参照itcast的视频教程开始了我的EJB学习，写了第一个Stateless的Remote的Bean

/** *  */package com.cqzhu.ejb3;/** * @author PowerLinux * */public interface HelloWorld {	public String sayHello(String name);}

/** *  */package com.cqzhu.ejb3.impl;import javax.ejb.Remote;import javax.ejb.Stateless;import com.cqzhu.ejb3.HelloWorld;/** * @author PowerLinux * */@Stateless@Remote(HelloWorld.class)public class HelloWorldBean implements HelloWorld {	/* (non-Javadoc)	 * @see com.cqzhu.ejb3.HelloWorld#sayHello(java.lang.String)	 */	@Override	public String sayHello(String name) {		// TODO Auto-generated method stub		return name+"Say Hello,World！";	}}

client：

package com.cqzhu.ejb3.test;import java.util.Properties;import javax.naming.InitialContext;import javax.naming.NamingException;import com.cqzhu.ejb3.HelloWorld;public class EJBClient {	/**	 * @param args	 */	public static void main(String[] args) {		// TODO Auto-generated method stub		Properties props = new Properties();		props.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");		props.setProperty("java.naming.provider.url", "localhost:1099");		try {			InitialContext ctx = new InitialContext();			HelloWorld helloworld = (HelloWorld)ctx.lookup("HelloWorldBean/Remote");			System.out.println(helloworld.sayHello("PowerLinux "));		} catch (NamingException e) {			// TODO Auto-generated catch block			e.printStackTrace();		}	}}

运行：

javax.naming.NoInitialContextException: Need to specify class name in environment or system property, or as an applet parameter, or in an application resource file:  java.naming.factory.initial	at javax.naming.spi.NamingManager.getInitialContext(NamingManager.java:645)	at javax.naming.InitialContext.getDefaultInitCtx(InitialContext.java:288)	at javax.naming.InitialContext.getURLOrDefaultInitCtx(InitialContext.java:325)	at javax.naming.InitialContext.lookup(InitialContext.java:392)	at com.cqzhu.ejb3.test.EJBClient.main(EJBClient.java:24)

出错原因：

InitialContext ctx = new InitialContext();初始化出错，应为：

InitialContext ctx = new InitialContext(props);

再次运行：

javax.naming.NameNotFoundException: Remote not bound

出粗原因：

HelloWorld helloworld = (HelloWorld)ctx.lookup("HelloWorldBean/Remote");应为：

HelloWorld helloworld = (HelloWorld)ctx.lookup("HelloWorldBean/remote");

运行：

PowerLinuxSay Hello,World！