I have a problem in my web application to get DB connection from DataSource when I run project in JBuilder.
See Sections "0 - 4" in below and help me Please !!!!

IDE : JBuilder 2005
DBMS: MySql 3.23.45
Wb Server : tomcat 5.0.27

1.my server8080.xml (server.xml) is incloded these lines :

<Context debug="0" docBase="someAddress" path="/WebModule1" reloadable="true" workDir="someAddress">
          <Resourse name="jdbc/HOMEACCOUNT_DBX" type="javax.sql.DataSource" auth="Container"/>
          <ResourseParams name="jdbc/HOMEACCOUNT_DBX">
            <parameter>
              <name>driverClassName</name>
              <value>com.mysql.jdbc.Driver</value>
            </parameter>
            <parameter>
              <name>url</name>
              <value>jdbc:mysql://localhost:3306/HomeAccount_DB</value>
            </parameter>
          </ResourseParams>
        </Context>

2. my web.xml file inclode this lines :

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

3. my code is :

Context ctx = new InitialContext();
datasource = (DataSource) ctx.lookup("java:comp/env/"+dataSourceJNDIName);
....
try {
    return datasource.getConnection();  /*this  throws exception*/
}catch (Exception e){

}
4. the exeption and its message are :

org.apache.commons.dbcp.SQLNestedException: 
  Cannot create JDBC driver of class '' for connect URL 'null'