404 Servlet (servletName)not Available

Hi all,
If this is the wrong place for this message, I apologise in advance. I am completely new to all this.
I have been creating a servlet to access a database and populate a bean with that data. After much trouble and many errors, I am now getting the above error message. I have been running and accessing the servlet without problems but when I made changes within the servlet, the above appeared. I have been playing with try and catch (and not having much luck with where to place them). Anyway what I have is as below:
package all;
import java.io.*;
import java.net.*;
import java.sql.*;
import javax.servlet.*;
import javax.servlet.http.*;
* @author Tina McCaffrey
* @version
public class homePageGenerator extends HttpServlet {
Connection connCms = null;
Statement stmtCms = null;
ResultSet rsHomePage = null;
public void init() throws ServletException {
ServletContext context = getServletContext();
String appDirRoot = context.getRealPath("/");
String connString = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)}; DBQ=" + appDirRoot + "cms.mdb";
public void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException{
HttpSession session = request.getSession(true);
response.setContentType("text/html");
PrintWriter out = response.getWriter();
ServletContext context = getServletContext();
String appDirRoot = context.getRealPath("/");
String connString = "jdbc:odbc:Driver={Microsoft Access Driver (*.mdb)}; DBQ=" + appDirRoot + "cms.mdb";
try
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver").newInstance();
Connection connCms = DriverManager.getConnection (connString);
Statement stmtCms = connCms.createStatement();
String sqlCms = "SELECT * FROM homepage";
ResultSet rsHomePage = stmtCms.executeQuery(sqlCms);
HomePageBean homePageBean = new HomePageBean();
while (rsHomePage.next())
homePageBean.setTitle(rsHomePage.getString("title"));
homePageBean.setHeader(rsHomePage.getString("header"));
homePageBean.setBody(rsHomePage.getString("body"));
homePageBean.setFooter(rsHomePage.getString("footer"));
homePageBean.setContentHeader(rsHomePage.getString("content_header"));
homePageBean.setContentFooter(rsHomePage.getString("content_footer"));
homePageBean.setUserName(rsHomePage.getString("username"));
homePageBean.setPassword(rsHomePage.getString("password"));
homePageBean.setLoginMessage("OK");
homePageBean.setContentPageList("many");
session.setAttribute("homePageBean", homePageBean);
response.sendRedirect("homePage.jsp");
catch (SQLException e)
throw new UnavailableException("Unable to connect");
catch (Exception e)
e.printStackTrace();
finally
if (connCms !=null)
try
rsHomePage.close();
rsHomePage = null;
stmtCms.close();
stmtCms = null;
connCms.close();
catch (SQLException sqle)
sqle.printStackTrace();
connCms = null;
As I said I am very new, so please forgive my ineptness at this.
Thanks for yor help.

hi :-)
can you also post the deployment descriptor for this servlet :-)
and kindy look if their is an error, on your logs in server that
might causing 404 msg.
thank you.
regards,

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Hello all,
I get HTTP STATUS 404 Error which states "The requested resource (/hello) is not available" even thought according to me I am doing everything perfectly.
Here is more information. If you can find out where the proble might be please
let me know because I am working on this for more than 9 hours.
I AM USING-<br>
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Hi..Thanks for all those who have replied earlier. I feel I should add some more information.
I dont know what PACKAGE NAME you are talking about
I am pasting contents of my XML file located in :
**apache-tomcat-5.5.26\webapps\ROOT\WEB-INF\web.xml**
-->
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<servlet-class>org.apache.jsp.index_jsp</servlet-class>
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<url-pattern>/index.jsp</url-pattern>
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- 
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<?xml version="1.0" encoding="ISO-8859-1"?>

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Servlet 2.4 Examples.
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<filter>
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<?xml version="1.0" encoding="ISO-8859-1"?>
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RaHuL

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Hi ,
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regards
srini

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at com.sapportals.portal.prt.dispatcher.Dispatcher$doService.run(Dispatcher.java:522)
at java.security.AccessController.doPrivileged(Native Method)
at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:405)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.servlet.InvokerServlet.service(InvokerServlet.java:156)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:390)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:264)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:347)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:325)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:887)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:241)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:148)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:95)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:160)

check whether user has end user permissions or not

HTTP 404 THE REQUESTED RESOURCE IS NOT AVAILABLE

HELP ME PLEASE !!!!
I HAVE AN APPLICATION THAT USES 3 PAGES: INDEX.HTML , MOTOR.JSP AND MOTOR2.JSP.
THE LOGIC OF APPLICATION IS:
FIRST STEP
THE FIRST STEP IS SHOWING PAGE INDEX.HTML
THERE IS THE FOLLOWING CODE IN THIS PAGE:
<FORM ACTION="DIRECT">
SECOND STEP
DIRECT IS A SERVLET THAT HAVE THE FOLLOWING CODE:
RequestDispatcher rd = req.getRequestDispatcher("Motor.jsp");
rd.forward(req,res);
THIRD STEP
THE PAGE MOTOR.JSP REDIRECT TO A SERVLET ENGINE,
AND SERVLET ENGINE REDIRECT TO A JSP MOTOR2.JSP
USING THE COMMAND:
RequestDispatcher rd = req.getRequestDispatcher("Motor2.jsp");
rd.forward(req,res);
IN THIS THIRD STEP THE PAGE IS ALWAYS REFRESHING
TO ADD INFORMATION TO THE PAGE MOTOR2.JSP.
SOMETIMES THE APPLICATION SHOWS ALL PAGES,
BUT, SOMETIMES THE APPLICATION HAS AN ERROR:
HTTP 404 - THE REQUESTED RESOURCE (/MOTOR2.JSP)
IS NOT AVAILABLE
I�M RUNNING THE APPLICATION IN TOMCAT 4.1.27
IS ANYTHING WRONG WITH THE COMMANDS TO
REDIRECT THE PAGES?
PLEASE HELP ME
THANKS VERY MUCH
JANE PELLIM

Hi,
the refresh of the page is about 2 minutes, because some info
about the process that is running in background
is showing in the motor2 jsp.
the redirects is necessary because in each page
some processing is running in the servlets.
The following is the web.xml configuration:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>
<display-name>Welcome to Tomcat</display-name>
<description>
Welcome to Tomcat
</description>
<context-param>
     <param-name>class_exec</param-name>
     <param-value>class_exec</param-value>
</context-param>
<context-param>
     <param-name>class_erro</param-name>
     <param-value>class_erro</param-value>
</context-param>
<context-param>
     <param-name>log_exec</param-name>
     <param-value>log_exec</param-value>
</context-param>
<context-param>
     <param-name>log_erro</param-name>
     <param-value>log_erro</param-value>
</context-param>
<context-param>
     <param-name>sleep_motor</param-name>
     <param-value>5</param-value>
</context-param>
<context-param>
     <param-name>bancos</param-name>
     <param-value>/motor.conf</param-value>
</context-param>
<servlet>
<servlet-name>Engine</servlet-name>
<servlet-class>com.motor.Engine</servlet-class>
</servlet>
<servlet>
<servlet-name>Direct</servlet-name>
<servlet-class>com.motor.Direct</servlet-class>
</servlet>
<servlet>
<servlet-name>Monitor</servlet-name>
<servlet-class>com.motor.Monitor</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Direct</servlet-name>
<url-pattern>/Direct</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Engine</servlet-name>
<url-pattern>/Engine</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Monitor</servlet-name>
<url-pattern>/Monitor</url-pattern>
</servlet-mapping>
</web-app>
Thanks
Jane

Servlet: "The requested resource is not available"

I'm trying to get my first servlet to run.
I've installed tomcat 4.1.18 and compiled a "HelloWorld" class into
"tomcat_dir"\webapps\root\web-inf\classes\.
when I start tomcat, then open my browser and key
"http://localhost:8080/servlet/HelloWorld"
I get a status 404
"The requested resource (/servlet/HelloWorld) is not available.
what am I doing wrong?
thanks
barry

Register the servlet in the web.xml file.
open ROOT/WEB-INF/web.xml and edit it like:
<web-app>
<servlet>
<servlet-name>HelloWorld</servlet-name>
<servlet-class>HelloWorld</servlet-class>
</servlet>
</web-app>
Stop and start tomcat and try again.

Error 404: the request resource is not available

Hello,
I'm a newbie am using the Sun One (Forte 4.0 Community Edition) to develop a JSP/Servlet application.
I'm using the built-in version of Tomcat, that comes with forte. Tomcat has been installed in tyhe following directory:
C:\forte\forte4j\tomcat401
My application has the following path:
C:\forte\RDoku\tomcat401_base\webapps\designer
After reading the documentation that comes with this version of Forte, it seems that Tomcat can be configured to work this
way. Is that correct?
Anyway, when I start tomcat(within forte), the login page, login.jsp is loaded successfully. The action of the login
form is servlet/com.doku.login. My web.xml file looks like this:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>

<servlet>
<servlet-name>login</servlet-name>
<servlet-class>com.doku.login</servlet-class>
</servlet>
</web-app>
My problem is that when I submit the form, I get the following error:
Error 404, /servlet/com.doku.login, the request resource (/servlet/com.doku.login) is not available.
I would really appreciate it if anyone could help me in solving this mystery.
Regards,
Rudi

Hey Rudi
Everything seems to be in place ..except your package structure..
your webapp has the context of designer.
Therfore your directory structure for tomcat should look somewhat like this
webapps
--designer
web-inf < web.xml(i think)
classes <Place your class files here(if loose)
lib < jar files
1.) Somehow tomcat is creating another context in servlet (unless you have created one yourself).I would urge u to check the invocation for your webapp (By saying that i am pointing at the error /servlet/com.doku.login...instead of /designer/com.doku.login).
change the action of the form to
/designer/...instead of /servlet/
2.)Further..on examining your depoyment descriptor..i found missing entries for the <servlet-mapping> element.Tomcat uses your deployment descriptor to map the incoming requests to your classes.The element must be specified in order to allow a smooth mapping from the request to the corresponding servlet class.
Let me explain by using an example
a.)my form action="/designer/Hello" method="get"
b.)The directory structure for my webapp(designer ) is as above
c.)web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>

<servlet>
<servlet-name>Hello</servlet-name>
<servlet-class>package.HelloWorld</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Hello</servlet-name>
<url-pattern>/Hello</url-pattern>
</servlet-mapping>
</web-app>
so for all incoming requests in the form /servlet/Hello will be mapped to your class defined in the package package.HelloWorld
Let me know if u have more questions.

SERVLET NOT AVAILABLE

Hello,
I'am running an application builds with jsp and servlet.
My jsp files run well but when I call a servlet I found this error:
HTTP Status 404 - /Application/servlet/net.xnetwork.projet.controller.ControlIdentite
type Status report
message /Application/servlet/net.xetwork.projet.controller.ControlIdentite
description The requested resource (/Application/servlet/net.xetwork.projet.controller.ControlIdentite) is not available.
Apache Tomcat/4.1.12
Thanks you for your suggestions.
F.S.

In servlet.xml
I add this:
<Context path="/Application" docBase="C:\Application" debug="0" reloadable="false" crossContext="true">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="localhost_Application_log." suffix=".txt"
timestamp="true"/>
</Context>
In C:\Application I have this directories:
jsp
image
WEB-INF
classes
net
xetwork
projet
controller (for the servlet classes)
bean
user
impl
and the class I'am calling is in the controller directory.
Thanks.
F.S

Servlet "X" is not available

I have a simple application. I'm trying to follow the MVC Pattern.
I receive the following messages.
HTTP Status 404 - Servlet Bla is not available
type Status report
message Servlet Bla is not available
description The requested resource (Servlet Bla is not available) is not available.
Apache Tomcat/6.0.20or sometimes I receive
javax.servlet.ServletException: Wrapper cannot find servlet class pachet.DispatcherServlet or a class it depends on
SEVERE: Allocate exception for servlet Bla
java.lang.ClassNotFoundException: pachet.DispatcherServlet
20.09.2009 11:56:39 org.apache.catalina.core.StandardWrapperValve invokeweb.xml
   <servlet>
        <servlet-name>Bla</servlet-name>
        <servlet-class>pachet.DispatcherServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>Bla</servlet-name>
        <url-pattern>/dispatcher</url-pattern>
    </servlet-mapping>I'm using an IDE and if I would change, let's say the package name from the web.xml, it would warn me that the path is wrong, but in this moment, I don't receive any warning about anything.
Edited by: abcdriver on Sep 20, 2009 2:02 AM

The error message seems clear enough:
Wrapper cannot find servlet class pachet.DispatcherServlet or a class it depends onIs your class called DispatcherServlet in the package pachet? Double check the spelling - remember it is case sensitive.
Is that class deployed in your web application? WEB-INF/classes/pachet/DispatcherServlet.class?
What dependencies does your class have? What classes need to be present for it?
Are all of them available in the web application classpath?

Resource not available error in servlet

This is my directory structure C:\Program Files\Apache Software Foundation\Tomcat 4.1\webapps\VSG\WEB-INF and here i have in web-inf my web.xml which looks like this
<web-app>
<servlet servlet-name>Myservlet</servlet-name>
<servlet-class>Myservlet<servlet-class>
</servlet>
<servlet-mapping >
<servlet-name>Myservlet</servlet-name>
<url-pattern>/myservlet</url-pattern>
</servlet-mapping>
</web-app>
while my class file is at this position C:\Program Files\Apache Software Foundation\Tomcat 4.1\webapps\vsg\WEB-INF\classes
Now i run my servlet in browser as
http://localhost:8080/vsg/myservlet
it gives me error that resource is not available.... any idea on this ???

ganeshmb wrote:
Package-less classes are no longer supported .. .. when you use Tomcat 4.1 with Java 1.4 or newer due to a security bugfix. Since Tomcat 5.0 it is been "fixed" by an internal workaround.
Still, putting classes in a package is highly recommended. You can only access classes from another packages when you explicitly import it. As you cannot import from the default package, the classes in the default package remains unaccessible for classes in another packages (like the application server implementation classes).

Http Status 404, The Requested resource is not available

Dear Friends,
I am getting error with my tomcat that " The Requested resource is not available"
Kindly help me , What is the wrong with my code.
I am using Eclipse 6.0.1, Tomcat 5.5.20, jdk 1.5.0, j2sdk 1.4.0
My application is just to print user datas and my files are
*1. login.jsp*
<html>
<head>
<title>login Page </title>
</head>
<body>
<form action="login" method="post">
<table>
     <tr>
     <td>UserName</td><td><input type="text" name="username"/></td>
     </tr><tr>
     <td>Password</td><td><input type="password" name="password"/></td>
     </tr>
     <tr><td><input type="submit" value="login"/>
     </tr>
</table>
</form>
</body>
</html>
*2.web.xml*
<web-app>
<servlet>
     <servlet-name>login</servlet-name>
     <servlet-class>login</servlet-class>
</servlet>
<servlet-mapping>
     <servlet-name>login</servlet-name>
     <url-pattern>/login</url-pattern>
</servlet-mapping>
</web-app>
*3. login.java*
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class login extends HttpServlet
     public void doPost(HttpServletRequest req, HttpServletResponse res)
          try
          PrintWriter out = res.getWriter();
          String name = req.getParameter("username");
          String password = req.getParameter("password");
          out.println(name+" servlet page");
          }catch(Exception e)
          e.printStackTrace();
File Directory:
Myapp
! !-->src
! ! !--> login.java
! !-->WebRoot
! !--> META-INF
! !--> WEB-INF
! !--> Classes
! !--> login.class
! !--> lib
! !--> web.xml
-->login.jsp
CATALINA_HOME C:\Program Files\Apache Software Foundation\Tomcat 5.5
CLASSPATH C:\Program Files\Apache Software Foundation\Tomcat 5.5\common\lib\servlet-api.jar;C:\Program Files\Apache Software Foundation\Tomcat 5.5\common\lib\jsp-api.jar
path C:\Program Files\Java\jdk1.5.0_05\bin;C:\Program Files\Apache Software Foundation\Tomcat 5.5\bin;C:\j2sdk1.4.0\bin
Please anyone give me the solution to solve my problem.
Thank you

Try moving your class file to a package
<servlet-class>com.logon.login</servlet-class>
! !-->src
! ! !-->com
          ! !-->logon
                    ! !--> login.java

404 'the requested resource is not available'

Hi All,
We created a KM iview and accessing Flash file. Some users are able to see the iview without error. Some users are getting 404 'the requested resource is not available' Error. They are not able to see the flash file in portal.
Can anyone advise me what the problem is and resolution steps for this?
Thanks,
Srinivasu.Y

Hi Srinivasu,
Well you already have lots of valid suggestions above but this problem might be causing for various reasons. As you have already checked the permissions for the set of the users having this problem, it might be worth checking if there are many nodes of the server instance and if any of these are not working properly. It can happen that when those set of users are trying to access the resource, the request is hitting specific server nodes which is unable to find the resource for some reasons. You can try asking the users to clear their browser cache and try again so that when the users try to access the same resource again it might go to different node this time.
But probably this is a temporary solution that might work as has worked in my case but there might be problem with some server nodes which is worth looking at.
Hope it helps.
Regards,
Gourav

404 Servlet (servletName)not Available

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