404 Exception

[Suhani arora]

Hi to All.....
Frnds I am creating WEB application in which i am using JSP,Servlet,Bean-Class. I have developed it in Tomcat 4.1.10 but due to some reason it is corrupt and now i have installed Tomcat 4.1.31 .After installed i am facing new problem my servlet is not called .It shows 404 Exception servlet not found .any one please tell me why is this happening .I have checked the spelling and Servlet there is not problem.

My WEB.XML is
---------------------------------------------------------------------
<?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>loginServlet</servlet-class>
<servlet-mapping>
<servlet-name>login</servlet-name>
<url-pattern>servlet/*</url-pattern>
</servlet-mapping>
</servlet>

<security-constraint>
<display-name>Security Constraint</display-name>
<web-resource-collection>
<web-resource-name>USER</web-resource-name>
<url-pattern>/*</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>usr</role-name>
<role-name>adm</role-name>
</auth-constraint>

<user-data-constraint><transport-guarantee>NONE</transport-guarantee></user-data-constraint>
</security-constraint>

<login-config>
<auth-method>FORM</auth-method>
<realm-name>Form-Based Authentication</realm-name>
<form-login-config>
<form-login-page>/index.jsp</form-login-page>
<form-error-page>/Error.jsp</form-error-page>
</form-login-config>
</login-config>

<security-role>
<description>Administrator </description>
<role-name>adm</role-name>
</security-role>

<resource-ref>
<description>Connection</description>
<res-ref-name>jdbc/connection</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>

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

</web-app>
--------------------------------------------------------------------

[Chetan Parekh]

Post some the error message that you are getting.

[kirtikumar patel]

hi!
specify complete path in servlet-class tag in web.xml
and also check url is also written down correcly or not?

if then after u also have same error plz send me ([email protected]) your class file with web.xm and url those you wirte for access that page in browser

[Suhani arora]

I got the Solution Actually there is need to write each servlet and their URL mapping in web.xml and the way is that

<servlet>
<servlet-name>Login</servlet-name>
<servlet-class>User_Entry</servlet-class>
</servlet>

<servlet-mapping>
<servlet-name>Login</servlet-name>
<url-pattern>/servlet/Login</url-pattern>
</servlet-mapping>