SpringBoot+Activiti 5 启动报错

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'processEngine': FactoryBean threw exception on object creation; nested exception is org.activiti.engine.ActivitiException: couldn't check if tables are already present using metadata: 
### Error getting a new connection.  Cause: java.sql.SQLException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: org.h2.Driver
### Cause: java.sql.SQLException: Error setting driver on UnpooledDataSource. Cause: java.lang.ClassNotFoundException: org.h2.Driver
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:176)
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:101)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getObjectForBeanInstance(AbstractBeanFactory.java:1828)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.getObjectForBeanInstance(AbstractAutowireCapableBeanFactory.java:1265)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:334)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1307)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1227)
    at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:884)
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:788)
    ... 48 common frames omitted

今天整合了activiti启动直接报错，

@Configuration
public class ActivitiDataSourceConfig extends AbstractProcessEngineAutoConfiguration {

    @Resource
    private ActivitiDataSourceProperties activitiDataSourceProperties;

    @Resource
    private DataSource dataSource;

    @Bean
    public PlatformTransactionManager transactionManager() {
        return new DataSourceTransactionManager(dataSource);
    }


    @Bean
    public SpringProcessEngineConfiguration springProcessEngineConfiguration() {
        SpringProcessEngineConfiguration configuration = new SpringProcessEngineConfiguration();
        //configuration.setDataSource(activitiDataSource());
        configuration.setDatabaseSchemaUpdate(ProcessEngineConfiguration.DB_SCHEMA_UPDATE_TRUE);
        configuration.setJobExecutorActivate(true);
        configuration.setTransactionManager(transactionManager());
        configuration.setActivityFontName("宋体");
        configuration.setLabelFontName("宋体");
        configuration.setAnnotationFontName("宋体");
        //id生成器
        //configuration.setIdGenerator(new MyUUIDgenerator());
        return configuration;
    }
}

有没有人知道是什么原因，一上午了，都没解决。刚开始接触，

是不是少了org.h2.Driver这个jar包