Jdbc mysql using JNDI- org.apache.tomcat.dbcp.dbcp.SQLNestedException:

Question

Hi
I am new to JNDI and i want to set up database connection using JNDI.
I read the documentation at tomcat site and accordingly.
Presently i m using-
Tomcat 5.5
MySQL 5.0.6
this is my context.xml file under
* $CATALINA_HOME/webapps/mywebsite/META-INF/web*
    <?xml version="1.0" encoding="UTF-8"?>
<Context path="/myweb" docBase="myweb"
        debug="5" reloadable="true" crossContext="true">
  <Resource name="jdbc/myjndi" auth="Container" type="javax.sql.DataSource"
               maxActive="100" maxIdle="30" maxWait="10000"
               username="abc" password="abc" driverClassName="com.mysql.jdbc.Driver"
               url="jdbc:mysql://localhost:3306/mydb"/>
</Context>and this is my partial web.xml file under
*$CATALINA_HOME/webapps/mywebsite/WEB-INF*
  <?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" 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">
  <description>MySQL Test App</description>
      <resource-ref>
          <description>DB Connection</description>
          <res-ref-name>jdbc/myjndi</res-ref-name>
          <res-type>javax.sql.DataSource</res-type>
          <res-auth>Container</res-auth>
       </resource-refI downloaded the mysql J/Connecter from mysql website and put it in the
*$CATALINA_HOME/webapps/mywebsite/WEB-INF/lib*
My sample jsp code to test the connectvity is
<%!
   Connection conn=null;
   DataSource ds=null;
   Context ctx=null;
   Context envctx=null;
%>
<%
    ctx=new InitialContext();
    try{
            envctx=(Context)ctx.lookup("java:comp/env");
            ds=(DataSource)envctx.lookup("jdbc/myjndi");
            if(ds==null){
                   out.println("not found");
            else{
                out.println("found");
             conn=ds.getConnection();
             //Class.forName("com.mysql.jdbc.Driver");
             //conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/my","root","password");
            if(conn==null){
                 out.println("driver not found");
            else
                out.println("driver class found");
       } catch(Exception e){
            out.println("Exception : "+e);
       Exception is coming when i run this page
found Exception : org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot load JDBC driver class 'com.mysql.jdbc.Driver'
Can you please tell me why this exception is coming.... i searched everywhere and tried all the things but could not get out of that
Thanks in advance

Answer 1

Thanks for the reply.......
I put the mysql driver jar file to directory class path
CLASSPATH=C:\Program Files\Apache Software Foundation\Tomcat 5.5\common\lib\mysql_driver.jar
in my environment variables and also restarted the server but still same
exception is coming. If i run simply using
Class.forName("com.mysql.jdbc.Driver")
then the exception is not coming...
Thanks