jbpm报错：Error creating bean with name 'processEngine'

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'processEngine' defined in class path resource [spring/applicationContext-db.xml]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.jbpm.api.ProcessEngine org.jbpm.pvm.internal.processengine.SpringHelper.createProcessEngine()] threw exception; nested exception is org.jbpm.api.JbpmException: no jBPM DB schema: no JBPM4_EXECUTION table.   Run the create.jbpm.schema target first in the install tool.org.springframework.beans.factory.BeanCreationE