JBoss下的EJB3开发无状态会话Bean

开发一个具有Remote和Local接口的EJB Stateless SessionBean

Remote接口RemoteHelloWorldjava

Local接口LocalHelloWorldjava

SessionBean:HelloWorldBeanjava

JNDI配置jndiproperites

JSPhellojsp

package comyourcompanyejb;

public interface RemoteHelloWorld{

public String Say(String name);

}

package comyourcompanyejb;

public interface LocalHelloWorld{

public String Say(String name);

}

package comyourcompanyejb;

import javaxejbStateless;

import javaxejbRemote;

import javaxejbLocal;

import comyourcompanyejbRemoteHelloWorld;

import comyourcompanyejbLocalHelloWorld;

@Remote({RemoteHelloWorldclass})

//注释表示RemoteHelloWorld为这个SessionBean的Remote接口

@Local({RemoteHelloWorldclass})

//注释表示LocalHelloWorld为这个SessionBean的Local接口

//@Stateless注释表示这是一个无状态会话Bean

public @Stateless class HelloWorldBean implements RemoteHelloWorldLocalHelloWorld{

public String Say(String name){

return 这是一个无状态的EJB会话BEAN作者+name;

}

}

//JNDI配置告诉了你的客户端初始化jndi naming service

jndiproperties:

javanamingfactoryinitial=orgjnpinterfacesNamingContextFactory

javanamingfactoryurlpkgs=orgjbossnaming:orgjnpinterfaces

javanamingproviderurl=localhost:

JSP中调用代码如下

<%

Properties prop=new Properties();

propload(ThreadcurrentThread()getContextClassLoader()getResourceAsStream (jndiproperties));

InitialContext ctx=new InitialContext(prop);

RemoteHelloWorld remotehelloworld=(RemoteHelloWorld)ctxlookup (HelloWorldBean/remote);

remotehelloworldSay(Christina[remote]);

LocalHelloWorld localhelloworld=(LocalHelloWorld)ctxlookup (HelloWorldBean/local);

localhelloworldSay(Christina[local]);

%>

运行结果

这是一个无状态的EJB会话BEAN作者Christina[remote]

这是一个无状态的EJB会话BEAN作者Christina[local]

总结步骤

先写好了SessionBean的业务逻辑接口

再写SessionBean记得在SessionBean实现了业务逻辑接口