can anyone help me what is happening on jboss server/my client app...? i stuck for last 10
days just for this test. My EJB is deployed on Jboss AS 7.1.1 and client web app is deployed on tomcat 7.0.42.
i follow the following tutorial and set up stateless session bean and my servlet client.
[EJB invocations from a remote client using JNDI]:https://docs.jboss.org/author/display/AS71/EJB+invocations+from+a+remote+client+using+JNDI and
i can access the remote object once but when i refresh the page it gives me the following error:
java.lang.IllegalStateException: No EJB receiver available for handling
[appName:DPlacementEAR,modulename:DPlacementEJB,distinctname:] combination for
invocation context org.jboss.ejb.client.EJBClientInvocationContext@18b5012
at org.jboss.ejb.client.EJBClientContext.requireEJBReceiver(EJBClientContext.java:584)
here is my project structure:
-on Jboss 7.1.1 server i deployed DPlacementEAR, which contains:
-DPlacementEJB which contains entity class Rule and session bean RuleBL and
-DPlacementLib which contains remote interface IRuleBL and DTO RuleDO
-DPlacementUI is a Client web app is deployed on tomcat 7.0.42 server which contains RuleServlet
here are the codes and configs i used:
RuleBL:
@Stateless
@Remote(IRuleBL.class)
public class RuleBL implements IRuleBL{
@PersistenceContext(unitName = "PLACEMENTDB")
private EntityManager entityManager;
@Override
public RuleDO get(int id) {
try {
Rule rule = entityManager.find(Rule.class, id);
RuleDO rdo = new RuleDO();
rdo.setId(rule.getId());
rdo.setCutPoint(rule.getCutPoint());
rdo.setDisabilityPercentage(rule.getDisabilityPercentage());
rdo.setFemalePercentage(rule.getFemalePercentage());
rdo.setTopPercentage(rule.getTopPercentage());
return rdo;
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}
and RuleServlet:
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try{
PrintWriter out = response.getWriter();
IRuleBL rulebl = ObjectLookupFactory.lookupRuleBL();
RuleDO r = rulebl.get(1);
if(r!=null)
out.println("percent: "+ r.getTopPercentage());
else
out.println("null");
}catch(Exception e){
e.printStackTrace();
}
...
public class ObjectLookupFactory {
public static IRuleBL lookupRuleBL(){
Context context = null;
IRuleBL bean = null;
try {
context = JNDILookupClass.getInitialContext();
String appName = "DPlacementEAR";
String moduleName = "DPlacementEJB";
String distinctName = "";
String beanName = "RuleBL";
final String interfaceName = "com.placement.business.IRuleBL";
String name = "ejb:" + appName + "/" + moduleName + "/" + distinctName + "/" + beanName + "!" + interfaceName;
bean = (IRuleBL) context.lookup(name);
} catch (NamingException e) {
e.printStackTrace();
}
return bean;
}
.......
public class JNDILookupClass {
private static Context initialContext;
public static Context getInitialContext() throws NamingException {
if (initialContext == null) {
Properties properties = new Properties();
properties.put(Context.INITIAL_CONTEXT_FACTORY, "org.jboss.naming.remote.client.InitialContextFactory");
properties.put(Context.PROVIDER_URL, "remote://localhost:4447");
properties.put(Context.SECURITY_PRINCIPAL, "appuser");
properties.put(Context.SECURITY_CREDENTIALS, "123"); //
properties.put("jboss.naming.client.ejb.context", true);
properties.put(Context.URL_PKG_PREFIXES, "org.jboss.ejb.client.naming");
initialContext = new InitialContext(properties);
}
return initialContext;
}
}
Jboss deployment:
16:14:52,777 INFO [org.jboss.as.jpa] (MSC service thread 1-8) JBAS011401: Read
persistence.xml for PLACEMENTDB
16:14:52,792 INFO
[org.jboss.as.ejb3.deployment.processors.EjbJndiBindingsDeploymentUnitProcessor] (MSC service thread 1-3) JNDI bindings for session bean named RuleBL in deployment unit subdeployment "DPlacementEJB.jar" of deployment "DPlacementEAR.ear" are as follows:
java:global/DPlacementEAR/DPlacementEJB/RuleBL!com.placement.business.IRuleBL
java:app/DPlacementEJB/RuleBL!com.placement.business.IRuleBL
java:module/RuleBL!com.placement.business.IRuleBL
java:jboss/exported/DPlacementEAR/DPlacementEJB/RuleBL!com.placement.business.IRuleBL
java:global/DPlacementEAR/DPlacementEJB/RuleBL
java:app/DPlacementEJB/RuleBL
java:module/RuleBL
16:14:52,814 INFO [org.jboss.as.jpa] (MSC service thread 1-1) JBAS011402: Starting
Persistence Unit Service 'DPlacementEAR.ear/DPlacementEJB.jar#PLACEMENTDB'
16:14:52,816 INFO [org.hibernate.ejb.Ejb3Configuration] (MSC service thread 1-1)
HHH000204: Processing PersistenceUnitInfo [
name: PLACEMENTDB
...]
After i run DPlacementUI on tomcat 7.042 it gives me
percent:60.0
but when i refresh the page it keeps showing the following error:
java.lang.IllegalStateException: No EJB receiver available for handling
[appName:DPlacementEAR,modulename:DPlacementEJB,distinctname:] combination for invocation
context org.jboss.ejb.client.EJBClientInvocationContext@17c3215
at org.jboss.ejb.client.EJBClientContext.requireEJBReceiver(EJBClientContext.java:584)
at org.jboss.ejb.client.ReceiverInterceptor.handleInvocation(ReceiverInterceptor.java:119)
at org.jboss.ejb.client.EJBClientInvocationContext.sendRequest(EJBClientInvocationContext.java:181)
at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:136)
at org.jboss.ejb.client.EJBInvocationHandler.doInvoke(EJBInvocationHandler.java:121)
at org.jboss.ejb.client.EJBInvocationHandler.invoke(EJBInvocationHandler.java:104)
at com.sun.proxy.$Proxy5.get(Unknown Source)
at com.servlet.RuleServlet.doGet(RuleServlet.java:38)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:724)
