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1. Re: How can I use seam transaction in servlet
hantsy Feb 25, 2012 10:38 PM (in response to jiajiefeng)How do you produces the EntityManager..?
I created another none Conversation scoped EntityManager producor, it worked well.
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2. Re: How can I use seam transaction in servlet
jiajiefeng Feb 26, 2012 1:55 AM (in response to jiajiefeng)public class EntityManagerProducer
{
@ExtensionManaged
@Produces
@PersistenceUnit(unitName="jpa")
@ConversationScoped
EntityManagerFactory emf;
}
@Inject
EntityManager em;
em.persist(user);
em.flush();
java.lang.reflect.UndeclaredThrowableException
at $Proxy87.flush(Unknown Source)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.jboss.weld.bean.proxy.AbstractBeanInstance.invoke(AbstractBeanInstance.java:44)
at org.jboss.weld.bean.proxy.ProxyMethodHandler.invoke(ProxyMethodHandler.java:105)
at org.jboss.weld.proxies.EntityManager$ManagedPersistenceContext$-1598289256$Proxy$_$$_WeldClientProxy.flush(EntityManager$ManagedPersistenceContext$-1598289256$Proxy$_$$_WeldClientProxy.java)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.jboss.solder.servlet.exception.CatchExceptionFilter.doFilter(CatchExceptionFilter.java:65)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.jboss.solder.servlet.event.ServletEventBridgeFilter.doFilter(ServletEventBridgeFilter.java:74)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.ocpsoft.pretty.PrettyFilter.doFilter(PrettyFilter.java:126)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:405)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:964)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:515)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:304)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603)
at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.jboss.seam.persistence.PersistenceContextProxyHandler.invoke(PersistenceContextProxyHandler.java:56)
at org.jboss.seam.persistence.ManagedPersistenceContextProxyHandler.invoke(ManagedPersistenceContextProxyHandler.java:108)
... 36 more
Caused by: javax.persistence.TransactionRequiredException: no transaction is in progress
at org.hibernate.ejb.AbstractEntityManagerImpl.flush(AbstractEntityManagerImpl.java:971)
... 42 more
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3. Re: How can I use seam transaction in servlet
jiajiefeng Feb 26, 2012 2:00 AM (in response to jiajiefeng)because entityManger is @ConversationScoped so in servlet active the conversation context
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException{
HttpConversationContext conversationContext = Container.instance()
.deploymentManager().instance()
.select(HttpConversationContext.class).get();
conversationContext.associate(request);
conversationContext.activate();
conversationContext.getCurrentConversation().begin();
...
em.persist(uf);
em.flush();
...
conversationContext.getCurrentConversation().end();
conversationContext.deactivate();
}
when I persist a bean I got
: javax.persistence.TransactionRequiredException: no transaction is in progress
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4. Re: How can I use seam transaction in servlet
hantsy Feb 26, 2012 3:12 AM (in response to jiajiefeng)I added another producer in my project, it worked well.
@Produces
@PersistenceContext
@Utility
EntityManager em;
use the following
@Inject
@Utility
EntityManager em
to enject EntityManager in servlet codes.
Utility is a custom @Qualifiar ...