Class load error on Spring MVC project for Spring newbie - spring

Question

Warning: newbie alert!
I'm in early days of learning Spring and am trying to get my first app up and running which will simply read some data from a DB and display it.
I'm using SpringSource Tool Suite 2.8.0.RELEASE. I've created a new Spring MVC project and want to read some data from a local MySQL DB.
I wrote a simple DAO class:
package com.blah.blah;
import org.springframework.jdbc.core.support.JdbcDaoSuppo rt;
public class MyDAO extends JdbcDaoSupport {
I've added this to the pom.xml file:
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${org.springframework-version}</version>
</dependency>
I've added this to the root-context.xml (is this the right config file to update?):
<bean id="myDataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/dbname" />
<property name="username" value="root" />
<property name="password" value="mypw" />
</bean>
<bean id="jdbcTemplate"
class="org.springframework.jdbc.core.JdbcTemplate" >
<constructor-arg ref="myDataSource"></constructor-arg>
</bean>
<bean id="parentDAO"
class="org.springframework.jdbc.core.support.JdbcD aoSupport">
<property name="dataSource" ref="myDataSource"></property>
</bean>
When I right-click on the project and select Debug As > Debug On Server I get the error:
24-Mar-2012 16:13:42 org.apache.catalina.core.StandardContext listenerStart
SEVERE: Exception sending context initialized event to listener instance of
class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.CannotLoadBeanClassException:
Cannot find class [org.springframework.jdbc.datasource.DriverManagerDataSource]
for bean with name 'myDataSource' defined in ServletContext resource
[/WEB-INF/spring/root-context.xml]; nested exception is
java.lang.ClassNotFoundException: org.springframework.jdbc.datasource.DriverManagerDataSource
I've been looking at this for a while and can't figure out what I'm doing wrong. I've found the folder where the app is deployed to (C:\Program Files\springsource\vfabric-tc-server-developer-2.6.1.RELEASE\spring-insight-instance\wtpwebapps\MyAppName\WEB-INF\lib on my machine) and the lib folder contains spring-jdbc-3.1.0.RELEASE.jar and when I open it, I can see the DriverManagerDataSource class file so I don't know why I'm getting the error above.
Any advice greatly appreciated.

Answer 1

Check that the Spring libraries are in the classpath so they are available for the server.

Answer 2

I had the same jar file included in the project twice. Removed one and it worked.

Answer 3

I had the same problem in Eclipse and creating a new workspace solved this problem.

Answer 4

I had added required jar source instead of release. Strange but changing that to release version fixed this problem.