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    paulwong
    

    

    



    
	
					
	
    
		
    
			Spring3 and EJB Integration(I)EJB Client 
		
    
		Spring3 and EJB Integration(I)EJB Client 
    I used EJB client to call EJB stateless bean, I found it is waste time to lookup the stateless bean every time. 
    So I tried to use spring to get singleton stub from EJB stateless bean. 
    The sample project are in easyaxis2proxy,easyrestproxy,easyjpa,easyejb. 
    We can configure that in Remote/Local way, you can choose that from comment/uncomment the codes I mentioned here. 

    1. Spring configuration file 
    local-ejb-context.xml: 

    <beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi    ="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" 
    xmlns:tx    ="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" 
    xsi:schemaLocation    ="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop-3.0.xsd  
               http://www.springframework.org/schema/tx 
               http://www.springframework.org/schema/tx/spring-tx-3.0.xsd 
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.0.xsd 
    "    > 
    <bean id="jndiTemplate" 
            class    ="org.springframework.jndi.JndiTemplate"> 
                <property name="environment"> 
                    <props> 
                        <prop key="java.naming.provider.url"> 
                        ${java.naming.provider.url} 
                        </prop> 
                        <prop key="java.naming.factory.initial"> 
                        ${java.naming.factory.initial} 
                        </prop> 
                        <prop key="java.naming.factory.url.pkgs"> 
                        ${java.naming.factory.url.pkgs} 
                        </prop> 
                    </props> 
                </property> 
            </bean> 
    <bean id="userServiceLocal" 
    class    ="org.springframework.ejb.access.LocalStatelessSessionProxyFactoryBean"> 
    <property name="jndiTemplate" ref="jndiTemplate" /> 
    <property name="jndiName" value="easyejb/UserServiceLocal" /> 
    <property name="businessInterface" 
    value    ="com.sillycat.core.webservice.interfaces.UserServiceLocal" /> 
    </bean> 
    </beans> 

    remote-ejb-context.xml 

    

    <?xml version="1.0" encoding="UTF-8"?> 
    <beans xmlns="http://www.springframework.org/schema/beans" 
    xmlns:xsi    ="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop" 
    xmlns:tx    ="http://www.springframework.org/schema/tx" xmlns:context="http://www.springframework.org/schema/context" 
    xsi:schemaLocation    ="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-3.0.xsd 
    http://www.springframework.org/schema/aop 
    http://www.springframework.org/schema/aop/spring-aop-3.0.xsd 
     http://www.springframework.org/schema/tx 
     http://www.springframework.org/schema/tx/spring-tx-3.0.xsd 
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-3.0.xsd 
    "    > 

    <bean id="jndiTemplate" 
     class    ="org.springframework.jndi.JndiTemplate"> 
         <property name="environment"> 
         <props> 
         <prop key="java.naming.provider.url"> 
     ${java.naming.provider.url} 
         </prop> 
         <prop key="java.naming.factory.initial"> 
     ${java.naming.factory.initial} 
         </prop> 
         <prop key="java.naming.factory.url.pkgs"> 
     ${java.naming.factory.url.pkgs} 
         </prop> 
         </props> 
         </property> 
         </bean> 
    <bean id="userServiceRemote" class="org.springframework.ejb.access.SimpleRemoteStatelessSessionProxyFactoryBean"> 
    <property name="jndiTemplate" ref="jndiTemplate" /> 
    <property name="jndiName" value="easyejb/UserService" /> 
    <property name="businessInterface" 
    value    ="com.sillycat.core.webservice.interfaces.UserService" /> 
    </bean> 
    </beans> 

    We can choose use Remote/Local from the main-context.xml 

    

    <import resource="classpath:resource-context.xml" /> 
    <import resource="classpath:core-context.xml" /> 
    <import resource="classpath:dao-context.xml" /> 
    <import resource="classpath:manager-context.xml" /> 
    <!-- 
    <import resource="classpath:local-ejb-context.xml" /> 
    <import resource="classpath:remote-ejb-context.xml" /> 
    --> 
    <import resource="classpath:local-ejb-context.xml" /> 

    <import resource="classpath:controller-easyrestproxy-context.xml" /> 
    <import resource="classpath:restclient-context.xml" /> 

    <!--My manager spring configuration to call EJB -->
    <bean id="personManager" class="com.sillycat.easyjpa.manager.PersonManagerImpl" > 
    <property name="personDAO" ref="personDAO" /> 
    <!-- 
    <property name="userServiceLocal" ref="userServiceLocal" /> 
    <property name="userServiceRemote" ref="userServiceRemote" /> 
    --> 
    <property name="userServiceLocal" ref="userServiceLocal" /> 
    </bean> 

    2. The properties file config.properties: 

    

    ########################################### 
    # EJB configuration 
    ########################################### 
    java.naming.factory.initial    =org.jnp.interfaces.NamingContextFactory 
    java.naming.factory.url.pkgs    =org.jboss.naming:org.jnp.interfaces 
    java.naming.provider.url    =localhost:1099 

    3. My Manager java source: 

    

    package com.sillycat.easyjpa.manager; 
    import java.util.List; 
    import com.sillycat.core.webservice.interfaces.UserServiceLocal; 
    import com.sillycat.core.webservice.model.IUser; 
    import com.sillycat.easyjpa.dao.PersonDAO; 
    import com.sillycat.easyjpa.model.Person; 
    public class PersonManagerImpl implements PersonManager 
    { 
     PersonDAO personDAO; 
     UserServiceLocal userServiceLocal; 
         // UserService userServiceRemote; 
     public List<Person> getAll() 
         { 
         return personDAO.getAll(); 
     }     
         public Person get(Integer id) 
         { 
     IUser iuser     = userServiceLocal.get(Integer.valueOf(1)); 
         // IUser iuser = userServiceRemote.get(Integer.valueOf(1)); 
     Person p = personDAO.get(id); 
     p.setName(iuser.getEmail()); 
         return p; 
     }     
         public void save(Person person) 
         { 
         if (person != null && person.getId() != null) 
         { 
     personDAO.update(person); 
     }     
         else 
         { 
     personDAO.insert(person); 
     }     
     }     
         public void updateName(Person person) 
         { 
         if (person != null && person.getId() != null) 
         { 
     personDAO.updateName(person.getName(), person.getId()); 
     }     
     }     
         public void delete(Integer id) 
         { 
     personDAO.delete(id); 
     }     
         public void setPersonDAO(PersonDAO personDAO) 
         { 
         this.personDAO = personDAO; 
     }     
         // public void setUserServiceRemote(UserService userServiceRemote) 
         // { 
         // this.userServiceRemote = userServiceRemote; 
         // } 
     public void setUserServiceLocal(UserServiceLocal userServiceLocal) 
         { 
         this.userServiceLocal = userServiceLocal; 
     }     
    }     

    4. We can deploy these packages to JBOSS, and run the axis2 testcase or rest testcase to verify that.  
		
    
			posted on 2011-11-24 21:54 paulwong 閱讀(536) 評論(0)  編輯  收藏  所屬分類: EJB3 
		
    
	
    
	
	





    
	    
    




    








    

				

    



    







    
        
	



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