Web.xml & Tomcat

hi
I have got tomcat5.0 running and am having trouble mapping my servlet so that it will run with the browser. Please tell me where I am going wrong. Java servlet test.HelloServlet compiles OK I have place the HelloServlet.class file in the following directory
../webapps/Trial/WEB-INF/classes/test/HelloServlet.class
web.xml is placed in the /WEB-INF/ directory
Here is a copy of my web.xml file
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"
version="2.4">
<display-name>Welcome to Tomcat</display-name>
<description>
Welcome to Tomcat
</description>

<servlet>
<servlet-name>HelloServlet</servlet-name>
<servlet-class>test.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>/HelloServlet</url-pattern>
</servlet-mapping>

</web-app>
I have been trying to access the HelloServlet class by typing in localhost:8080/HelloServlet
Could someone please tell me where I am going wrong
Thank you

Should be localhost:8080/trial/HelloServlet, you are forgetting the name of your web application in the url.

Similar Messages

Running servlets not described in web.xml (tomcat-4.1.24)

Is it compulsory to have a entry in the web.xml to run a servlet in tomcat-4.x. In tomcat 3.x it was not required. If it is not a must how to enable that??
thanx in advance
Binny

i had completly forgotten i could just place a servlet in the web-inf/classes. after using jsp for so long, some things just get lost.
what im wondering now is if i can have other directories inside the classes directory and still be called while not being registered in the deployment descriptor ? in otherwords, lets say i have several servlets organized into packages. can i call a servlet thats in a particular package if i fully qualify the class ? guess ill have to try

Web.xml Tomcat 5.0 Servlet problem

Hey guys....
The last time I used a servlet was before the new change in security in Tomcat. Ive been looking all over the net for some easy references about how they are to be mapped but no matter what I try nothing seems to work.
My servlet is located in ROOT\Admin\WEB-INF\classes\colt and is called AddOLO.class
My web.xml file is located in ROOT\Admin\WEB-INF and contains the following code:
<servlet>
<servlet-name>AddOLO</servlet-name>
<servlet-class>colt.AddOLO</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>AddOLO</servlet-name>
<url-pattern>/Admin/add</url-pattern>
</servlet-mapping>
On the HTML form invoking the Servlet (addOLO.html) Im using the following small piece of code
<form action="http://Colt/Admin/servlet/AddOLO" method="post" align="centre">
The server is operating on Port 80.
All I seem to be getting is a 404 Error Saying The requested resource (/Admin/servlet/AddOLO) is not available. Can anyone see what is wrong here?
Thanks in advance

I don't think there's anything to prohibit you from deploying servlets in ROOT, but webapps that have pages and servlets that work together should be in their own context. That's what you did when you created the directory under webapps. I think it's the right way to deploy web apps. Even better, learn how to create and deploy WAR files:
http://access1.sun.com/techarticles/simple.WAR.html
Once you have a WAR, which is simply a JAR'd version of the directory you just created under webapps, you can simply pick it up and deploy it by dropping it into the webapps directory of any Tomcat server. Tomcat will unpack it for you. - MOD

Web.xml - Tomcat vs iPlanet

I have a web application which was written using Forte with its built-in Tomcat engine. The application works fine in this environment.
I created a war file and put the application on our iPlanet server using wdeploy. I can open a JSP in the document root, but all of the servlets give the error "HTTP 404 - File not found".
Is there a difference in how the servlets must be referenced in the web.xml file for iPlanet vs Tomcat???

Weblogic7.0 requires that servlets be mapped to a
url:
<servlet-mapping>
<servlet-name>KioskServlet</servlet-name>
<url-pattern>/DriverKiosk.html</url-pattern>
</servlet-mapping>
I don't know specifically about websphere but I
suspect that may be the problem.The servlet was mapped to a URL.
The problem was that Forte did not require a leading slash, while iPlanet did require the slash:
Forte:
<url-pattern>myServlet</url-pattern>
iPlanet:
<url-pattern>/myServlet</url-pattern>

Tomcat web.xml "display-name" using flex.messaging.MessageBrokerServlet

       Hello,
When my web application starts with the BlazeDS servlet flex.messaging.MessageBrokerServlet defined in the web.xml we have an error because in the display-name defined at top level in web.xml we have some text containing character ':'. The error is traced to inside the function
         flex.management.BaseControl.getObjectName()
Which gets the object name, and this function calls
   BaseControl.getApplicationId()
which finally calls
ServletConfig.getServletContext().getServletContextName()
This will return or display-name from the web.xml with all it's text. This text contains among other characters the character ':'. We use this tag for the display in the Tomcat Manager to see version number and other of deployed project.
After retrieving this name it is appended in the getObjectName() function to a buffer, this StringBuffer that already contains flex.runtime. and now this name is appended (still with all that we are using for Tomcat Manager with ':' character and other). After the name, other things are appended. Our problem is that, after constructing this StringBuffer an instance of javax.management.ObjectName is created. In it's constructor it takes a String name as input. This String is parsed in base of characters ':', '*', '?', '\n' and so on, and since we have some of these characters in our display-name it all goes wrong.
   My question is, if this is a bug, a limitation or if it is documented that using flex.messaging.MessageBrokerServlet we can not use certain characters in the display-name of the web.xml?
   Greetings, Tim
   We are using
Tomcat 5.5.23
Jdk 1.5.0_14
blazeds-src-4.0.1.17657
part of web.xml
     <display-name>
         Version: 1.10.0.3 (01/02/2011), Environment development, AGP: 10.220.6.8:1557/AGPSVI, AGP_STAGE: host 10.220.6.8:1557/AGPSVI
     </display-name>
     <description>IMPRESA progetto con undergroung</description>
     <listener>
         <listener-class>flex.messaging.HttpFlexSession</listener-class>
     </listener>
     <servlet>
         <servlet-name>MessageBrokerServlet</servlet-name>
         <display-name>MessageBrokerServlet</display-name>
         <servlet-class>flex.messaging.MessageBrokerServlet</servlet-class>
         <init-param>
             <param-name>services.configuration.file</param-name>
             <param-value>/WEB-INF/flex/services-config.xml</param-value>
        </init-param>
         <load-on-startup>1</load-on-startup>
     </servlet>

I have found that this is a bug and there is an issue open at the "Adobe Bug and Issue Management System", BLZ-617. I don't know if work is in progress, but when that issue is closed the problem will be solved.
Greetings, Tim

Init-params in web.xml are not loaded (Tomcat 4)

Hello all...
I register a servlet in webapps/<my-servlet>/WEB-INF/web.xml file, and pass 1 <init-param> tag. The file gets parsed (I know because when I made errors tomcat complained during initialization). However, when in the init method of the servlet I try to access this parameter, its not there. In fact, the servlet has NO init params at all.
=================================================
I have the following web.xml file
<?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>XServlet</servlet-name>
<servlet-class>com.fxcm.xml.xengine.xdas.XServlet</servlet-class>
<init-param>
<param-name>xengine.configFile</param-name>
<param-value>c:/projects/re/das.config/config.xng</param-value>
</init-param>
</servlet>
<servlet-mapping>
     <servlet-name>XServlet</servlet-name>
     <url-pattern>/xservlet</url-pattern>
</servlet-mapping>
</web-app>
=======================================================
I have the following servlet
* XServlet.java
* Created on May 6, 2002, 1:17 PM
package com.fxcm.xml.xengine.xdas;
import javax.servlet.*;
import javax.servlet.http.HttpServlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.ServletConfig;
import java.util.Enumeration;
import com.fxcm.xml.xengine.XEngine;
public class XServlet extends HttpServlet{
/** Initiates new XServlet */
public void init(ServletConfig config)
throws ServletException
          for (Enumeration e = config.getInitParameterNames(); e.hasMoreElements();){
//This statement never gets printed because the loop never enters here since there are no init parameters
               System.out.println(e.nextElement());
super.init(config);
String str = config.getInitParameter("xengine.configFile");
System.out.println(str);
XEngine.init(str.trim()); //This line throws NullPointer, because str is null since there are no initParameters.
public void doPost(HttpServletRequest req, HttpServletResponse res)
throws ServletException, IOException{
// res.setContentType( );
          System.out.println("Got post request in XServlet");
PrintWriter out = res.getWriter();
out.println(XEngine.process(req.getInputStream()));
out.flush();
out.close();
================================================================
I get the follwoing error in the browser:
type Exception report
message Internal Server Error
description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.
exception
java.lang.NullPointerException
     at com.fxcm.xml.xengine.xdas.XServlet.init(Unknown Source)
     at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:918)
     at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:655)
     at org.apache.catalina.servlets.InvokerServlet.serveRequest(InvokerServlet.java:400)
Please help.
Thank you,
Elana

I know what the problem is. If you call servlet with the default URL (http://host/app/servlet/package.Servlet) than Servlet DOES NOT read init parameters. I don't know why it was designed this way.
To make servlet read init parameters, you have to assign it a name and then call it with that name, like this:
<servlet>
<servlet-name>ServletName</servlet-name>
<servlet-class>package.ServletClass</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ServletName</servlet-name>
<url-pattern>/app/path/ServletName</url-pattern>
</servlet-mapping>
You can then call servlet using path specified in url-pattern and read init parameters in the normal way.

Security in my web.xml in Tomcat 4

Hello,
I was using this application on Tomcat 3 and my web.xml worked perfectly well.
However when I tried to start it on Tomcat 4 there is something wrong with the
security part of my web.xml . If I leave out the security constraint for this application, it
works. However if I make my application secure I am unable to view it in the browser.
It does not try to connect to the login.jsp page for log in , but simply displays the message that the page is unavailable and that I have to refresh my browser. Please help me with that because I am stuck.
Here is my 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>UploadServlet</servlet-name>
<servlet-class>UploadServlet</servlet-class>
<init-param>
<param-name>SaveDirectory</param-name>
<param-value>C:\Homeworks\</param-value>
</init-param>
<init-param>
<param-name>Proffesors</param-name>
<param-value>Clayton,Douglass,Guruvado</param-value>
</init-param>
</servlet>
<security-constraint>
<display-name>Protected Homework Upload</display-name>
<web-resource-collection>
<web-resource-name>Protected Area</web-resource-name>
     

     <url-pattern>/servlet/UploadServlet</url-pattern>
     
     <http-method>DELETE</http-method>
<http-method>GET</http-method>
<http-method>POST</http-method>
     <http-method>PUT</http-method>
</web-resource-collection>
<auth-constraint>

<role-name>student</role-name>
<role-name>proffesor</role-name>
</auth-constraint>
</security-constraint>
<login-config>
<auth-method>FORM</auth-method>
<realm-name>Example Form-Based Authentication Area</realm-name>
<form-login-config>
<form-login-page>/login.jsp</form-login-page>
<form-error-page>/error.jsp</form-error-page>
</form-login-config>
</login-config>
</web-app>
Thank you very much for your time and advise. I appreciate it very much
Martin

hi,slice
I donot really find exactly what is wrong in your config file. But I have some suggestions:
1.Please use servlet URL mapping in "servlet" tag (for example: "/security/upload") instead of using default servlet URL(just like "/servlet/UploadServlet").
2. In the "url-pattern" tag inside "web-resource-name" ,please using "/security/*", if you are using my suggestion above.
3.Make sure that your "login.jsp" page is in the right place of the application's doc-root.
Make a try and good luck!
Wang Yu
Developer Technical Support
Sun Microsystems
http://sun.com/developers/support

Configure web.xml in tomcat for sub class folders

Hi Guys,
I am using a tomcat server. I have a package file and have created a dir in webapps called "testApp". In the classes folder, I have another folder called "CheckServlets" and within this I have 2 servlets. How can I configure my web.xml properties to get the servlets to load in a browser. I have tried the following but it doesnt work:
<servlet>
<servlet-name>test</servlet-name>
<servlet-class>/CheckServlets/HelloServlet/</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>test</servlet-name>
<url-pattern>/hello/test/</url-pattern>
</servlet-mapping>
So I try http://localhost:8080/testApp/hello/test but that doesnt work.

I presume your servlet is in a package called CheckServlets?
ie it starts something like
package CheckServlets
public class HelloServlet extends HttpServlet {
}Remove the / signs from the servlet-class. This attribute should be a fully qualified class name. Like java.lang.String, or com.mypackage.servlet.MyServlet
Given the above servlet in a package, it should be
<servlet>
<servlet-name>test</servlet-name>
<servlet-class>CheckServlets.HelloServlet</servlet-class>
</servlet>Cheers,
evnafets

Tomcat 404 error until I apply this change to my web.xml mapping

What is the purpose of the /servlet/ portion of the url-pattern in the servlet mapping element below.
If I use the first few lines I get a 404 class not found error
If I include /servlet/ in the url-pattern element then my app works fine ?????
//Does not work
<servlet-mapping>
<servlet-name>login</servlet-name>
<url-pattern>com.onjava.login</url-pattern>
</servlet-mapping>
//works !!
<servlet-mapping>
<servlet-name>login</servlet-name>
<url-pattern>/servlet/com.onjava.login</url-pattern>
</servlet-mapping>

If the first mapping doesn't work and the second mapping works then my guess is that neither mapping is working. What may be happening is the invoker servlet may be enabled and that would explain why the /servlet url works.
The invoker servlet is set up in the conf/web.xml file. This servlet will invoke a particular servlet using the class name and the /servlet url. In newer versions of tomcat the invoker servlet id disabled by default.
Now the question is why does the servlet mapping not work? What version of tomcat are you running? Can you post the entire web.xml?

Automate creation of web.xml file for tomcat 4.1.29

hi , this is with ref to Tomcat 4.1.29, if i am correct, each Servlet in the application has to be mentioned in the web.xml file for the Tomcat to know about it. Is there any way to automate the creation of web.xml file , depending on the contents of the Servlet folder of the application. Any way to escape from writing each Servlet name in web.xml file.
rc

Hello,
Maybe you should check if you can use Ant tool to do
that. I am not sure if it can help u.
Zeph.
http://ant.apache.org/
It will, specially if used in conjunction with XDoclets :
http://xdoclet.sourceforge.net/
XDoclet has Ant tasks to generate web.xml files.

Reload web-inf/web.xml file without restarting tomcat

Please help me if any one have a solution .
I am doing development in jsp, servlet. I am using tomcat5 as a webserver.
i want to reload web-inf/web.xml file without restarting tomcat.

From the tomcat admin page you can stop/start and refresh individual applications. See the tomcat documentation. Which, when you have a question about tomcat, you should always do first.

Security constraint in Web.xml of tomcat

Hi
I have a web-application running on tomcat . Inside the context folder i have several directories having some pre-defined configuration files . But the user is able to directly access them by typing the path including the fileName in the URL ( I have disabled the listings property however)
How can i prevent accessing the specific files .... I tried using
<security-constraint>
<display-name>Security constarint</display-name>
<web-resource-collection>
<web-resource-name>Java Application</web-resource-name>
<url-pattern>/folder/*</url-pattern>
<auth-constraint>
<role-name>tomcat</role-name>
</auth-constraint>
</web-resource-collection>
<auth-constraint>
<role-name>tomcat</role-name>
</auth-constraint>
</security-constraint>
<login-config>
<auth-method>BASIC</auth-method>
<realm-name>OnJava Application</realm-name>
</login-config>
This seems to be working fine , but when the user enters the wrong security info thrice , 401 error page is coming instead i want my custom page . Hence i configured an error page for 401 code which overwrited the earlier behavaiour ie.. that BASIC authentication popup is not coming
Can any one let me know how to go about this

Hi ,
I have tried adding the following into web.xml but the security feature just doesnt work and the user can go to any page without any restriction.
<security-constraint>
<web-resource-collection>
<web-resource-name>Declarative Security Test</web-resource-name>
<url-pattern>/SuperServlet</url-pattern>
<url-pattern>/*</url-pattern>
<http-method>post</http-method>
<http-method>get</http-method>
</web-resource-collection>
<user-data-constraint>
<transport-guarantee>CONFIDENTIAL</transport-guarantee>
</user-data-constraint>
<auth-constraint>
<role-name>guest</role-name>
<role-name>member</role-name>
</auth-constraint>
</security-constraint>
<login-config>
<auth-method>BASIC</auth-method>
</login-config>
<security-role>
<role-name>guest</role-name>
<role-name>member</role-name>
</security-role>
The roles mentioned above have been added correctly into tomcat-users.xml..The version of tomcat I am using is tomcat5.0.28.Please help.

Where is the web.xml file in Tomcat 5.5

hi folks,
i made a small appl in Tomcat 5.5 named "Name". I made a WEB-INF folder inside the Name folder (which obv is inside the webapps folder), which inside had the classes and lib folder. After running the application where do i look for the web.xml file controlling my appl?
thanx in advance..

well, the web.xml file must be done for you. Its specific to your project, you wont find in on other folders of tomcat.

Web.xml problem in tomcat web hosting site

Hi i need help in this... its urgent
currently i just subscribe to a web hosting site and i need to start the private tomcat in the web server..
The followings are the instructions and i have follow them but i do not know how to create a web.xml file to store in the folder indicated for example a HelloServlet that im testing :
To setup servlet, you need to configure servlet into the file web.xml which needs to be placed in /var/www/html/WEB-INF directory.
www root directory or webapps:/var/www/htm
Classes directory located in: /var/www/html/WEB-INF/Classes/
There you will need to upload your Java class file.
Our default url-mapping for servlet is: /servlet/*
To check servlet in your browser: www.mydomain.net/servlet/HelloWorld
Jsp Files - Upload anywhere in /var/www/html
all the above steps are follow except the web.xml file which i suppose to write and store in the folder... but i actually try to write one but i still cannot load my servlet on the webpage... test on standalone tomcat works.
pls help its urgent!!!

Please don't cross post
http://forum.java.sun.com/thread.jsp?thread=500509&forum=45&message=2366915

Tomcat 4.0.6 web.xml

Hi,
I have a tomcat 4.0.6 server running on a production environment. My web.xml doesn't seem to be working fine with that. Can any one give me a sample web.xml thats accepted by 4.0.6 tomcat server? However my web.xml is as under.
<?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>Web Project</display-name>
<description>
     WebProject Description
</description>
    
    <filter/>
    <filter-mapping/>
    <listener/>
    <servlet>
        <servlet-name>SendMailServlet</servlet-name>
        <servlet-class>SendMailServlet</servlet-class>
    </servlet>
    <servlet-mapping>
        <servlet-name>SendMailServlet</servlet-name>
        <url-pattern>/SendMailServlet</url-pattern>
    </servlet-mapping>
    <taglib>
        <taglib-uri/>
        <taglib-location/>
    </taglib>
    <resource-ref/>
    <security-constraint/>
    
    <login-config/>
    <env-entry>
      <env-entry-name/>
      <env-entry-value/>
      <env-entry-type/>
    </env-entry>
    
    <ejb-ref>
      <description/>
      <ejb-ref-name/>
      <ejb-ref-type/>
      <home/>
      <remote/>
    </ejb-ref>
    
    <ejb-local-ref>
      <description/>
      <ejb-ref-name/>
      <ejb-ref-type/>
      <local-home/>
      <local/>
    </ejb-local-ref>
</web-app>

in the conf directory of your Tomcat installation you will find the default web.xml file. You can copy this file to you web application and use as the basis of a new web.xml.

Web.xml & Tomcat

Similar Messages

Maybe you are looking for