Jboss Ejb3.0 Statefull Bean

This example combines the new features of j2se5.0 's generis to look at the new features I wrote j2se5.0 generis



































Shoppingcart.java











Package Org.jboss.tutorial.stateful.bean;



Import Javax.ejb.Remote;











Import Javax.ejb.Remove;



Import Java.util.HashMap;



@Remote











public interface ShoppingCart











{











void Buy (String product, int quantity);



Hashmap<string, integer> getcartcontents ();



@Remove void Checkout ();











}















Shoppingcartbean.java











Package Org.jboss.tutorial.stateful.bean;



Import Javax.ejb.Remove;











Import javax.ejb.Stateful;



Import Java.util.HashMap;











Import java.io.Serializable;



@Stateful











public class Shoppingcartbean implements ShoppingCart, Serializable











{











Private hashmap<string, integer> cart = new hashmap<string, integer> ();



public void Buy (String product, int quantity)











{











if (Cart.containskey (product))











{











int CURRQ = Cart.get (product);











Currq + = quantity;











Cart.put (product, CURRQ);











}











Else











{











Cart.put (product, quantity);











}











}



Public hashmap<string, integer> getcartcontents ()











{











return cart;











}



@Remove











public void Checkout ()











{











System.out.println ("to be implemented");











}











}















Client.java











Package org.jboss.tutorial.stateful.client;



Import Org.jboss.tutorial.stateful.bean.ShoppingCart;



Import javax.ejb.EJBException;











Import Javax.naming.InitialContext;



Import java.rmi.NoSuchObjectException;











Import Java.util.HashMap;



















public class Client











{











public static void Main (string[] args) throws Exception











{











InitialContext CTX = new InitialContext ();











ShoppingCart cart = (ShoppingCart) ctx.lookup (ShoppingCart.class.getName ());



System.out.println ("Buying 1 Memory Stick");











Cart.buy ("Memory stick", 1);











System.out.println ("Buying Another Memory Stick");











Cart.buy ("Memory stick", 1);



System.out.println ("Buying a Laptop");











Cart.buy ("laptop", 1);



System.out.println ("Print cart:");











hashmap<string, integer> Fullcart = cart.getcartcontents ();











For (String Product:fullCart.keySet ())











{











System.out.println (Fullcart.get (product) + "" + product);











}



System.out.println ("Checkout");











Cart.checkout ();



System.out.println ("Should throw an object not found exception by invoking on Cart after @Remove method");











Try











{











Cart.getcartcontents ();











}











catch (Ejbexception e)











{











if (E.getcausedbyexception () instanceof nosuchobjectexception)











SYSTEM.OUT.PRINTLN ("Successfully caught no such object exception.");











Else











Throw e;











}











}











}







Here attached log4j.properties in Jboss-ejb-3.0_preview_5.zip without this always shows a lack of appender. With this, a record.log log file will be generated in this directory.



Log4j.properties











Log4j.appender.r=org.apache.log4j.rollingfileappender











Log4j.appender.r.file=record.log











Log4j.appender.r.layout=org.apache.log4j.patternlayout











Log4j.appender.r.layout.conversionpattern=%p%d{hh:mm:ss}%t%c{1}-%m%n











Log4j.appender.r.maxbackupindex=1











log4j.appender.r.maxfilesize=100kb











Log4j.appender.stdout.layout=org.apache.log4j.patternlayout











log4j.appender.stdout.layout.conversionpattern=%5p [%t] (%f:%l)-%m%n











Log4j.appender.stdout=org.apache.log4j.consoleappender











Log4j.rootlogger=stdout,r







Running: Reference installing.html











Under Windows











Open command Prompt cmd, to Jboss_home/bin











Run.bat–c All











With Ant











Just build and run.







Discuss:











It's not a big problem here either. is mainly familiar with the generis of j2se5.0. While writing this article and entity,











After learning Jboss-ejb-3.0_preview_5.zip after a period of time to write, may be unclear in some places. Have the question can send my mailbox rosonsandy@yahoo.com.cn, the title writes CSDN on the line, hoped can do something.