Java.lang.NoSuchMethodError using beans and JSP

Hi,
I get a
java.lang.NoSuchMethodError: Unit.UnitBean.execSQL(Ljava/lang/String; Ljava/sql/ResultSet;
when i try to call that method from my jsp page. I can call all other methods in teh bean but I can't understand why it can't find execSQL when it finds every thing else.
Any help would be greatly appreciated.
Mike
Heres a copy of my java bean code:
package Unit;
import java.sql.*;
import java.io.*;
public class UnitBean
     Connection con;
     String error;
     public boolean connect() throws ClassNotFoundException,SQLException
          String StudentNumber = "xxx";
          String strHost = "xxxx";
          String strConnectURL = ("jdbc:postgresql://" + strHost + "/");
          String strUser = "xxxx";
          String strPassword = "xxxxx";
          Class.forName("org.postgresql.Driver");
          con = DriverManager.getConnection(strConnectURL, strUser, strPassword);
          return true;
     public void disconnect() throws SQLException
          con.close();
     public ResultSet execSQL(String sql)throws SQLException
          Statement s = con.createStatement();
          ResultSet rs = s.executeQuery(sql);
          return rs;
     public String test()
          String Mike="HIHIHIHIHI";
          return Mike;
}And the jsp code:
<%@ page language="java" contentType="text/html"%>
<%@ page import="java.sql.*" %>
<%@ page import="java.io.*" %>
<jsp:useBean id="Unit" class="Unit.UnitBean" scope="page"/>
<html>
     <head>
          <title>Test My Bean!!!!???!!?!</title>
     </head>
     <body>
          <%
               String SQL ="Select * from unit where unitid='CMPS2B26'";
               ResultSet rs =null;
               try
                    Unit.connect();
                    rs = Unit.execSQL(SQL);
                    while(rs.next())
                              out.println(rs.getString("unitid"));
                    Unit.disconnect();
               catch(Exception e)
                    out.println("<p>Problem with jsp code" +e);
          %>
          This is a jsp page.
          <p><a href = "http://stuweb3.cmp.uea.ac.uk/~xxxx/index.html">Click here for home page</a>
     </body>
</html>

Yeah, that worked great, thanks a lot. I thought that JSP compiled when you changed it and then visited it, but i've tried that. I just ran ant stop start on my server and it's all working.
Thanks again :)
Mike

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Bediako George wrote:
Hello all,
I am running Weblogic 5.1 on Windows 2000 using the JDK 1.2.2 and the
J2SDKEE 1.2.1.
I have created and successful deployed a state session bean as provided
by the example given at this url:
http://www.weblogic.com/docs51/examples/ejb/basic/statelessSession/index.html
Upon running the client I get the following error:
Beginning TraderClient...
user: system
Creating a trader
There was an exception while creating and using the Trader.
This indicates that there was a problem communicating with the server:
java.rmi.RemoteException: ; nested exception is:
weblogic.rmi.ServerError: A RemoteException occurred in the server method
- with nested exception:
[java.lang.NoSuchMethodError: weblogic.ejb.internal.EJBHomeImpl: method
findMethodInfo(Ljava/lang/String;)Lweblogic/ejb/internal/MethodInfo; not
found]
End statelessSession.Client...
Here is my classpath for starting the Trader Client:
java -ms64m -mx128m -classpath
%WEBLOGIC_HOME%\classes;%WEBLOGIC_HOME%\lib\weblogic510sp11.jar;%WEBLOGIC_HOME%\lib\weblogic510sp11boot.jar;%WEBLOGIC_HOME%\lib\weblogicaux.jar;%WEBLOGIC_HOME%\lib\weblogicbeans.jar;%WEBLOGIC_HOME%\lib\weblogic-tags-510.jar;%WEBLOGIC_HOME%\lib\rmiForMs;%J2SDK_HOME%/lib/j2ee.jar;D:\jdk1.2.2/lib/dt.jar;%PM_ROOT%/lib/hoejbserver.jar;%PM_ROOT%/lib/jcert.jar;%PM_ROOT%/lib/jndi.jar;%PM_ROOT%/lib/jnet.jar;%PM_ROOT%/lib/jsse.jar;%PM_ROOT%/lib/junit.jar;%PM_ROOT%/lib/ldap.jar;%PM_ROOT%/lib/pminput.jar;%PM_ROOT%/lib/pmipdr.jar;%PM_ROOT%/lib/pmopenview.jar;%PM_ROOT%/lib/pmtmn.jar;%PM_ROOT%/lib/pmtools.jar;%PM_ROOT%/lib/pmutil.jar;%PM_ROOT%/lib/pricemaker.jar;%PM_ROOT%/lib/providerutil.jar;%PM_ROOT%/lib/test.jar;%PM_ROOT%/lib/classes12.zip;%PM_ROOT%/lib/hoejbserver.jar;%PM_ROOT%/lib/hoejbclient.jar
com.rii.pricemaker.ho.ejb.client.trader.TraderClient
"t3://localhost:7001" "system" "weblogic"
Here is my startup script for the web logic server:
java -classpath c:\weblogic\classes\boot
-Dweblogic.class.path=c:\weblogic\classes;c:\weblogic\license;c:\weblogic\lib\weblogicaux.jar;c:\weblogic\myserver\serverclasses
-Djava.security.manager
-Djava.security.policy==c:\weblogic\weblogic.policy
-Dweblogic.system.home=c:\weblogic weblogic.Server
Could anyone please give me a clue as to what I might be doing wrong?
Thanks
Bediako George

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.
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          This problem exists on my Weblogic 4.5.1 sp11 (on unix) nut not on my weblogic 4.5.2 NT ?
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Error java.lang.NoSuchMethodError while using Lexalytics

Hello,
I have a Linux 64bit environment with the complete Endeca Information Discovery 2.4 installed. When I try to use the Text Enrichment component I get the error:
java.lang.NoSuchMethodError
I have edited the .bash_profile file with the parameters that are needed to use Lexalytics:
lxainstall=/home/oracle/Oracle/Endeca/Lexalytics
export lxainstall
LD_LIBRARY_PATH=$lxainstall/salience/lib
export LD_LIBRARY_PATH
JAVA_HOME=/usr/java/jdk1.6.0_45
export JAVA_HOME
JAVA_OPTS="-Djava.library.path=$LD_LIBRARY_PATH"
export JAVA_OPTS
PATH=$JAVA_HOME/bin:$PATH:$HOME/bin:$lxainstall
export PATH
Also when I try to export the LD_LIBRARY_PATH and reboot my system, my desktop doesn't load and I see no icons on my desktop. I can start programs with the top menu.
I have installed version 5.1 of Lexalytics.
Does anybody know why I get this error?
Thanks!
Marco

Hi Marco, I had the same problem. Instead of loading LD_LIBRARY_PATH in .BASH_PROFILE I made a shell script that first load LD_LIBRARY_PATH and then start integrator. Now it is working fine for me.

Hi frnds i want to help in servlet,java bean and JSP

hi friends i'm right now in M.SC(IT) and i want to do project in SERVLET,,JAVA BEANS and JSP ,
so pls give me a title about that
NOTE: I develop a project in group(2 persons there)
my email id is : [email protected] , [email protected] , [email protected]

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Java.lang.NoSuchMethodError but method is found in both java and class file

Hi All,
I am working on adding a new component to Trips and Expense but I'm getting an exception and I have no idea why. Its claiming a java.lang.NoSuchMethodError in class IPrivateVcTraAllMyTrips yet the method is there.
When I step through the code I can get to the point where it tries to attach the component then before it actually crashes, I hold ctrl and click on the method that it claims does not exist. The code brings me to the IPrivateVcTraAllMyTrips java code and to the method ... so it is there in my sources. I then went to my bin directory and decompiled the IPrivateVcTraAllMyTrips class and found the method there as well. It seems as tho its not actually being deployed.
Does anyone have any suggestions?
Exception Stack ##
Root Cause
The initial exception that caused the request to fail, was:
   java.lang.NoSuchMethodError: com.sap.xss.tra.vc.allmytrips.wdp.IPrivateVcTraAllMyTrips.wdGetFcObjectSelectionComponentUsage()Lcom/sap/tc/webdynpro/progmodel/api/IWDComponentUsage;
    at com.sap.xss.tra.vc.allmytrips.VcTraAllMyTrips.onInit(VcTraAllMyTrips.java:262)
    at com.sap.xss.tra.vc.allmytrips.wdp.InternalVcTraAllMyTrips.onInit(InternalVcTraAllMyTrips.java:408)
    at com.sap.xss.tra.vc.allmytrips.VcTraAllMyTripsInterface.onInit(VcTraAllMyTripsInterface.java:175)
    at com.sap.xss.tra.vc.allmytrips.wdp.InternalVcTraAllMyTripsInterface.onInit(InternalVcTraAllMyTripsInterface.java:205)
    at com.sap.xss.tra.vc.allmytrips.wdp.InternalVcTraAllMyTripsInterface$External.onInit(InternalVcTraAllMyTripsInterface.java:399)

I wish it were that simple. I have restarted but it still threw the same exception.
I ended up reimporting everything again and starting from scratch (a 4 hour process to get back to where I was). The issue is no more.
thx for your reply

Java.lang.NoSuchMethodError: javax.servlet.jsp.tagext.TagAttributeInfo.

Hi ..
i make a simple struts application for login check which when i try to run tomcat i got the following error
i have installed Apache Tomcat/5.5.17, jdk1.5.0_09, eclipse 3.2
please tell me whats wrong with configuration
becoz same code working fine well in different machin..........
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: java.lang.NoSuchMethodError: javax.servlet.jsp.tagext.TagAttributeInfo.<init>(Ljava/lang/String;ZLjava/lang/String;ZZ)V
     org.apache.jasper.servlet.JspServlet.service(JspServlet.java:272)
     javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
root cause
java.lang.NoSuchMethodError: javax.servlet.jsp.tagext.TagAttributeInfo.<init>(Ljava/lang/String;ZLjava/lang/String;ZZ)V
     org.apache.jasper.compiler.TagLibraryInfoImpl.createAttribute(TagLibraryInfoImpl.java:576)
     org.apache.jasper.compiler.TagLibraryInfoImpl.createTagInfo(TagLibraryInfoImpl.java:401)
     org.apache.jasper.compiler.TagLibraryInfoImpl.parseTLD(TagLibraryInfoImpl.java:248)
     org.apache.jasper.compiler.TagLibraryInfoImpl.<init>(TagLibraryInfoImpl.java:162)
     org.apache.jasper.compiler.Parser.parseTaglibDirective(Parser.java:423)
     org.apache.jasper.compiler.Parser.parseDirective(Parser.java:492)
     org.apache.jasper.compiler.Parser.parseElements(Parser.java:1552)
     org.apache.jasper.compiler.Parser.parse(Parser.java:126)
     org.apache.jasper.compiler.ParserController.doParse(ParserController.java:211)
     org.apache.jasper.compiler.ParserController.parse(ParserController.java:100)
     org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:155)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:276)
     org.apache.jasper.compiler.Compiler.compile(Compiler.java:264)
     org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:563)
     org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:303)
     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:803)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.17 logs.
Apache Tomcat/5.5.17

Could you include the content of your JSP page?

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