Concurrency problem in Servlets, JSP

Hi all
I found that whenever 2 or more access my servlet or jsp, the server is giving an error.
How do I solve this. How do I synchronize.
Please help.
Rajani

You do know that once instantiated, a servlet object is used to service requests from multiple(and concurrent) clients. Right ?
Well then, the first thing to check is whether you have any instance data members in your servlet classes or your JSPs.

Similar Messages

Having problems compiling *.java with import javax.servlet.jsp......

I've been trying to do the tutorials in a book titled Apache Jakarta-Tomcat as part of my introduction to JSP. I'm new to Java but do know the basics. I have on my machine Java 1.3, Java 1.4, Java FrameWorks 2.1 and Jython 2.1 on Win2000 Pro. So enough about my configuration. I have never worked with packages also.
I downloaded the files from the books site due to the fact I make a lot of typos when hand coding Java (I've become a pretty good debugger of my own code). But everytime I go to compile the *.java I get error messages. So below you will find HelloTag.java and beneath that the error messages that are thrown when I try and compile it. I tested other bits of *.java and have had no problem compiling them. Is there a JSP module I'm missing?
Am I doing something wrong or am I missing something from my configuration.
Marijan Madunic
package chapter2;
import javax.servlet.jsp.JspException;
import javax.servlet.jsp.JspTagException;
import javax.servlet.jsp.tagext.TagSupport;
public class HelloTag extends TagSupport
public void HelloTag() {
// Method called when the closing hello tag is encountered
public int doEndTag() throws JspException {
try {
// We use the pageContext to get a Writer
// We then print the text string Hello
pageContext.getOut().print("Hello");
catch (Exception e) {
throw new JspTagException(e.getMessage());
// We want to return SKIP_BODY because this Tag does not support
// a Tag Body
return SKIP_BODY;
public void release() {
// Call the parent's release to release any resources
// used by the parent tag.
// This is just good practice for when you start creating
// hierarchies of tags.
super.release();
D:\Java\JDK 1.3\bin>javac HelloTag.java
HelloTag.java:3: cannot resolve symbol
symbol : class JspException
location: package jsp
import javax.servlet.jsp.JspException;
^
HelloTag.java:4: cannot resolve symbol
symbol : class JspTagException
location: package jsp
import javax.servlet.jsp.JspTagException;
^
HelloTag.java:5: cannot resolve symbol
symbol : class TagSupport
location: package tagext
import javax.servlet.jsp.tagext.TagSupport;
^
HelloTag.java:7: cannot resolve symbol
symbol : class TagSupport
location: class chapter2.HelloTag
public class HelloTag extends TagSupport
^
HelloTag.java:14: cannot resolve symbol
symbol : class JspException
location: class chapter2.HelloTag
public int doEndTag() throws JspException {
^
HelloTag.java:20: cannot resolve symbol
symbol : variable pageContext
location: class chapter2.HelloTag
pageContext.getOut().print("Hello");
^
HelloTag.java:24: cannot resolve symbol
symbol : class JspTagException
location: class chapter2.HelloTag
throw new JspTagException(e.getMessage());
^
HelloTag.java:28: cannot resolve symbol
symbol : variable SKIP_BODY
location: class chapter2.HelloTag
return SKIP_BODY;
^
HelloTag.java:37: cannot resolve symbol
symbol : variable super
location: class chapter2.HelloTag
super.release();
^
9 errors

Well, it looks like you've not got the servlet development kit JAR on your classpath. I think it'll probably be called servlet.jar on your system. Add that to the classpath if it's not already there.
Incidentally, you've bumped into one of the areas Java's slightly lenient - declaring a method that looks like a constructor:
public HelloTag() { }
public void HelloTag() { }The first is a constructor, the second is a normal method. I'm assuming you intended to have the former instead of the latter.
Anyway, hope this helps.

Servlet / JSP caching problem!!

I have a servlet that is running a process which creates an image. The servlet also is creating two jsp pages, one with a frameset for the header and body, and the other being the body. The body is supposed to dynamically use the new image, but it is cached and shows the old image until I manually hit the refresh button. In the servlet, I delete all the files / images before the process is run. When I had the image inside its own frame, I got it to work, but the client doesn't want it that way. I don't understand why it does not work now?

I saw some topics about this problem in Servlets Forums in this site, try to find there.
Forum Home > Servlet and JSP Technology.
Good Luck,
Jusbe

Problem: package javax.servlet.jsp does not exist

I am a novice JSP programmer. My projects that use any javax.servlet classes are not seeing those at all. I am working with a group of folks using Java SE 1.5. (Note: I'm using Windows so the directory separator is "\")
What Used to work:
1. Nearly all my projects were working using Java version 1.6. These projects were developed as examples from Wrox and Apress books about JSP and Struts.
What has changed:
1. I un-installed the version 1.6 of JDK and JRE, as well as tomcat, netbeans, and all the associated libraries/jars.
2. I installed version 1.5 of JDK and JRE, as well as tomcat, netbeans, and all the associated libraries/jars.
3. I updated my JAVA_HOME, CATALINA_HOME, CLASSPATH, and PATH environmental variables. I made sure that the path to servlet-api.jar (in the tomcat common\lib) is included in the classpath.
What is wrong:
1. References to javax.servlet.* are not satisfied--they are flagged in the source code in NetBeans and I get compiler errors with any project containing those references. For example:
... package javax.servlet.jsp does not exist
import javax.servlet.jsp.*;
What I've found:
1. My CATALINA_HOME=C:\Java\Tomcat 5.5
2. My JAVA_HOME=C:\Java\jdk1.5.0_11
3. My CLASSPATH=.;C:\Program Files\QuickTime\QTSystem\QTJava.zip;%JAVA_HOME%\lib;%JAVA_HOME%\jre\lib;%JAVA_HOME%\lib\jsp-api.jar;%CATALINA_HOME%\common\lib\servlet-api.jar;C:\Java\logging-log4j-1.2.14\dist\lib\log4j-1.2.14.jar
4. My PATH=c:\wint\BIN;%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin;%CATALINA_HOME%\bin;C:\MySQL\MySQL Server 5.0\bin;D:\MiKTeX 2.5\miktex\bin;C:\Perl\bin\;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\QuickTime\QTSystem\;C:\Program Files\Microsoft SQL Server\80\Tools\Binn\;C:\SFU\Perl\bin\;C:\SFU\common\;C:\Program Files\Lahey-Fujitsu Fortran\v7.1\Bin;C:\Program Files\Lahey-Fujitsu Fortran\v7.1\Win32\Bin
What I need:
1. I need to have some reference to the servlet classes satisfied in my configuration. Any help is appreciated.
thanks
jondr

Oh. I got some over-the-shoulder debug help.
My error was in the classpath specification:
The path: %JAVA_HOME%\lib\jsp-api.jar
Should be: %CATALINA_HOME%\lib\jsp-api.jar
That contains the javax.servlet.jsp.*
Thimk.
Message was edited by: jon
jondr

Problem wth weblogic.servlet.jsp.jspstub

hai,
          i have three pages in my application iam calling a login page which verifies the user and gets the data from the database
          and iam showing the results in the secod page and logging from there.
          This process iam doing with a stress tool repeatedly.
          iam observing the created objects in the heapinspector the name of the product is optimiztit.
          iam observing the following contents are increasing on each login process.
          The objects which are increasing are as follows.
          weblogic.servlet.jsp.config,
          weblogic.servlet.jsp.jspstub,
          weblogic.socket.IoRecord,
          weblogic.rmi.internal.dgc.DGCServerHelper,
          java.lang.security.exceptions
          and some other weblogic related objects.
          and once they reach the max heap memory my application is runnig outofmemory exception.
          do i need to follow any configration setting to arrest the above object increments.
          can any body give some help to over come this.it would be a great help for me if i get any healp.
          Any ideas/pointers would be welcome. Thanks for your help.
          Thanks,
          gangadhar


Hi,
          It's peculiar that you're seeing JspStub and jsp.config instances
          increasing. Can you convert your application to a stand alone app that
          doesn't do any database access and send me the application with instructions
          on how to run it. If so, I can look into it quickly - otherwise, I can only
          guess and that is a waste of time for both of us.
          Alex
          "gangadhar" <[email protected]> wrote in message
          news:[email protected]...
          > hai,
          >
          > i have three pages in my application iam calling a login page which
          verifies the user and gets the data from the database
          > and iam showing the results in the secod page and logging from there.
          >
          > This process iam doing with a stress tool repeatedly.
          >
          > iam observing the created objects in the heapinspector the name of the
          product is optimiztit.
          >
          > iam observing the following contents are increasing on each login process.
          >
          > The objects which are increasing are as follows.
          >
          > weblogic.servlet.jsp.config,
          > weblogic.servlet.jsp.jspstub,
          > weblogic.socket.IoRecord,
          > weblogic.rmi.internal.dgc.DGCServerHelper,
          > java.lang.security.exceptions
          > and some other weblogic related objects.
          >
          > and once they reach the max heap memory my application is runnig
          outofmemory exception.
          >
          > do i need to follow any configration setting to arrest the above object
          increments.
          >
          > can any body give some help to over come this.it would be a great help for
          me if i get any healp.
          >
          > Any ideas/pointers would be welcome. Thanks for your help.
          >
          > Thanks,
          > gangadhar

Problem with the jsp printing

Can anyone help me please with jsp i have the following problem can you help me.
This is my console printing:
null16-08-2006 REPLY TIME: 14:34:32
REPLY : Hinknff
null16-08-2006 REPLY TIME: 14:36:34
REPLY : Hu jjdfgf
null16-08-2006 REPLY TIME: 14:39:57
REPLY : ffffffffffffffffff
but this is my webpriniting:
null16-08-2006 REPLY TIME: 14:34:32 REPLY : Hinknff null16-08-2006 REPLY TIME: 14:36:34 REPLY : Hu jjdfgf null16-08-2006 REPLY TIME: 14:39:57 REPLY : ffffffffffffffffff null16-08-2006 REPLY TIME: 14:44:58 REPLY : nnnnngf REPLY DATE:16-08-2006 REPLY TIME: 15:45:18 REPLY : Replughjfgjgf REPLY DATE:16-08-2006 REPLY TIME: 15:47:39 REPLY : Rn,kgdfg REPLY DATE:16-08-2006 REPLY TIME: 15:49:48 REPLY : Rngm,ng,df
that is i am not getting it in web as i get in console can you please help me how can i do that.
below is the partial code for printing in which i have used vector,strings only.
String qu = nn2.elementAt(j)+"";
String re = nn3.elementAt(j)+"";
String b= qu;
String b1 = re
System.out.println(b1);
String redt1 = nn4.elementAt(j)+"";
if(redt1.equals("No Reply")){
redt.append(redt1);
retime.append(redt1);
else
String redtt=redt1.substring(8,10);
          String remonth=redt1.substring(5,7);
          String reyear=redt1.substring(0,4);
          String rehh=redt1.substring(11,13);
          String remm=redt1.substring(14,16);
          String ress=redt1.substring(17,19);
redt.append(redtt+"-"+remonth+"-"+reyear);
retime.append(rehh+":"+remm+":"+ress);
} %>
<br>
<table>
<tr">
<td>
<b>Query Posted Date</b>
<%out.println(qudt);%>
<b>Query Posted Time :</b>
<%out.println(qutime);%>
<br>
<b style="font-family:verdana;font-size:80%;color:green">Query :</b>
<%out.println(b);
%>
</td>
</tr>
</table>
<br>
<table>
<tr bgcolor="rgb(174,174,250)">
<td>
<b>Last Reply Posted Date</b>
<%out.println(redt);%>
<b>Last Reply Posted Time :</b>
<%out.println(retime);%>
<br>
<b style="font-family:comicscans;font-size:80%;color:Red">Reply :</b>
<%
out.println(b1);
int qudtsize = qudt.length();
qudt.delete(0,qudtsize);
int qutimesize = qutime.length();
qutime.delete(0,qutimesize);
int redtsize = redt.length();
redt.delete(0,redtsize);
int retimesize = retime.length();
retime.delete(0,retimesize);
%>
<br>
</td>
</tr>
</table>
<br>
<% }
connection.close();
}catch(SQLException e)
e.printStackTrace();
%>
<input type="submit" value="Back" onClick="calljsp1()"/>
</form>
</body>
</html>

Hi.
Even i am getting the similar exception. The JSP report works fine on Oracle 9iDS. But throws following exception in Oracle 9iAS. I have already tried recompiling, etc but to no avail.
Any help in this regard is highly appreciated.
javax.servlet.jsp.JspException: rwlib-1: REP-1247: Report contains uncompiled PL/SQL.
javax.servlet.jsp.JspException: rwlib-1: REP-1247: Report contains uncompiled PL/SQL.
at oracle.reports.jsp.ObjectsTag.doEndTag(ObjectsTag.java:180)
at examples.tools._fapsreports._StudentReimbursementScheduleExcelReport._jspService(_StudentReimbursementScheduleExcelReport.java:80)
at com.orionserver.http.OrionHttpJspPage.service(OrionHttpJspPage.java:56)
at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:302)
at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:407)
at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:330)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:336)
at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:59)
at oracle.security.jazn.oc4j.JAZNFilter.doFilter(JAZNFilter.java:283)
at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:535)
at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:281)
at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:766)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:152)
at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:72)
at EDU.oswego.cs.dl.util.concurrent.PooledExecutor$Worker.run(PooledExecutor.java:802)
at java.lang.Thread.run(Thread.java:484)

Problem in compiling jsp file

Hi,
i am using tomcat 4.12 and jdk 1.4.
My login page contains 3 frames. after succesful login into ur application, 7 frames are getting called.
i have called a jsp page for each frame.
sometimes while accessing my application, i am getting jasper exception like cannot resolve symbol....
for example
D:\Program Files\Apache Group\Tomcat 4.1\work\Standalone\localhost\sample\web\helpdesklogin_jsp.java:404: cannot resolve symbol
symbol : method --ite (java.lang.String)
location: class javax.servlet.jsp.JspWriter
out.write("<tr bgcolor=\"ffffff\">\r\n ");
i do not understand the what is the problem here....
likewise i am getting jasper exception. but it is not frequently occured in the frame.
is there any relation with autoflush page directive attribute...?
if it then should i increase default buffer size ?
Reply please
Thanks

Your helpdesklogin.jsp file has a compilation error. It's hard to tell, but it looks like you mis-typed out.write() somewhere.
- Saish

Javax.servlet.jsp.JspException: java.lang.NullPointerException

hi,
I try to view my presentation in jsp page.I use oracle jdeveloper 9.2.0.4 and bibeans 9.2.0.4 and once 1 month ago I did this taks (I view a presentation from bibdemo in jsp file)
now I try to view my own presentation in jsp but I recieve error message in my own schema and bibdemo schema!!
when I use windows xp I recieve following error :
500 Internal Server Error
javax.servlet.jsp.JspException: BIB-10310 An unknown exception occurred.
BIB-10101 Handler failed to handle UserObject.
BIB-14067 Persistable object threw exception during lookup on method setXMLAsString; component class oracle.dss.dataSource.client.QueryClient; exception oracle.dss.util.persistence.BIPersistenceException.
BIB-9509 Oracle OLAP did not create cursor.
oracle.olapi.data.source.UnmatchedInputsException
BIB-9509 Oracle OLAP did not create cursor.
oracle.olapi.data.source.UnmatchedInputsException
oracle.olapi.data.source.UnmatchedInputsException
     at oracle.dss.addins.jspTags.PresentationTag.doStartTag(PresentationTag.java:194)
     at test.jspService(test.jsp:6)
     [test.jsp]
     at oracle.jsp.runtime.HttpJsp.service(HttpJsp.java:139)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:349)
     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[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:778)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
     at java.lang.Thread.run(Thread.java:534)
and when I use windows NT I recieve following error :
500 Internal Server Error
javax.servlet.jsp.JspException: java.lang.NullPointerException
     at oracle.dss.addins.jspTags.RenderTag.doEndTag(RenderTag.java:212)
     at kafa_report__7._jspService(kafa_report_7.jsp:18)
     [kafa_report_7.jsp]
     at oracle.jsp.runtime.HttpJsp.service(HttpJsp.java:139)
     at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:349)
     at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:509)
     at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:413)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:778)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
     at com.evermind[Oracle Application Server Containers for J2EE 10g (9.0.4.0.0)].util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:186)
     at java.lang.Thread.run(Thread.java:534)
I
what the problem is ????????
thanks in advance,

hi,
here the result :
<?xml version="1.0" encoding="UTF-8" ?>
- <BICheckConfig version="1.0.2.0">
<Check key="JDEV_ORACLE_HOME" value="d:\jdev904" />
<Check key="JAVA_HOME" value="C:\j2sdk1.4.2_01" />
<Check key="JDeveloper version" value="9.0.4.0.1419" />
<Check key="BI Beans release description" value="BI Beans 9.0.4 Production Release" />
<Check key="BI Beans component number" value="9.0.4.23.0" />
<Check key="BI Beans internal version" value="2.7.5.32" />
<Check key="host" value="200.20.20.11" />
<Check key="port" value="1521" />
<Check key="sid" value="ora10g" />
<Check key="user" value="dw_targetschema" />
<Check key="Connecting to the database" value="Successful" />
<Check key="JDBC driver version" value="9.2.0.4.0" />
<Check key="JDBC JAR file location" value="D:\jdev904\jdev\lib\patches" />
<Check key="Database version" value="10.1.0.2.0" />
<Check key="OLAP Catalog version" value="10.1.0.2.0" />
<Check key="OLAP AW Engine version" value="10.1.0.2.0" />
<Check key="OLAP API Server version" value="10.1.0.2.0" />
<Check key="BI Beans Catalog version" value="N/A; not installed in dw_targetschema" />
<Check key="OLAP API JAR file version" value="9.2" />
<Check key="OLAP API JAR file location" value="d:\jdev904\jdev\lib\ext" />
<Check key="OLAP API Metadata Load" value="Successful" />
<Check key="Number of metadata folders" value="2" />
<Check key="Number of metadata measures" value="1" />
<Check key="Number of metadata dimensions" value="3" />
- <Check key="OLAP API Metadata">
- <![CDATA[
==============================================================================
Type      Name (S=Schema, C=Cube, M=Measure, D=Dimension)         Status
========= ======================================================= ============
Folder... ROOT
Folder...   KAFA_COLLECTION
Folder...   KAFA_COLLECTION2
Measure..      SALARY                                             Unsuccessful
               S=DW_TARGETSCHEMA, C=EMPLOYEMENT_CUBE, M=SALARY
               Connection lost. Reconnect                         Successful
Dimension      DEP_DIM                                            Successful
               S=DW_TARGETSCHEMA, D=DEP_DIM
Dimension      EMP_DIM                                            Successful
               S=DW_TARGETSCHEMA, D=EMP_DIM
Dimension      JOB_DIM                                            Successful
               S=DW_TARGETSCHEMA, D=JOB_DIM
]]>
</Check>
- <Check key="StackTrace">
- <![CDATA[
============================================================================
Queries on the following measures or dimensions failed
(S=Schema, C=Cube, M=Measure, D=Dimension)
"SALARY" measure query with S=DW_TARGETSCHEMA, C=EMPLOYEMENT_CUBE, M=SALARY
============================================================================
Exception stacktrace for "SALARY" measure query with S=DW_TARGETSCHEMA, C=EMPLOYEMENT_CUBE, M=SALARY
============================================================================
1) BIB-9009 Oracle OLAP could not create cursor.
oracle.express.idl.util.OlapiException: No more data to read from socket
2) BIB-9009 Oracle OLAP could not create cursor.
oracle.express.idl.util.OlapiException: No more data to read from socket
1) BIB-9009 Oracle OLAP could not create cursor.
oracle.express.idl.util.OlapiException: No more data to read from socket
============================================================================
oracle.dss.dataSource.common.QueryRuntimeException: BIB-9009 Oracle OLAP could not create cursor.
oracle.express.idl.util.OlapiException: No more data to read from socket
java.lang.CloneNotSupportedException: BIB-9009 Oracle OLAP could not create cursor.
oracle.express.idl.util.OlapiException: No more data to read from socket
     at oracle.dss.dataSource.common.Query.addQueryListener(Query.java:480)
     at BICheckConfig.runDefaultMeasureQuery(BICheckConfig.java:480)
     at BICheckConfig.printFolder(BICheckConfig.java:405)
     at BICheckConfig.printFolder(BICheckConfig.java:464)
     at BICheckConfig.checkConnection(BICheckConfig.java:350)
     at BICheckConfig.main(BICheckConfig.java:1348)
2) BIB-9009 Oracle OLAP could not create cursor.
oracle.express.idl.util.OlapiException: No more data to read from socket
============================================================================
java.lang.CloneNotSupportedException: BIB-9009 Oracle OLAP could not create cursor.
oracle.express.idl.util.OlapiException: No more data to read from socket
     at oracle.dss.dataSource.common.CubeCursor.clone(CubeCursor.java:387)
     at oracle.dss.dataSource.common.Query.addNewCubeCursorCopy(Query.java:2366)
     at oracle.dss.dataSource.common.Query.addQueryListener(Query.java:477)
     at BICheckConfig.runDefaultMeasureQuery(BICheckConfig.java:480)
     at BICheckConfig.printFolder(BICheckConfig.java:405)
     at BICheckConfig.printFolder(BICheckConfig.java:464)
     at BICheckConfig.checkConnection(BICheckConfig.java:350)
     at BICheckConfig.main(BICheckConfig.java:1348)
]]>
</Check>
</BICheckConfig>
when I was transfering the collection from warehouse builder to database I recieve some error messages.
but when I try to connect to database from bibeans every thing was ok so I thougth maybe it is because of that.
and that about bibdemo why it doesn't work???
it works before and I check it with bi_checkconfig
thanks ,
shima

"javax.servlet.jsp.JspException: null" When trying to use JSTL

Hello,
I am trying to use some taglibs from Apache but I am getting the following error when trying to access the relevant page:
org.apache.jasper.JasperException: javax.servlet.jsp.JspException: null
     org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
     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
org.apache.jasper.JasperException: javax.servlet.jsp.JspException: null
     org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:510)
     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)
     org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
     org.apache.jsp.Questions_jsp._jspService(Questions_jsp.java:42)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     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.servlet.jsp.JspException: null
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:854)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:791)
     org.apache.jsp.WEB_002dINF.EL_005f2_jsp._jspService(EL_005f2_jsp.java:171)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     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)
     org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
     org.apache.jsp.Questions_jsp._jspService(Questions_jsp.java:42)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     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
java.lang.reflect.InvocationTargetException
     sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     java.lang.reflect.Method.invoke(Method.java:597)
     org.apache.taglibs.standard.tag.common.core.SetSupport.doEndTag(Unknown Source)
     org.apache.jsp.WEB_002dINF.EL_005f2_jsp._jspx_meth_c_set_0(EL_005f2_jsp.java:208)
     org.apache.jsp.WEB_002dINF.EL_005f2_jsp._jspService(EL_005f2_jsp.java:113)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     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)
     org.apache.jasper.runtime.JspRuntimeLibrary.include(JspRuntimeLibrary.java:966)
     org.apache.jsp.Questions_jsp._jspService(Questions_jsp.java:42)
     org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:332)
     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)My web.xml file is as follows:
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee/web-app_2_4.xsd"
version="2.4">
<display-name>Jsp_Ex09 - JSP Standard Tag Library</display-name>
<welcome-file-list>
<welcome-file>welcome.jsp</welcome-file>
</welcome-file-list>
<jsp-config>
<taglib>
<taglib-uri>/simplequestions</taglib-uri>
<taglib-location>/WEB-INF/tlds/simplefaq.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://java.sun.com/jsp/jstl/core</taglib-uri>
<taglib-location>/WEB-INF/tlds/c.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://java.sun.com/jsp/jstl/fmt</taglib-uri>
<taglib-location>/WEB-INF/tlds/fmt.tld</taglib-location>
</taglib>
<jsp-property-group>
<url-pattern>*.jsp</url-pattern>
<el-ignored>false</el-ignored>
<scripting-invalid>true</scripting-invalid>
</jsp-property-group>
</jsp-config>
</web-app>I have the standard and jstl jars in my lib directory and the relevant tlds files int the tlds directory. I am using Tomcat 5.5 and J2EE 5.
The jsp in question is as follows:
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
<%@taglib uri="http://java.sun.com/jsp/jstl/fmt" prefix="fmt"%>
<html>
<head>
<title>JSTL Q2</title>
</head>
<body>
<h1>JSTL Question 2</h1>
<h2>How do I use the JSTL?</h2>
<jsp:useBean id="questions" class="com.apress.faq.Questions"
scope="page">
<jsp:setProperty name="questions" property="topic" value="EL"/>
</jsp:useBean>
<table border="1">


<tr><th>tag</th><th>result</th></tr>

<tr><td><c:out value="${'${'}questions.topic}"/></td>
<td><c:out value="${questions.topic}"/></td>
</tr>

<c:set target="${questions}" property="topic" value="JSTL" />
<tr>
<td><c:set target="${'${'}questions}" property="topic"
value="JSTL"/>
</td>
<td><c:out value="${questions.topic}"/></td>
</tr>

<c:if test="${questions.topic == 'EL'}">
<tr><td>This row will not be created</td>
<td></td>
</tr>
</c:if>
<c:if test="${questions.topic == 'JSTL'}">
<tr><td>This row was created because the c:if tag result was true</td>
<td></td>
</tr>
</c:if>
</table>
<h2>Multiplication table, 1 - 5</h2>
<!-use the forEach tag to create a table -->
<table border="1">
<tr><td></td><td>1</td><td>2</td><td>3</td><td>4</td><td>5</td></tr>
<c:forEach var="i" begin="1" end="5">
<tr><td><c:out value="${i}"/></td>
<c:forEach var="j" begin="1" end="5">
<td><c:out value="${i*j}"/></td>
</c:forEach>
</tr>
</c:forEach>
</table>
<h2>Formatting numbers</h2
<br><fmt:formatNumber value="23.456" type="number" /> results in
<fmt:formatNumber value="23.456" type="number" />
<br><fmt:formatNumber type="currency">23.456
</fmt:formatNumber> results in <fmt:formatNumber
type="currency">23.456</fmt:formatNumber>
<br><fmt:formatNumber value=".23456" type="percent"/> results
in <fmt:formatNumber value=".23456" type="percent"/>
<br><fmt:formatNumber value=".23456" type="percent"
minFractionDigits="2"/> results in <fmt:formatNumber
value=".23456" type="percent" minFractionDigits="2"/>
</body>
</html>Can anyone spot the problem?
Sorry for such a big post!

ava.lang.reflect.InvocationTargetException
     sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     java.lang.reflect.Method.invoke(Method.java:597)
     org.apache.taglibs.standard.tag.common.core.SetSupport.doEndTag(Unknown Source)From the stacktrace, it appears to be from a <c:set> tag.
Invocation target exception would meant that an error was encountered calling the setter.
That would focus on this part of the code:

<c:set target="${questions}" property="topic" value="JSTL" />
<tr>
<td><c:set target="${'${'}questions}" property="topic"
value="JSTL"/>
</td>That nesting of ${ } inside ${} looks dodgy to me. What is it you are trying to achieve?

Javax.servlet.jsp.JspException: Exception creating bean of class ProdFormFB

Hi I am trying to deploy a struts based web application using "DynaActionForms"
When I am trying to access the jsp page I am getting the following error.
I am providing as much as details as it can help full to u.
Thank u.
FormBean class ProdFormFB.java
========================================================================
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.struts.action.*;
public class ProdFormFB extends DynaActionForm
public void reset(ActionMapping mapping, HttpServletRequest request)
     System.out.println("reset() called. . . . ");
set("prodId", new Integer(10));
     set("prodName", new String("XYZ"));
     set("price", new Float(22.25));
public ActionErrors validate(ActionMapping mappings, HttpServletRequest request)
System.out.println("=== validate() called ===");
ActionErrors aes=new ActionErrors();
     System.out.println("aes.size() ===> "+aes.size());
     String prodName = (String)get("prodName");
     if( prodName==null || prodName.equals("") )
          System.out.println("Adding prodName.req error . . . . . . .");
          aes.add("prodName",new ActionError ("prodName.req.error"));
return aes;
========================================================================
Action Class ProdAction.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.struts.action.*;
public class ProdAction extends Action
   public ActionForward execute(ActionMapping mapping,ActionForm form, HttpServletRequest request,HttpServletResponse response)throws Exception
      ProdFormFB fb = (ProdFormFB)form;
      System.out.println("fb.get('prodId')==> "+fb.get("prodId"));
      System.out.println("fb.get('prodName')==> "+fb.get("prodName"));
      System.out.println("fb.get('price')==> "+fb.get("price"));
       return mapping.findForward("dres");
}========================================================================
jsp page : npform.jsp
<%@ taglib uri = "/tags/struts-html" prefix="html"%>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean" %>
<html:html>
<head>
     <title>Product Form</title>
</head>
<body>
          <html:form action="/pAction">
          <center>
            <br><br>
            <center> <font color="green" style="bold" size=5>Product Form using Struts</font></center><br><br>
            <table>
            <tr>
               <td>
                      <b> Product ID : </b> <html:text property="prodId"/> </td><td><font color="red" style="bold"><html:errors property="prodId"/> </font>
             </td>
         </tr>
           <tr>
               <td>
                      <b> Prod Name : </b> <html:text property="prodName"/> </td><td> <font color="red" style="bold"> <html:errors property="prodName"/> </font>
             </td>
          </tr>

           <tr colspan="2" align="center">
               <td>
                  <html:submit property="submit" value="Store"/>
            </td>
          </tr>
          </table>
                      </center>
       </html:form>
</body>
</html:html>========================================================================
Configuration in struts-config.jsp
    <form-beans>
         <form-bean name="NewProdForm" type="ProdFormFB">
              <form-property name="prodId" type="java.land.Integer"/>
              <form-property name="prodName" type="java.land.String"/>
              <form-property name="price" type="java.land.Float"/>
        </form-bean>
</form-beans>
<action-mappings>
       <action name="NewProdForm" path="/pAction" type="ProdAction" input="/npform.jsp" validate="true" scope="request">
              <forward name="dres" path="/dres.jsp"/>
       </action>
</action-mappings>========================================================================
After deploying successfully I am I am entering the following URL
http://localhost:7001/oursapp/npform.jsp
The following Exception on Browser: and also on the server console ......
javax.servlet.jsp.JspException: Exception creating bean of class ProdFormFB: {1}
     at org.apache.struts.taglib.html.FormTag.initFormBean(FormTag.java:463)
     at org.apache.struts.taglib.html.FormTag.doStartTag(FormTag.java:433)
     at jsp_servlet.__npform._jspService(__npform.java:178)
     at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
     at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run(ServletStubImpl.java:1006)
     at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:419)
     at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java:315)
     at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:6718)
     at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
     at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
     at weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletContext.java:3764)
     at weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java:2644)
     at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:219)
     at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:178)
Plz... Help me out is solving the problem .......
my email :   [email protected]

I never used DynaActionForm, what I have noticed here is, don't you need to declare the form bean? I may be wrong.
<form-beans>
<form-bean name="newProdForm" type="com.package.form.NewProdForm"></form-bean>
</form-beans>

Root cause of ServletException.javax.servlet.jsp.JspException:

Hi guys, hope you all can help me on this.
I have added this repeater netui tag into my jsp page and always get this servletException
error, not very sure why. when i remove this repeater tag everything seems alright.
anyone can give me any hints or clue on this? the checkbox repeater tag is wrong,
i need to ask you guys on that the next posting! thanks!
The Repeater tag in my jsp
<netui-data:callPageFlow method="getFunctionHashtable" resultId="funcNamehashtable"/>
<netui-data:repeater dataSource="{actionForm.functionHashtable}">
<netui-data:repeaterHeader>
<table border="1">
<tr>
<td><b>Functions</b></td>
<td><b>Assign/Unassign</b></td>
</tr>
</netui-data:repeaterHeader>
<netui-data:repeaterItem>
<tr>
<td>
<netui:label value="{container.item}" />
</td>
<td>
<netui:checkBox dataSource="{pageFlow.initchecked}" onClick="checkFunctions();"/>
</td>
</tr>
</netui-data:repeaterItem>
<netui-data:repeaterFooter>
</table>
</netui-data:repeaterFooter>
</netui-data:repeater>
and here's the exception error i have got.
id=16240211,name=RapidWeb,context-path=/RapidWeb)] Root cause of ServletExceptio
n.
javax.servlet.jsp.JspException: Input/output error: java.net.SocketException:
Co
nnection reset by peer: socket write error
at org.apache.struts.util.ResponseUtils.write(ResponseUtils.java:160)
at com.bea.wlw.netui.tags.html.Html.doEndTag(Html.java:282)
at jsp_servlet._assignunassignfunctions.__getrole._jspService(getRole.js
p:78)
at weblogic.servlet.jsp.JspBase.service(JspBase.java:33)
at weblogic.servlet.internal.ServletStubImpl$ServletInvocationAction.run
(ServletStubImpl.java:971)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubIm
pl.java:402)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:28)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.ja
va:27)
at com.bea.wlw.netui.pageflow.PageFlowJspFilter.doFilter(PageFlowJspFilt

Hi
The message java.net.SocketException: Connection reset by peer is caused by network problem or even forced closure of IE browser.
This should not affect functionality and is harmless.
If the page process is too long, the user closed the browser or the user reloaded the page, this error could happen. Reloading a page or closing the browser is very common, and so we should not log this message.
BEA has a known issue CR219602 where we catch the SocketException and ignore the logging in the doEndTag() method.
If this error message is annonying please contact BEA Support to get a patch.
Thanks
Vimala

How to solve javax.servlet.jsp.JspException: duplicate Id for a component?

Dear everyone,
I have built some customized JSF components. In the taglib, there is attribute "id" for my components. There is no problem when the page is run, but when I click submit button, there are errors.
javax.servlet.jsp.JspException: duplicate Id for a component form1:dojoComboBox1 at com.sun.faces.taglib.jsf_core.ViewTag.doAfterBody(ViewTag.java:191) at _andychun._jspService(_andychun.java:190) [andychun.jsp] at com.orionserver[Oracle Containers for J2EE 10g (10.1.3.1.1) ].http.OrionHttpJspPage.service(OrionHttpJspPage.java:59) at oracle.jsp.runtimev2.JspPageTable.service(JspPageTable.java:462) at oracle.jsp.runtimev2.JspServlet.internalService(JspServlet.java:598) at oracle.jsp.runtimev2.JspServlet.service(JspServlet.java:522)
Please kindly help solve this problem. Thank you.
Best Regards,
David

Alex,
my guess is that because you copied content from the
first page to the next, you created JSF components
with the same ID. JSF components must have unique IDs
though.
FrankHello Frank,
Thanks for your reply. The thing is in the first page I do not have much id's specified/defined. And in the second page what I did was to take out all id's to see if it was conflicting. When I tried it again I still got the error. So the id's are being generated automatically if seems.
Also is it that JSF components should have unique id's for a particular page or all pages in the JSF application?
Any other sugguestions. I hope you understand what I am saying. If you have any questions or uncertainties fell free to ask me.
Thanks,
Alex.

Problem in connecting JSP with Oracle 9i.

Hi,
I am having problem in connecting JSP with Oracle 9i.
I am using windows XP and my JDK version is 1.4. For executing JSP I am using
"jakarta-tomcat-5.5.4-preconfigured". My database name is global.
I have set java_home, j2ee_home, oracle_home, path, classpath as follows:
j2ee_home=c:\sun\appserver
java_home=c:\sun\appserver\jdk
oracle_home=C:\oracle\ora92
path=C:\Sun\AppServer\bin;C:\Sun\AppServer\jdk\bin;C:\oracle\ora92\bin
classpath=C:\Sun\AppServer\lib\j2ee.jar;C:\oracle\ora92\jdbc\lib\ojdbc14.jar;C:\oracle\ora92\jdbc\lib\nls_charse
t12.zip
My code is as follows:
<%@ page language="java" %>
<%@ page import ="java.sql.*"%>
<%
try
DriverManager.registerDriver(new oracle.jdbc.OracleDriver());
Connection conn = DriverManager.getConnection ("jdbc:oracle:oci8:@global", "scott", "tiger");
catch(SQLException e)
out.println(""+e);
out.println("Connected");
%>
I tried other program:
<%@ page language="java" %>
<%@ page import ="java.sql.*"%>
<%
Class.forName("oracle.jdbc.driver.OracleDriver");
Connection conn = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:global","scott","tiger");
out.println("Connected");
%>
I am getting following error:
exception
org.apache.jasper.JasperException: Unable to compile class for JSP
An error occurred at line: 5 in the jsp file: /jsp/oracle.jsp
Generated servlet error:
oracle.jdbc.OracleDriver cannot be resolved or is not a type
     org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:84)
     org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:328)
     org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:389)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:288)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:267)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:255)
     org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:556)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:296)
     org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:245)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
Thanking you in advance,
Anurag

maneesh108 wrote:
hi this is maneesh1) Read the thread it has been answered.
2) The thread is very old. Don't resurrect old threads.
I'm locking this zombie thread.
Kaj

Problem with importing jsp packages

Hi guys. I'm having a problem compiling a class that imports jsp packages.
I'm getting errors along the lines of:
C:\>javac HelloTag.java
HelloTag.java:4: package javax.servlet.jsp does not exist
import javax.servlet.jsp.*;
^
HelloTag.java:5: package javax.servlet.jsp.tagext does not exist
import javax.servlet.jsp.tagext.*;
- I've copied jsp-api.jar and servlet-api.jar to a folder that's in my path: C:\Program Files\Java\jre1.5.0_03\lib\ext
Any suggestion?
Thanks.

U have to add the path into the classpath
set CLASSPATH=%CLASSPATH%;jsp-api.jar ....
the compile in the same cmd window
Do not use the CLASSPATH environment variable. Use the -classpath option while compiling and specify the path to your jar file.
javac -classpath <path to jar file> filename.javacheers,
ram.

Java.lang.NoSuchMethodError: javax.servlet.jsp.PageContext:

          I Have exactly the same error and I would like to have a solution.....
          It happens when weblogic tries to compile a jsp page.
          So the result on the browser is the original jsp page: The jsp tags are not parsed.
          This problem exists on my Weblogic 4.5.1 sp11 (on unix) nut not on my weblogic 4.5.2 NT ?
          Any idea ?
          Thanks.
          Chris Opacki <[email protected]> wrote:
          >Has anyone had this error and found a way to fix it?
          >
          >java.lang.NoSuchMethodError: javax.servlet.jsp.PageContext: method
          ><init>(Ljavax/servlet/jsp/JspFactory;)V not found

Concurrency problem in Servlets, JSP

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