Class 'com.mchange.v2.c3p0.ComboPooledDataSource' not found

Question

Where do I suppose to indicate class dependency when I got error messages:

• Class 'com.mchange.v2.c3p0.ComboPooledDataSource' not found
• Class 'org.springframework.jdbc.datasource.DataSourceTransactionManager' not found

jdbc-context.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:p="http://www.springframework.org/schema/p"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <context:property-placeholder location="/WEB-INF/spring.properties" />

    <tx:annotation-driven transaction-manager="transactionManager" />

    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
        destroy-method="close"
        p:driverClass="${jdbc.driverClassName}"
        p:jdbcUrl="${jdbc.url}"
        p:user="${jdbc.username}"
        p:password="${jdbc.password}"
        p:acquireIncrement="5"
        p:idleConnectionTestPeriod="60"
        p:maxPoolSize="100"
        p:maxStatements="50"
        p:minPoolSize="10" />

    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager" p:dataSource-ref="dataSource" />
</beans>

Answer 1

First of all, I suggest to use the same version of namespaces. In your case take 2.5 or 3.0. Or even current version But do not use different versions in same project.

About your first problem:

Class 'com.mchange.v2.c3p0.ComboPooledDataSource' not found

Have you included in your classpath 'c3p0-0.9.1.2.jar'?

In second case you should include to classpath 'spring-jdbc-x.x.jar' depending the version of Spring you decide to use.