Sevlet without specific mapping in web.xml

Hi,
          1. How to invoke a servlet without specfic mapping entry in the web.xml file, by compiling and placing the class file under WEB-INF/classes directory?
          2. Is it correct to mapping the servlets in the directory structure alone (not specific), Like
          <servlet-mapping>
          <servlet-name>/myservlets/*</servlet-name>
          <url-pattern>servlets/../myservlets/*</url-pattern>
          Where * - for servlets under myservlets package compiled and placed under WEB-INF classes and invoked from the browser as
          http://localhost:9999/servlets/../myservlets/testpackage.test

You can use servletservlet :
          web.xml:
          <web-app>
          <servlet>
          <servlet-name>ServletServlet</servlet-name>
          <servlet-class>weblogic.servlet.ServletServlet</servlet-class>
          </servlet>
          <servlet-mapping>
          <servlet-name>ServletServlet</servlet-name>
          <url-pattern>/servlets/*</url-pattern>
          </servlet-mapping>
          </web-app>
          and your servlet will be accessible as
          http://localhost:7001/yourWebApp/servlets/testpackage/test
          Chitrapandian <[email protected]> wrote:
          > Hi,
          > 1. How to invoke a servlet without specfic mapping entry in the web.xml file, by compiling and placing the class file under WEB-INF/classes directory?
          > 2. Is it correct to mapping the servlets in the directory structure alone (not specific), Like
          > <servlet-mapping>
          > <servlet-name>/myservlets/*</servlet-name>
          > <url-pattern>servlets/../myservlets/*</url-pattern>
          >
          > Where * - for servlets under myservlets package compiled and placed under WEB-INF classes and invoked from the browser as
          > http://localhost:9999/servlets/../myservlets/testpackage.test
          Dimitri

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Regular Expression Filter Mapping In Web.xml

I have a situation where I need to filter URL's that don't have a file extension. There are hundreds of URL's, so i can't specify each one separately.
From what I understand, you can have a filter mapping in web.xml to map certain file extensions to a filter, such as :
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No, regular expressions are not supported. You can specify the mapping with extensions, or with paths, not at the same time in the same mapping specification. However, you can specify two servlet mappings, one with extension, and one with path.
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Order of servlet mapping in web.xml

Hello,
is the order of multiple <servlet-mapping> in web.xml important? Or it doesn't matter in which order they are declared?
For example, if i have two controllers, one is
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and the second:
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And may second question is:
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Here is what the 2.4 specification says on the matter (section SRV.11.1):
>
The path used for mapping to a servlet is the request URL from the request
object minus the context path and the path parameters. The URL path mapping rules below are used in order. The first successful match is used with no further matches attempted:
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4. If neither of the previous three rules result in a servlet match, the container will attempt to serve content appropriate for the resource requested. If a "default" servlet is defined for the application, it will be used.
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It also notes that in prior versions of the specification these were only a suggestion so if you are on servlet 2.3 or prior, you need to consult the documentation for your container.
So, to answer your questions, no, order in the descriptor is not important.
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Is it possible to add a filter to a webapp without declaring it in web.xml

Hello,
I'd like to add a filter in my web.xml file, but without declaring it in my webapp.
Indeed, I have multiple webapps, and I'd like to have a common web.xml file that should be directly included in all the webapps including this package ?
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Thanks in advance.
bgOnline

Your title and your question are opposites...
A filter must be specified in a web.xml to be used. That doesn't mean the Filter's class HAS to be in your webapp, it just must be accessible to the Servlet container (you could place it in the common/classes directory or shared/classes directory or even the server/classes directory).
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HTH.

Servlet Filters not following filter mapping in web.xml

Hi Experts,
I have two Servlet filters SetCharacterEncodingFilter and LASBackOfficeAuthFilter which are mapped in such a way that SetCharacterEncodingFilter gets called before LASBackOfficeAuthFilter(This is done in web.xml using filter mapping).
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Any help on this would be very much appreciated .
Regards
Dinesh

No, regular expressions are not supported. You can specify the mapping with extensions, or with paths, not at the same time in the same mapping specification. However, you can specify two servlet mappings, one with extension, and one with path.
The exact wording from the spec (2.4) is as follows:
In the Web application deployment descriptor, the following syntax is used to define
mappings:
• A string beginning with a ‘/’ character and ending with a ‘/*’ suffix is used
for path mapping.
• A string beginning with a ‘*.’ prefix is used as an extension mapping.
• A string containing only the ’/’ character indicates the "default" servlet of
the application. In this case the servlet path is the request URI minus the context
path and the path info is null.
• All other strings are used for exact matches only.

What is Wrong with my filter and filter-mapping in web.xml?

First, thanks all for your attention.
I have checked the place where I should place <filter> and <filter-mapping> in web.xm. They should be after the <display-name>, before <servlet> and <servlet-mapping>.
However, as soon as I insert the <filter> and <filter-mapping> elements in my web.xml, all my struts-bean.tld, struts-html.tld, etc. in the web.xml cannot be found at the runtime.
Please help in identifying the problem. Thank you.
<filter>
   <filter-name>trailFilter</filter-name>
   <filter-class>org.osjava.taglib.trail.OriginalRequestFilter</filter-class>
</filter>
<filter-mapping>
   <filter-name>trailFilter</filter-name>
   <url-pattern>*.do</url-pattern>
</filter-mapping>and my web-xml is:
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>
<display-name>Struts Example Application</display-name>

<servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml, /WEB-INF/struts-config-registration.xml</param-value>
    </init-param>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
</servlet-mapping>

<welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<error-page>
   <exception-type>java.lang.Exception</exception-type>
   <location>\Error.jsp</location>
</error-page>

<taglib>
    <taglib-uri>/tags/app</taglib-uri>
    <taglib-location>/WEB-INF/app.tld</taglib-location>
</taglib>

<taglib>
    <taglib-uri>/tags/struts-bean</taglib-uri>
    <taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
</taglib>
<taglib>
    <taglib-uri>/tags/struts-html</taglib-uri>
    <taglib-location>/WEB-INF/struts-html.tld</taglib-location>
</taglib>
<taglib>
    <taglib-uri>/tags/struts-logic</taglib-uri>
    <taglib-location>/WEB-INF/struts-logic.tld</taglib-location>
</taglib>
<taglib>
    <taglib-uri>/tags/struts-nested</taglib-uri>
    <taglib-location>/WEB-INF/struts-nested.tld</taglib-location>
</taglib>
</web-app>

Filters were introduced in the servlet 2.3 specification (j2ee 1.3) - http://java.sun.com/products/servlet/Filters.html.
Your web.xml constraints your web application to adhere to 2.2 standards (according to your DOCTYPE definition in your web.xml). Change it to conform to 2.3 standards
<!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>
        //your definitions
</web-app>Note : Your container should support the 2.3 spec (Tomcat 4.0 and above does, I guess)
ram.

JSP Servlet Mapping in web.xml

Hi!
I have a JSP page by name "ContactUs.jsp" located in the folder <root>/jsp/info and I am using Tomcat Server. As I want to access this file using the URL "http://localhost:8080/<webapp>/ContactUs.jsp" instead of "http://localhost:8080/<webapp>/jsp/info/ContactUs.jsp". For this I added the follwing lines to web.xml file of my web app.
<servlet>
<servlet-name>org.apache.jsp.jsp.info.ContactUs_jsp</servlet-name>
<servlet-class>org.apache.jsp.jsp.info.ContactUs_jsp</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>org.apache.jsp.jsp.info.ContactUs_jsp</servlet-name>
<url-pattern>/ContactUs.jsp</url-pattern>
</servlet-mapping>
But I am getting the error saying that
"ClassNotFoundException: org.apache.jsp.jsp.info.ContactUs_jsp"
Is there any thing else to be modified? Please help me.
Thanks in advance
Geethanadh.K

I'm no expert on this but I have a hunch. 1st of all, your using a servlet mapping for a JSP. That's good and well but it seems that the container is complaining that there is no servlet named org.apache.jsp.jsp.info.ContactUs_jsp. In other words it looks like the JSP has not been compiled. At least not yet. Maybe try two things. Visit the JSP once with a browser at it's actual path "http://localhost:8080/<webapp>/jsp/info/ContactUs.jsp" the coerce a page compile. Then try it with your new mapped path. You see, just telling the container that there is a servlet mapped to the new URL doesn't force the container to generate the class. Something or someone must generate the servlet class file.
Honestly, I'm not sure of what your end goal is but maybe you might consider using a JSP pre-compiler? Or even better, register a servlet at the mapped path that fowards all requests into the desired folder.
Cliff

URL Mapping for packaged JSP's in web.xml file

          Hi,
          I am using weblogic6.0sp2 enterprise edition.I have my JSP's in package structure.
          Suppose my login.jsp is in package com.advice.document. So for URL mapping in
          web.xml what should be given so that by giving that my JSP runs. I have tried
          many options but not got success.
          Here is my web.xml file..
          <web-app>
          <servlet>
          <servlet-name> Login </servlet-name>
          <jsp-file> com\advice\document\login.jsp</jsp-file>
          </servlet>
          <servlet-mapping>
          <servlet-name> Login </servlet-name>
          <url-pattern> /Login</url-pattern>
          </servlet-mapping>
          </web-app>
          If any body knows or have worked on the same then let me know.
          Thanks in advance.
          --- Vipul


Did you try specifying the jsp-file with forward slashes (e.g.,
          com/advice/document/login.jsp)?
          Vipul Garg wrote:
          > Hi,
          > I am using weblogic6.0sp2 enterprise edition.I have my JSP's in package structure.
          > Suppose my login.jsp is in package com.advice.document. So for URL mapping in
          > web.xml what should be given so that by giving that my JSP runs. I have tried
          > many options but not got success.
          > Here is my web.xml file..
          > <web-app>
          > <servlet>
          > <servlet-name> Login </servlet-name>
          > <jsp-file> com\advice\document\login.jsp</jsp-file>
          > </servlet>
          > <servlet-mapping>
          > <servlet-name> Login </servlet-name>
          > <url-pattern> /Login</url-pattern>
          > </servlet-mapping>
          > </web-app>
          >
          > If any body knows or have worked on the same then let me know.
          > Thanks in advance.
          > --- Vipul

Do we need to put the following code in the web-xml for the project to run

Hi^^^,
actually I have created a project in Eclipse WTP and I am running it from remote server. Its giving me 404 error when I tried to run it.
I know 404 error is generally due to some error in deployment descriptor.
I am going through this tutorial for creating project in eclipse WTP
this says that I need to include the following code in web-xml. Please look at the quotes below
"Web modules in J2EE has a deployment descriptor where you configure the web application and its components. This deployment descriptors is called the web.xml. According to the J2EE specification, it must be located in the WEB-INF folder. web.xml must have definitions for the Servlet and the Servlet URI mapping. Enter the following lines into web.xml:"
"Listing 2. Deployment Descriptor web.xml"
<servlet>
<servlet-name>Snoop Servlet</servlet-name>
<servlet-class>org.eclipse.wtp.tutorial.SnoopServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Snoop Servlet</servlet-name>
<url-pattern>/snoop/*</url-pattern>
</servlet-mapping>
My question is, it is necessary to include the above lines between <servlet> and </servlet-mapping> in web-xml
thanks and regards,
Prashant

pksingh79 wrote:
actually I have created a project in Eclipse WTP and I am running it from remote server. Its giving me 404 error when I tried to run it.
I know 404 error is generally due to some error in deployment descriptor. what's the url you've put.
<servlet>
<servlet-name>Snoop Servlet</servlet-name>
<servlet-class>org.eclipse.wtp.tutorial.SnoopServlet</servlet-class>
</servlet> Every Servlet has to have a <servlet></Servlet> tag in the web.xml
the <servlet-name>is for the naming the servlet and the <servlet-calss>is for class file of the servlet in your case the .class file is to be in the package of tutorial,if it's not then how the container will no where the calss file is
<servlet-mapping>
<servlet-name>Snoop Servlet</servlet-name>
<url-pattern>/snoop/*</url-pattern>
</servlet-mapping>You type something in your url likk http://localhost:8080/webappname (Tomcat server),so for url mapping instead of typing the entire class file name ,you just enough have to type what you've put in the <url-mapping> tag and it has to be inside of <servlet-mapping>
I think the problem is in <url-pattern> change it like /snoop<url-pattern>
My question is, it is necessary to include the above lines between <servlet> and ></servlet->mapping> in web.xmlSo now you think whether you need something inside <servlet>and </servlet-mapping>

Do I must put ALL my servlets inside the web.xml file?

Hello everybody,
I am trying to migrate from Webshere to TOMCAT a project with severals packets, one of those have 15 servlets and some classes.
Is there any way to use the servlets without have to declare each one inside the web.xlm file ?
Thanks in advance.

All servlet definitions go into web.xml, though not the actual servlets themselves :) . Say if you wanted servlet A to have a different mapping you would define the mapping in web.xml to something other than the standard one.

Taglib tag doesn't work with web.xml 2.4 ?

That is, I switched to the 2.4 version of web.xml and now none of the taglib elements I have in there work.
I get the following excpetion
org.apache.jasper.JasperException: File "/tags/struts-html" not found
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.jav a:105)
I've been surfing a good portion of the day looking for some documentation on this but to no avail. I did find that I should wrap the taglib elements in a jsp-info. I'm runing tomcat 5.0.19.
In any event here is my web.xml:
<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 web-app_2_4.xsd"
version="2.4">
<display-name>Struts Examples Application</display-name>

<servlet>
<servlet-name>InitServlet</servlet-name>
<servlet-class>com.jacent.admin.servlet.init.InitServlet</servlet-clas s>
<init-param>
<param-name>log4j</param-name>
<param-value>/WEB-INF/log4j.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.action.ActionServlet</servlet-class&g t;
<init-param>
<param-name>config</param-name>
<param-value>/WEB-INF/struts-config.xml</param-value>
</init-param>

<init-param>
<param-name>debug</param-name>
<param-value>2</param-value>
</init-param>
<init-param>
<param-name>detail</param-name>
<param-value>2</param-value>
</init-param>
<load-on-startup>2</load-on-startup>
</servlet>

<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<jsp-config>
<taglib>
<taglib-uri>/tags/struts-bean</taglib-uri>
<taglib-location>/WEB-INF/struts-bean.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/struts-html</taglib-uri>
<taglib-location>/WEB-INF/struts-html.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/struts-logic</taglib-uri>
<taglib-location>/WEB-INF/struts-logic.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/struts-nested</taglib-uri>
<taglib-location>/WEB-INF/struts-nested.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/struts-tiles</taglib-uri>
<taglib-location>/WEB-INF/struts-tiles.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/datetime</taglib-uri>
<taglib-location>/WEB-INF/datetime.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/tabs-taglib</taglib-uri>
<taglib-location>/WEB-INF/tabs-taglib.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>/tags/admin-widgets</taglib-uri>
<taglib-location>/WEB-INF/admin-widgets.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>http://java.sun.com/jsp/jstl/core</taglib-uri>
<taglib-location>http://java.sun.com/jsp/jstl/core</taglib-location> ;
</taglib>
</jsp-config>
</web-app>
In addition Eclipse is complaining about web-app element not able to be found.
Thanks for anyone's help!
John

#1 programmers excuse: It works for me. You must be doing something wrong.
Finding out what is the trick.
I have Tomcat 5.0.28, but I don't think it would make THAT much difference.
What version of Java are you running?
You shouldn't need the entry for the JSTL library c. That works without an entry in web.xml, provided you use the correct URI.
First step: make a test page that only uses that one taglib - eg an html:base tag.
Confirm that it breaks with the current setup.
Backup web.xml, and start it from scratch with an absolute minimal one - only import the struts-html library.
Does that work?
Slowly copy and paste in the different bits of web.xml until you find what breaks it.
Hope this helps,
evnafets

When to specify taglib uri in web.xml

When declaring a URI in the taglib directive, when must you include the taglib elements in web.xml, and when can you avoid them?
I tried putting a relative path to the .tld file, setting uri to �/WEB-INF/mysubfolder/myfile.tld�, but my web server complains that I�m missing a tlib-version element somewhere�
What is the uri path relative to, and in what cases must you include a mapping in web.xml and when do you not have to?
Thanks.

So it sounds like your tld file has some invalid xml in it.
Double check the contents of your tld file.
If you declare a <uri> in your taglibrary, then you never need to declare it in web.xml.
You can just use that "well-known" uri to access your tag library.
The tld has to be either
1 - in the META-INF folder of a jar file deployed
2 - under the WEB-INF directory
See JSP specification section JSP.7.3.1

Question about web.xml

So in my web.xml file (for Tomcat 5.5) I used to map a servlet like this:
<servlet-mapping>
<servlet-name>
ServletName
</servlet-name>
<url-pattern>
/servlet/ServletName
</url-pattern>
</servlet-mapping>and it wouldn't work. Now when I map it like this:
<servlet-mapping>
<servlet-name>
ServletName
</servlet-name>
<url-pattern>
/servlet/*
</url-pattern>
</servlet-mapping>it works just fine. Can anyone explain to me why this is since I've seen web.xml files that don't use the /* for the dir. location?
Thanks in advance.

I posted this too soon. Using that 'wild card' it grabs the last servlet mapped in web.xml. So I commented everything out and left the file with the following(I used '*' just to keep stuff private):
<?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>DISPLAY NAME</display-name>
    <description>
     DISPLAY NAME
    </description>
   <servlet>
<servlet-name>SignIn</servlet-name>
    <servlet-class>lmt.SignIn</servlet-class>
<init-param>
      <param-name>url</param-name>
      <param-value>jdbc:mysql://localhost/********</param-value>
    </init-param>
    <init-param>
      <param-name>**********</param-name>
      <param-value>*******</param-value>
    </init-param>
    <init-param>
      <param-name>********</param-name>
      <param-value>***********</param-value>
    </init-param>
</servlet>
<servlet-mapping>
<servlet-name>
SignIn
</servlet-name>
<url-pattern>
/servlet/SignIn
</url-pattern>
</servlet-mapping>
</web-app>This is will not locate the servlet.
I get a 404 with this message: "type Status report
message /servlet/SignIn/
description The requested resource (/servlet/SignIn/) is not available.
I really have no idea what's wrong here. Is there a problem with some configuration elsewhere? Thanks again.

Missing sun-web.xml

Starting yesterday, when I export a war file for my project, the sun-web.xml file is missing from the exported war file. I need to manually pack the sun-web.xml file into the war file before deploy it to the App server. Any idea why this is happening and how to avoid it?

Hi
The reason behind missing sun-web.xml when you "Export War" is to create a war file that should be portable across different containers.
If it includes container specific DD (sun-web.xml for ex. AS8 PE) when you "Export War" then it causes problems when you deploy this war file to a different container (for ex S1WS 6.x ) which uses the same name for its DD but with different contents.
Hope this explains why sun-web.xml was not included in war file.
Thanks
Srinivas
Creator Support

Sevlet without specific mapping in web.xml

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