ActivejdbcTransactionManager.java

public class ActivejdbcTransactionManager extends DataSourceTransactionManager {
    @Override
    protected Object doGetTransaction() throws TransactionException {
        Object txObject = super.doGetTransaction();
        Method getConnectionHolder = ReflectionUtils.findMethod(txObject.getClass(), "getConnectionHolder");
        ConnectionHolder connectionHolder = (ConnectionHolder)ReflectionUtils.invokeMethod(getConnectionHolder, txObject);
        Connection connection;
        if(connectionHolder == null) {
            try {
                connection = this.getDataSource().getConnection();
            } catch (SQLException ex) {
                throw new CannotCreateTransactionException("Could not open JDBC Connection for transaction", ex);
            }
            connectionHolder = new ConnectionHolder(connection);
            Method setConnectionHolder = ReflectionUtils.findMethod(txObject.getClass(), "setConnectionHolder", ConnectionHolder.class);
            ReflectionUtils.invokeMethod(setConnectionHolder, txObject, connectionHolder);
        } else {
            connection = connectionHolder.getConnection();
        }

        Method attach = ReflectionUtils.findMethod(ConnectionsAccess.class, "attach", String.class, Connection.class, String.class);
        attach.setAccessible(true);
        ReflectionUtils.invokeMethod(attach, null, "default", connection, "");

        return txObject;
    }
}

spring.xml

<bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="url" value="jdbc:mysql://localhost:3306/test" />
    <property name="username" value="root"/>
    <property name="password" value="" />
    <property name="driverClassName" value="com.mysql.jdbc.Driver" />
</bean>

<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="false" />

<bean id="transactionManager" class="activejdbc.ActivejdbcTransactionManager">
    <property name="dataSource" ref="dataSource" />
</bean>