http://ybzshizds.iteye.com/blog/313342

默认的作法：
  jboss.xml中这样配置

     <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE jboss PUBLIC "-//JBoss//DTD JBOSS 3.0//EN" "http://www.jboss.org/j2ee/dtd/jboss_3_0.dtd">
<jboss>
<enterprise-beans>
<!--
To add beans that you have deployment descriptor info for, add
a file to your XDoclet merge directory called jboss-beans.xml that contains
the <session></session>, <entity></entity> and <message-driven></message-driven>
markup for those beans.
-->
<session>
<ejb-name>TrainArticle</ejb-name>
<jndi-name>ejb/TrainArticle</jndi-name>
</session>
<session>
<ejb-name>TrainOrganInfo</ejb-name>
<jndi-name>ejb/TrainOrganInfo</jndi-name>
</session>
<!--
write a merge file jboss-webservices.ent for webservice-description
-->
</enterprise-beans>
<resource-managers>
</resource-managers>
<!--
| for container settings, you can merge in jboss-container.xml
| this can contain <invoker-proxy-bindings/> and <container-configurations/>
-->
</jboss>

在ejb.jar.xml中这样配置

     <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar >
<description><![CDATA[No Description.]]></description>
<display-name>Generated by XDoclet</display-name>
<enterprise-beans>
<!-- Session Beans -->
<session >
<description><![CDATA[Description for TrainArticle]]></description>
<display-name>Train Article Handler Bean</display-name>
<ejb-name>TrainArticle</ejb-name>
<home>com.train.search.ejb.TrainArticleHome</home>
<remote>com.train.search.ejb.TrainArticle</remote>
<ejb-class>com.train.search.ejb.TrainArticleBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
<env-entry>
<env-entry-name>ejb/BeanFactoryPath</env-entry-name>
<env-entry-type>java.lang.String</env-entry-type>
<env-entry-value>applicationContext.xml</env-entry-value>
</env-entry>
</session>
<session >
<description><![CDATA[Description for TrainOrganInfo]]></description>
<display-name>Train OrganInfo Handler Bean</display-name>
<ejb-name>TrainOrganInfo</ejb-name>
<home>com.train.search.ejb.TrainOrganInfoHome</home>
<remote>com.train.search.ejb.TrainOrganInfo</remote>
<ejb-class>com.train.search.ejb.TrainOrganInfoBean</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
<env-entry>
<env-entry-name>ejb/BeanFactoryPath</env-entry-name>
<env-entry-type>java.lang.String</env-entry-type>
<env-entry-value>applicationContext.xml</env-entry-value>
</env-entry>
</session>
</enterprise-beans>
<assembly-descriptor >
</assembly-descriptor>
</ejb-jar>

TrainArticleBean.java

     package com.train.search.ejb;
import java.rmi.RemoteException;
import java.util.List;
import javax.ejb.CreateException;
import com.train.compass.service.TraArticleService;
import com.train.search.ejb.vo.TraArticle;
import com.util.pagination.Page;
public class TrainArticleBean extends AbstractStatelessSessionBean{
private static final long serialVersionUID = -8153415548838977604L;
private TraArticleService traArticleService;
@Override
protected void onEjbCreate() throws CreateException {
if(traArticleService==null){
traArticleService=(TraArticleService)getBeanFactory().getBean("traArticleService");
}
}
public void updateArticle(TraArticle traArticle) throws RemoteException{
traArticleService.updateArticle(traArticle);
}
public int deleteArticles(final List articleIDs) throws RemoteException{
return traArticleService.deleteArticles(articleIDs);
}
public TraArticle loadByArticleID(int articleID) throws RemoteException{
return traArticleService.loadByArticleID(articleID);
}
public TraArticle storeArticle(TraArticle traArticle) throws RemoteException{
return traArticleService.storeArticle(traArticle);
}
public Page findByOrgnID( int orgnID, Page page) throws RemoteException{
return traArticleService.findByOrgnID(orgnID, page);
}
public Page search(Page page) throws RemoteException{
return traArticleService.search(page);
}
public TraArticle Query(int articleID) throws RemoteException{
return traArticleService.Query(articleID);
}
public boolean insert(TraArticle[] ta) throws RemoteException{
return traArticleService.insert(ta);
}
public List getAllArticles(int orgnIDBegin,int orgnIDEnd) throws RemoteException{
return traArticleService.getAllArticles(orgnIDBegin, orgnIDEnd);
}
public int getAllArticleCount(int orgnID) throws RemoteException{
return traArticleService.getAllArticleCount(orgnID);
}
}

TrainOrganInfoBean.java

     package com.train.search.ejb;
import java.rmi.RemoteException;
import java.util.List;
import javax.ejb.CreateException;
import com.train.compass.service.TraOrganInfoService;
import com.train.search.ejb.vo.TraOrganInfo;
import com.util.pagination.Page;
public class TrainOrganInfoBean extends AbstractStatelessSessionBean{
private static final long serialVersionUID = -8153415548838977604L;
private TraOrganInfoService traOrganInfoService;
@Override
protected void onEjbCreate() throws CreateException {
if(traOrganInfoService==null){
traOrganInfoService=(TraOrganInfoService)getBeanFactory().getBean("traOrganInfoService");
}
}
public TraOrganInfo getTraOrganInfoByID(Integer traID) throws RemoteException{
return traOrganInfoService.getTraOrganInfoByID(traID);
}
public void updateTraOrganInfo(TraOrganInfo traOrganInfo) throws RemoteException{
traOrganInfoService.updateTraOrganInfo(traOrganInfo);
}
public TraOrganInfo findTraOrganInfoByName(String userName) throws RemoteException{
return traOrganInfoService.findTraOrganInfoByName(userName);
}
public TraOrganInfo storeTraOrganInfo(TraOrganInfo traOrganInfo) throws RemoteException{
return traOrganInfoService.storeTraOrganInfo(traOrganInfo);
}
public boolean updatePassword(Integer traID,String password) throws RemoteException{
return traOrganInfoService.updatePassword(traID, password);
}
public Page search(Page page) throws RemoteException{
return traOrganInfoService.search(page);
}
public TraOrganInfo Query(int trainID) throws RemoteException{
return traOrganInfoService.Query(trainID);
}
public boolean insert(TraOrganInfo[] to) throws RemoteException{
return traOrganInfoService.insert(to);
}
public List getAllOrganInfos(int trainIDBegin, int trainIDEnd) throws RemoteException{
return traOrganInfoService.getAllOrganInfos(trainIDBegin, trainIDEnd);
}
public void auditingOrganInfo(Integer traID, Short checkFlag) throws RemoteException{
traOrganInfoService.auditingOrganInfo(traID, checkFlag);
}
}

出现的问题：
  每调用一个EJB Bean的时候,都会让spring的容器初始化一次,这无疑是一种资源浪费,因为
  spring的配置文件,applicationContext.xml只需加载一次就可以了

为了寻求解决的办法,找了一些资料,查看了一下源码
  最后解决方案如下：
  新建MyAbstractStatelessSessionBean.java继承自AbstractStatelessSessionBean
  setBeanFactoryLocatorKey()和setBeanFactoryLocator(),改变    AbstractStatelessSessionBean.java的默认行为

      package com.train.search.ejb;
import org.springframework.beans.factory.access.BeanFactoryLocator;
import org.springframework.beans.factory.access.SingletonBeanFactoryLocator;
import org.springframework.ejb.support.AbstractStatelessSessionBean;
public abstract class MyAbstractStatelessSessionBean extends AbstractStatelessSessionBean {
private static final long serialVersionUID = 5192139144489442341L;
private BeanFactoryLocator beanFactoryLocator=SingletonBeanFactoryLocator.getInstance();
public MyAbstractStatelessSessionBean(){
super();
this.setBeanFactoryLocatorKey("global.spring.ejb.context");
this.setBeanFactoryLocator(beanFactoryLocator);
}
}

然后让TrainOrganInfoBean.java 和 TrainArticleBean.java都继承自MyAbstractStatelessSessionBean.java
加入beanRefFactory.xml文件

 <?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<!--
- Application context definition for Petclinic on Hibernate.
-->
<beans>
<bean id="global.spring.ejb.context" class="org.springframework.context.support.ClassPathXmlApplicationContext">
<constructor-arg>
<list>
<value>META-INF/applicationContext.xml</value>
</list>
</constructor-arg>
</bean>
</beans>

这样Spring的applicationContext.xml配置文件就只需加载一次即可！

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