Help! use DataSource in Tomcat

Question

I configure server.xml and web.xml in tomcat to use DataSource
server.xml is
<Resource name="jdbc/jsptest" auth="Container"
               type="javax.sql.DataSource"/>
               <ResourceParams name="jdbc/jsptest">                    
<parameter><name>user</name><value>aa</value></parameter>
<parameter><name>password</name><value>aa</value></parameter>
<parameter><name>driverClassName</name>
<value>sun.jdbc.odbc.JdbcOdbcDriver</value></parameter>
<parameter><name>driverName</name>
<value>jdbc:odbc:ejbtest</value></parameter>
</ResourceParams>
and the web.xml is
<web-app>
<resource-ref>
<description>Resource reference to a factory for java.sql.Connection instances that may be used for talking to a particular database that is configured in the server.xml file.</description>
<res-ref-name>jdbc/jsptest</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
<res-sharing-scope>Sharable</res-sharing-scope>
</resource-ref>
</web-app>
but ,when I run my jsp ,it always throws
TyrexDataSourceFactory: Cannot create DataSource, Exception
java.lang.ClassNotFoundException: org.hsql.jdbcDriver
I didn't use org.hsql.jdbcDriver ,so I change other jdbc Drivers and receive same
result,why?
Thank everyone ,it drives me crazy!

Answer 1

Dear kbpv43a
here iam facing the same problem as "ClassNotFoundException: org.hsql.JDBCDriver" even after iam using thin driver for oracle database. i already commented as i dont know where i missed to close
the /> end tag. but still its throwing the same exception.
can u please help me by just going through my program and suggest me
where i committed mistake..??
here are my server.xml,web.xml and servletApplication for gettting conection from the pool using thin driver for oracle using Tomcat4.0.4
version.
thanx.
server.xml
<Server port="8005" shutdown="SHUTDOWN" debug="0">
          <!-- Tomcat Stand-Alone Service -->
<Service name="Tomcat-Standalone">
     <!-- Non-SSL HTTP/1.1 Connector on port 8080 -->
<Connector className="org.apache.catalina.connector.http.HttpConnector"
port="8080" minProcessors="5" maxProcessors="75"
enableLookups="true" redirectPort="8443"
acceptCount="10" debug="0" connectionTimeout="60000"/>
          <!-- AJP 1.3 Connector on port 8009 -->
<Connector className="org.apache.ajp.tomcat4.Ajp13Connector"
port="8009" minProcessors="5" maxProcessors="75"
acceptCount="10" debug="0"/>
          <!-- Top level container in our container hierarchy -->
<Engine name="Standalone" defaultHost="localhost" debug="0">
     <!-- Global logger unless overridden at lower levels -->
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="catalina_log." suffix=".txt"
timestamp="true"/>
     <!-- Because this Realm is here, an instance will be shared globally
          <Realm className="org.apache.catalina.realm.MemoryRealm" /> -->
<Realm className="org.apache.catalina.realm.JDBCRealm" debug="99"
          driverName="oracle.jdbc.driver.OracleDriver"
               connectionURL="jdbc:oracle:thin:@oracle:1521:ORCL"
connectionName = "mail"
connectionPassword = "mail"
          userTable="users" userNameCol="user_name" userCredCol="user_pass"
               userRoleTable="user_roles" roleNameCol="role_name" />
               <!-- Define the default virtual host -->
<Host name="localhost" debug="1" appBase="webapps" unpackWARs="true">
     <Valve className="org.apache.catalina.valves.AccessLogValve"
     directory="logs" prefix="localhost_access_log." suffix=".txt"
     pattern="common"/>
<Logger className="org.apache.catalina.logger.FileLogger"
directory="logs" prefix="localhost_log." suffix=".txt"
     timestamp="true"/>
               <!-- Tomcat Root Context -->
               <!-- Tomcat Manager Context -->
<Context path="/manager" docBase="manager" debug="0" privileged="true"/>
<!-- My context, username=good and password=bad for my oracle to connect -->
     <Context path="/localhost" docBase="localhost" debug="0" reloadable="false" override="true">
          <Resource name="jdbc/myConnection" auth="Container" type="javax.sql.DataSource"/>
          <ResourceParams name="jdbc/myConnection">
               <parameter><name>user</name><value>good</value></parameter>
               <parameter><name>password</name><value>bad</value></parameter>
               <parameter><name>driverClassName</name><value>oracle.jdbc.driver.OracleDriver</value></parameter>
               <parameter>
                    <name>url</name>
                    <value>jdbc:oracle:thin:@oracle:1521:ORCL</value>
               </parameter>
               <parameter>
                    <name>maxActive</name>
                    <value>32</value>
               </parameter>
               <parameter>
                    <name>maxIdle</name>
                    <value>10</value>
               </parameter>
          </ResourceParams>
<!-- end of MY Context -->
               <!-- Tomcat Examples Context
<Context path="/examples" docBase="examples" debug="0" reloadable="true" crossContext="true">
-->
<!--
<Logger className="org.apache.catalina.logger.FileLogger" prefix="localhost_examples_log." suffix=".txt" timestamp="true"/>
     <Ejb name="ejb/EmplRecord" type="Entity" home="com.wombat.empl.EmployeeRecordHome" remote="com.wombat.empl.EmployeeRecord"/>
<Environment name="maxExemptions" type="java.lang.Integer" value="15"/>
<Parameter name="context.param.name" value="context.param.value" override="false"/>
<Resource name="jdbc/EmployeeAppDb" auth="SERVLET" type="javax.sql.DataSource"/>
<ResourceParams name="jdbc/EmployeeAppDb">
<parameter><name>user</name><value>sa</value></parameter>
<parameter><name>password</name><value></value></parameter>
<parameter><name>driverClassName</name><value>org.hsql.jdbcDriver</value></parameter>
<parameter><name>driverName</name><value>jdbc:HypersonicSQL:database</value></parameter>
</ResourceParams>
<Resource name="mail/Session" auth="Container" type="javax.mail.Session"/>
<ResourceParams name="mail/Session">
<parameter>
<name>mail.smtp.host</name>
<value>localhost</value>
</parameter>
</ResourceParams>
-->
</Context>
</Host>
</Engine>
</Service>
     <!-- Define an Apache-Connector Service -->
<Service name="Tomcat-Apache">
<Connector className="org.apache.catalina.connector.warp.WarpConnector"
port="8008" minProcessors="5" maxProcessors="75"
enableLookups="true" appBase="webapps"
acceptCount="10" debug="0"/>
<Engine className="org.apache.catalina.connector.warp.WarpEngine"
name="Apache" debug="0">
<Logger className="org.apache.catalina.logger.FileLogger"
prefix="apache_log." suffix=".txt"
timestamp="true"/>
          <Realm className="org.apache.catalina.realm.MemoryRealm" />
</Engine>
</Service>
</Server>
web.xml
<?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>conServlet</servlet-name>
<servlet-class>conServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>conServlet</servlet-name>
<url-pattern> /conServlet </url-pattern>
</servlet-mapping>
<resource-ref>
<description> Resource reference to java.sql.Connection
factory defined in server.xml
</description>
<res-ref-name>jdbc/myConnection</res-ref-name>
<res-type>javax.sql.DataSource</res-type>
<res-auth>Container</res-auth>
</resource-ref>
</web-app>
Servlet Application:
public void service(HttpServletRequest req,HttpServletResponse res)throws ServletException,IOException
     res.setContentType("text/html");
     PrintWriter out = res.getWriter();
//Ordinary jdbc connection      
               //DriverManager.registerDriver(new oracle.jdbc.driver.OracleDriver());
               //con=DriverManager.getConnection("jdbc:oracle:thin:@oracle:1521:ORCL","mail","mail");
               //out.println("Your con=="+con);
try
// jdbc connection from pool
     Context initCtx = new InitialContext();
Context envCtx = (Context)initCtx.lookup("java:/comp/env");
DataSource ds = (DataSource)envCtx.lookup("jdbc/myConnection");
conn = ds.getConnection();
     out.println("conn : " + conn);
conn.close();
     catch (Exception e)
     out.println("conn failed : " + e);
Note: my oralce username is "good" and password is "bad"
here