having error in jsp with dbcp

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JSP

Hi,
i am facing problme in connecting database throuth connection pooling.
giving error "unable to open connection"
i giving my web.xml file and context.xml file.i am using tomecat
web server.

the stack trace is:-

org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.createDataSource(BasicDataSource.java:1136)
at org.apache.tomcat.dbcp.dbcp.BasicDataSource.getConnection(BasicDataSource.java:880)
at com.lyricnote.support.model.WebModel.connect(WebModel.java:46)



context.xml

<Context>

    <!-- Default set of monitored resources -->
    <WatchedResource>WEB-INF/web.xml</WatchedResource>
	
    <!-- Uncomment this to disable session persistence across Tomcat restarts -->
    <!--
    <Manager pathname="" />
    -->

    <!-- Uncomment this to enable Comet connection tacking (provides events
         on session expiration as well as webapp lifecycle) -->
    <!--
    <Valve className="org.apache.catalina.valves.CometConnectionManagerValve" />
    -->
	<Resource name="jdbc/LyricNote" auth="Container" type="javax.sql.DataSource"
               maxActive="100" maxIdle="30" maxWait="10000"
               username="prabhat" password="prabhat" driverClassName="com.mysql.jdbc.Driver"
               url="jdbc:mysql://localhost:3309/support"/>



</Context>

web.xml
--------------

<?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 web-app_2_4.xsd"
         version="2.4">

   <display-name>
      Chapter 19 of JSP 2.0 - The Complete Reference
   </display-name>

   <servlet>
      <servlet-name>controller</servlet-name>
      <servlet-class>
         com.lyricnote.support.controller.ControllerServlet
      </servlet-class>
   </servlet>

   <servlet-mapping>
      <servlet-name>controller</servlet-name>
      <url-pattern>/servlet/controller/*</url-pattern>
   </servlet-mapping>

   <resource-ref>
      <description>Product support database</description>
      <res-ref-name>jdbc/LyricNote</res-ref-name>
      <res-type>javax.sql.DataSource</res-type>
      <res-auth>Container</res-auth>
   </resource-ref>

</web-app>