Javax.servlet.*, javax.servlet.http are mot getting resolved in eclipse 3.2

Can any one tell why after importing javax.servlet.* and javax.servlet.http is not getting resolved in eclipse 3.2 IDE.

right click on the project in the navigator window and select properties.
you will get property window and then select library tab and click the add library button to add the jar file in which javax.serv... packages are defined.

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Appearing following way
UI_APPR_XML_PROVISIONER_EMPTY_TABLE
UI_APPR_JAVA_LIST_PROVISIONING_REQUESTS_LABEL
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Any help on this will be appreciated.

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Un-register and re-register the locations
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While running my app I get the below error - have different Class objects for the type javax/servlet/http/HttpServletRequest used in the signature

I am running ATG[10.1.2] app on Jboss [EAP 5.1.0 GA] I am able to open dyn/admin however when I start my app I get the below error
java.lang.LinkageError: loader constraint violation: when resolving method "atg.servlet.ServletUtil.setSessionConfNumCacheRequest(Ljavax/servlet/http/HttpServletRequest;)Ljavax/servlet/http/HttpServletRequest;" the class loader (instance of org/jboss/classloader/spi/base/BaseClassLoader) of the current class, atg/filter/dspjsp/PageFilter, and the class loader (instance of org/jboss/classloader/spi/base/BaseClassLoader) for resolved class, atg/servlet/ServletUtil, have different Class objects for the type javax/servlet/http/HttpServletRequest used in the signature
at atg.filter.dspjsp.PageFilter.doFilter(PageFilter.java:215)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at atg.servlet.ForwardFilter.doFilter(ForwardFilter.java:263)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at atg.servlet.ErrorFilter.doFilter(ErrorFilter.java:279)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:638)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:446)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:382)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:310)
at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:416)
at org.apache.catalina.core.StandardHostValve.status(StandardHostValve.java:342)
at org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:286)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
at java.lang.Thread.run(Thread.java:680)
11:22:47,413 ERROR [[localhost]] Exception Processing ErrorPage[errorCode=500, location=/global/errorPage500.jsp]

The supported JBoss version for 10.1.2 is JBoss EAP 5.1.2 but I don't think that your issue is caused because of this. Your issue is more of an environmental thing as you are probably getting two different versions getting loaded of class javax.servlet.http.HttpServletRequest and so correspondingly two different Class objects as the error shows. One reason for this could be if you include any server-specific libraries (in present case the Servlet API JAR which contains the class javax.servlet.http.HttpServletRequest) of a different version in the /WEB-INF/lib of your web application. Try removing it from there if so and see if that helps.

Package javax.servlet.http does not exist

Hello All,
A few problems here
1. My classpath doesnt seem to work.:
.;"C:\Program Files\Apache Software Foundation\Tomcat 6.0\lib\servlet-api.jar"
2. As a result, i get many errors in my simple code, but there are still a few that are not related to javac not recognizing the servlet api.
I also tried setting the classpath at the command line (event hough its temporary)
set classpath="C:\Program Files\Apache Software Foundation\Tomcat 6.0\lib\servlet-api.jar"
but the servlet package is still not recognized
I have 2 classes, one to read the database connection details from a file and another class, my servlet.
Servlet Code:
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class CustomQuery extends HttpServlet
     public void init() throws ServletException
          EstablishDBConnetion.establishConnection();
     public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
          response.setContentType("text/html");
          PrintWriter printer = new response.getWriter();
          String title = "Result from custom query";
          Statement stmt = EstablishDBConnetion.establishConnection.con.createStatement();
          ResultSet rs = stmt.executeQuery("select customerID from customer");
          while(rs.next())
               printer.println("<html> <head><title>" + title + "</title><br><br><table border=\"0\"> <tr><td>" + rs.getString(1));
          rs.close();
          stmt.close();
          EstablishDBConnetion.establishConnection.con.close();
Database connection code
import java.io.*;
import java.sql.*;
import java.util.StringTokenizer;
class EstablishDBConnetion
     public static void establishConnection()
          try
               String dbDriver = "";
               String dbUrl = "";
               String dbName = "";
               String dbUser = "";
               String dbPassword = "";
               String newLine = "";
               BufferedReader fileRead = new BufferedReader(new FileReader("connection.txt"));
               boolean readerStatus = fileRead.ready();
               newLine = fileRead.readLine();
               while (readerStatus)
                    StringTokenizer st = new StringTokenizer(newLine, ",");
                    while (st.hasMoreTokens())
                        dbDriver   = st.nextToken();
                       dbUrl      = st.nextToken();
                       dbName     = st.nextToken();
                        dbUser     = st.nextToken();
                        dbPassword = st.nextToken();
                    readerStatus = fileRead.ready();
               Class.forName(dbDriver);
               String url = dbUrl + dbName;
               System.out.print(url);
               Connection con = DriverManager.getConnection(url, dbUser, dbPassword);
          catch (IOException e)
               System.out.println("IO exception in establishConnection()");
               e.printStackTrace();
          catch (java.lang.Exception ex)
               System.out.println("General exception in establishConnection()");
               ex.printStackTrace();
     public static void main(String[] args)
          //EstablishDBConnetion edbc = new EstablishDBConnetion();
          establishConnection();
}also, full error list below
CustomQuery.java:4: package javax.servlet does not exist
import javax.servlet.*;
^
CustomQuery.java:5: package javax.servlet.http does not exist
import javax.servlet.http.*;
^
CustomQuery.java:7: cannot find symbol
symbol: class HttpServlet
public class CustomQuery extends HttpServlet
^
CustomQuery.java:10: cannot find symbol
symbol : class ServletException
location: class CustomQuery
public void init() throws ServletException
^
CustomQuery.java:16: cannot find symbol
symbol : class HttpServletRequest
location: class CustomQuery
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
^
CustomQuery.java:16: cannot find symbol
symbol : class HttpServletResponse
location: class CustomQuery
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
^
CustomQuery.java:16: cannot find symbol
symbol : class ServletException
location: class CustomQuery
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
^
CustomQuery.java:19: package response does not exist
PrintWriter printer = new response.getWriter();
^
CustomQuery.java:24: cannot find symbol
symbol : variable establishConnection
location: class EstablishDBConnetion
Statement stmt = EstablishDBConnetion.establishConnection.con.createStatement();
^
CustomQuery.java:39: cannot find symbol
symbol : variable establishConnection
location: class EstablishDBConnetion
EstablishDBConnetion.establishConnection.con.close();
^
10 errors
I appreciate your help
Message was edited by:
paulchwd
null
Message was edited by:
paulchwd

The library is in tomcat/common/lib, not in tomcat/lib.

Package javax.servlet does not exist, package javax.servlet.http does not

Dear All,
I am a newbie to JAVA.
I installed JDK1.6.0_04, then NetBeans IDE 6.0
I tried compiling an example servlet, but got this error message:
package javax.servlet does not exist, package javax.servlet.http does not exist
I tried locating these packages, but in vain. I also tried setting the CLASSPATH to many values, still it did not work.
Can anyone, please, help me with this.
Should I be able to see/locate these packages, do I have to download them?
Thank you very much.

davidgoodman wrote:
Dear All,
I am a newbie to JAVA.
I installed JDK1.6.0_04, then NetBeans IDE 6.0
I tried compiling an example servlet, but got this error message:
package javax.servlet does not exist, package javax.servlet.http does not exist
What servlet/JSP engine do you plan to deploy to? Tomcat, perhaps?I think it's Tomcat (C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14). Are there other engines that come with NetBeans IDE 6.0 (when I downloaded NetBeans, I chose ALL)
>
If so, you'll need to put the servlet JAR in your CLASSPATH. (servlet-api.jar for Tomcat 5.5 and earlier, servlet.jar for 6.0 >and later.)
I tried locating these packages, but in vain.
You won't find them until you realize that you have to deploy that servlet someplace.How to deploy?
I also tried setting the CLASSPATH to many values, still it did not work.
See above. What were you planning to set CLASSPATH to?First I set to:
C:\Program Files\Apache Software Foundation\Apache Tomcat 6.0.14\lib (because I found jar named servlet-api.jar in this folder)
Later I added this:
C:\Program Files\Java\jdk1.6.0_04\lib (out of trial-and-fail)
Finally I added some paths that lead to a library such as
C:\Program Files\glassfish-v2\lib
C:\Program Files\glassfish-v2\lib\ant\lib
Can anyone, please, help me with this.
Should I be able to see/locate these packages, do I have to download them?
You have to get a servlet/JSP engine. Step 1.Thank you for your help

Javax.servlet.http.* error

I am trying to compile a file, but got the error message "package javax.servlet.http does not exist",
"import javax.servlet.http.*"
It seems to me that this particular package is missing. how and where exactlly do I get this particular package and make it to work??
thanks

As you are using the package I assume that you're targetting a servlet engine (such as Tomcat) or a J2EE server. The package is in servlet.jar which is part of the binary release of the container that you are using.
You can download containers from the following links:
http://java.sun.com/products/servlet/index.html
http://jakarta.apache.org/tomcat/index.html

Tomcat 5 can�t find javax.servlet.http.HttpServlet

Hi.
I don�t know if this is a simple question or not, but i didn�t find anything solving this problem and
i�m new to tomcat......
I�m trying to deploy my web application in my system. (Windows XP , j2sdk1.4.2_02, jakarta Tomcat 5, jakarta struts 1.1 and jakarta taglibs 1.1).No problems while compiling the .java classes and checked all the .jar files that my application needs to work (or that is what I think). I expand my .war file at /webapps on tomcat directory and startup Tomcat. Tomcat starts up but while starting I get the following errors...
17-feb-2004 17:58:50 org.apache.coyote.http11.Http11Protocol init
INFO: Initializing Coyote HTTP/1.1 on port 8080
17-feb-2004 17:58:51 org.apache.catalina.startup.Catalina load
INFO: Initialization processed in 4948 ms
17-feb-2004 17:58:51 org.apache.catalina.core.StandardService start
INFO: Starting service Catalina
17-feb-2004 17:58:51 org.apache.catalina.core.StandardEngine start
INFO: Starting Servlet Engine: Apache Tomcat/5.0.18
17-feb-2004 17:58:51 org.apache.catalina.core.StandardHost start
INFO: XML validation disabled
17-feb-2004 17:58:51 org.apache.catalina.core.StandardHost getDeployer
INFO: Create Host deployer for direct deployment ( non-jmx )
17-feb-2004 17:58:51 org.apache.catalina.core.StandardHostDeployer install
INFO: Processing Context configuration file URL file:C:\softProyecto\Tomcat5\conf\Catalina\localhost\admin.xml
17-feb-2004 17:58:55 org.apache.commons.digester.Digester endElement
GRAVE: End event threw exception
java.lang.reflect.InvocationTargetException
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at org.apache.commons.beanutils.MethodUtils.invokeMethod(MethodUtils.java:252)
     at org.apache.commons.digester.SetNextRule.end(SetNextRule.java:256)
     at org.apache.commons.digester.Rule.end(Rule.java:276)
     at org.apache.commons.digester.Digester.endElement(Digester.java:1058)
     at org.apache.catalina.util.CatalinaDigester.endElement(CatalinaDigester.java:123)
     at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
     at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown Source)
     at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source)
     at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
     at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
     at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
     at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
     at org.apache.commons.digester.Digester.parse(Digester.java:1567)
     at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:520)
     at org.apache.catalina.core.StandardHost.install(StandardHost.java:906)
     at org.apache.catalina.startup.HostConfig.deployDescriptors(HostConfig.java:527)
     at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:472)
     at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1008)
     at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:394)
     at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:166)
     at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1133)
     at org.apache.catalina.core.StandardHost.start(StandardHost.java:832)
     at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1125)
     at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:518)
     at org.apache.catalina.core.StandardService.start(StandardService.java:519)
     at org.apache.catalina.core.StandardServer.start(StandardServer.java:2345)
     at org.apache.catalina.startup.Catalina.start(Catalina.java:598)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:297)
     at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:398)
Caused by: java.lang.NoClassDefFoundError: javax/servlet/http/HttpServlet
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
it seems like C:\softProyecto\Tomcat5\conf\Catalina\localhost\admin.xml (C:\softproyecto\tomcat5 = tomcat�s home directory) needs javax.servlet.http.HttpServlet. And that comes from a Tomcat .jar file, i think.
After more and more messages..... here it comes my application (MapasRuido)...which needs javax.servlet.http.HttpServlet and compiled ok at compiling time!
INFO: Installing web application at context path /MapasRuido from URL file:C:\softProyecto\Tomcat5\webapps\MapasRuido
17-feb-2004 18:02:48 org.apache.catalina.startup.HostConfig deployDirectories
GRAVE: Error durante el despliegue del directorio MapasRuido de la aplicaci�n web
java.lang.NoClassDefFoundError: javax/servlet/http/HttpServlet
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
     at java.net.URLClassLoader.defineClass(URLClassLoader.java:251)
     at java.net.URLClassLoader.access$100(URLClassLoader.java:55)
     at java.net.URLClassLoader$1.run(URLClassLoader.java:194)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:187)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:289)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:282)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:274)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:235)
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1296)
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1230)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
     at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1677)
     at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:900)
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1350)
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1230)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:302)
     at java.lang.ClassLoader.defineClass0(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:123)
     at org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1677)
     at org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:900)
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1350)
     at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1230)
     at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:979)
     at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:887)
     at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3960)
     at org.apache.catalina.core.StandardContext.start(StandardContext.java:4283)
     at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:866)
     at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:850)
     at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:638)
     at org.apache.catalina.core.StandardHostDeployer.install(StandardHostDeployer.java:320)
     at org.apache.catalina.core.StandardHost.install(StandardHost.java:875)
     at org.apache.catalina.startup.HostConfig.deployDirectories(HostConfig.java:727)
     at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:477)
     at org.apache.catalina.startup.HostConfig.start(HostConfig.java:1008)
     at org.apache.catalina.startup.HostConfig.lifecycleEvent(HostConfig.java:394)
     at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:166)
     at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1133)
     at org.apache.catalina.core.StandardHost.start(StandardHost.java:832)
     at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1125)
     at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:518)
     at org.apache.catalina.core.StandardService.start(StandardService.java:519)
     at org.apache.catalina.core.StandardServer.start(StandardServer.java:2345)
     at org.apache.catalina.startup.Catalina.start(Catalina.java:598)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:297)
     at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:398)
17-feb-2004 18:02:48 org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path from URL file:C:\softProyecto\Tomcat5\webapps\ROOT
17-feb-2004 18:02:48 org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path /servlets-examples from URL file:C:\softProyecto\Tomcat5\webapps\servlets-examples
17-feb-2004 18:02:48 org.apache.catalina.core.StandardHostDeployer install
INFO: Installing web application at context path /tomcat-docs from URL file:C:\softProyecto\Tomcat5\webapps\tomcat-docs
17-feb-2004 18:02:49 org.apache.coyote.http11.Http11Protocol start
INFO: Starting Coyote HTTP/1.1 on port 8080
tomcat�s web applications servlets-examples and tomcat-docs work fine, but my application doesn�t. Is there any relation between those errors? any idea about what happens?
Thank you in advance.

"...The CLASSPATH is ignored by Tomcat, of course. AND javac. AND java. AND Eclipse. AND NetBeans. AND JBuilder. And just about everything else in the Java universe..."
What I mean by this, of course, is that each of these requires you to set the CLASSPATH in the way they expect. None of them even looks for a system environment variable named CLASSPATH. You can waste a lot of time thinking that your CLASSPATH is "all set", but it's not.
Tomcat assumes the following for your Web app's CLASSPATH:
(0) The JDK rt.jar, of course,
(1) All the JARs in TOMCAT_HOME/common/lib,
(2) All the JARs in your WEB-INF/lib,
(3) All the .class files in your WEB-INF/classes
That's it. (Maybe one or two others, but those are the important ones.)
Eclipse and NetBeans have their own way to set CLASSPATH for each project. You'll have to learn how for those IDEs.
The CLASSPATH is still vitally important. The system environment variable just isn't part of it. - MOD

ClassCastException: javax.servlet.http.NoBodyOutputStream

Can anyone tell me what is going on with the following ? Runing WL 6.1 SP2.
          We are getting a fair number of these.
          ####<Mar 27, 2003 6:04:50 PM CST> <Error> <HTTP> <vusdfwdevbld2>
          <VSWA420B91Server> <ExecuteThread: '66' for queue: 'default'> <admin> <>
          <101020> <[WebAppServletContext(1229058,vissys-web,/vissys-web)] Servlet
          failed with Exception>
          java.lang.ClassCastException: javax.servlet.http.NoBodyOutputStream
          at
          weblogic.servlet.ClasspathServlet.sendResource(ClasspathServlet.java:229)
          at weblogic.servlet.ClasspathServlet.doGet(ClasspathServlet.java:94)
          at javax.servlet.http.HttpServlet.doHead(HttpServlet.java:313)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:757)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
          at
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
          :265)
          at
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
          :200)
          at
          weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletCo
          ntext.java:2495)
          at
          weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java
          :2204)
          at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
          at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)


Can anyone tell me what is going on with the following ? Runing WL 6.1 SP2.
          We are getting a fair number of these.
          ####<Mar 27, 2003 6:04:50 PM CST> <Error> <HTTP> <vusdfwdevbld2>
          <VSWA420B91Server> <ExecuteThread: '66' for queue: 'default'> <admin> <>
          <101020> <[WebAppServletContext(1229058,vissys-web,/vissys-web)] Servlet
          failed with Exception>
          java.lang.ClassCastException: javax.servlet.http.NoBodyOutputStream
          at
          weblogic.servlet.ClasspathServlet.sendResource(ClasspathServlet.java:229)
          at weblogic.servlet.ClasspathServlet.doGet(ClasspathServlet.java:94)
          at javax.servlet.http.HttpServlet.doHead(HttpServlet.java:313)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:757)
          at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
          at
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
          :265)
          at
          weblogic.servlet.internal.ServletStubImpl.invokeServlet(ServletStubImpl.java
          :200)
          at
          weblogic.servlet.internal.WebAppServletContext.invokeServlet(WebAppServletCo
          ntext.java:2495)
          at
          weblogic.servlet.internal.ServletRequestImpl.execute(ServletRequestImpl.java
          :2204)
          at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:139)
          at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)

Why javax.servlet.http.HttpServlet is serializable ?

As per serialization definition if super class implements java.io.Serializable then all sub classes are also get that behaviour.
while coming to Servlets : javax.servlet.GenericServlet implents java.io.Serializable and this servlet class is super class for javax.servlet.http.HttpServlet and this also implemts java.io.Serializable. Is there any specific reason ?

Quoting a reply from the link below:
>
Technically, I believe the servlet container is allowed to "passivate" the servlet object to disk, in a similar way that EJB session beans can be. So you're correct to ask the question if your app will fail due to non-serializable fields.
In practise, I've never heard of a container doing this, so it's really just legacy baggage from the bad old days of early J2EE. I wouldn't worry about it.
>
[http://stackoverflow.com/questions/179743/why-does-httpservlet-implement-serializable]

Weblogic 4.5.1 intermittent exception java.lang.ClassCastException: javax.servlet.http.NoBodyOutputStream

When running weblogic 4.5.1 on our staging server we get the following
exceptions happening intermitently
Our other servers have identical code and properties files and they are fine
Tue Jul 11 12:03:53 GMT+01:00 2000:<E> <ServletContext-Servlets> Servlet
failed with RuntimeException
Tue Jul 11 12:03:53 GMT+01:00 2000:<E> <ServletContext-Servlets>
java.lang.ClassCastException: javax.servlet.http.NoBodyOutputStream
at weblogic.servlet.FileServlet.sendFile(Compiled Code)
at weblogic.servlet.FileServlet.doGet(Compiled Code)
at javax.servlet.http.HttpServlet.doHead(Compiled Code)
at javax.servlet.http.HttpServlet.service(Compiled Code)
at javax.servlet.http.HttpServlet.service(Compiled Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
Code)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
Code)
at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
at weblogic.t3.srvr.ExecuteThread.run(Compiled Code)
Tue Jul 11 12:03:53 GMT+01:00 2000:<E> <HTTP> Servlet request terminated
with IOException:
Tue Jul 11 12:03:53 GMT+01:00 2000:<E> <HTTP> java.net.ProtocolException:
Exceeded stated content-length of: 1230 bytes
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Compiled Code)
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.io.IOException.<init>(Compiled Code)
at java.net.ProtocolException.<init>(Compiled Code)
at weblogic.servlet.internal.ServletOutputStreamImpl.print(Compiled Code)
at javax.servlet.ServletOutputStream.println(ServletOutputStream.java:252)
at
weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.
java:307)
at weblogic.servlet.internal.ServletResponseImpl.sendError(Compiled Code)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
Code)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
Code)
at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
at weblogic.t3.srvr.ExecuteThread.run(Compiled Code)
Any ideas ?

When running weblogic 4.5.1 on our staging server we get the following
exceptions happening intermitently
Our other servers have identical code and properties files and they are fine
Tue Jul 11 12:03:53 GMT+01:00 2000:<E> <ServletContext-Servlets> Servlet
failed with RuntimeException
Tue Jul 11 12:03:53 GMT+01:00 2000:<E> <ServletContext-Servlets>
java.lang.ClassCastException: javax.servlet.http.NoBodyOutputStream
at weblogic.servlet.FileServlet.sendFile(Compiled Code)
at weblogic.servlet.FileServlet.doGet(Compiled Code)
at javax.servlet.http.HttpServlet.doHead(Compiled Code)
at javax.servlet.http.HttpServlet.service(Compiled Code)
at javax.servlet.http.HttpServlet.service(Compiled Code)
at weblogic.servlet.internal.ServletStubImpl.invokeServlet(Compiled Code)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
Code)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
Code)
at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
at weblogic.t3.srvr.ExecuteThread.run(Compiled Code)
Tue Jul 11 12:03:53 GMT+01:00 2000:<E> <HTTP> Servlet request terminated
with IOException:
Tue Jul 11 12:03:53 GMT+01:00 2000:<E> <HTTP> java.net.ProtocolException:
Exceeded stated content-length of: 1230 bytes
at java.lang.Throwable.fillInStackTrace(Native Method)
at java.lang.Throwable.fillInStackTrace(Compiled Code)
at java.lang.Throwable.<init>(Compiled Code)
at java.lang.Exception.<init>(Compiled Code)
at java.io.IOException.<init>(Compiled Code)
at java.net.ProtocolException.<init>(Compiled Code)
at weblogic.servlet.internal.ServletOutputStreamImpl.print(Compiled Code)
at javax.servlet.ServletOutputStream.println(ServletOutputStream.java:252)
at
weblogic.servlet.internal.ServletResponseImpl.sendError(ServletResponseImpl.
java:307)
at weblogic.servlet.internal.ServletResponseImpl.sendError(Compiled Code)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
Code)
at weblogic.servlet.internal.ServletContextImpl.invokeServlet(Compiled
Code)
at weblogic.socket.MuxableSocketHTTP.invokeServlet(Compiled Code)
at weblogic.socket.MuxableSocketHTTP.execute(Compiled Code)
at weblogic.t3.srvr.ExecuteThread.run(Compiled Code)
Any ideas ?

How solve import javax.servlet.http.HttpServlet err import javax.servlet.

Hi
I am trying to compile one servlet code using commancd prompt and i get
package javax.servlet.http does not exist import javax.servlet.http.HttpServlet;
error for following code
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
public class SampleServlet extends HttpServlet
public void saveToSession(HttpServletRequest request)
String testparam = request.getParameter("testparam");
request.getSession().setAttribute("testAttribute", testparam);
please help me

Try giving servlet..jar path in the class path variable

Cannot Import javax.servlet.* and javax.servlet.http.*

Hello,
I am a University Student and now doing a project using Servlet and JSP
I have installed WinXP and Tomcat 5.0 on my computer
When I compile the servlet , there are error messages "package javax.servlet does not exist" and "package javax.servlet.http does not exist" coming out.
I have set the classpath already
i.e. %CATALINA_HOME%\common\lib\servlet-api.jar;%CATALINA_HOME%\common\lib\jsp-api.jar
( Of course "%CATALINA_HOME%" = my folder that install the Tomcat )
Can Anybody Explain what is happening and suggest a solution to me?
Please give a hand.

When you ran that command, what happened? Let javac.exe tell you the right answer.
I'd advise two things:
(1) Installing any s'ware in a directory whose name contains spaces (e.g., "Apache Software Foundation" or "Tomcat 5.0") is a very bad idea, IMO. I'd reinstall to a new directory.
(2) Your HelloServlet.java servlet probably doesn't have a package statement in it. Tomcat 5.0 won't play nicely with servlets or beans that aren't in packages. I'd add one and use the -d . option on javac.exe to make sure it created the package directory structure for me.

SAPNoClassDefFoundError: javax.servlet.http.HttpSessionListener

Hi,
I have deployed an application in to Netweaver WAS, and have given a hard reference to one of the libraries which is already deployed in the same server. But when starting the application, it gives an error telling that <b><i>javax.servlet.http.HttpSessionListener</i></b> is not available. I gave the servlet.jar in the classpath and still its giving the same error.
Can anyone tell me what can i do to get rid of this problem? This is the error message iam getting in the defaulttrace file:
<b><i>The error is: com.sap.engine.frame.core.load.SAPNoClassDefFoundError: javax.servlet.http.HttpSessionListener</i></b>

Hi Venkat
Check in the visual admin-deploy service,whether or not your application is deployed.Try to start it.
Also check out the below link
http://help.sap.com/saphelp_nw2004s/helpdata/en/1b/92e4e701b242c2833a7adde6ecad09/frameset.htm
Message was edited by:
Rajat Anand
Message was edited by:
Rajat Anand

Javax.servlet.ServletException: Unable to get connection,DataSource invalid

Can somebody explain this error to me please
javax.servlet.ServletException: Unable to get connection, DataSource invalid: "org.apache.commons.dbcp.SQLNestedException:
Cannot create PoolableConnectionFactory (Server connection failure during transaction. Due to underlying exception:
'java.security.AccessControlException: access denied (java.net.SocketPermission localhost resolve)'.
** BEGIN NESTED EXCEPTION **
java.security.AccessControlException
MESSAGE: access denied (java.net.SocketPermission localhost resolve)
STACKTRACE:
java.security.AccessControlException: access denied (java.net.SocketPermission localhost resolve)
     at java.security.AccessControlContext.checkPermission(AccessControlContext.java:264)
     at java.security.AccessController.checkPermission(AccessController.java:427)
     at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
     at java.lang.SecurityManager.checkConnect(SecurityManager.java:1031)
     at java.net.InetAddress.getAllByName0(InetAddress.java:1117)
     at java.net.InetAddress.getAllByName0(InetAddress.java:1098)
     at java.net.InetAddress.getAllByName(InetAddress.java:1061)
     at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:138)
     at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:277)
     at com.mysql.jdbc.Connection.createNewIO(Connection.java:2817)
     at com.mysql.jdbc.Connection.<init>(Connection.java:1531)
     at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)
     at org.apache.commons.dbcp.DriverConnectionFactory.createConnection(DriverConnectionFactory.java:37)
     at org.apache.commons.dbcp.PoolableConnectionFactory.makeObject(PoolableConnectionFactory.java:290)
     at org.apache.commons.dbcp.BasicDataSource.validateConnectionFactory(BasicDataSource.java:877)
     at org.apache.commons.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:851)
     at org.apache.commons.dbcp.BasicDataSource.getConnection(BasicDataSource.java:540)
     at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.getConnection(QueryTagSupport.java:274)
     at org.apache.taglibs.standard.tag.common.sql.QueryTagSupport.doStartTag(QueryTagSupport.java:159)
     at org.apache.jsp.index_jsp._jspx_meth_sql_query_0(index_jsp.java:100)
     at org.apache.jsp.index_jsp._jspService(index_jsp.java:58)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:97)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:334)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:314)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:264)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:585)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:275)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:245)
     at org.apache.catalina.core.ApplicationFilterChain.access$0(ApplicationFilterChain.java:177)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:156)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:152)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
     at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
     at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
     at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
     at java.lang.Thread.run(Thread.java:595)
** END NESTED EXCEPTION **
Attempted reconnect 3 times. Giving up.)"
     org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:843)
     org.apache.jasper.runtime.PageContextImpl.access$11(PageContextImpl.java:781)
     org.apache.jasper.runtime.PageContextImpl$12.run(PageContextImpl.java:763)
     java.security.AccessController.doPrivileged(Native Method)
     org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:761)
     org.apache.jsp.index_jsp._jspService(index_jsp.java:81)
     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:334)
     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)
     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:585)
     org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:243)
     java.security.AccessController.doPrivileged(Native Method)
     javax.security.auth.Subject.doAsPrivileged(Subject.java:517)
     org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:275)
     org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:161)

The URL url="jdbc:mysql://localhost:3306/wroxcatalog" looks right to me...wroxcatalog is the MySQL database.
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<%@ include file="include.jsp"%>
<sql:setDataSource
     var="datasource"
     driver="com.mysql.jdbc.Driver"
     url="jdbc:mysql://localhost:3306/wroxcatalog"
     user="wroxuser"
     password="wrox" />
<sql:query var="books" dataSource="${datasource}">
     select id, name, description, price from products order by id
</sql:query>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>TryDB</title>
</head>
<body>
<table border="1">
     <tr>
          <td>ID</td><td>Name</td><td>Description</td><td>Price</td>
     </tr>
          <c:forEach items="${books.rows}" var="row">
               <tr>
                    <td><c:out value="${row.id}"/></td>
                    <td><c:out value="${row.name}"/></td>
                    <td><c:out value="${row.description}"/></td>
                    <td><c:out value="${row.price}"/></td>
               </tr>
          </c:forEach>
</table>
</body>
</html>

Service method in javax.servlet.http.HttpServlet

Hi All,
I have a doubt in the service method of javax.servlet.http.HttpServlet
There are two service methods in the javax.servlet.http.HttpServlet.
one is with protected and other is with public access specifier.
In the javadoc it is said that public service method dispatches client requests to the protected service method.
Why this type of design is required.
Instead of having a two service methods, Is it not possible to have a single service method and attain the functionality intended.
Are there any advantages by having two service methods.
I think there may be some idea/functionality behind these for having two service methods , which I am not able to understand.
Would be greatful , if someone can throw light on this .
Thanks,
Dhanasekaran.

This is just a theory, but here goes:
The public service() method takes arguments of ServletRequest and ServletResponse, presumably because that's the signature that the non-HTTP specific servlet engine requires.
The protected service() method of HttpServlet takes arguments of HttpServletRequest and HttpServletResponse and includes HTTP specific functions.
My guess is that the public service() method either casts the arguments to the Http objects or does work to create the Http objects before calling the protected method.

Javax.servlet.*, javax.servlet.http are mot getting resolved in eclipse 3.2

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