We Keep Coding

Caused by: java.lang.NoClassDefFoundError: io/jsonwebtoken/Jwts

i am using jjwt-0.9.1.jar and runtime gives this exception for jersey reset API call.
When i use this code using java main() method, its works perfectly but when i call from servlet to that class, the method throws exception.
import io.jsonwebtoken.JwtBuilder;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import java.util.Date;
import java.util.UUID;
public String createJWTToken() {
String id = UUID.randomUUID().toString().replace("-", "");
//The JWT signature algorithm we will be using to sign the token
// SignatureAlgorithm signatureAlgorithm = SignatureAlgorithm.HS256;
long nowMillis = System.currentTimeMillis();
Date now = new Date(nowMillis);
//Let's set the JWT Claims
JwtBuilder builder = null;
try {
builder = Jwts.builder().setId(id).setHeaderParam("typ", "JWT")
.setIssuedAt(now)
.setSubject("")
.setIssuer(API_KEY)
.signWith(SignatureAlgorithm.HS256,SECRET_KEY.getBytes("UTF-8"));
//if it has been specified, let's add the expiration
if (ttlMillis >= 0) {
long expMillis = nowMillis + ttlMillis;
Date exp = new Date(expMillis);
builder.setExpiration(exp);
}
} catch (Exception e) {
e.printStackTrace();
}
return builder.compact();//Builds the JWT and serializes it to a compact, URL-safe string
}
When call servlet to java class method i.e.createJWTToken() gives following exception in tomcat.
javax.servlet.ServletException: Servlet execution threw an exception
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:328)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at com.test.lms.servlets.GlobalFilter.doFilter(GlobalFilter.java:204)
at com.test.lms.servlets.GlobalFilter.doFilter(GlobalFilter.java:48)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210) at com.general.FilterDemo.doFilter(FilterDemo.java:312)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:224)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:169)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:579)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:307) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source) Caused by: java.lang.NoClassDefFoundError: io/jsonwebtoken/Jwts
at com.zoom.JWTTokenGeneration.createJWTToken(JWTTokenGeneration.java:31)
at com.zoom.Utilities.setMeeting(Utilities.java:571)
at com.general.InsertController.doPost(InsertController.java:377)
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:305) ... 22 more Caused by: java.lang.ClassNotFoundException: io.jsonwebtoken.Jwts
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1701)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1546) ... 28 more

The exception is java.lang.NoClassDefFoundError: io/jsonwebtoken/Jwts
Check the Jar file(jwt) is packaged in the build or not?

java.lang.NullPointerException occurs when i update?

I got Null pointer exception
"java.lang.NullPointerException"
refer below code for reference
Everything should be fine but not able to update data to the database(mySql)
<% try{
//reading request parameters
String projectName=request.getParameter("projectName").trim();
String status=request.getParameter("status").trim();
//String user = session.getAttribute("user").toString();
Connection connection = DAO.getConnection();
PreparedStatement pstmt = connection.prepareStatement("update project set status=? where projectName=?");
pstmt.setString(1,status);
pstmt.executeUpdate();
out.println("<h2 style='color:green'>Project Status has been updated</h2>");
}
catch(Exception ex)
{
ex.printStackTrace();
out.println("<h2 style='color:red'>Please login to update your Status</h2>");
}
%>
Not able to update because of exception
refer below
Please anyone suggest me how to solve this exception...
java.lang.NullPointerException at org.apache.jsp.MyWorkPanelAction_jsp._jspService(MyWorkPanelAction_jsp.java:93)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:432)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:390)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728) at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)

You missed the projectName...Try the code below
try{
//reading request parameters
String projectName=request.getParameter("projectName").trim();
String status=request.getParameter("status").trim();
//String user = session.getAttribute("user").toString();
Connection connection = DAO.getConnection();
PreparedStatement pstmt = connection.prepareStatement("update project set status=? where projectName=?");
pstmt.setString(1,status);
pstmt.setString(2,projectName); //Try this
pstmt.executeUpdate();
out.println("<h2 style='color:green'>Project Status has been updated</h2>");
}
catch(Exception ex)
{
ex.printStackTrace();
out.println("<h2 style='color:red'>Please login to update your Status</h2>");
}

Unable to insert records in to database

I get an error when I am trying to insert records using prepared statement:
Registration Servlet INSIDE try block:
Printing USER Values
====================
john
smith
john#gmail.com
john
Connection is: null
username: rth
password: rth
driver: oracle.jdbc.OracleDriver
url is: jdbc:oracle:thin:#localhost:1521:orcl
####Record insertion error in Registration DAO####
java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at com.RTH.commons.DBConnection.getConnection(DBConnection.java:42)
at com.RTH.DAO.RegistrationDAO.insert(RegistrationDAO.java:29)
at com.RTH.Registration.RegistrationServlet.doPost(RegistrationServlet.java:43)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
java.sql.SQLException: No suitable driver found for jdbc:oracle:thin:#localhost:1521:orcl
at java.sql.DriverManager.getConnection(DriverManager.java:689)
at java.sql.DriverManager.getConnection(DriverManager.java:247)
at com.RTH.commons.DBConnection.getConnection(DBConnection.java:49)
at com.RTH.DAO.RegistrationDAO.insert(RegistrationDAO.java:29)
at com.RTH.Registration.RegistrationServlet.doPost(RegistrationServlet.java:43)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
java.lang.NullPointerException
at com.RTH.DAO.RegistrationDAO.insert(RegistrationDAO.java:31)
at com.RTH.Registration.RegistrationServlet.doPost(RegistrationServlet.java:43)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:936)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1004)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
I am able to print connection details and also the properties file:
public class DBConnection {
public static Connection getConnection() throws IOException, ClassNotFoundException, SQLException
{
Properties props = new Properties();
props.load(DBConnection.class.getResourceAsStream("DBDetails.properties"));
String username = props.getProperty("dbusername");
String password = props.getProperty("dbpassword");
String driver = props.getProperty("driver");
String url = props.getProperty("url");
Class.forName(driver);
Connection con = DriverManager.getConnection(url, username, password);
System.out.println("Connection is: " + con);
System.out.println("username: " + username);;
System.out.println("password: " + password);;
System.out.println("driver: "+ driver);;
System.out.println("url is: " + url);;
return con;
}
public static void main(String[] args) throws IOException, ClassNotFoundException, SQLException {
DBConnection.getConnection();
}
}
RegistrationDao file:
public class RegistrationDAO {
public void insert(User user) {
try {
System.out.println("Printing USER Values");
System.out.println("====================");
System.out.println(user.getFirstName());
System.out.println(user.getLastName());
System.out.println(user.getEmail());
System.out.println(user.getPassword());
Connection con = DBConnection.getConnection();
String query = "insert into TBL_USER(USR_FIRST_NAME,USR_LST_NAME,USR_PRIMARY_EMAIL,USR_PASSWORD) values(?,?,?,?)";
PreparedStatement pst = con.prepareStatement(query);
pst.setString(1, user.getFirstName()); //prints value
pst.setString(2, user.getLastName()); //prints value
pst.setString(3, user.getEmail()); //prints value
pst.setString(4, user.getPassword()); //prints value
pst.executeUpdate();
} catch (Exception e) {
System.out.println("####Record insertion error in Registration DAO####");
e.printStackTrace();
}
}
}
Properties file:
dbusername=rth
dbpassword=rth
driver=oracle.jdbc.driver.OracleDriver
url=jdbc:oracle:thin:#localhost:1521:orcl
I have checked that the database username and password is not expired and still working. Connection test succeeded. All the column types are varchar2 200 bytes. I am not sure why it is still throwing error.

You are able to see the sysout statement as you must be running the program in your IDE where the properties file is in your classpath. Your properties file is not in your classpath when you deploy the app.
You can change the code as :
props.load(DBConnection.class.getResourceAsStream("../conf/DBDetails.properties"));
Create a directory 'conf' || to the lib folder containing your code(jars) and try running it.

The problem occurs a lot earlier in this very first line of your exception:
props.load(DBConnection.class.getResourceAsStream("DBDetails.properties"));
That means: the file "DBDetails.properties" is obviously not in the current directory nor in one of the class path settings.
Check, where the file is located and set the classpath accordingly or move it in to the right place.
EDIT AFTER UPDATE OF Q
Same with the oracle driver. The oracle driver class is not loaded, probably it's not on the class path as well - or even not present at all (what I would bet for, as this needs to be downloaded/installed explicitly from Oracle)
java.lang.ClassNotFoundException: oracle.jdbc.OracleDriver

Following these steps resolved my issue:
Removed ojdbc6-11.1.0.7.0.jar from the class path and added
ojdbc6.jar
Changed the driver name from:
driver=oracle.jdbc.OracleDriver to driver=oracle.jdbc.driver.OracleDriver
Pasted a ojdbc6.jar file to
apache-tomcat-7.0.35-windows-x86\apache-tomcat-7.0.35\lib folder
And it worked!!

Java exception in openConnection method (fetching data from html)

I have a problem getting the input stream using 'getInputStream' method for few URLs (most of the URLs works fine) although the URL seems to work via web browser.
I am using the following code:
public static String getContents(String uri, String encoding) {
StringBuffer sb = new StringBuffer();
URL url;
try {
url = new URL(uri);
URLConnection con = url.openConnection();
con.setReadTimeout(90000);
System.out.println("--------2.1:");//////////////////////////////////////////////////////////////
InputStream is = con.getInputStream();
System.out.println("--------2.2:"+is);/////////////////////////////////////////////////////////
BufferedReader br = new BufferedReader(new InputStreamReader(is));
// read lines from HTML
String line = null;
while ((line = br.readLine()) != null) {
sb.append(line);
}
} catch (Exception e) {
System.out.println("--------2.6:");//////////////////////////////////////////////////////
return null;
}
return sb.toString();
}
output:
--------2.1:http://infoscience.epfl.ch/oai2d?verb=ListIdentifiers&metadataPrefix=oai_dc
--------2.6:
Exception:
java.io.IOException: Server returned HTTP response code: 503 for URL: http://infoscience.epfl.ch/oai2d?verb=ListIdentifiers&metadataPrefix=oai_dc
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at com.irWizard.common.util.FileUtils.getContents(FileUtils.java:29)
at com.irWizard.web.controller.WizardController.getActualTotalOfRecords(WizardController.java:500)
at com.irWizard.web.controller.WizardController.validateSets(WizardController.java:419)
at com.irWizard.web.controller.WizardController.onSubmit(WizardController.java:242)
at com.irWizard.web.controller.BaseController.onSubmit(BaseController.java:127)
at org.springframework.web.servlet.mvc.SimpleFormController.processFormSubmission(SimpleFormController.java:258)
at org.springframework.web.servlet.mvc.AbstractFormController.handleInvalidSubmit(AbstractFormController.java:652)
at org.springframework.web.servlet.mvc.AbstractFormController.handleRequestInternal(AbstractFormController.java:257)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:45)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:798)
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:728)
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:396)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:350)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:222)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:171)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:953)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:408)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1023)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:589)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:312)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
It seems that it's code 503.
Does anyone know how it can be solved? (it works fine via browser).
Mike

Hibernate `Session is closed` exception even the session is not closed

I have a Coupons database, and using Hibernate I'm trying to get 5 rows.
This is the code:
public List<Coupon> getPage(int pageNum, boolean isActive) {
session = factory.openSession();
session.beginTransaction();
Query query;
if(isActive) {
query = session.createQuery("from Coupon where (NOW() < fadeoutDate)");
} else {
query = session.createQuery("from Coupon");
}
query.setFirstResult((pageNum - 1) * numCouponsPerPage);
query.setMaxResults(numCouponsPerPage);
List<Coupon> page = (List<Coupon>) query.list();
closeSession();
return page;
}
(numCouponsPerPage is a constant that equal 5)
When trying to get a page:
List<Coupon> p = cm.getPage(dpage,active.equalsIgnoreCase("true")); (dpage = 1, the second parameter return false),
I'm getting this error:
Dec 14, 2013 4:11:06 AM org.apache.catalina.core.StandardWrapperValve invoke
SEVERE: Servlet.service() for servlet [jsp] in context with path [/firstXDw] threw exception [An exception occurred processing JSP page /views/system/loadPage.jsp at line 30
27:
28: if (whatToLoad.equalsIgnoreCase("coupons")) {
29:
30: List<Coupon> p = cm.getPage(dpage,active.equalsIgnoreCase("true"));
31: for (Coupon c : p) {
32: out.println("<tr>");
33: out.println("<td>" + c.getId() + "</td>");
Stacktrace:] with root cause
org.hibernate.SessionException: Session is closed!
at org.hibernate.impl.AbstractSessionImpl.errorIfClosed(AbstractSessionImpl.java:72)
at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1768)
at implementations.Coupons.getPage(Coupons.java:130)
at org.apache.jsp.views.system.loadPage_jsp._jspService(loadPage_jsp.java:82)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:419)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:391)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
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:462)
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:395)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:250)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:188)
at org.apache.tomcat.util.net.JIoEndpoint$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)
Why is exception Session is closed thrown? I open the session at the first line of the function..
What is the problem and how to solve it?