Spring app doesn't find datasource in config files - spring

Question

When I deploy my spring app (Spring 2.5.6) onto a Tomcat (6.0), start up fails with
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'hibernateSessionFactory' defined in class path resource [C.xml]: Cannot resolve reference to bean 'dataSource' while setting bean property 'dataSource'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'dataSource' is defined
My web.xml looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="[snip]" 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">
<display-name>[snip]</display-name>
<welcome-file-list>
[snip]
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:All.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>[snip]</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>[snip]</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
</web-app>
All.xml imports a number of configuration files:
<import resource="A.xml"/>
<import resource="B.xml"/>
<import resource="C.xml"/>
...
B.xml defines a data source:
<jee:jndi-lookup id="dataSource" jndi-name="[snip]"/>
C.xml creates a hibernate session factory, referencing the data source from B.xml:
<bean id="hibernateSessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="mappingResources">
<list>
<value>[snip]</value>
<value>[snip]</value>
</list>
</property>
<property name="hibernateProperties">
<props>
[snip]
</props>
</property>
<property name="dataSource" ref="dataSource" />
</bean>
When I deploy my WAR file, above exception occurs. My questions are:
Why?
Why does the same exception not occur in my JUnit test that I wrote to test the validity of the spring configuration? Here's the test:
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration(locations = { "/All.xml" })
public class ImfSpringConfigurationTest {
[snip]]
}
Note: In the JUnit test, I use a different All.xml file to replace B.xml with a file that defines a data source without jndi lookup, like so:
<bean id="dataSource"
class="org.springframework.jdbc.datasource.DriverManagerDataSource"
p:driverClassName = "oracle.jdbc.driver.OracleDriver"
[snip] />
**
Turns out, this configuration is correct. It was the deploy of another module operating on some of the same config files that threw the exception, not this deploy process.

Answer 1

Try pull in the top level context using a wildcard operator :
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>WEB-INF/classes/spring*.xml</param-value>
</context-param>