[EJB/JBoss] - How to access a stateless Bean from Java standalone client
by yhqian99
Hello All,
I am using MyEclipse5.5 + JBOSS to develop a stateless HelloEJB, after deployment, I can see the deployed bean from http://localhost:8080/jmx-console/.
Then I use a standalone java client to access the EJB, but get the error of "javax.naming.NoInitialContextException: Cannot instantiate class: org.jnp.interfaces.NamingContextFactory [Root exception is java.lang.ClassNotFoundException: org.jnp.interfaces.NamingContextFactory]"
Here is my code:
package com;
import javax.ejb.Stateless;
@Stateless
public class HelloEJB implements HelloEJBLocal, HelloEJBRemote
{
public HelloEJB()
{
}
public String sayHello(String name)
{
return "Welcome, " + name + ", I am a stateless Session Bean";
}
}
package com;
import javax.ejb.Local;
@Local
public interface HelloEJBLocal
{
public String sayHello(String name);
}
package com;
import javax.ejb.Remote;
@Remote
public interface HelloEJBRemote
{
public String sayHello(String name);
}
I have set the jbossall-client.jar to my java build path, is there anything I missed? Any help are highly apprieciated.
Yhqian
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17 years
[JBoss Cache: Core Edition] - Failed sending message with IOException: Invalid argument
by g9yuayon
I'm setting up a JBoss Cache cluster with two servers. Each server runs a cache instance. Each instance asynchronously replicates to the other using UDP mcast. When both servers were running, they kept logging the errors below. I've tried the Probe test and the LargeState. Both worked well. I also checked to make sure mcast was configured on both servers. Anything else should I look into? Thanks!
| (TP.java:1197) 2009-03-27 23:34:34,976 ERROR failed sending message to 10.210.102.100:51799 (89 bytes)
| java.lang.Exception: dest=/10.210.102.100:51799 (92 bytes)
| at org.jgroups.protocols.UDP._send(UDP.java:353)
| at org.jgroups.protocols.UDP.sendToSingleMember(UDP.java:308)
| at org.jgroups.protocols.TP.doSend(TP.java:1481)
| at org.jgroups.protocols.TP.send(TP.java:1468)
| at org.jgroups.protocols.TP.down(TP.java:1189)
| at org.jgroups.protocols.Discovery.down(Discovery.java:373)
| at org.jgroups.protocols.MERGE2.down(MERGE2.java:175)
| at org.jgroups.protocols.FD_SOCK.down(FD_SOCK.java:367)
| at org.jgroups.protocols.FD.down(FD.java:315)
| at org.jgroups.protocols.VERIFY_SUSPECT.down(VERIFY_SUSPECT.java:95)
| at org.jgroups.protocols.pbcast.NAKACK.down(NAKACK.java:672)
| at org.jgroups.protocols.UNICAST.retransmit(UNICAST.java:523)
| at org.jgroups.stack.AckSenderWindow.retransmit(AckSenderWindow.java:144)
| at org.jgroups.stack.Retransmitter$Task.run(Retransmitter.java:241)
| at org.jgroups.util.TimeScheduler$TaskWrapper.run(TimeScheduler.java:219)
| at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
| at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
| at java.util.concurrent.FutureTask.run(FutureTask.java:138)
| at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:98)
| at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:207)
| at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:885)
| at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
| at java.lang.Thread.run(Thread.java:619)
| Caused by: java.io.IOException: Invalid argument
| at java.net.PlainDatagramSocketImpl.send(Native Method)
| at java.net.DatagramSocket.send(DatagramSocket.java:612)
| at org.jgroups.protocols.UDP._send(UDP.java:349)
|
|
Here is my clustering configuration??????
| <clustering mode="replication" clusterName="JBossCache-cluster">
| <!--
| Defines whether to retrieve state on startup
| -->
| <stateRetrieval timeout="180000" fetchInMemoryState="false"/>
|
| <async useReplQueue="true" replQueueInterval="10000" replQueueMaxElements="500" serializationExecutorPoolSize="20" serializationExecutorQueueSize="5000000"/>
|
| <!--
| Configures the JGroups channel. Looks up a JGroups config file on the classpath or filesystem. udp.xml
| ships with jgroups.jar and will be picked up by the class loader.
| -->
| <jgroupsConfig>
| <UDP discard_incompatible_packets="true" enable_bundling="true" enable_diagnostics="true" ip_ttl="32" ip_mcast="true"
| loopback="false" max_bundle_size="64000" max_bundle_timeout="30" mcast_addr="228.10.10.10" bind_addr="10.210.102.100"
| mcast_port="45588" mcast_recv_buf_size="25000000" mcast_send_buf_size="640000"
| oob_thread_pool.enabled="true" oob_thread_pool.keep_alive_time="10000" oob_thread_pool.max_threads="4"
| oob_thread_pool.min_threads="1" oob_thread_pool.queue_enabled="true"
| oob_thread_pool.queue_max_size="10"
| oob_thread_pool.rejection_policy="Run" thread_naming_pattern="pl" thread_pool.enabled="true"
| thread_pool.keep_alive_time="30000" thread_pool.max_threads="25" thread_pool.min_threads="1"
| thread_pool.queue_enabled="true" thread_pool.queue_max_size="10" thread_pool.rejection_policy="Run"
| tos="8" ucast_recv_buf_size="20000000" ucast_send_buf_size="640000" use_concurrent_stack="true"
| use_incoming_packet_handler="true"/>
| <PING num_initial_members="3" timeout="2000"/>
| <MERGE2 max_interval="30000" min_interval="10000"/>
| <FD_SOCK/>
| <FD max_tries="5" shun="true" timeout="10000"/>
| <VERIFY_SUSPECT timeout="1500"/>
| <pbcast.NAKACK discard_delivered_msgs="true" gc_lag="0" retransmit_timeout="300,600,1200,2400,4800"
| use_mcast_xmit="false"/>
| <UNICAST timeout="300,600,1200,2400,3600"/>
| <pbcast.STABLE desired_avg_gossip="50000" max_bytes="400000" stability_delay="1000"/>
| <pbcast.GMS join_timeout="5000" print_local_addr="true" shun="false" view_ack_collection_timeout="5000"
| view_bundling="true"/>
| <FRAG2 frag_size="60000"/>
| <pbcast.STREAMING_STATE_TRANSFER/>
| <pbcast.STATE_TRANSFER up_thread="true" down_thread="true"/>
| <pbcast.FLUSH timeout="0"/>
| </jgroupsConfig>
| </clustering>
|
|
View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4221724#4221724
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17 years