1:36 a.m.
Hi!
I am Basudev.
I am trying to run a simple enterprise application. My application's name is
'NewsApp' and I have used jboss-5.0.0.Beta4 , jdk1.6.0 and Netbean IDE 6.1.When I
run my application then server throw the requested resource (/NewsApp-war/ListNews) is not
available.
Here is my code
1.ListNews.java
package web;
import ejb.NewsEntity;
import ejb.NewsEntityFacadeLocal;
import java.io.*;
//import java.net.*;
import java.util.Iterator;
import java.util.List;
import javax.ejb.EJB;
import javax.servlet.*;
import javax.servlet.http.*;
public class ListNews extends HttpServlet {
@EJB
private NewsEntityFacadeLocal newsEntityFacade;
protected void processRequest(HttpServletRequest request, HttpServletResponse
response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
PrintWriter out = response.getWriter();
try {
out.println("");
out.println("");
out.println("Servlet ListNews");
out.println("");
out.println("");
out.println("<h1>Servlet ListNews at " +
request.getContextPath () + "</h1>");
//newsEntityFacade = (NewsEntityFacadeLocal) lookupNewsEntityFacade();
List news = newsEntityFacade.findAll();
for (Iterator it = news.iterator(); it.hasNext();) {
NewsEntity elem = (NewsEntity) it.next();
out.println(" "+elem.getTitle()+" ");
out.println(elem.getBody()+" ");
}
out.println("Add new message");
out.println("");
out.println("");
} finally {
out.close();
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
public String getServletInfo() {
return "Short description";
}
/*private ejb.NewsEntityFacadeLocal lookupNewsEntityFacade() {
try {
javax.naming.Context c = new javax.naming.InitialContext();
return (ejb.NewsEntityFacadeLocal)
c.lookup("NewsApp/NewsEntityFacade/local");
}
catch(javax.naming.NamingException ne) {
java.util.logging.Logger.getLogger(getClass().
getName()).log(java.util.logging.Level.SEVERE,"exception
caught" ,ne);
throw new RuntimeException(ne);
}
}*/
// </editor-fold>
}
postMessage.java
package web;
import ejb.NewsEntity;
import java.io.*;
//import java.net.*;
import java.util.Queue;
import javax.jms.Destination;
import javax.jms.JMSException;
//import javax.jms.MessageProducer;
import javax.jms.ObjectMessage;
import javax.jms.QueueConnection;
import javax.jms.QueueConnectionFactory;
import javax.jms.QueueSession;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.jms.MessageProducer;
public class PostMessage extends HttpServlet {
/**
* Processes requests for both HTTP GET and POST methods.
* @param request servlet request
* @param response servlet response
*/
protected void processRequest(HttpServletRequest request, HttpServletResponse
response)
throws ServletException, IOException {
response.setContentType("text/html;charset=UTF-8");
String title=request.getParameter("title");
String body=request.getParameter("body");
if ((title!=null) && (body!=null)) {
Queue queue = null;
QueueConnection connection = null;
QueueSession session = null;
MessageProducer messageProducer = null;
try {
InitialContext ctx = new InitialContext();
queue = (Queue) ctx.lookup("queue/mdb");
QueueConnectionFactory factory =
(QueueConnectionFactory) ctx.lookup("ConnectionFactory");
connection = factory.createQueueConnection();
session = connection.createQueueSession(false,
QueueSession.AUTO_ACKNOWLEDGE);
messageProducer = session.createProducer((Destination) queue);
ObjectMessage message = session.createObjectMessage();
// here we create a NewsEntity, that will be sent in JMS message
NewsEntity e = new NewsEntity();
e.setTitle(title);
e.setBody(body);
message.setObject(e);
messageProducer.send(message);
messageProducer.close();
connection.close();
response.sendRedirect("ListNews");
} catch (JMSException ex) {
ex.printStackTrace();
} catch (NamingException ex) {
ex.printStackTrace();
}
}
PrintWriter out = response.getWriter();
try {
out.println("");
out.println("");
out.println("Servlet PostMessage");
out.println("");
out.println("");
out.println("<h1>Servlet PostMessage at " +
request.getContextPath () + "</h1>");
out.println("");
out.println("Title: ");
out.println("Message: ");
out.println("");
out.println("");
out.println("");
out.println("");
} finally {
out.close();
}
}
@Override
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
}
@Override
public String getServletInfo() {
return "Short description";
}
// </editor-fold>
}
NewsEntity.java
package ejb;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
@Entity
public class NewsEntity implements Serializable {
private static final long serialVersionUID = 1L;
private Long id;
private String title;
private String body;
public void setId(Long id) {
this.id = id;
}
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
public Long getId() {
return id;
}
@Override
public int hashCode() {
int hash = 0;
hash += (id != null ? id.hashCode() : 0);
return hash;
}
@Override
public boolean equals(Object object) {
// TODO: Warning - this method won't work in the case the id fields are not
set
if (!(object instanceof NewsEntity)) {
return false;
}
NewsEntity other = (NewsEntity) object;
if ((this.id == null && other.id != null) || (this.id != null &&
!this.id.equals(other.id))) {
return false;
}
return true;
}
@Override
public String toString() {
return "ejb.NewsEntity[id=" + id + "]";
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getBody() {
return body;
}
public void setBody(String body) {
this.body = body;
}
}
NewMessageBean.java
package ejb;
import javax.annotation.Resource;
import javax.ejb.ActivationConfigProperty;
import javax.ejb.MessageDriven;
import javax.ejb.MessageDrivenContext;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.ObjectMessage;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
@MessageDriven(mappedName = "jms/NewMessage", activationConfig = {
@ActivationConfigProperty(propertyName = "acknowledgeMode",
propertyValue = "Auto-acknowledge"),
@ActivationConfigProperty(propertyName = "destinationType",
propertyValue = "javax.jms.Queue"),
@ActivationConfigProperty(propertyName = "destination", propertyValue =
"queue/mdb")
})
public class NewMessageBean implements MessageListener {
@Resource
private MessageDrivenContext mdc;
@PersistenceContext
private EntityManager em;
public NewMessageBean() {
}
public void onMessage(Message message) {
ObjectMessage msg = null;
try {
if (message instanceof ObjectMessage) {
msg = (ObjectMessage) message;
NewsEntity e = (NewsEntity) msg.getObject();
save(e);
}
} catch (JMSException e) {
e.printStackTrace();
mdc.setRollbackOnly();
} catch (Throwable te) {
te.printStackTrace();
}
}
public void save(Object object) {
em.persist(object);
}
}
NewsEntityFacade.java
package ejb;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
/**
*
* @author Administrator
*/
@Stateless
public class NewsEntityFacade implements NewsEntityFacadeLocal {
@PersistenceContext
private EntityManager em;
public void create(NewsEntity newsEntity) {
em.persist(newsEntity);
}
public void edit(NewsEntity newsEntity) {
em.merge(newsEntity);
}
public void remove(NewsEntity newsEntity) {
em.remove(em.merge(newsEntity));
}
public NewsEntity find(Object id) {
return em.find(ejb.NewsEntity.class, id);
}
public List findAll() {
return em.createQuery("select object(o) from NewsEntity as
o").getResultList();
}
}
please Sir I need help.Where is my fault?How can solve it?
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