i m having an exception in a jsf project if you can help me thanks! follows the below error:
javax.servlet.ServletException
javax.faces.webapp.FacesServlet.service(Unknown Source)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
java.lang.NullPointerException
DAO.TestDAO.getPersonne(TestDAO.java:26)
TestMB.TestMB.getAllData(TestMB.java:18)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
java.lang.reflect.Method.invoke(Unknown Source)
javax.el.BeanELResolver.getValue(BeanELResolver.java:94)
com.sun.faces.el.DemuxCompositeELResolver._getValue(Unknown Source)
com.sun.faces.el.DemuxCompositeELResolver.getValue(Unknown Source)
org.apache.el.parser.AstValue.getValue(AstValue.java:169)
org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:184)
com.sun.faces.facelets.el.TagValueExpression.getValue(Unknown Source)
javax.faces.component.ComponentStateHelper.eval(Unknown Source)
javax.faces.component.ComponentStateHelper.eval(Unknown Source)
javax.faces.component.UIData.getValue(Unknown Source)
javax.faces.component.UIData.getDataModel(Unknown Source)
javax.faces.component.UIData.setRowIndexWithoutRowStatePreserved(Unknown Source)
javax.faces.component.UIData.setRowIndex(Unknown Source)
com.sun.faces.renderkit.html_basic.TableRenderer.encodeBegin(Unknown Source)
javax.faces.component.UIComponentBase.encodeBegin(Unknown Source)
javax.faces.component.UIData.encodeBegin(Unknown Source)
javax.faces.component.UIComponent.encodeAll(Unknown Source)
javax.faces.component.UIComponent.encodeAll(Unknown Source)
javax.faces.component.UIComponent.encodeAll(Unknown Source)
com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(Unknown Source)
com.sun.faces.application.view.MultiViewHandler.renderView(Unknown Source)
com.sun.faces.lifecycle.RenderResponsePhase.execute(Unknown Source)
com.sun.faces.lifecycle.Phase.doPhase(Unknown Source)
com.sun.faces.lifecycle.LifecycleImpl.render(Unknown Source)
javax.faces.webapp.FacesServlet.service(Unknown Source)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
here is my managed bean class
where i put jsf annotations
package TestMB;
import DAO.TestDAO;
import Test.Test;
import java.util.List;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.SessionScoped;
#ManagedBean(name="TestM")
#SessionScoped
public class TestMB {
public List<Test> getAllData (){
return new TestDAO().getPersonne();
}
}
here is my xhtml page to display data from the database
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:h="http://java.sun.com/jsf/html">
<h:body>
<h:dataTable value="#{TestM.allData}" var="test">
<h:column>
<f:facet name="nom">
<h:outputText value="#{test.nom}"/>
</f:facet>
</h:column>
<h:column>
<f:facet name="prenom">
<h:outputText value="#{test.prenom}"/>
</f:facet>
</h:column>
</h:dataTable>
</h:body>
</html>
and here is my database function to display data from the database to this xhtml page:
package DAO;
import Test.Test;
import DAO.DBConn;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
public class TestDAO {
public TestDAO() {
}
public List<Test> getPersonne() {
ResultSet rs = null;
PreparedStatement pst = null;
Connection con = DBConn.getConnection();
String stm = "Select nom,prenom from t";
List<Test> records = new ArrayList<Test>();
try {
pst = con.prepareStatement(stm);
pst.execute();
rs = pst.getResultSet();
while(rs.next()) {
Test pers = new Test();
pers.setNom(rs.getString(1));
pers.setPrenom(rs.getString(2));
records.add(pers);
}
} catch (SQLException e) {
e.printStackTrace();
}
return records;
}
}
THANK YOU FOR HELPING IF IT IS POSSIBLE !! :D
Related
i am new to XML parsing.
I have one XML with parameters i would like to modify the paramter value from "abc" to "xyz" and proceed further. If string is modified then it has to update the XMl else it just show the print. But i am getting connection error. Please help to resolve the error and get the code executed successfully.
Full Stack:
java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.<init>(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.http.HttpClient.New(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect0(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source)
at javax.xml.parsers.DocumentBuilder.parse(Unknown Source)
at ModifyXMLDOM.main(ModifyXMLDOM.java:29)
Test.XML
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE suite SYSTEM "http://testng.org/testng-1.0.dtd">
<suite name="Test" verbose="123" >
<listeners>
<listener class-name="ListenerClass.Listener" />
</listeners>
<test name="Test" preserve-order="true" enabled="true">
<parameter name="Test" value= "abc" />
<classes>
<class name="Test.Class">
<methods>
<include name="TestMethod"></include>
</methods>
</class>
</classes>
</test>
</suite>
Modify Java.java
import java.io.File;
import java.io.IOException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;
public class ModifyXMLDOM {
public static void main(String[] args) {
String filePath = System.getProperty("user.dir") + "/Test.xml";
File xmlFile = new File(filePath);
DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder dBuilder;
try {
dBuilder = dbFactory.newDocumentBuilder();
Document doc = dBuilder.parse(xmlFile);
doc.getDocumentElement().normalize();
String str = updateElementValue(doc);
if(str != null)
{
// write the updated document to file or console
doc.getDocumentElement().normalize();
TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(doc);
StreamResult result = new StreamResult(new File("employee_updated.xml"));
transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.transform(source, result);
System.out.println("XML file updated successfully");
} else
{
System.out.println("String not modofied");
}
} catch (SAXException | ParserConfigurationException | IOException | TransformerException e1) {
e1.printStackTrace();
}
}
private static String updateElementValue(Document doc) {
NodeList employees = doc.getElementsByTagName("parameter");
Element emp = null;
// loop for each employee
emp = (Element) employees.item(0);
Node name = emp.getElementsByTagName("name").item(0).getFirstChild();
name.setNodeValue(name.getNodeValue().toUpperCase());
return name.getNodeValue().toUpperCase();
}
}
When using JSF with Tomcat on eclipse, a null pointer is always returned. This project is on IP tracking, and it is required to inject another bean into the application bean.
Bean to be injected: track
bean using the injection: increaseCount
The Track class
import java.util.HashMap;
import java.util.Map;
import javax.enterprise.context.ApplicationScoped;
import javax.inject.Named;
#Named(value = "track")
#ApplicationScoped
public class Track {
private Map<String, Integer> map = new HashMap<>();
public void add(String ipAddress) {
map.put(ipAddress, map.containsKey(ipAddress) ? map.get(ipAddress) + 1 : 1);
}
public int getCount(String ipAddress) {
return map.containsKey(ipAddress) ? map.get(ipAddress) : 0;
}
public String getAllCount() {
return "Count summary is " + map;
}
}
The IncreaseCount Class
I tried following the solution indicated here 👇 but encountered the same problem.
httpss://stackoverflow.com/questions/16399974/nullpointerexception-while-trying-to-access-inject-bean-in-constructor
import javax.annotation.PostConstruct;
import javax.enterprise.context.SessionScoped;
import javax.faces.context.FacesContext;
import javax.inject.Inject;
import javax.inject.Named;
import javax.servlet.http.HttpServletRequest;
#Named(value = "increaseCount")
#SessionScoped
public class IncreaseCount implements java.io.Serializable {
#Inject
private Track track;
private String ipAddress;
#PostConstruct
public void init() {
HttpServletRequest request = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext()
.getRequest();
this.ipAddress = request.getRemoteAddr();
}
/*
* public IncreaseCount() { HttpServletRequest request = (HttpServletRequest)
* FacesContext.getCurrentInstance().getExternalContext() .getRequest();
* this.ipAddress = request.getRemoteAddr(); }
*/
public void click() {
track.add(ipAddress);
}
public String getIpAddress() {
return ipAddress;
}
public int getCount() {
return track.getCount(ipAddress);
}
}
The XHTML page
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://xmlns.jcp.org/jsf/html">
<h:head>
<title>IncreaseCount</title>
</h:head>
<h:body>
<h:form>
<h:commandButton action="#{increaseCount.click()}" value="Click Me" />
<br>The current count is #{increaseCount.getCount()} and your IP address is #{increaseCount.getIpAddress()}.</br>
</h:form>
</h:body>
</html>
The Exception
As you can see, invoking the getCount() method in the Track class produces an Exception.
Root Cause
java.lang.NullPointerException
chapter39.IncreaseCount.getCount(IncreaseCount.java:39)
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.base/java.lang.reflect.Method.invoke(Method.java:567)
javax.el.BeanELResolver.invoke(BeanELResolver.java:158)
javax.el.CompositeELResolver.invoke(CompositeELResolver.java:79)
org.apache.el.parser.AstValue.getValue(AstValue.java:159)
org.apache.el.ValueExpressionImpl.getValue(ValueExpressionImpl.java:190)
com.sun.faces.facelets.el.ELText$ELTextVariable.writeText(Unknown Source)
com.sun.faces.facelets.el.ELText$ELTextComposite.writeText(Unknown Source)
com.sun.faces.facelets.compiler.TextInstruction.write(Unknown Source)
com.sun.faces.facelets.compiler.UIInstructions.encodeBegin(Unknown Source)
com.sun.faces.facelets.compiler.UILeaf.encodeAll(Unknown Source)
javax.faces.render.Renderer.encodeChildren(Unknown Source)
javax.faces.component.UIComponentBase.encodeChildren(Unknown Source)
javax.faces.component.UIComponent.encodeAll(Unknown Source)
javax.faces.component.UIComponent.encodeAll(Unknown Source)
javax.faces.component.UIComponent.encodeAll(Unknown Source)
com.sun.faces.application.view.FaceletViewHandlingStrategy.renderView(Unknown Source)
com.sun.faces.application.view.MultiViewHandler.renderView(Unknown Source)
com.sun.faces.lifecycle.RenderResponsePhase.execute(Unknown Source)
com.sun.faces.lifecycle.Phase.doPhase(Unknown Source)
com.sun.faces.lifecycle.LifecycleImpl.render(Unknown Source)
javax.faces.webapp.FacesServlet.service(Unknown Source)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
For JSF-based bean definitions:-
javax.faces.bean.SessionScoped //for bean scoping
javax.faces.bean.ManagedBean //for bean declaration
javax.faces.bean.ManagedProperty //for bean injection
#ManagedProperty(value="#{yourBeanName}")
private Track track;
For Better Understanding Please Go through this link
I have trying to connect to Amazon RDS and were able to connect it once though I am unable to connect it again. I have checked my username, password, database name, server, etc. and they are all correct. I have all the required files included before the compilation.
I have attached my code below:
import java.io.File;
import java.net.URL;
import java.sql.*;
import java.util.*;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.InputSource;
import java.net.URL;
import java.sql.*;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.InputSource;
public class test_url {
#SuppressWarnings("null")
public static void main(String[] args){
String url = "jdbc:mysql://newtes.ctt52jgw7nwb6.eu-west-1.rds.amazonaws.com:3306/";
String userName = "amankijawani";
String password = "vegasishere";
String dbName = "newtesDB";
String driver = "com.mysql.jdbc.Driver";
System.out.println("Connecting database...");
try {
Class.forName("com.mysql.jdbc.Driver");
Connection connection = DriverManager.getConnection(url + dbName, userName, password);
System.out.println("Database connected!");
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
ERROR
Connecting database...
com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure
The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server.
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:988)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:341)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2251)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2284)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2083)
at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:806)
at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.jdbc.Util.handleNewInstance(Util.java:404)
at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:410)
at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:328)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at test_url.main(test_url.java:44)
Caused by: java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:211)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:300)
... 15 more
I'm trying to create a jms publisher/subscriber chat application in eclipse.
import java.util.Properties;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.TextMessage;
import javax.jms.Topic;
import javax.jms.TopicConnection;
import javax.jms.TopicConnectionFactory;
import javax.jms.TopicSession;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.naming.NamingException;
public class TopicConsumer implements MessageListener {
public static void main(String[] args) throws JMSException, NamingException {
System.out.println(".....Entering JMS example TopicConsumer....");
Context context = TopicConsumer.getInitialContext();
TopicConnectionFactory topicConnectionFactory = (TopicConnectionFactory) context.lookup("ConnectionFactory");
Topic topic = (Topic) context.lookup("topic/zaneacademy_jms_tutorial_01");
TopicConnection topicConnection = topicConnectionFactory.createTopicConnection();
TopicSession topicSession = topicConnection.createTopicSession(false, TopicSession.AUTO_ACKNOWLEDGE);
topicSession.createSubscriber(topic).setMessageListener(new TopicConsumer());
topicConnection.start();
System.out.println("......Exiting JMS Example TopicConsumer.....");
}
public void onMessage(Message message) {
try {
System.out.println("Incoming Messages: " + ((TextMessage)message).getText());
} catch (JMSException e) {
e.printStackTrace();
}
}
public static Context getInitialContext() throws JMSException, NamingException {
Properties props = new Properties();
props.setProperty("java.naming.factory.initial", "org.jnp.interfaces.NamingContextFactory");
props.setProperty("java.naming.factory.url.pkgs", "org.jboss.naming");
props.setProperty("java.naming.provider.url", "localhost:1099");
Context context = new InitialContext(props);
return context;
}
}
trying to run the program I'm getting the following errors in console
.....Entering JMS example TopicConsumer....
Exception in thread "main" javax.naming.NameNotFoundException: zaneacademy_jms_tutorial_01 not bound
at org.jnp.server.NamingServer.getBinding(NamingServer.java:564)
at org.jnp.server.NamingServer.getBinding(NamingServer.java:572)
at org.jnp.server.NamingServer.getObject(NamingServer.java:578)
at org.jnp.server.NamingServer.lookup(NamingServer.java:317)
at org.jnp.server.NamingServer.lookup(NamingServer.java:291)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at sun.rmi.transport.Transport$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at sun.rmi.transport.Transport.serviceCall(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source)
at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknown Source)
at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source)
at sun.rmi.server.UnicastRef.invoke(Unknown Source)
at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unknown Source)
at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source)
at com.sun.proxy.$Proxy0.lookup(Unknown Source)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:669)
at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:629)
at javax.naming.InitialContext.lookup(Unknown Source)
at TopicConsumer.main(TopicConsumer.java:19)
As it says in the exception the zaneacademy_jms_tutorial_01 is not defined.
You need to configure it and assigne it to the topic/zaneacademy_jms_tutorial_01.
I would say, that the problem is your getInitialContext() which you configure mannaully, instead of returing the probably already configured context by new InitialContext();
I have tried many ways but i am always getting the same exception, PayPalRESTException: Connection timed out: connect . I have even downloaded sample code provided by paypal and tried using those code, but still same error.
Please help me to come out from this problem. or at least provide your opinion.
Error Log :
SEVERE: Servlet.service() for servlet [signup] in context with path [/PayPalDemo] threw exception [com.paypal.core.rest.PayPalRESTException: Connection timed out: connect] with root cause
java.net.ConnectException: Connection timed out: connect
at java.net.DualStackPlainSocketImpl.connect0(Native Method)
at java.net.DualStackPlainSocketImpl.socketConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.doConnect(Unknown Source)
at java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source)
at java.net.AbstractPlainSocketImpl.connect(Unknown Source)
at java.net.PlainSocketImpl.connect(Unknown Source)
at java.net.SocksSocketImpl.connect(Unknown Source)
at java.net.Socket.connect(Unknown Source)
at sun.security.ssl.SSLSocketImpl.connect(Unknown Source)
at sun.net.NetworkClient.doConnect(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.http.HttpClient.openServer(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.<init>(Unknown Source)
at sun.net.www.protocol.https.HttpsClient.New(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.getNewHttpClient(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.plainConnect(Unknown Source)
at sun.net.www.protocol.https.AbstractDelegateHttpsURLConnection.connect(Unknown Source)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at java.net.HttpURLConnection.getResponseCode(Unknown Source)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getResponseCode(Unknown Source)
at com.paypal.core.HttpConnection.execute(HttpConnection.java:93)
at com.paypal.core.rest.OAuthTokenCredential.generateOAuthToken(OAuthTokenCredential.java:132)
at com.paypal.core.rest.OAuthTokenCredential.generateAccessToken(OAuthTokenCredential.java:95)
at com.paypal.core.rest.OAuthTokenCredential.getAccessToken(OAuthTokenCredential.java:86)
at com.paypal.util.AccessTokenGenerator.getAccessToken(AccessTokenGenerator.java:20)
at com.paypal.util.AppHelper.createCreditCard(AppHelper.java:54)
at com.paypal.controller.UserServlet.handleSignup(UserServlet.java:268)
at com.paypal.controller.UserServlet.doPost(UserServlet.java:117)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:304)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:240)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:164)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:498)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:100)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:562)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:394)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:243)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:166)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:302)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
I have visited several blogs also for figure out this problem but they suggested to check request URL.
I am using sendbox environment so i have provided following url :
https://api.sandbox.paypal.com
This is my SDK configuration file :
# Connection Information
http.ConnectionTimeOut=5000
http.Retry=1
http.ReadTimeOut=30000
http.MaxConnection=100
# HTTP Proxy configuration
# If you are using proxy set http.UseProxy to true and replace the following values with your proxy parameters
http.UseProxy=false
#http.ProxyPort=8080
#http.ProxyHost=127.0.0.1
#http.ProxyUserName=null
#http.ProxyPassword=null
#Set this property to true if you are using the PayPal SDK within a Google App Engine java app
http.GoogleAppEngine = false
# Service Configuration
service.EndPoint=https://api.sandbox.paypal.com
clientID=EOJ2S-Z6OoN_le_KS1d75wsZ6y0SFdVsY9183IvxFyZp (changed my own)
clientSecret=EClusMEUk8e9ihI7ZdVLF5cZ6y0SFdVsY9183IvxFyZp (changed my own)
Servlet File :
package com.paypal.api.payments.servlet;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import com.paypal.api.payments.Address;
import com.paypal.api.payments.Amount;
import com.paypal.api.payments.Authorization;
import com.paypal.api.payments.CreditCard;
import com.paypal.api.payments.Details;
import com.paypal.api.payments.FundingInstrument;
import com.paypal.api.payments.Payer;
import com.paypal.api.payments.Payment;
import com.paypal.api.payments.Transaction;
import com.paypal.api.payments.util.GenerateAccessToken;
import com.paypal.core.rest.APIContext;
import com.paypal.core.rest.PayPalRESTException;
import com.paypal.core.rest.PayPalResource;
public class GetAuthorizationServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private static final Logger LOGGER = Logger
.getLogger(GetAuthorizationServlet.class);
public void init(ServletConfig servletConfig) throws ServletException {
InputStream is = GetAuthorizationServlet.class
.getResourceAsStream("/sdk_config.properties");
try {
System.out.println("in read::");
PayPalResource.initConfig(is);
} catch (PayPalRESTException e) {
e.printStackTrace();
LOGGER.fatal(e.getMessage());
}
}
#Override
protected void doGet(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
doPost(req, resp);
}
#Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException {
APIContext apiContext = null;
String accessToken = null;
try {
accessToken = GenerateAccessToken.getAccessToken();
System.out.println("Access Token ::"+accessToken);
} catch (PayPalRESTException e) {
e.printStackTrace();
req.setAttribute("error", e.getMessage());
}
req.getRequestDispatcher("response.jsp").forward(req, resp);
}
}
Utility file that will get token from paypal
package com.paypal.util;
import com.paypal.core.ConfigManager;
import com.paypal.core.rest.OAuthTokenCredential;
import com.paypal.core.rest.PayPalRESTException;
public class AccessTokenGenerator {
private static String accessToken;
public static String getAccessToken() throws PayPalRESTException {
if (accessToken == null) {
// ClientID and ClientSecret retrieved from configuration
String clientID = ConfigManager.getInstance().getValue("clientID");
String clientSecret = ConfigManager.getInstance().getValue("clientSecret");
accessToken = new OAuthTokenCredential(clientID, clientSecret).getAccessToken();
}
return accessToken;
}
}
Thanks in advanced.
I was facing this problem continuously since last 9 hrs but now i found the solution.
There is no error in code implementation but my firewall was not let them go to connect.
When i was turned off my firewall from control panel then all code works perfectly.
Thanks you