessionContextListener.java:98)
at org.zkoss.zk.ui.util.Configuration.invokeExecutionCleanups(Configuration.java:842)
at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage0(UiEngineImpl.java:438)
at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage(UiEngineImpl.java:299)
at org.zkoss.zk.ui.http.DHtmlLayoutServlet.process(DHtmlLayoutServlet.java:229)
at org.zkoss.zk.ui.http.DHtmlLayoutServlet.doGet(DHtmlLayoutServlet.java:165)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: javax.transaction.Synchronization
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
... 26 more
24-Mar-2010 23:00:07 org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet zkLoader threw exception
java.lang.ClassNotFoundException: javax.transaction.Synchronization
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1387)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1233)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at org.zkoss.lang.Classes.forNameByThread(Classes.java:199)
at org.zkoss.zkplus.util.ThreadLocals.getThreadLocal(ThreadLocals.java:38)
at org.zkoss.zkplus.hibernate.HibernateSessionContextListener.getContextThreadLocal(HibernateSessionContextListener.java:152)
at org.zkoss.zkplus.hibernate.HibernateSessionContextListener.getSessionMap(HibernateSessionContextListener.java:148)
at org.zkoss.zkplus.hibernate.HibernateSessionContextListener.init(HibernateSessionContextListener.java:79)
at org.zkoss.zk.ui.util.Configuration.invokeExecutionInits(Configuration.java:812)
at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage0(UiEngineImpl.java:346)
at org.zkoss.zk.ui.impl.UiEngineImpl.execNewPage(UiEngineImpl.java:299)
at org.zkoss.zk.ui.http.DHtmlLayoutServlet.process(DHtmlLayoutServlet.java:229)
at org.zkoss.zk.ui.http.DHtmlLayoutServlet.doGet(DHtmlLayoutServlet.java:165)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
at java.lang.Thread.run(Unknown Source)
***************************My zk.xml file is like this:***************************
<?xml version="1.0" encoding="UTF-8"?>
<zk>
<listener>
<description>Hibernate thread session context handler</description>
<listener-class>org.zkoss.zkplus.hibernate.HibernateSessionContextListener</listener-class>
</listener>
<device-config>
<device-type>ajax</device-type>
<timeout-uri>/timeout.zul</timeout-uri><!-- An empty URL can cause the browser to reload the same URL -->
</device-config>
</zk>
***************************My web.xml file is like this:***************************
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<display-name>DERI</display-name>
<resource-ref>
<res-ref-name>jdbc/deri</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
<listener>
<description>
Used to cleanup when a session is destroyed</description>
<display-name>ZK Session cleaner</display-name>
<listener-class>org.zkoss.zk.ui.http.HttpSessionListener</listener-class>
</listener>
<servlet>
<description>The ZK loader for ZUML pages</description>
<servlet-name>zkLoader</servlet-name>
<servlet-class>
org.zkoss.zk.ui.http.DHtmlLayoutServlet</servlet-class>
<init-param>
<param-name>update-uri</param-name>
<param-value>/zkau</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<description>The asynchronous update engine for ZK</description>
<servlet-name>auEngine</servlet-name>
<servlet-class>
org.zkoss.zk.au.http.DHtmlUpdateServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>zkLoader</servlet-name>
<url-pattern>*.zul</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>zkLoader</servlet-name>
<url-pattern>*.zhtml</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>auEngine</servlet-name>
<url-pattern>/zkau/*</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
<welcome-file>index.zul</welcome-file>
</welcome-file-list>
</web-app>
***************************My connection pool configuration is like this:***************************
<Resource auth="Container"
url="jdbc:mysql://localhost:3306/deri"
driverClassName="com.mysql.jdbc.Driver"
name="jdbc/deri"
maxActive="30" maxIdle="20" maxWait="3000"
username="****" password="****i"
timeBetweenEvictionRunsMillis="60000"
type="javax.sql.DataSource"
defaultAutoCommit="false" />
When I delete the codes in zk.xml
"
<listener>
<description>Hibernate thread session context handler</description>
<listener-class>org.zkoss.zkplus.hibernate.HibernateSessionContextListener</listener-class>
</listener>
"
then there is no problem with the tomcat, but I don't know if it will affect the hibernate performance's correctness.
Can anyone help me with the problem?? I really appreciate it. ^_^
The key to the whole thing is this part of the stack trace:
Caused by: java.lang.ClassNotFoundException: javax.transaction.Synchronization
ClassNotFoundException is always a classpath issue. This is one of the worst named exceptions in all of Java, According To Cary(tm). Have you checked to see if you have jtaXXXX.jar in Tomcat's app server directories AND your project's WEB-INF/lib? It looks like you might have it in both places and that would cause problems.
I have the same problem... help will be highly appreciated.
@schofeild26, yuanbohan
If you don't have such jar containing such class, it will report class not found.
The tricky part is,
If class file is defined more than once in the classpath. It still will report class not found exception.
It's environmental setup problem.
You must try to find it yourself.
Asked: 2010-03-24 18:11:51 +0800
Seen: 1,112 times
Last updated: May 20 '10