IUser class not recognized in JSP page

Hi All,
I am trying to get the roles of the user logged in. I am getting the user name by using
IUserContext userContext = request.getUser();
String firstName = userContext.getFirstName();
How to get the roles of the user. When i am using IUser it is giving errors. I even included com.sap.security.api.jar file. But still it is not working.
Can somebody help me sort this problem.
Thank you,
Surendra.

Hi Surendra,
You can convert your IUserContext to IUser like this:
com.sapportals.portal.security.usermanagement.IUserFactory userFactory = WPUMFactory.getUserFactory();
com.sapportals.portal.security.usermanagement.IUser eP5User = userFactory.getEP5User(userContext);
Use IRoleFactory.getRolesOfUser(eP5User.getUniqueID(), true); method to get all assigned user roles recursively.
IRoleFactory roleFactory = UMFactory.getRoleFactory()
roleFactory.getRolesOfUser(eP5User.getUniqueID(), true);
https://media.sdn.sap.com/javadocs/NW04/SP12/ume/com/sap/security/api/IRoleFactory.html#getRolesOfUser(java.lang.String, boolean)
Greetings,
Praveen Gudapati

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Thank you for your valuable feedback duffymo. Could
you explain a little what you mean by "Putting .class
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Ankit_JIITU wrote:
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>
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====
Edited by: Zakir Hossain on Apr 23, 2009 11:19 AM

Hi here is solution,
later I will put a project for this solution, right now I am really busy with ADF implementation.
core changes is to solve my problem:
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Urgent: SAX parser bean is not working in JSP page

Hi All,
I have created a bean "ReadAtts" and included into a jsp file using
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Below are the details:
Java Bean: ReadAtts.java
package sax;
import java.io.*;
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String fname=args[0];
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JSP File:
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<jsp:useBean id="p" class="sax.ReadAtts"/>
Data after Parsing is.....
<%=p.parse"E:/Log.xml","/acq/service/metrics/system/stackUsage")%>
Expected Output:
The jsp file should print all the vector objects from the "ReadAtts" bean
Actual Output:
Data after Parsing.......[]
Thanks for your time.....
Newton
Bangalore. INDIA

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<%
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<%
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%>

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<table width="99%" border="0" align="center" cellpadding="1" cellspacing="1">
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    </tr>
    <tr>
      <td width="87%" align="right"><label>
        <input name="title" type="text" class="rightText" id="title">
      </label></td>
      <td width="13%" align="right">9FH'F 'D.(1</td>
    </tr>
    <tr>
      <td align="right"><textarea name="elm1" cols="50" rows="10" id="elm1" style="direction:rtl" >
          </textarea></td>
      <td align="right">*A'5JD 'D.(1</td>
    </tr>
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    </tr>
    <tr>
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        <input name="addBTN" type="submit" class="btn" id="addBTN" value=" '6'A) .(1 ">
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I created new Fusion web application so I have now to parts in the application navigator (model, viewcontroller)
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sid;
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System.out.println("*");
System.out.println(connection.getCatalog());
} catch (ClassNotFoundException e) {
System.out.println("Could not find the database driver");
} catch (SQLException e) {
System.out.println("Could not connect to the database");
e.printStackTrace();
and wrote JSP page in the view controller part as following :
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
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<%@ page contentType="text/html;charset=windows-1252"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252"/>
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thanks

Duplicate message.
type persistance.DBManager not found
Add a Dependency on the Model project in the View project. In Project Properties select the Dependencies node to add dependencies.
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Thanks
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Ha ha ha,
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Random ran = new Random();
String imgPath = "./img/img_file_name?" +ran.nextInt(99999);and pass this to the "img" element of html.
I think that this trick forces browser to recollect the data from server and not to use cached data.
But my question with experts is that... I have used on jsp page these code:
response.setHeader( "Pragma", "no-cache" );
response.setHeader( "Cache-Control", "no-cache" );
response.setDateHeader( "Expires", 0 );to tell browser not to catch my page, then why browser is caching my page??
Thanks
Shams

Accessing a java class method from the jsp page.

Hi im a beginner with jsp and im trying to find a way to access a method of my java class file in jsp page. After searching through the forums i tried to use the usebean tag. Im using apache to host the jsp file.Below is an excerpt of my code and the error message i got. What am i doing wrong? anyone know?
<%@ page language="java" %>
<jsp:useBean id="movies" class="movie.Movie" />
<jsp:setProperty name="movies" property="*"/>
<%
movies.getStart("file:///C:/Video/Applications2/sun.mpg");
response.setContentType("text/xml");
%>
exception
org.apache.jasper.JasperException: Exception in JSP: /View.jsp:7
4: <jsp:setProperty name="movies" property="*"/>
5: <%
6:
7: movies.getStart("file:///C:/Video/Applications2/sun.mpg");
8: response.setContentType("text/xml");
9: %>
Stacktrace:
     org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:504)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause
javax.servlet.ServletException: javax/media/ControllerListener

Hi thanks for responding. Ok i did look through and it was opening some gui. I still need the program to do server side processes so cant use an applet.but i dont need the gui so i revised it and removed the gui. also im using a servlet to call the class now yet i still have the same error. Any ideas?
Below is the vid2jpg code minus the gui.
import java.io.*;
import java.awt.*;
import javax.media.*;
import javax.media.control.*;
import javax.media.format.*;
import javax.media.protocol.*;
import java.awt.image.*;
import javax.imageio.*;
public class vid2jpg implements ControllerListener
     Processor p;
     Object waitObj = new Object();
     boolean stateOK = true;
     DataSourceHandler handler;
int imgWidth;int imgHeight;
     Image outputImage;
     String sep = System.getProperty("file.separator");
     int[] outvid;
     int startFr = 1;int endFr = 1000;int countFr = 0;
     boolean sunjava=true;
     * Static main method
     public static void main(String[] args)
          if(args.length == 0)
               System.out.println("No media address.");
               new vid2jpg("file:///C:/Video/applications2/sun.mpg");     // or alternative "vfw://0" if webcam
          else
               String path = args[0].trim();
               System.out.println(path);
               new vid2jpg(path);
     * Constructor
     public vid2jpg(String path)
          MediaLocator ml;String args = path;
          if((ml = new MediaLocator(args)) == null)
               System.out.println("Cannot build media locator from: " + args);
          if(!open(ml))
               System.out.println("Failed to open media source");
     * Given a MediaLocator, create a processor and start
     private boolean open(MediaLocator ml)
          System.out.println("Create processor for: " + ml);
          try
               p = Manager.createProcessor(ml);
          catch (Exception e)
               System.out.println("Failed to create a processor from the given media source: " + e);
               return false;
          p.addControllerListener(this);
          // Put the Processor into configured state.
          p.configure();
          if(!waitForState(p.Configured))
               System.out.println("Failed to configure the processor.");
               return false;
          // Get the raw output from the Processor.
          p.setContentDescriptor(new ContentDescriptor(ContentDescriptor.RAW));
          TrackControl tc[] = p.getTrackControls();
          if(tc == null)
               System.out.println("Failed to obtain track controls from the processor.");
               return false;
          TrackControl videoTrack = null;
          for(int i = 0; i < tc.length; i++)
               if(tc.getFormat() instanceof VideoFormat)
                    tc[i].setFormat(new RGBFormat(null, -1, Format.byteArray, -1.0F, 24, 3, 2, 1));
                    videoTrack = tc[i];
               else
               tc[i].setEnabled(false);
          if(videoTrack == null)
               System.out.println("The input media does not contain a video track.");
               return false;
          System.out.println("Video format: " + videoTrack.getFormat());
          p.realize();
          if(!waitForState(p.Realized))
               System.out.println("Failed to realize the processor.");
               return false;
          // Get the output DataSource from the processor and set it to the DataSourceHandler.
          DataSource ods = p.getDataOutput();
          handler = new DataSourceHandler();
          try
               handler.setSource(ods);     // also determines image size
          catch(IncompatibleSourceException e)
               System.out.println("Cannot handle the output DataSource from the processor: " + ods);
               return false;
     //     setLayout(new FlowLayout(FlowLayout.LEFT));
//          currPanel = new imgPanel(new Dimension(imgWidth,imgHeight));
     //     add(currPanel);
     //     pack();
          //setLocation(100,100);
     //     setVisible(true);
          handler.start();
          // Prefetch the processor.
          p.prefetch();
          if(!waitForState(p.Prefetched))
               System.out.println("Failed to prefetch the processor.");
               return false;
          // Start the processor
          //p.setStopTime(new Time(20.00));
          p.start();
          return true;
     * Sets image size
     private void imageProfile(VideoFormat vidFormat)
          System.out.println("Push Format "+vidFormat);
          Dimension d = (vidFormat).getSize();
          System.out.println("Video frame size: "+ d.width+"x"+d.height);
          imgWidth=d.width;
          imgHeight=d.height;
     * Called on each new frame buffer
     int nextframetime = 0;
private void useFrameData(Buffer inBuffer)
try
if(inBuffer.getData()!=null) // vfw://0 can deliver nulls
if(sunjava) // and with import javax.imageio.*;
int frametimesecs = (int)(inBuffer.getTimeStamp()/1000000000);
if(frametimesecs%10 == 0 && frametimesecs==nextframetime)
nextframetime+=10;
BufferedImage bi = new BufferedImage(outputImage.getWidth(null), outputImage.getHeight(null), BufferedImage.TYPE_INT_RGB);
Graphics g = bi.getGraphics();
ImageIO.write(bi, "png", new File("images"+sep+"image_"+(inBuffer.getTimeStamp()/1000000000)+".png"));
catch(Exception e){}
     * Tidy on finish
     public void tidyClose()
          handler.close();
          p.close();
     * Block until the processor has transitioned to the given state
     private boolean waitForState(int state)
          synchronized(waitObj)
               try
                    while(p.getState() < state && stateOK)
                    waitObj.wait();
               catch (Exception e)
          return stateOK;
     * Controller Listener.
     public void controllerUpdate(ControllerEvent evt)
          if(evt instanceof ConfigureCompleteEvent ||     evt instanceof RealizeCompleteEvent || evt instanceof PrefetchCompleteEvent)
               synchronized(waitObj)
                    stateOK = true;
                    waitObj.notifyAll();
          else
          if(evt instanceof ResourceUnavailableEvent)
               synchronized(waitObj)
                    stateOK = false;
                    waitObj.notifyAll();
          else
          if(evt instanceof EndOfMediaEvent || evt instanceof StopAtTimeEvent)
               tidyClose();
     * Inner classes
     * A DataSourceHandler class to read from a DataSource and displays
     * information of each frame of data received.
     class DataSourceHandler implements BufferTransferHandler
          DataSource source;
          PullBufferStream pullStrms[] = null;
          PushBufferStream pushStrms[] = null;
          Buffer readBuffer;
          * Sets the media source this MediaHandler should use to obtain content.
          private void setSource(DataSource source) throws IncompatibleSourceException
               // Different types of DataSources need to handled differently.
               if(source instanceof PushBufferDataSource)
                    pushStrms = ((PushBufferDataSource) source).getStreams();
                    // Set the transfer handler to receive pushed data from the push DataSource.
                    pushStrms[0].setTransferHandler(this);
                    // Set image size
                    imageProfile((VideoFormat)pushStrms[0].getFormat());
               else
               if(source instanceof PullBufferDataSource)
                    System.out.println("PullBufferDataSource!");
                    // This handler only handles push buffer datasource.
                    throw new IncompatibleSourceException();
               this.source = source;
               readBuffer = new Buffer();
          * This will get called when there's data pushed from the PushBufferDataSource.
          public void transferData(PushBufferStream stream)
               try
                    stream.read(readBuffer);
               catch(Exception e)
                    System.out.println(e);
                    return;
               // Just in case contents of data object changed by some other thread
               Buffer inBuffer = (Buffer)(readBuffer.clone());
               // Check for end of stream
               if(readBuffer.isEOM())
                    System.out.println("End of stream");
                    return;
               // Do useful stuff or wait
               useFrameData(inBuffer);
          public void start()
               try{source.start();}catch(Exception e){System.out.println(e);}
          public void stop()
               try{source.stop();}catch(Exception e){System.out.println(e);}
          public void close(){stop();}
          public Object[] getControls()
               return new Object[0];
          public Object getControl(String name)
               return null;
below is the servlet code.
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class ShowMovie extends HttpServlet {
String rootURL="http://127.0.0.1:8080/Video/";
public void processRequest(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
     //String movie=request.getParameter("movie");
     String movie ="son";
     getStart(movie);
          response.sendRedirect(rootURL+"View.jsp");
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
processRequest(request, response);
     public void getStart(String url){
          new vid2jpg(url);
this is the error from the server. Im using tomkat 5
exception
javax.servlet.ServletException: Servlet execution threw an exception
root cause
java.lang.NoClassDefFoundError: javax/media/ControllerListener
     java.lang.ClassLoader.defineClass1(Native Method)
     java.lang.ClassLoader.defineClass(Unknown Source)
     java.security.SecureClassLoader.defineClass(Unknown Source)
     org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1812)
     org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:866)
     org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1319)
     org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1198)
     java.lang.ClassLoader.loadClassInternal(Unknown Source)
     ShowMovie.getStart(ShowMovie.java:31)
     ShowMovie.processRequest(ShowMovie.java:14)
     ShowMovie.doGet(ShowMovie.java:22)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:689)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.17 logs.

System.out from Java class not output to JSP

I am using JSP to make a Java API web accessible. I include (package) java classes that write error messages to standard out when they catch an error. Works fine on the command line. Problem occurs when using in JSP. I include them with a page directive (importing the package) rather than use them as beans, since they do so much more than beans do, and since I use many of the classes in a single page.
i.e.
<%@ page import="OPS.*" %>
When errors occur, messages to "standard out" (system.out) don't appear in the html output of the JSP. I don't know where they are going (they aren't in the web server's error log), but they aren't going where I expected them to (browser window).
I figured that standard out was the browser (httpServletResponse). Where am I going wrong here?
Basically, I have a class that connects to a database (call it db) and does queries/updates. I have a class (call it employee) that uses the db class. I have a jsp page that instantiates the employee class and executes method calls. The code in the db class that outputs SQL error messages (db class instantiated by employee class) never gets put in the browser window. Nor in the server log, nor the console.
How can I get system.out calls in classes db and employee to get output to the browser? The JSP outputs all other code and is not freezing nor not flushing the buffer.
Thanks!

I also use an Iplanet over which I have little control. But I can log on via telnet. If I log on (I use Reflection) and run my pages, the errors show in the Reflection window. If you have telnet access to the server, you might want to give this a try.
Another alternative would be to add a few lines to your classes that allow you to pass a reference to the jsp StringWriter from your jsp and use that to output the errors to the browser.

Setting Java class parameters for a JSP page

Hi,
I have a Java class that has a reference to a Session Id. I want to call a JSP from the class and set the session id to a String variable in the JSP. I am using a URL class to call the JSP. After the actual URL is passed to the URL constructor, I am appending the "?m_sessionId=e_session Id" at the end of the URL. In my JSP, I have the m_sessionId String parameter that i want to set e_sessionId to. What should i do in my JSP to set this? Any answers will be very helpful and I'd like to offer many thanks in advance
public void loadSessionStuff(String sessionID){
   String e_sessionId = URLEncode.encode(sessionID);
   URL url = new URL("http://localhost:9000/MyJSP.jsp?m_sessionId="+e_sessionId);
   .....MyJSP.jsp looks something like this
   <%!
      String m_sessionId;
      public void setSessionId(){
       m_sessionid = request.getParameter("e_sessionId");
       public String getSessionId(){
           return m_sessionId;
        other stuff....
    %>Is this the correct way to do things. It's not working.
Regards
R

Hi Rahul,
Yeah, i got that resolved. Do you know how i can get the thing in reverse gear. What i mean is i can successfully call and get the JSP to do things for me from my Java bean. What about sending stuff back to my bean?
I want to send the List back to my calling class so i can work with it.
Thanks
Regards
Jeeves
My Java code is as follows
Results i_krf = null;
if(null != getSessionId()){
                String e_sessionId = URLEncoder.encode(this.m_sessionId);
                String eQuestion = URLEncoder.encode(sQuestion);
                Object obj;
                String URL = "http://"+m_rea.getHostname()+":"+m_rea.getPort()+"/"+"SecondaryInitiator.jsp"+"?m_sessionId="+e_sessionId+"&question="+eQuestion;
                URL url = new URL(URL);
                         URLConnection urlConn = url.openConnection();
                ois = new ObjectInputStream(new BufferedInputStream(urlConn.getInputStream()));
                while((obj = ois.readObject()) != null){
                     System.out.println("From OIS::"+obj.getClass());
                                i_krf = (Reults) obj;
<%@ page import = "java.io.*,java.sql.*,java.util.*"%>
<%
String m_sessionId;
String eQuestion;
System.out.println("In the JSP Page. Scriptlet part");
m_sessionId = request.getParameter("m_sessionId");
eQuestion = request.getParameter("question");
System.out.println("Session Id in JSP::"+m_sessionId+"::"+eQuestion);
Results i_krf = loadSession(m_sessionId);
if(null != i_krf){
   System.out.println("NOT NULL::");
   List list = i_krf.getPathList(eQuestion);
   for(Iterator it = list.iterator();it.hasNext();){
    PathKeys pk = (PathKeys) it.next();
    System.out.println("PATH::"+pk.getPathKey());
%>
<%!
     Shopper m_sSession = null;
     Results i_krf;
     public Results loadSession(String m_sessionId){
      if(null != m_sessionId){
        m_sSession = Shopper.findShopSession(m_sessionId);
        System.out.println("Session ID from JSP"+m_sessionId);
        if(null != m_sSession ){
          i_krf = new ResultsImpl(m_sSession );
      return (null==i_krf?null:i_krf);
%>

Bean not found by JSP page

Hi! All
I am using a bean in my jsp page. When I open the jsp page, I get an error that "Class SQLBean.DbBean not found". Please help. I have my bean class compiled and saved under C:\tomcat\webapps\examples\WEB-INF\classes
Here is the bean class:
package SQLBean;
import java.sql.*;
import java.io.*;
public class DbBean {
String dbURL = "jdbc:db2:sample";
String dbDriver = "jdbc:odbc:akhil.mdb";
private Connection dbCon;
public Class DbBean(){
super();
public boolean connect(String user, String password) throws ClassNotFoundException,SQLException{
System.out.print("hey");
Class.forName(dbDriver);
dbCon = DriverManager.getConnection(dbURL, user, password);
return true;
public void close() throws SQLException{
dbCon.close();
public ResultSet execSQL(String sql) throws SQLException{
Statement s = dbCon.createStatement();
ResultSet r = s.executeQuery(sql);
return (r == null) ? null : r;
public int updateSQL(String sql) throws SQLException{
Statement s = dbCon.createStatement();
int r = s.executeUpdate(sql);
return (r == 0) ? 0 : r;
Here is the jsp page:
<HTML>
<HEAD><TITLE>DataBase Search</TITLE></HEAD>
<BODY>
<%@ page language="Java" import="java.sql.*" %>
<jsp:useBean id="db" scope="request" class="SQLBean.DbBean" />
<jsp:setProperty name="db" property="*" />
<%!
ResultSet rs = null ;
ResultSetMetaData rsmd = null ;
int numColumns ;
int i;
%>
<center>
<h2> Results from here</h2>
<hr>
<br><br>
<%
out.print("Here");
db.connect("atayal", "arduous");
try {
out.print("HI");
rs = db.execSQL("select * from contacts");
}catch(SQLException e) {
throw new ServletException("Your query is not working", e);
%>
<%
while(rs.next()) {
%>
<%= rs.getString("email") %>
<BR>
<%
%>
<BR>
<%
db.close();
%>
Done
</body>
</HTML>
Thanks in advance

Thank you for your valuable feedback duffymo. Could
you explain a little what you mean by "Putting .class
files in the Tomcat examples directory is a really bad
idea in the long run". Also, could you direct me to
some source where I can find more information on
creating WAR files keeping in mind that I am a
beginner.
Thanks.But putting your web apps into WAR files, you can have quite a few different web apps running on the tomcat server as compared to if u place your files into the default webapp folder, u can only have 1 web app running.
For creating WAR file, the easiest way is to use an IDE like JBuilder.

Tag library 'not found' in jsp page. why?

I'm having a big problem with jsp/tag libraries using oc4j. One
particular
tag library is not being 'found' for some mysterious reason. The
particulars follow:
kwTags.jar is the jar file containing the tag classes. It definitely
exists in WEB-INF/lib directory.
tld def. in web.xml:
<taglib>
<taglib-uri>/kw</taglib-uri>
<taglib-location>/WEB-INF/tlds/kwTagLib.tld</taglib-location>
</taglib>
The tld file definitely exists in the /WEB-INF/tlds directory.
The definition of the tag lib at the top of the kwTagLib.tld follows:
<taglib>
<tlib-version>1.0</tlib-version>
<jsp-version>1.2</jsp-version>
<short-name>kw</short-name>
<uri>/kw</uri>
<display-name>kwTagLib</display-name>
<small-icon></small-icon>
<large-icon></large-icon>
<description></description>
The tag reference in jsp page is:
<%@ taglib uri="/WEB-INF/tlds/kwTagLib.tld" prefix="kw" %>
The development environment is Eclipse Workbench 5.1.0 and Eclipse
v.3.2.1
JDK is: j2sdk1.4.2_04
All other tag libs (Struts v.1.3.5) are found and work correctly. This
is the only tag library that
a problem.
Error Message follows:
java.lang.NullPointerException at
oracle.jsp.parse.JspDirectiveTaglib.validateAttributes(JspDirectiveTaglib.java:183)
at
oracle.jsp.parse.JspParseTagDirective.validateTagAttributes(JspParseTagDirective.java:180)
at oracle.jsp.parse.JspParseTag.parse(JspParseTag.java:921)
at
oracle.jsp.parse.JspParseTagDirective.parse(JspParseTagDirective.java:326)
at oracle.jsp.parse.JspParseTag.parseNextTag(JspParseTag.java:705)
at oracle.jsp.parse.JspParseTagFile.parse(JspParseTagFile.java:184)
at oracle.jsp.parse.OracleJsp2Java.transform(OracleJsp2Java.java:154)
at
oracle.jsp.runtimev2.JspPageCompiler.attemptCompilePage(JspPageCompiler.java:428)
at
oracle.jsp.runtimev2.JspPageCompiler.compilePage(JspPageCompiler.java:284)
at
oracle.jsp.runtimev2.JspPageInfo.compileAndLoad(JspPageInfo.java:483)
at
oracle.jsp.runtimev2.JspPageTable.compileAndServe(JspPageTable.java:542)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:305)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:810)
at
com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:322)
at
com.evermind.server.http.ServletRequestDispatcher.forward(ServletRequestDispatcher.java:251)
at
org.apache.struts.chain.commands.servlet.PerformForward.handleAsForward(PerformForward.java:99)
at
org.apache.struts.chain.commands.servlet.PerformForward.perform(PerformForward.java:82)
at
org.apache.struts.chain.commands.AbstractPerformForward.execute(AbstractPerformForward.java:51)
at
org.apache.struts.chain.commands.ActionCommandBase.execute(ActionCommandBase.java:48)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
at
org.apache.commons.chain.generic.LookupCommand.execute(LookupCommand.java:304)
at org.apache.commons.chain.impl.ChainBase.execute(ChainBase.java:190)
at
org.apache.struts.chain.ComposableRequestProcessor.process(ComposableRequestProcessor.java:280)
at
org.apache.struts.action.ActionServlet.process(ActionServlet.java:1858)
at
org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:459)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at
com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
at
org.tuckey.web.filters.urlrewrite.UrlRewriteFilter.doFilter(UrlRewriteFilter.java:738)
at
com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:649)
at
com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:322)
at
com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
at
com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
at
com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
at
com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
at java.lang.Thread.run(Thread.java:534)

java.lang.NullPointerException at
oracle.jsp.parse.JspDirectiveTaglib.validateAttributes(JspDirectiveTaglib.java:183)
at oracle.jsp.parse.JspParseTagDirective.validateTagAttributes(JspParseTagDirective.java:180)That NullPointerException does not sound right. What is your oc4j version?
By the way, your declaration of taglib in web.xml can be deleted if you are not using that taglib-uri "/kw" in your jsp.

Changes not reflecting in JSP page

Recently we upgraded our server from orion to oc4j.When on the client side any changes were made in the java bean
its not reflecting immediately in the corresoponding jsp page or the application. We tried to look at all angels like class file in web-inf its changing there.The changes are taking place only after restarting the server. Pl give us valuable suugestion
Regards
Kumar

It is correct that the change in the JavaBean is not taking effect until you restart the server (as far as I know anyway).
If you are using version 9.0.4 or using a version that uses JDP 1.4.x try using the HotSwap tool which can dynamically reload classes on the fly. Excellent tool for development but not sure if it is recommended for a Production environment.
Also, if you are using JDK 1.4.x, try using JDeveloper 10g and it's excellent debugging tools for development, it will swap your classes into the running JVM if the debugger is switched on.

How to call a class method from a jsp page?

Hi all,
i would like to create a basic jsp page in jdev 1013 that contains a button and a text field. When clicking the button, i would like to call a method that returns a string into the text field.
The class could be something like this:
public class Class1 {
public String getResult() {
return "Hello World";
How do i go about this?
Thanks

Here is a sample:
HTML><HEAD><TITLE>Test JDBC for Oracle Support</TITLE></HEAD><BODY>
<%@ page import="java.sql.*, oracle.jdbc.*, oracle.jdbc.pool.OracleDataSource" %>
<% if (request.getParameter("user")==null) { %>
<FORM method="post" action="testjdbc.jsp">
<H1>Enter connection Parameters</H1>
<H5>Please enter host name:</H5><INPUT TYPE="text" name="hostname" value="localhost" />
<H5>Please enter port number:</H5><INPUT TYPE="text" name="port" value="1521" />
<H5>Service nanme:</H5><INPUT TYPE="text" name="service" value="XE" />
<H5>Please enter username: </H5><INPUT TYPE="text" name="user" />
<H5>Please enter password</H5><INPUT TYPE="password" name="password" />
<INPUT TYPE="submit" />
</FORM>
<% } else { %>
<%
String hostName = request.getParameter("hostname");
String portNumber = request.getParameter("port");
String service = request.getParameter("service");
String user = request.getParameter("user");
String password = request.getParameter("password");
String url = "jdbc:oracle:thin:" + user + "/" + password + "@//" + hostName + ":" + portNumber + "/" + service;
try {
OracleDataSource ods = new OracleDataSource();
ods.setURL(url);
Connection conn = ods.getConnection();
// Create Oracle DatabaseMetaData object
DatabaseMetaData meta = conn.getMetaData();
// gets driver information
out.println("<TABLE>");
out.println("<TR><TD>");
out.println("<B>JDBC Driver version</B>");
out.println("</TD>");
out.println("<TD>");
out.println(meta.getDriverVersion());
out.println("</TD>");
out.println("</TR>");
out.println("<TR><TD>");
out.println("<B>JDBC Driver Name</B>");
out.println("</TD>");
out.println("<TD>");
out.println(meta.getDriverName());
out.println("</TD>");
out.println("</TR>");
out.println("<TR><TD>");
out.println("<B>JDBC URL</B>");
out.println("</TD>");
out.println("<TD>");
out.println(meta.getURL());
out.println("</TD>");
out.println("<TABLE>");
conn.close();
} catch (Exception e) {e.printStackTrace(); }
%>
<%-- end else if --%>
<% } %>
</BODY>
</HTML>

IUser class not recognized in JSP page

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