Connection error to postgresql via servlets - postgresql

I am new to postgresql and JDBC.I am not able to figure out my mistake.I have filled in the port number,password and username correctly.
My Code:
package ieiPackage;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.sql.*;
/**
* Servlet implementation class login1
*/
#WebServlet("/login1")
public class login1 extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* #see HttpServlet#HttpServlet()
*/
public login1() {
super();
// TODO Auto-generated constructor stub
}
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
System.out.println("-------- PostgreSQL "
+ "JDBC Connection Testing ------------");
try {
Class.forName("org.postgresql.Driver");
} catch (ClassNotFoundException e) {
System.out.println("Where is your PostgreSQL JDBC Driver? "
+ "Include in your library path!");
e.printStackTrace();
return;
}
System.out.println("PostgreSQL JDBC Driver Registered!");
Connection connection = null;
try {
connection = DriverManager.getConnection(
"jdbc:postgresql://localhost:5432/members","xxxx","xxxx");
} catch (SQLException e) {
System.out.println("Connection Failed! Check output console");
e.printStackTrace();
return;
}
if (connection != null) {
System.out.println("You made it, take control your database now!");
} else {
System.out.println("Failed to make connection!");
}
}
/**
* #see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
}
The Error in the console:
-------- PostgreSQL JDBC Connection Testing ------------
Where is your PostgreSQL JDBC Driver? Include in your library path!
java.lang.ClassNotFoundException: org.postgresql.Driver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1720)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1571)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at ieiPackage.login1.doGet(login1.java:36)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:303)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:122)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:170)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:950)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1040)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:607)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:313)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

The problem is that postgresql driver cannot be found in classpath at runtime.
In orde to solve it:
a) if you use Maven add the following to pom.xml
<dependency>
<groupId>postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>9.1-901.jdbc4</version>
</dependency>
b) Otherwise just download the driver from link and place it into WEB-INF/lib folder

My guess would be that your application cannot find the postgresql jdbc driver. Is it in your class path when executing?

Related

Connect KafkaProducer using Servlet

I am trying to connect KafkaProducer using servlet and setup my project in eclipse. But when i run KafkaProducer i get an exception:
org.apache.catalina.core.StandardWrapperValve invoke SEVERE:
Servlet.service() for servlet [simple_kafka.SimpleProducer] in context
with path [/kafka_web] threw exception [Servlet execution threw an
exception] with root cause java.lang.ClassNotFoundException:
org.apache.kafka.clients.producer.KafkaProducer at
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1291)
at
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119)
at simple_kafka.SimpleProducer.doPost(SimpleProducer.java:56) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:661) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:742) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:478)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)
at
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)
at
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)
at
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
my KafkaProducerServlet is as follow:
package simple_kafka;
import java.io.IOException;
import java.util.Properties;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.kafka.clients.producer.KafkaProducer;
import org.apache.kafka.clients.producer.ProducerConfig;
//import org.apache.kafka.clients.producer.Producer;
import org.apache.kafka.clients.producer.ProducerRecord;
/**
* Servlet implementation class SimpleProducer
*/
#WebServlet("/producer")
public class SimpleProducer extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* #see HttpServlet#HttpServlet()
*/
public SimpleProducer() {
super();
// TODO Auto-generated constructor stub
}
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
// response.getWriter().append("Served at: ").append(request.getContextPath());
}
/**
* #see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doGet(request, response);
response.getWriter().append("Served at: ").append(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG);
String topicName = "ReplicaTopic";
String key = "Key1";
String value = "Value-1";
Properties props = new Properties();
props.put(ProducerConfig.BOOTSTRAP_SERVERS_CONFIG, "192.168.1.59:9092,192.168.1.59:9093");
props.put("key.serializer","org.apache.kafka.common.serialization.StringSerializer");
props.put("value.serializer", "org.apache.kafka.common.serialization.StringSerializer");
KafkaProducer<String, String> producer = new KafkaProducer <String, String>(props);
try {
ProducerRecord<String, String> record = new ProducerRecord<>(topicName,key,value);
producer.send(record);
producer.close();
}
catch(Exception e) {
response.getWriter().append("Exception at: ").append((CharSequence) e);
}
// response.sendRedirect("/consumer");
}
}
I had Included Following JAR's in BuildPath of project Property:
Kafka 2.12-0.11.0.1.jar
kafka-clients-0.11.0.1.jar
slf4j-api-1.7.25.jar
After day long searching i found that you need to include the JAR files WEB-INF-> lib folder and you need to delete your server from eclipse & reconfigured it. After doing that i am able to run the KafkaProducer.

CommunicationException- failed to unmarshel Remote business interface looking up ejb3 in weblogic

My ejb 3 classes and remote interface are as follows :
package com.myeclipse.ejb3;
import java.io.Serializable;
public interface IMyBean extends Serializable
{
public void doSomething();
}
Remote interface:
package com.myeclipse.ejb3;
import javax.ejb.Remote;
#Remote
public interface MyBeanRemote extends IMyBean {
}
Stateless ejb:
package com.myeclipse.ejb3;
import javax.ejb.Stateless;
#Stateless(mappedName="ejb/MyBean")
public class MyBean implements MyBeanRemote
{
public void doSomething()
{
System.out.println("Hello world");
}
}
Project is successully deployed as a jar file in weblogic. I developed
a standalone client to call ejb. But this is failing. Kindly help.
I've included all the weblogic server libraries to connect to jndi and
remote business interface for complilation.
Client Code :
package Ejb3_Client;
import java.util.Properties;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class MyBeanClient {
/**
* #param args
*/
public static void main(String[] args)
{
// TODO Auto-generated method stub
try {
Properties p = new Properties();
p.put("java.naming.factory.initial", "weblogic.jndi.WLInitialContextFactory");
p.put("java.naming.provider.url", "t3://172.21.123.70:8001");
InitialContext ctx = new InitialContext(p);
MyBeanRemote bean = (MyBeanRemote) ctx.lookup("ejb/MyBean#com.myeclipse.ejb3.MyBeanRemote");
System.out.println("bean instance "+ bean);
bean.doSomething();
System.out.println("bean worked");
} catch (NamingException e) {
e.printStackTrace();
}
}
}
But I am getting this exception:
javax.naming.CommunicationException [Root exception is
java.rmi.UnmarshalException: failed to unmarshal class
java.lang.Object; nested exception is:
java.lang.ClassNotFoundException: com.myeclipse.ejb3.MyBeanRemote]
at
weblogic.jndi.internal.ExceptionTranslator.toNamingException(ExceptionTranslator.java:74)
at
weblogic.jndi.internal.WLContextImpl.translateException(WLContextImpl.java:439)
at
weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:395)
at
weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:380)
at javax.naming.InitialContext.lookup(InitialContext.java:392) at
Ejb3_Client.MyBeanClient.main(MyBeanClient.java:33) Caused by:
java.rmi.UnmarshalException: failed to unmarshal class
java.lang.Object; nested exception is:
java.lang.ClassNotFoundException: com.myeclipse.ejb3.MyBeanRemote at
weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:244) at
weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:348)
at
weblogic.rmi.cluster.ClusterableRemoteRef.invoke(ClusterableRemoteRef.java:259)
at weblogic.jndi.internal.ServerNamingNode_1030_WLStub.lookup(Unknown
Source) at
weblogic.jndi.internal.WLContextImpl.lookup(WLContextImpl.java:392)
... 3 more Caused by: java.lang.ClassNotFoundException:
com.myeclipse.ejb3.MyBeanRemote at
java.net.URLClassLoader$1.run(URLClassLoader.java:200) at
java.security.AccessController.doPrivileged(Native Method) at
java.net.URLClassLoader.findClass(URLClassLoader.java:188) at
java.lang.ClassLoader.loadClass(ClassLoader.java:307) at
sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at
java.lang.ClassLoader.loadClass(ClassLoader.java:252) at
weblogic.ejb.container.internal.RemoteBusinessIntfProxy.readObject(RemoteBusinessIntfProxy.java:200)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597) at
java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:974)
at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1849)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at
java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at
java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at
java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1753)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1329)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:351)
at
weblogic.utils.io.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:197)
at
weblogic.rjvm.MsgAbbrevInputStream.readObject(MsgAbbrevInputStream.java:564)
at
weblogic.utils.io.ChunkedObjectInputStream.readObject(ChunkedObjectInputStream.java:193)
at weblogic.rmi.internal.ObjectIO.readObject(ObjectIO.java:62) at
weblogic.rjvm.ResponseImpl.unmarshalReturn(ResponseImpl.java:240) ...
7 more
I searched a lot but din find the problem why it can't unmarshel remote interface.
the reason for above error mainly because in some java file which implements Serializable interface has been changed you can revert those files to previous version

java.lang.ClassNotFoundException: org.hibernate.criterion.Projection

Good Morning, please i don't know how to resolve that exception, i'm using ApcheTomcat 7 under eclipse and that exception is thrown everytime i run my servlet, here's my servlet for more clarity:
package servlets;
import java.util.*;
import java.io.IOException;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import dao.*;
#WebServlet("/AdminServlt")
public class AdminServlt extends HttpServlet {
private static final long serialVersionUID = 1L;
CarHome carDao;
public void init(ServletConfig config) throws ServletException{
carDao = new CarHome();
}
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
populateAdminView(request, response);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
}
public void populateAdminView(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException{
ArrayList productsList = (ArrayList) carDao.extractAdminAttributes();
HttpSession session = request.getSession(true);
session.setAttribute("product_list",productsList);
RequestDispatcher rd = request.getRequestDispatcher("Admin.jsp");
rd.forward(request, response);
}
}
and here's CarHome.java
package dao;
import java.util.ArrayList;
import java.util.List;
import javax.naming.InitialContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.hibernate.SessionFactory;
import org.hibernate.criterion.*;
import entity.*;
public class CarHome {
private static final Log log = LogFactory.getLog(CarHome.class);
private final SessionFactory sessionFactory = getSessionFactory();
public List extractAdminAttributes() {
log.debug("Extracting car attributes for administrator view");
try {
ArrayList results = (ArrayList) sessionFactory
.getCurrentSession()
.createCriteria("pojo.Car")
.setProjection(
Projections.projectionList()
.add(Projections.property("carDesc"))
.add(Projections.property("price"))
.add(Projections.property("quantity")));
return results;
} catch (RuntimeException re) {
log.error("find by admin view failed");
throw re;
}
}
}
here's the stacktrace of the exception
java.lang.ClassNotFoundException: org.hibernate.criterion.Projection
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1676)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1521)
servlets.AdminServlt.init(AdminServlt.java:31)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:462)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:395)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
java.lang.Thread.run(Unknown Source)
i have solved my problem it was very simple, the main reason is that the hibernate.cor.jar file wasn't in the lib folder under the web-content of the application when i put it there it works fine
I was facing the same issue but in my case i re-ordered the hibernate-cor.jar on the top using eclipse
chose the project --> right click -->build path -->order tab -->chose the hibernate-cor.jar click top

eclipse jena and tomcat query

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.hp.hpl.jena.ontology.OntModel;
import com.hp.hpl.jena.rdf.model.*;
import com.hp.hpl.jena.rdf.model.ModelFactory;
import com.hp.hpl.jena.util.FileManager;
import com.hp.hpl.jena.sparql.*;
import java.io.InputStream;
import com.hp.hpl.jena.query.*;
import com.hp.hpl.jena.util.FileManager;
import com.hp.hpl.jena.ontology.*;
/**
* Servlet implementation class rdf
*/
public class rdf extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* #see HttpServlet#HttpServlet()
*/
public rdf() {
super();
// TODO Auto-generated constructor stub
}
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
}
/**
* #see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
String inputFileName = "/home/jarboox/Documentos/Eclipse/workspace/Sparql/src/tres.rdf";
try {
//create the reasoning model using the base
OntModel inf = ModelFactory.createOntologyModel();
// use the FileManager to find the input file
InputStream in = FileManager.get().open(inputFileName);
if (in == null) {
throw new IllegalArgumentException("File: " + inputFileName + " not found");
}
inf.read(in, "");
} catch (Exception e) {
System.out.println(e.getMessage());
}
}
}
Tomcat problem:
type Informe de Excepción
mensaje La ejecución del Servlet lanzó una excepción
descripción El servidor encontró un error interno que hizo que no
pudiera rellenar este requerimiento.
excepción
javax.servlet.ServletException: La ejecución del Servlet lanzó una
excepción causa raíz
java.lang.NoClassDefFoundError: com/hp/hpl/jena/rdf/model/ModelFactory
rdf.doPost(rdf.java:55)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717) causa
raíz
java.lang.ClassNotFoundException:
com.hp.hpl.jena.rdf.model.ModelFactory
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
rdf.doPost(rdf.java:55)
javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717) nota La
traza completa de la causa de este error se encuentra en los archivos
de diario de Apache Tomcat/6.0.36.
java.lang.NoClassDefFoundError: com/hp/hpl/jena/rdf/model/ModelFactory
rdf.doPost(rdf.java:55)
The jena jars are not on the runtime class path of the webapp.

EJB injection in Servelet failed with " Resolution should not happen via injection container"

I have one EAR file with one ejb jar and web module. EJB jar contains one stateless Ejb and local interface
#Stateless(name="MsgProducer")
#Local(MsgProducerLocal.class)
public class MsgProducer implements MsgProducerLocal {
public void sendMessage{}
}
Now i have one servlet where I am injecting this session bean with #EJB annotation but when I deploy this EAR with both ejb jar and web.war module inside it in jboss 5.1 then it is throwing the following exception.
java.lang.IllegalStateException: Resolution should not happen via injection container
at org.jboss.web.tomcat.service.TomcatInjectionContainer.getEjbJndiName(TomcatInjectionContainer.java:640)
at org.jboss.injection.EjbEncInjector.inject(EjbEncInjector.java:80)
at org.jboss.web.tomcat.service.TomcatInjectionContainer.populateEnc(TomcatInjectionContainer.java:482)
at org.jboss.web.tomcat.service.deployers.TomcatDeployment$EncListener.lifecycleEvent(TomcatDeployment.java:471)
at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:4388)
at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeployInternal(TomcatDeployment.java:310)
at org.jboss.web.tomcat.service.deployers.TomcatDeployment.performDeploy(TomcatDeployment.java:142)
at org.jboss.web.deployers.AbstractWarDeployment.start(AbstractWarDeployment.java:461)
at org.jboss.web.deployers.WebModule.startModule(WebModule.java:118)
at org.jboss.web.deployers.WebModule.start(WebModule.java:97)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.mx.interceptor.ReflectedDispatcher.invoke(ReflectedDispatcher.java:157)
at org.jboss.mx.server.Invocation.dispatch(Invocation.java:96)
at org.jboss.mx.server.Invocation.invoke(Invocation.java:88)
at org.jboss.mx.server.AbstractMBeanInvoker.invoke(AbstractMBeanInvoker.java:264)
at org.jboss.mx.server.MBeanServerImpl.invoke(MBeanServerImpl.java:668)
at org.jboss.system.microcontainer.ServiceProxy.invoke(ServiceProxy.java:206)
at $Proxy38.start(Unknown Source)
In my web.xml I am using 2.5 version of schema. Here is my sample code from servelet
public class MessageSenderServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
#EJB(name="MsgProducer")
public MsgProducerLocal producer;
/**
* #see HttpServlet#HttpServlet()
*/
public MessageSenderServlet() {
super();
}
/**
* #see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
doPost(request, response);
}
/**
* #see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
producer.sendMessage();
response.sendRedirect("index.jsp");
}
}
I am using Eclipse 3.6, JBoss 5.1, and EJB 3.0.
Can somebody will explain me what is wrong with this code?
How can I resolve this error?
Thanks
Are you putting your Servlet in .WAR file?
Note : You should put your Servlet in .war file and your ejb in jar file. And then create an ear file.
If you are implementing only one interface then you dont have to use #EJB(name="MsgProducer")
. You can simply say #EJB public MsgProducerLocal producer;
As you mentioned, you have web.xml version 2.5. Please make sure that you are using the correct format of it.
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">