关于EJB3的一个简单例子-优快云博客

EJB3已经变得很简单了，在这记上一笔。

关于EJB3,可参阅：http://www.foshanshop.net/

服务器选择Jboss。客户端需要导入Jboss/client/jbossall-client.jar才能调用发布在Jboss中的EJB。

代码：

HelloBeanLocal.java

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package session;

import javax.ejb.Local;

    @Local
    public interface HelloBeanLocal {
    }

package session;

import javax.ejb.Local;

    @Local
    public interface HelloBeanLocal {
    }

HelloBeanRemote.java

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package session;

import javax.ejb.Remote;

@Remote
public interface HelloBeanRemote {

public String sayHello(String name);
}

package session;

import javax.ejb.Remote;

@Remote
public interface HelloBeanRemote {

public String sayHello(String name);
}

HelloBean.java

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package session;

import javax.ejb.Stateless;

@Stateless
public class HelloBean implements HelloBeanLocal, HelloBeanRemote {

public String sayHello(String name) {

            System.out.println("服务器端输出：" + name);
            return "Hello, " + name;
        }
    }

package session;

import javax.ejb.Stateless;

@Stateless
public class HelloBean implements HelloBeanLocal, HelloBeanRemote {

public String sayHello(String name) {

      System.out.println("服务器端输出：" + name);
      return "Hello, " + name;
     }
    }

HelloBeanClient.java

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    import java.util.*;
    import javax.naming.*;
    public class HelloBeanClient {

public static void main(String[] args)throws Exception {

    //      Hashtable properties=new Hashtable();
    //      properties.put(Context.INITIAL_CONTEXT_FACTORY,"org.jnp.interfaces.NamingContextFactory");
    //      properties.put(Context.PROVIDER_URL,"jnp://127.0.0.1");
    //      InitialContext ctx=new javax.naming.InitialContext(properties);

            Properties props = new Properties();
            props.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
            props.setProperty("java.naming.provider.url", "127.0.0.1:1099");
            props.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming:org.jnp.interfaces");
            InitialContext ctx = new InitialContext(props);

            session.HelloBeanRemote remote=(session.HelloBeanRemote)ctx.lookup("HelloBean/remote");
            System.out.println(remote.sayHello("Beijing"));
            ctx.close();
        }
    }