Just to add to my bermusement at this problem, I've used the following jsp page and this works fine!

I've tried every link I can think of and people have the problem but no-one seems to have a solution!

Mark

<%@ page import="java.sql.*" %>

<html><body>

<%
Class.forName("com.mysql.jdbc.Driver").newInstance();
connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/fyptest", "javauser", "pilks2");
statement = connection.createStatement();
rs = statement.executeQuery("SELECT * FROM testdata");

while (rs.next()) {
out.println(rs.getString("foo")+"<br>");
}

rs.close();
conn.close();
%>

</body></html>

----- Original Message ----- From: "Mark Whitby" <[EMAIL PROTECTED]>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Sunday, February 19, 2006 7:26 PM
Subject: Re: JNDI Datasource Problem


I've done that and I now get the following error:

org.apache.jasper.JasperException: Unable to get connection, DataSource invalid: "java.sql.SQLException: No suitable driver"

This is what I have in my context.xml file:

<!-- The contents of this file will be loaded for each web application -->
<Context>

   <!-- Default set of monitored resources -->
   <WatchedResource>WEB-INF/web.xml</WatchedResource>

<!-- Uncomment this to disable session persistence across Tomcat restarts -->
   <!--
   <Manager pathname="" />
   -->

<ResourceLink
           name="jdbc/TestDB"
           global="jdbc/TestDB"
           type="javax.sql.DataSource" auth="Container" />


</Context>


Any further suggestions?

Mark
----- Original Message ----- From: "Parsons Technical Services" <[EMAIL PROTECTED]>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Sunday, February 19, 2006 7:02 PM
Subject: Re: JNDI Datasource Problem


Look up resource link. It goes in the context.xml

Also only put the jar file in the common/lib and no where else.


----- Original Message ----- From: "Mark Whitby" <[EMAIL PROTECTED]>
To: "Tomcat Users List" <users@tomcat.apache.org>
Sent: Sunday, February 19, 2006 12:53 PM
Subject: JNDI Datasource Problem


Hey guys,

Thanks for the help with the previous problem I had, I've managed to solve them now thanks to your help. But now I'm having a problem with setting up a DataSource connection. I've followed the example word for word and got the following error:

javax.servlet.ServletException: Unable to get connection, DataSource invalid: "org.apache.tomcat.dbcp.dbcp.SQLNestedException: Cannot create JDBC driver of class '' for connect URL 'null'"

I did a google search for this but only managed to find something on the NetBeans website which wasn't much help. I've edited the server.xml file as stated, placed the relevent jar file (mysql-connector-java-3.1.12-bin.jar) in the lib folder in my web application and in the /common/lib folder in the Tomcat home folder and I've reset the server and I'm still getting the same problem.

I'm using MySQL, database is called 'fyptest' and the table is called 'testdata'. So where am I going wrong?

Many thanks

Mark Whitby

Server.xml file:

<Context path="/DBTest" docBase="DBTest"
       debug="5" reloadable="true" crossContext="true">

 <Logger className="org.apache.catalina.logger.FileLogger"
            prefix="localhost_DBTest_log." suffix=".txt"
            timestamp="true"/>

 <Resource name="jdbc/TestDB"
              auth="Container"
              type="javax.sql.DataSource"/>

 <ResourceParams name="jdbc/TestDB">
   <parameter>
     <name>factory</name>
     <value>org.apache.commons.dbcp.BasicDataSourceFactory</value>
   </parameter>

   <!-- Maximum number of dB connections in pool. Make sure you
        configure your mysqld max_connections large enough to handle
        all of your db connections. Set to 0 for no limit.
        -->
   <parameter>
     <name>maxActive</name>
     <value>100</value>
   </parameter>

   <!-- Maximum number of idle dB connections to retain in pool.
        Set to -1 for no limit.  See also the DBCP documentation on this
        and the minEvictableIdleTimeMillis configuration parameter.
        -->
   <parameter>
     <name>maxIdle</name>
     <value>30</value>
   </parameter>

   <!-- Maximum time to wait for a dB connection to become available
        in ms, in this example 10 seconds. An Exception is thrown if
        this timeout is exceeded.  Set to -1 to wait indefinitely.
        -->
   <parameter>
     <name>maxWait</name>
     <value>10000</value>
   </parameter>

   <!-- MySQL dB username and password for dB connections  -->
   <parameter>
    <name>username</name>
    <value>javauser</value>
   </parameter>
   <parameter>
    <name>password</name>
    <value>pilks2</value>
   </parameter>

<!-- Class name for the old mm.mysql JDBC driver - uncomment this entry and comment next if you want to use this driver - we recommend using Connector/J though
   <parameter>
      <name>driverClassName</name>
      <value>org.gjt.mm.mysql.Driver</value>
   </parameter>
    -->

   <!-- Class name for the official MySQL Connector/J driver -->
   <parameter>
      <name>driverClassName</name>
      <value>com.mysql.jdbc.Driver</value>
   </parameter>

   <!-- The JDBC connection url for connecting to your MySQL dB.
        The autoReconnect=true argument to the url makes sure that the
mm.mysql JDBC Driver will automatically reconnect if mysqld closed the connection. mysqld by default closes idle connections after 8 hours.
        -->
   <parameter>
     <name>url</name>

<value>jdbc:mysql://localhost:3306/fyptest?autoReconnect=true</value>
   </parameter>
 </ResourceParams>
</Context>

web.xml file:

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



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