ejb2.0 开发实例

组件接口类

public interface Hello extends  EJBObject{
	public String getHello() throws RemoteException;
}

主接口类一般命名为xxxHome

public interface HelloHome extends EJBHome {
	public Hello create() throws RemoteException,CreateException;
}

实现类一般命名为xxxEJB

public class HelloEJB implements SessionBean {
	public void ejbActivate() throws EJBException, RemoteException {
	}
	public void ejbPassivate() throws EJBException, RemoteException {
	}
	public void ejbRemove() throws EJBException, RemoteException {

	}

	public void setSessionContext(SessionContext arg0) throws EJBException,
			RemoteException {
	}

	public void ejbCreate() throws javax.ejb.CreateException {
	}

	public String getHello() {
		return "Hello!EJB ";
	}
}

ejb-jar.xml

	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/ejb-jar_2_1.xsd"
	version="2.1">
	
		
	
	Generated by XDoclet

	
		
		
			
				
			
			Name for Hello

			Hello
			
			
				com.eric.interfaces.HelloHome
			
			
			
				com.eric.interfaces.Hello
			
			
			
				com.eric.ejb.HelloEJB
			
			Stateless
			Container
		
	 
	
	

jboss.xml

	
		
			Hello
			ejb/Hello
		
	

HelloHome home=null;
String result=null;
Properties props = new Properties();
props.setProperty("java.naming.factory.initial","org.jnp.interfaces.NamingContextFactory");
props.setProperty("java.naming.provider.url", "localhost:1099");
props.setProperty("java.naming.factory.url.pkgs","org.jboss.naming:org.jnp.interfaces");
InitialContext ctx = new InitialContext(props);	
home=(HelloHome)ctx.lookup("ejb/Hello");
Hello hello = home.create();      
result = hello.getHello();