ProcessDefinitionBehavior processDefinition=processInstance.getProcessDefinition();
//获取指定的节点
BaseElement baseElement=processDefinition.getDefinitions().getElement(nodeId);
if(baseElement instanceof FlowNode){
FlowNode flowNode= (FlowNode)baseElement;
ExecutionContext executionContext=ProcessObjectFactory.FACTORYINSTANCE.createExecutionContext(token);
//让令牌进入节点开始走流程
flowNode.enter(executionContext);
}else{
}
commandContext.getProcessInstanceManager().saveProcessInstance(processInstance);