MySQL CMP problem
I am using jboss-3.2.1_tomcat-4.1.24
I have set mysql-ds.xml as follow:
<jndi-name>MySqlDS</jndi-name>
<connection-url>jdbc:mysql://localhost:3306/mydb
</connection-url>
<driver-class>org.gjt.mm.mysql.Driver</driver-class>
and I have set jbosscmp-jdbc.xml as follow:
java:/MySqlDS
<datasource-mapping>mySQL</datasource-mapping>
My ejb-jar.xml and jboss.xml is ok and I deploy the ear file successfully.
I can access mysql database when I use servlet to test it.
But when I use servlet with JBoss, the JBoss console show the following exception.
13:57:59,145 ERROR [LogInterceptor] RuntimeException:
java.lang.NullPointerException
at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager.createBeanClassInstan
ce(JDBCStoreManager.java:555)
at org.jboss.ejb.plugins.CMPPersistenceManager.createBeanClassInstance(C
MPPersistenceManager.java:137)
at org.jboss.ejb.EntityContainer.createBeanClassInstance(EntityContainer
.java:226)
at org.jboss.ejb.plugins.AbstractInstancePool.get(AbstractInstancePool.j
ava:146)
at org.jboss.ejb.plugins.EntityInstanceInterceptor.invokeHome(EntityInst
anceInterceptor.java:79)
at org.jboss.ejb.plugins.EntityLockInterceptor.invokeHome(EntityLockInte
rceptor.java:61)
at org.jboss.ejb.plugins.EntityCreationInterceptor.invokeHome(EntityCrea
tionInterceptor.java:28)
at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInte
rceptor.java:88)
at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxIntercep
torCMT.java:243)
at org.jboss.ejb.plugins.TxInterceptorCMT.invokeHome(TxInterceptorCMT.ja
va:74)
at org.jboss.ejb.plugins.SecurityInterceptor.invokeHome(SecurityIntercep
tor.java:92)
at org.jboss.ejb.plugins.LogInterceptor.invokeHome(LogInterceptor.java:1
20)
at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invokeHome(ProxyF
actoryFinderInterceptor.java:93)
at org.jboss.ejb.EntityContainer.internalInvokeHome(EntityContainer.java
:477)
at org.jboss.ejb.Container.invoke(Container.java:694)
at sun.reflect.GeneratedMethodAccessor120.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at org.jboss.mx.capability.ReflectedMBeanDispatcher.invoke(ReflectedMBea
nDispatcher.java:284)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:549)
at org.jboss.invocation.local.LocalInvoker.invoke(LocalInvoker.java:101)
at org.jboss.invocation.InvokerInterceptor.invoke(InvokerInterceptor.jav
a:83)
at org.jboss.proxy.TransactionInterceptor.invoke(TransactionInterceptor.
java:46)
at org.jboss.proxy.SecurityInterceptor.invoke(SecurityInterceptor.java:4
5)
at org.jboss.proxy.ejb.HomeInterceptor.invoke(HomeInterceptor.java:173)
at org.jboss.proxy.ClientContainer.invoke(ClientContainer.java:85)
at $Proxy54.create(Unknown Source)
at fyp.entity.UserServlet.doGet(UserServlet.java:47)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(Appl
icationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationF
ilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperV
alve.java:256)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextV
alve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.CertificatesValve.invoke(CertificatesValve
.java:246)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:
2415)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.j
ava:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatche
rValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.j
ava:172)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:
509)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineVal
ve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContex
t.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.jav
a:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:22
3)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java
:594)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.proce
ssConnection(Http11Protocol.java:392)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java
:565)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadP
ool.java:619)
at java.lang.Thread.run(Thread.java:536)
13:57:59,215 ERROR [STDERR] java.rmi.ServerException: RuntimeException; nested e
xception is:
java.lang.NullPointerException
13:57:59,215 ERROR [STDERR] at org.jboss.ejb.plugins.LogInterceptor.handleEx
ception(LogInterceptor.java:360)
13:57:59,215 ERROR [STDERR] at org.jboss.ejb.plugins.LogInterceptor.invokeHo
me(LogInterceptor.java:124)
13:57:59,215 ERROR [STDERR] at org.jboss.ejb.plugins.ProxyFactoryFinderInter
ceptor.invokeHome(ProxyFactoryFinderInterceptor.java:93)
13:57:59,215 ERROR [STDERR] at org.jboss.ejb.EntityContainer.internalInvokeH
ome(EntityContainer.java:477)
13:57:59,215 ERROR [STDERR] at org.jboss.ejb.Container.invoke(Container.java
:694)
13:57:59,215 ERROR [STDERR] at sun.reflect.GeneratedMethodAccessor120.invoke
(Unknown Source)
13:57:59,215 ERROR [STDERR] at sun.reflect.DelegatingMethodAccessorImpl.invo
ke(DelegatingMethodAccessorImpl.java:25)
13:57:59,215 ERROR [STDERR] at java.lang.reflect.Method.invoke(Method.java:3
24)
13:57:59,225 ERROR [STDERR] at org.jboss.mx.capability.ReflectedMBeanDispatc
her.invoke(ReflectedMBeanDispatcher.java:284)
13:57:59,225 ERROR [STDERR] at org.jboss.mx.server.MBeanServerImpl.invoke(MB
eanServerImpl.java:549)
13:57:59,235 ERROR [STDERR] at org.jboss.invocation.local.LocalInvoker.invok
e(LocalInvoker.java:101)
13:57:59,235 ERROR [STDERR] at org.jboss.invocation.InvokerInterceptor.invok
e(InvokerInterceptor.java:83)
13:57:59,235 ERROR [STDERR] at org.jboss.proxy.TransactionInterceptor.invoke
(TransactionInterceptor.java:46)
13:57:59,235 ERROR [STDERR] at org.jboss.proxy.SecurityInterceptor.invoke(Se
curityInterceptor.java:45)
13:57:59,245 ERROR [STDERR] at org.jboss.proxy.ejb.HomeInterceptor.invoke(Ho
meInterceptor.java:173)
13:57:59,245 ERROR [STDERR] at org.jboss.proxy.ClientContainer.invoke(Client
Container.java:85)
13:57:59,245 ERROR [STDERR] at $Proxy54.create(Unknown Source)
13:57:59,245 ERROR [STDERR] at fyp.entity.UserServlet.doGet(UserServlet.java
:47)
13:57:59,245 ERROR [STDERR] at javax.servlet.http.HttpServlet.service(HttpSe
rvlet.java:740)
13:57:59,245 ERROR [STDERR] at javax.servlet.http.HttpServlet.service(HttpSe
rvlet.java:853)
13:57:59,245 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterCha
in.internalDoFilter(ApplicationFilterChain.java:247)
13:57:59,245 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterCha
in.doFilter(ApplicationFilterChain.java:193)
13:57:59,245 ERROR [STDERR] at org.apache.catalina.core.StandardWrapperValve
.invoke(StandardWrapperValve.java:256)
13:57:59,245 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline$Sta
ndardPipelineValveContext.invokeNext(StandardPipeline.java:643)
13:57:59,255 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline.inv
oke(StandardPipeline.java:480)
13:57:59,255 ERROR [STDERR] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
13:57:59,255 ERROR [STDERR] at org.apache.catalina.core.StandardContextValve
.invoke(StandardContextValve.java:191)
13:57:59,255 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline$Sta
ndardPipelineValveContext.invokeNext(StandardPipeline.java:643)
13:57:59,255 ERROR [STDERR] at org.apache.catalina.valves.CertificatesValve.
invoke(CertificatesValve.java:246)
13:57:59,255 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline$Sta
ndardPipelineValveContext.invokeNext(StandardPipeline.java:641)
13:57:59,255 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline.inv
oke(StandardPipeline.java:480)
13:57:59,255 ERROR [STDERR] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
13:57:59,255 ERROR [STDERR] at org.apache.catalina.core.StandardContext.invo
ke(StandardContext.java:2415)
13:57:59,265 ERROR [STDERR] at org.apache.catalina.core.StandardHostValve.in
voke(StandardHostValve.java:180)
13:57:59,265 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline$Sta
ndardPipelineValveContext.invokeNext(StandardPipeline.java:643)
13:57:59,265 ERROR [STDERR] at org.apache.catalina.valves.ErrorDispatcherVal
ve.invoke(ErrorDispatcherValve.java:171)
13:57:59,265 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline$Sta
ndardPipelineValveContext.invokeNext(StandardPipeline.java:641)
13:57:59,265 ERROR [STDERR] at org.apache.catalina.valves.ErrorReportValve.i
nvoke(ErrorReportValve.java:172)
13:57:59,265 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline$Sta
ndardPipelineValveContext.invokeNext(StandardPipeline.java:641)
13:57:59,265 ERROR [STDERR] at org.apache.catalina.valves.AccessLogValve.inv
oke(AccessLogValve.java:509)
13:57:59,275 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline$Sta
ndardPipelineValveContext.invokeNext(StandardPipeline.java:641)
13:57:59,275 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline.inv
oke(StandardPipeline.java:480)
13:57:59,275 ERROR [STDERR] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
13:57:59,275 ERROR [STDERR] at org.apache.catalina.core.StandardEngineValve.
invoke(StandardEngineValve.java:174)
13:57:59,275 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline$Sta
ndardPipelineValveContext.invokeNext(StandardPipeline.java:643)
13:57:59,275 ERROR [STDERR] at org.apache.catalina.core.StandardPipeline.inv
oke(StandardPipeline.java:480)
13:57:59,275 ERROR [STDERR] at org.apache.catalina.core.ContainerBase.invoke
(ContainerBase.java:995)
13:57:59,275 ERROR [STDERR] at org.apache.coyote.tomcat4.CoyoteAdapter.servi
ce(CoyoteAdapter.java:223)
13:57:59,285 ERROR [STDERR] at org.apache.coyote.http11.Http11Processor.proc
ess(Http11Processor.java:594)
13:57:59,285 ERROR [STDERR] at org.apache.coyote.http11.Http11Protocol$Http1
1ConnectionHandler.processConnection(Http11Protocol.java:392)
13:57:59,285 ERROR [STDERR] at org.apache.tomcat.util.net.TcpWorkerThread.ru
nIt(PoolTcpEndpoint.java:565)
13:57:59,285 ERROR [STDERR] at org.apache.tomcat.util.threads.ThreadPool$Con
trolRunnable.run(ThreadPool.java:619)
13:57:59,285 ERROR [STDERR] at java.lang.Thread.run(Thread.java:536)
13:57:59,285 ERROR [STDERR] Caused by: java.lang.NullPointerException
13:57:59,285 ERROR [STDERR] at org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManag
er.createBeanClassInstance(JDBCStoreManager.java:555)
13:57:59,285 ERROR [STDERR] at org.jboss.ejb.plugins.CMPPersistenceManager.c
reateBeanClassInstance(CMPPersistenceManager.java:137)
13:57:59,285 ERROR [STDERR] at org.jboss.ejb.EntityContainer.createBeanClass
Instance(EntityContainer.java:226)
13:57:59,295 ERROR [STDERR] at org.jboss.ejb.plugins.AbstractInstancePool.ge
t(AbstractInstancePool.java:146)
13:57:59,295 ERROR [STDERR] at org.jboss.ejb.plugins.EntityInstanceIntercept
or.invokeHome(EntityInstanceInterceptor.java:79)
13:57:59,295 ERROR [STDERR] at org.jboss.ejb.plugins.EntityLockInterceptor.i
nvokeHome(EntityLockInterceptor.java:61)
13:57:59,295 ERROR [STDERR] at org.jboss.ejb.plugins.EntityCreationIntercept
or.invokeHome(EntityCreationInterceptor.java:28)
13:57:59,295 ERROR [STDERR] at org.jboss.ejb.plugins.AbstractTxInterceptor.i
nvokeNext(AbstractTxInterceptor.java:88)
13:57:59,295 ERROR [STDERR] at org.jboss.ejb.plugins.TxInterceptorCMT.runWit
hTransactions(TxInterceptorCMT.java:243)
13:57:59,295 ERROR [STDERR] at org.jboss.ejb.plugins.TxInterceptorCMT.invoke
Home(TxInterceptorCMT.java:74)
13:57:59,295 ERROR [STDERR] at org.jboss.ejb.plugins.SecurityInterceptor.inv
okeHome(SecurityInterceptor.java:92)
13:57:59,295 ERROR [STDERR] at org.jboss.ejb.plugins.LogInterceptor.invokeHo
me(LogInterceptor.java:120)
13:57:59,295 ERROR [STDERR] ... 51 more
Anyone can tell me what is the problem?
Thank You Very Much!