GetServletContext

Hi all,
I have a realy simple question (I hope): I developped a web service using BEA workshop and generate a jws. I want to use Spring in it and therefore need to get ServletContext to initialize the applicationContexr accordingly.
Unfortunately I don t know how to get the ServletContext from nmy WebService.
Can anybody help me ?

I just came across this post. Did you get an answer to this on this forum? did you post the same ? on the Spring forum? I think the Spring forum would be a better place.
I also have an interest in the answer>

Similar Messages

Java.lang.NullPointerException when calling getServletContext

Hi All,
When calling getServletContext from my servlet, i'm getting the following exception to my web client:
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
java.lang.NullPointerException
     javax.servlet.GenericServlet.getServletContext(GenericServlet.java:159)
     amdocs.checklist.UserPage.service(UserPage.java:126)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     amdocs.checklist.LoginFilter.doFilter(LoginFilter.java:65)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.27 logs.
My code is:
ServletContext sc = getServletContext();
RequestDispatcher rd = getServletContext().getRequestDispatcher("/Header");
rd.include(request, response);
It couldn't pass the call of getServletContext, Any idea why?
Thanks.

I haven't looked at the source yet, but I remember the api specs talking about the init(ServletConfig) method being called by the container.
The servlet will the set up it's references to objects (eg. the ServletContext) and calls the init() method.
So, if you override the init(ServletConfig) method the references will never be set up, and you will get null calling getServletContext().
So always use the init() method for any initialization of servlets.

Problem with getServletContext().getRequestDispatcher(....).forward()

We are using the latest SJSWS 7.0U8, but have the following problem:
During GET requests, getServletContext().getRequestDispatcher(....).forward(req,resp) works fine. But if the client issues a HEAD request, the servlet crashes with a ClassCastException. This bug was known for older versions of Tomcat but is fixed there. Maybe the fix could be applied to SJSWS internal catilina engine, too?
Are there any idea to walk around that problem, but let HEAD request still produce the correct headers for such a request(file size,...)?
[17/Feb/2010:19:39:28] failure ( 9211): for host a.b.c.d trying to HEAD /xxxxx, service-j2ee reports: StandardWrapperValve[xxx]: PWC1406: Servlet.service() for servlet xxx threw exception
java.lang.ClassCastExceptionNo stack trace is logged, but some time in the past i printed a complete stack trace in a catch block and the reason for that is:
The default HEAD handler in the servlet uses NoBodyResponse to wrap the original ServletResponse. The code of forward() later tries to cast this response object to a standard HttpServetResponse, what it is not. Tomcat/Jetty have a fix for it (I do not know the bug number).
This happens now very often, as newer browsers like Chrome sometimes issue HEAD requests during page display (not sure why).

Some more infos about the problem (the root cause is in the HttServlet.NoBodyResponse implementation in the Servlet Spec):
[https://issues.apache.org/bugzilla/show_bug.cgi?id=22290]
Some investigations about this (NoBodyResponse should extend HttpServletResponseWrapper and not Object): [http://closingbraces.net/2006/12/31/httpservletissues/], [http://closingbraces.net/2007/01/29/httpservletissuesfollowup/]
That is a similar stack trace I get (I get it with catilina classes, but same root cause): [http://markmail.org/message/pbdcbav6y2vlzbfc] or ClassCastException in weblogic.servlet.internal.ServletResponseImpl
Edited by: thetaphi on Feb 17, 2010 11:34 AM

Java serverfaces & getServletContext() problems

Help needed. please
I am having problems getting this filter working. The problem is that
forward in the method isSystemAvaliable does not work as expected. What happens is the
that I get a 'File not found: /subDir/DataSetProgressServlet' error where I wanted to forward to
'DataSetProgressServlet'.
The DataSetProgressServlet is mapped like this in web.xml:
     <servlet-mapping>
          <servlet-name>DataSetProgressServlet</servlet-name>
          <url-pattern>/DataSetProgressServlet</url-pattern>
     </servlet-mapping>
The problem only occurs when I am trying to access a Java Server Faces page, all other servlets are working as expected.
The faces servlet is mapped like this:
     <servlet-mapping>
          <servlet-name>Faces Servlet</servlet-name>
          <url-pattern>/faces/*</url-pattern>
     </servlet-mapping>
     <servlet-mapping>
          <servlet-name>Faces Servlet</servlet-name>
          <url-pattern>*.faces</url-pattern>
     </servlet-mapping>
Can anybody help me out?
Thanks
import java.io.IOException;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class MyFilter implements javax.servlet.Filter {
     private FilterConfig m_filterConfig;
     public void init(FilterConfig p_config) throws ServletException {
          this.m_filterConfig = p_config;
     public void doFilter(ServletRequest req, ServletResponse resp,
               FilterChain chain) throws ServletException, IOException {
          if (req instanceof HttpServletRequest) {
               HttpServletResponse httpServletResponse = (HttpServletResponse) resp;
               HttpServletRequest httpReq = (HttpServletRequest) req;
               boolean isSystemAvailable;
               isSystemAvailable = isSystemAvailable(httpReq, httpServletResponse);
               if (!isSystemAvailable) {
                    return;
               chain.doFilter(req, resp);
     public final boolean isSystemAvailable(HttpServletRequest request,
               HttpServletResponse response) throws ServletException, IOException {
          try {
               if (true) {
                    m_filterConfig.getServletContext().getRequestDispatcher(
                              "DataSetProgressServlet").forward(request, response);
                    return false;
               return false;
          } catch (Exception ce) {
               return true;
      * @see javax.servlet.Filter#void ()
     public void destroy() {
          this.m_filterConfig = null;
}

leonorafromarcadia wrote:
Java update does not installcorrectly on my mac and chat is intermittent in all games
Cannot play crosswords because no letters type in squares. Can anyone help with this issue?
You are going to have to tell us exactly what type of installation problems you are having w/Java? Any error messages? What do they say? Where did you download Java from? Which browser & version are you using?
I also play games on Pogo, recently updated Java and so far no problems playing their games. Although I do have different OS'es than you. I use both SL (MBP) & ML (iMac).
I did have to repair permissions and restart my computer a few times for the Java to "take" as I had to do several Java installations & one applet installation.
Java for OS X 2013-003
Java updates available for OS X on April 16, 2013

Cant reach the parent's getServletContext() method

Hi there ,
While implementing MVC architecture ,
I made an abstract ParentController.java which is extended by ApplicationController.java. In the ApplicationController I am doing :
     // get the application object
     ServletContext app = getServletContext();
     // select login.jsp as the template
     RequestDispatcher disp;
     disp = app.getRequestDispatcher("index.jsp");
and at compile time I am getting:
ApplicationController.java:46: cannot resolve symbol
symbol : method getServletContext ()
Any idea? Thanks in advance for your comments .
Here are the code of the 2 classes :
package com.cisapps.gnotelecomservy.servlets;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
//import com.cisapps.gnotelecomservy.utils.TelecomServyConstants;
//import org.apache.log4j.Logger;
//import org.apache.log4j.xml.DOMConfigurator;
* This is the base servlet and all servlets of this application should extend this.
* This is an abstract class containing one abstract method doProcess().
* All the child classes should implement this method.
* Creation date: (12/09/2002 10:55:01 AM)
* @author:
* @version: 1.0
public abstract class ParentController extends javax.servlet.http.HttpServlet {
* constructor comment.
public ParentController() {
     super();
* This method forwards the request to the inherited servlets. If the session is expired or null then it
* redirects to the homepage/login page. If any exception occurs in any servlet,
* it will catch that exception and redirect it to error page.
* Creation date: (12/09/2002 10:55:01 AM)
* @param req javax.servlet.http.HttpServletRequest
* @param res javax.servlet.http.HttpServletResponse
* @exception javax.servlet.ServletException
* @exception java.io.IOException If any I/O error occurs
public void doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res) throws javax.servlet.ServletException, java.io.IOException
          HttpSession session = null;
          try
          session = req.getSession(false);
          if(session == null)
               PrintWriter out=res.getWriter();
               res.setContentType("text/html");
               out.println("html");
/*               out.println("body on--load=\"window.location.href='"+req.getContextPath()+"\jsp\index.jsp"+"'\""); */
               out.println("body");
               out.println("html");
          else
               session = req.getSession(true);
               session.setMaxInactiveInterval(1800);
               doProcess(req, res);
     catch(Exception e)
          // forwarding to error page
          String errMsg = e.getMessage();
          System.out.println("Error occured : "+e.toString());
          req.setAttribute("errMessage",errMsg);
          RequestDispatcher rd = getServletContext().getRequestDispatcher("jsp/error_page.jsp");
          rd.forward(req,res);
* Handle the POST method. To handle POST, we will simple pass the request to the GET method
* Creation date: (12/09/2002 10:55:01 AM)
* @param req javax.servlet.http.HttpServletRequest
* @param res javax.servlet.http.HttpServletResponse
* @exception javax.servlet.ServletException
* @exception java.io.IOException
public void doPost(HttpServletRequest req, HttpServletResponse res) throws javax.servlet.ServletException, java.io.IOException
     doGet(req,res);
* This method receive the DataSource instance from the servletcontext (application).
* If that instance is null then it create a new one and save it in application scope.
* Creation date: (12/09/2002 10:55:01 AM)
public void init(ServletConfig config) throws ServletException
     super.init(config);
* This is the abstract method which is implemented by every child class.
* Creation date: (06/06/2002 11:04:17 AM)
* @exception javax.servlet.Exception
public abstract void doProcess(HttpServletRequest req, HttpServletResponse res) throws Exception;
package com.cisapps.gnotelecomservy.servlets;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class ApplicationController extends com.cisapps.gnotelecomservy.servlets.ParentController {
* ApplicationController constructor comment.
public ApplicationController() {
     super();
* This method forwards the request to the inherited servlets. If the session is expired or null then it
* redirects to the homepage/login page. If any exception occurs in any servlet,
* it will catch that exception and redirect it to error page.
* Creation date: (12/09/2002 10:55:01 AM)
* @param req javax.servlet.http.HttpServletRequest
* @param res javax.servlet.http.HttpServletResponse
* @exception javax.servlet.ServletException
public void doProcess(HttpServletRequest request, HttpServletResponse response)     throws Exception
     HttpSession session = request.getSession(false);
     response.setContentType("text/html");
     // Save the message in the request for login.jsp
     request.setAttribute("message", "test");
     // get the application object
     ServletContext app = getServletContext();
     // select login.jsp as the template
     RequestDispatcher disp;
     disp = app.getRequestDispatcher("index.jsp");
     // forward the request to the template
     disp.forward(request, response);
}

Hi,
I've modified few lines, please use them in ur code. It will work.
package com.cisapps.gnotelecomservy.servlets;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
//import com.cisapps.gnotelecomservy.utils.TelecomServyConstants;
//import org.apache.log4j.Logger;
//import org.apache.log4j.xml.DOMConfigurator;
* This is the base servlet and all servlets of this application should extend this.
* This is an abstract class containing one abstract method doProcess().
* All the child classes should implement this method.
* Creation date: (12/09/2002 10:55:01 AM)
* @author:
* @version: 1.0
public abstract class ParentController extends javax.servlet.http.HttpServlet {
//*************Line modified here, new variable added**************//
//Declare a ServletContext object here say myServletContext
       protected ServletContext myServletContext;
* constructor comment.
public ParentController() {
super();
* This method forwards the request to the inherited servlets. If the session is expired or null then it
* redirects to the homepage/login page. If any exception occurs in any servlet,
* it will catch that exception and redirect it to error page.
* Creation date: (12/09/2002 10:55:01 AM)
* @param req javax.servlet.http.HttpServletRequest
* @param res javax.servlet.http.HttpServletResponse
* @exception javax.servlet.ServletException
* @exception java.io.IOException If any I/O error occurs
public void doGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res) throws javax.servlet.ServletException, java.io.IOException
HttpSession session = null;
try
session = req.getSession(false);
if(session == null)
PrintWriter out=res.getWriter();
res.setContentType("text/html");
out.println("html");
/* out.println("body on--load=\"window.location.href='"+req.getContextPath()+"\jsp\index.jsp"+"'\""); */
out.println("body");
out.println("html");
else
session = req.getSession(true);
session.setMaxInactiveInterval(1800);
doProcess(req, res);
catch(Exception e)
// forwarding to error page
String errMsg = e.getMessage();
System.out.println("Error occured : "+e.toString());
req.setAttribute("errMessage",errMsg);
RequestDispatcher rd = getServletContext().getRequestDispatcher("jsp/error_page.jsp");
rd.forward(req,res);
* Handle the POST method. To handle POST, we will simple pass the request to the GET method
* Creation date: (12/09/2002 10:55:01 AM)
* @param req javax.servlet.http.HttpServletRequest
* @param res javax.servlet.http.HttpServletResponse
* @exception javax.servlet.ServletException
* @exception java.io.IOException
public void doPost(HttpServletRequest req, HttpServletResponse res) throws javax.servlet.ServletException, java.io.IOException
doGet(req,res);
* This method receive the DataSource instance from the servletcontext (application).
* If that instance is null then it create a new one and save it in application scope.
* Creation date: (12/09/2002 10:55:01 AM)
public void init(ServletConfig config) throws ServletException
super.init(config);
//initialize the myServletContext variable here, and use it whereever you want.
myServletContext = config.getServletContext();
* This is the abstract method which is implemented by every child class.
* Creation date: (06/06/2002 11:04:17 AM)
* @exception javax.servlet.Exception
public abstract void doProcess(HttpServletRequest req, HttpServletResponse res) throws Exception;
package com.cisapps.gnotelecomservy.servlets;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class ApplicationController extends com.cisapps.gnotelecomservy.servlets.ParentController {
* ApplicationController constructor comment.
public ApplicationController() {
super();
* This method forwards the request to the inherited servlets. If the session is expired or null then it
* redirects to the homepage/login page. If any exception occurs in any servlet,
* it will catch that exception and redirect it to error page.
* Creation date: (12/09/2002 10:55:01 AM)
* @param req javax.servlet.http.HttpServletRequest
* @param res javax.servlet.http.HttpServletResponse
* @exception javax.servlet.ServletException
public void doProcess(HttpServletRequest request, HttpServletResponse response) throws Exception
HttpSession session = request.getSession(false);
response.setContentType("text/html");
// Save the message in the request for login.jsp
request.setAttribute("message", "test");
// get the application object
//**************Line modified here****************//
//No need of app anymore... so commenting the next line
//ServletContext app = getServletContext();
// select login.jsp as the template
RequestDispatcher disp;
//***************Line modified here******************//
//disp = app.getRequestDispatcher("index.jsp");
dips = myServletContext.getRequestDispatcher("index.jsp");
// forward the request to the template
disp.forward(request, response);
} Try this, i hope it will solve your problem.
Regards
Goodieguy

Error 500: javax.servlet.http.HttpSession: method getServletContext()Ljavax

I think that I have an older version of servlet class files... is there any way to solve the following issue?
in old version, getServletContext() method isn't included in HttpSession object. is there any way to get around this problem? cuz our client has an old version... i am not sure if it's possible...
HttpSession session = e.getSession () ;
// Retreive our context so we can initialize the runtime settings.
ServletContext context = session.getServletContext () ;
i'd greatly appreciated in advance...

sorry, in e.getSession(), "e" object comes from "HttpSessionBindingEvent"

How use InputStream tt=getServletContext().getResourceAsStream("mf.jasper")

sir i import all rlated class
import com.sun.rave.web.ui.appbase.AbstractPageBean;
import com.sun.rave.web.ui.component.Body;
import com.sun.rave.web.ui.component.Form;
import com.sun.rave.web.ui.component.Head;
import com.sun.rave.web.ui.component.Html;
import com.sun.rave.web.ui.component.Link;
import com.sun.rave.web.ui.component.Page;
import javax.faces.FacesException;
import com.sun.rave.web.ui.component.Button;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import javax.imageio.*;
import java.awt.image.*;
import java.awt.*;
use this code in button press event
public String button1_action() {
InputStream forms = getServletContext().getResourceAsStream("/mfa.jasper");
return null;
but sir this line give me error
i need send jasperviewer to client by streem
sir how i use streem
please send me code how i send jasperviewer to client through streem
thank

Found the problem. I used DocumentBuilderFactory to create the Source. By default, it is not namespace aware.
DocumentBuilderFactory.setNamespaceAware(true)does the trick.
HTH, Markus

NullPointerException in SessionData.removeAttribute, getServletContext

I am trying to setup Session replication on BEA10 installed on my non multihomed windows machine.
          I have added two managed servers (MS1, MS2) to the cluster (MYCLUSTER) and have set the cluster MYCLUSTER as the target for my web application.
          Information about my setup is as follows -
          1. I have set my machine to have static IP
          2. For load balancing, I have installed weblogic.servlet.proxy.HttpClusterServlet on third managed server (MS3). This third server is not part of the cluster, MYCLUSTER
          3. Load balancing is working fine because when I hit the URL of the app the request goes in round-robin to each server in the cluster.
          This I have verified from the logs of both the servers (MS1, MS2).
          4. When I hit one of the servers (say MS1) and login into the application the app starts working fine and I am able to navigate through different pages.
          Now the problem is that when I shutdown the MS1 which has responded to the current session and then try to navigate further in the application, I get following exceptions in the log file of the MS2.
          Point worth noting is that some part of the session has got replicated to the MS2 because I remain logged-in into the application when I try to send request to the app which is now being served by MS2.
          The User Info is available in session in the second server and also appears on the page.
          5. I have set <persistent-store-type>replicated</persistent-store-type> under session-descriptor in weblogic.xml
          6. I have deployed app as exploded WAR and have set <page-check-seconds>0</page-check-seconds> for jsp hot deployment.
          ####<Aug 30, 2007 10:53:51 AM MST> <Error> <HTTP> <VCHADD745> <Server9080> <[ACTIVE] ExecuteThread: '10' for queue: 'weblogic.kernel.Default (self-tuning)'> <<WLS Kernel>> <> <> <1188496431495> <BEA-101020> <[weblogic.servlet.internal.WebAppServletContext@2226390 - appName: 'mywebapp', name: 'mywebapp.war', context-path: '/mywebapp'] Servlet failed with Exception
          java.lang.NullPointerException
               at weblogic.servlet.internal.session.SessionData.removeAttribute(SessionData.java:627)
               at weblogic.servlet.internal.session.SessionData.removeAttribute(SessionData.java:586)
               at weblogic.servlet.internal.session.ReplicatedSessionData.removeAttribute(ReplicatedSessionData.java:523)
               at com.mypackage.SomeSessionContext.clear(SomeSessionContext.java:893)
          java.lang.NullPointerException
               at weblogic.servlet.internal.session.SessionData.getServletContext(SessionData.java:233)
               at com.mypackage.SomeSessionContext.getApplicationBean(SomeSessionContext.java:199)                    Code at line 893 SomeSessionContext.java
          this.session.removeAttribute(element);                    Code at 199 in SomeSessionContext.java
          ServletContext servletContext = this.session.getServletContext();                    Please help me resolve the issue.

I was able to resolve the issue. Actually we were keeping handle to session object in another object which was being stored in session. Since session object is not serializable its reference in the replicated object was null. This was causing the NPE when on the replicated server code was trying to get something from null session refrence.

GetServletContext().getAttribute problems

I try to deploy the "testfile.war" in WebLogic 6.1
          I put it inside the C:\bea\wlserver6.1\config\mydomain\applications
          folder.
          But I got the following errors, after I restart the server
          Seems to be problems with a path or missing packages that I should
          import.
          Anyone got any diea?
          Compilation of
          'C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java'
          failed:
          C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java:126:
          cannot
          resolve symbol probably occurred due to an error in
          /include/application_realpath.jsp line 2: if
          C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java:127:
          cannot resolve
          symbol probably occurred due to an error in
          /include/application_realpath.jsp line 3:
          getServletContext().setAttribute("appRealPath",
          getServletContext().getRealPath("/"));
          C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java:127:
          cannot resolve
          symbol probably occurred due to an error in
          /include/application_realpath.jsp line 3:
          getServletContext().setAttribute("appRealPath",
          getServletContext().getRealPath("/"));


Richard,
          Since you are seeing muliptle definitions of sc, you should be able change the code to look like:
          <%
          sc.setAttribute("appRealPath",getServletConfig().getServletContext().getRealPath("/"));
          out.println(Kit.dispLkup(getServletConfig().getServletContext().getAttribute("appRealPath"),null));
          out.println(" The appRealPath is: " + getServletConfig().getServletContext().getRealPath("/"));
          %>
          Thanks,
          Simon
          Developer Relations Engineer
          BEA Support
          Richard wrote:
          > On Tue, 19 Mar 2002 11:23:57 -0700, Simon Nunn
          > <[email protected]> wrote:
          >
          > Simon,
          >
          > I did the following in my code:
          >
          > <%
          >
          > ServletContext sc = getServletConfig().getServletContext();
          > sc.setAttribute("appRealPath",sc.getRealPath("/"));
          > out.println(Kit.dispLkup(sc.getAttribute("appRealPath"),null));
          > out.println(" The appRealPath is: " + sc.getRealPath("/"));
          >
          > %>
          >
          > I have "ServletContext sc" defined in only one file.
          > After I restart the server, the Weblogic server would generate the
          > servlets automatically from my JSP files. The previous errors are now
          > gone, but now there are some new errors. The following errors occur
          > in those generate servlets.
          >
          >
          > C:\bea\wlserver6.1\config\mydomain\applications\.wlnotdelete\WEB-INF\_tmp_war_myserver_myserver_progress\jsp_servlet\_main\__todo_add_form.java:158:
          > sc is already defined in
          > _jspService(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
          > probably occurred due to an error in /include/application_realpath.jsp
          > line 3:
          > ServletContext sc = getServletConfig().getServletContext();
          >
          > C:\bea\wlserver6.1\config\mydomain\applications\.wlnotdelete\WEB-INF\_tmp_war_myserver_myserver_progress\jsp_servlet\_main\__todo_add_form.java:208:
          > sc is already defined in
          > _jspService(javax.servlet.http.HttpServletRequest,javax.servlet.http.HttpServletResponse)
          > probably occurred due to an error in /include/application_realpath.jsp
          > line 3:
          > ServletContext sc = getServletConfig().getServletContext();
          >
          > Thanks
          >
          > >Richard,
          > >
          > > I believe that your code should look like:
          > > <%
          > >
          > >ServletContext sc = getServletConfig().getServletContext();
          > >sc.setAttribute("appRealPath",sc.getRealPath("/"));
          > >out.println(" The appRealPath is: " + sc.getRealPath("/"));
          > >%>
          > >
          > >I tested this and it works for me under 6.1 sp2.
          > >
          > >Thanks,
          > > Simon
          > > Developer Relations Engineer
          > > BEA Support
          > >
          > >Richard wrote:
          > >
          > >> I try to deploy the "testfile.war" in WebLogic 6.1
          > >> I put it inside the C:\bea\wlserver6.1\config\mydomain\applications
          > >> folder.
          > >>
          > >> But I got the following errors, after I restart the server
          > >> Seems to be problems with a path or missing packages that I should
          > >> import.
          > >> Anyone got any diea?
          > >>
          > >> Compilation of
          > >> 'C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java'
          > >> failed:
          > >>
          > >>
          > >> C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java:126:
          > >> cannot
          > >> resolve symbol probably occurred due to an error in
          > >> /include/application_realpath.jsp line 2: if
          > >>
          > >> C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java:127:
          > >> cannot resolve
          > >> symbol probably occurred due to an error in
          > >> /include/application_realpath.jsp line 3:
          > >> getServletContext().setAttribute("appRealPath",
          > >> getServletContext().getRealPath("/"));
          > >>
          > >> C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java:127:
          > >> cannot resolve
          > >> symbol probably occurred due to an error in
          > >> /include/application_realpath.jsp line 3:
          > >> getServletContext().setAttribute("appRealPath",
          > >> getServletContext().getRealPath("/"));

GetServletContext().setAttribute problems

I try to deploy the "testfile.war" in WebLogic 6.1
          I put it inside the C:\bea\wlserver6.1\config\mydomain\applications
          folder.
          But I got the following errors, after I restart the server
          Seems to be problems with a path or missing packages that I should
          import.
          Anyone got any diea?
          Compilation of
          'C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java'
          failed:
          C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java:126:
          cannot
          resolve symbol probably occurred due to an error in
          /include/application_realpath.jsp line 2: if
          C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java:127:
          cannot resolve
          symbol probably occurred due to an error in
          /include/application_realpath.jsp line 3:
          getServletContext().setAttribute("appRealPath",
          getServletContext().getRealPath("/"));
          C:\bea\wlserver6.1\config\mydomain\applications\testfile\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servlet\_main\__testing_page.java:127:
          cannot resolve
          symbol probably occurred due to an error in
          /include/application_realpath.jsp line 3:
          getServletContext().setAttribute("appRealPath",
          getServletContext().getRealPath("/"));


I try to deploy the "testfile.war" in WebLogic 6.1
I put it inside the
C:\bea\wlserver6.1\config\mydomain\applications
folder.
But I got the following errors, after I restart the
server
Seems to be problems with a path or missing packages
that I should
import.
Anyone got any diea?Yep .. hope u get this because inside a jsp page to get the servlet context you have to first get the page context and from that u have to get the servlet context.,
C:\bea\wlserver6.1\config\mydomain\applications\testfil
\WEB-INF\_tmp_war_myserver_myserver_testfile\jsp_servle
\_main\__testing_page.java:127:
cannot resolve
symbol probably occurred due to an error in
/include/application_realpath.jsp line 3:
getServletContext().setAttribute("appRealPath",
getServletContext().getRealPath("/"));
why do you use getServletContext() method , it is already an implicit variable in the jsp page as "application"
just use application.setAttribute()
application.getRealPath()
regards,
Arun.N

GetServletContext().getInitParameter("param_name")

Hi,
I am trying to get a parameter from the web.xml file.
In the Web.xml file I enter the following:
<context-param>
<param-name>driver</param-name>
<param-value>sun.jdbc.odbc.JdbcOdbcDriver</param-value>
</context-param>
in my servlet I write
getServletContext().getInitParameter("driver")
While compiling the program I get the following error message:
Error: E:\VisualCafe\Projects\luxwood\ClientsServlet.java(69): Method getInitParameter(java.lang.String) not found in javax.servlet.ServletContext
What should I do
Tnx Eli

Sorry, my mistake. The syntax you stated was correct.
It seems there may be a problem with your servlet.jar. Get the latest copy of Tomcat 3.2/3 and try again.
Anthony

WL6.1 sp2: It seems there isnt' HttpSession.getServletContext() method

          Hi all,
          In the release notes (features & changes section) we can read that the getServletContext()
          method has been added to HttpSession but we get an NoSuchMethodError exception when
          we invoke it.
          Whats going wrong?
          TIA.
          Pablo.


          Thanks all,
          So, there is no way to get the ServletContext from the Session?
          We need to do it without the servlet (we use the wep app context to store global
          common data for all the users).
          Deepak Vohra <[email protected]> wrote:
          >ServletContext ctx=getServletConfig().getServletContext();
          >
          >Pablo wrote:
          >
          >> Hi all,
          >>
          >> In the release notes (features & changes section) we can read that the
          >getServletContext()
          >> method has been added to HttpSession but we get an NoSuchMethodError exception
          >when
          >> we invoke it.
          >>
          >> Whats going wrong?
          >>
          >> TIA.
          >> Pablo.
          >

Servlet init block doesn't work with getServletContext().getRequestDispat..

Hi Everyone,
I am getting null pointer exception when i have coded init method inside my servlet(inside that i am fetching init parameter passed from web,xml file) and while getting requestdispatcher from context.
if i get requestdispatcher from request then it works fine. i dont understand reason behind this behaviour.
please give your valueable comment.
find code below:
public void init(ServletConfig config) throws ServletException
enum1 = config.getInitParameterNames();
while(enum1.hasMoreElements()){
init_paramNm = (String)enum1.nextElement();
init_paramVal = config.getInitParameter(init_paramNm);
System.out.println("Name = "init_paramNm" and value = "+init_paramVal);
getting null pointer exception with this
RequestDispatcher rd = getServletContext().getRequestDispatcher("/ObjJSPtoServlet.jsp");
rd.forward(request, response);
work fine with
RequestDispatcher rd = request.getRequestDispatcher("/ObjJSPtoServlet.jsp");
rd.forward(request, response);

public void init(ServletConfig config)
throws ServletException
Called by the servlet container to indicate to a servlet that the servlet is being placed into service. See Servlet.init(javax.servlet.ServletConfig).
This implementation stores the ServletConfig object it receives from the servlet container for later use. When overriding this form of the method, call super.init(config). ...
[More Info|http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/GenericServlet.html#init%28javax.servlet.ServletConfig%29]

How To get getServletContext() object inside JSP from Eclipse IDE

Dear friends,
I can access methods in getServletContext class from Netbeans in my JSP web project using the following steps.
String path=getServletContext().getRealPath("\mypath");
. But In Eclipse when i try to build,it says that "can not find method -getServletContext()".
How to get this object in my JSP Scriptlet From Eclipse IDE? Plz help me?

use Expression Language instead.
I would.
http://java.sun.com/j2ee/1.4/docs/tutorial/doc/JSPIntro7.html
regards,i

HttpSesssion / getServletContext()

          Hello,
          we have the WLS 6.1 and it should support the Servlet API 2.3, shouldn't it?
          Since API 2.3 there is the method getServletContext() in HttpSession.
          In our "weblogic.jar" from SP4 I can't find this method in this class.
          What is the problem?
          Thanks in advance!
          Stephan Sann


          Stephan,
          WebLogic Server 6.1 fully supports HTTP servlets as defined in the Servlet 2.3
          Proposed Final Draft, version 1 specification.
          The getServletContext() method was added to HttpSession in the
          Final version specification.
          WebLogic Server 6.1 does not support the getServletContext() in HttpSession.
          Deepak
          "Stephan Sann" <[email protected]> wrote:
          >
          >Hello,
          >
          >we have the WLS 6.1 and it should support the Servlet API 2.3, shouldn't
          >it?
          >
          >Since API 2.3 there is the method getServletContext() in HttpSession.
          >
          >In our "weblogic.jar" from SP4 I can't find this method in this class.
          >
          >What is the problem?
          >
          >Thanks in advance!
          >
          >Stephan Sann

Trouble with pageContext.getServletContext().getResourceAsStream(..)

Hi community,
I'm developing a JSP-Taglib that has to load static resources (like javascript or css files) from the webserver it runs on.
In the Tag I'm writing I use the following code:
InputStream stream = pageContext.getServletContext().getResourceAsStream("js/myFile.js");So I get a reference to an InputStream called stream, so far so good.
When I change the resource in the filesystem, I expected to get a Stream with the new content, but this is not the case. I get a Stream that contains the old resource, even it is not longer there.
Strange enough, if I change the resource again, the new stream delivers the right content.
This is reproducible, the first time it works, the second not , the third again, the 4th not, the 5th again, .. and so on..
It makes me headache, what't happening here?
I use Java5 in eclipse 3.2.1 with Tomcat 5.5.
Thanks for your help
Daniel

no, I don't restart the webcontainer, thats the trick the application does, I check the lastModified value from the file against the old one, and if it differs, I reload the file.
Even if the ServletContext is created at startup, it should deliver reliable a valid stream of the file.

GetServletContext

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