jbpm工作流 在任务执行过程中关闭

TaskService taskService = processEngine.getTaskService();TopupContract topupContract = topupContractService.readTopupContract(id);ExecutionService executionService = processEngine.getExecutionService();Task task = taskService.getTask(this.getTaskId());Execution execution = executionService.findExecutionById(task.getExecutionId());Execution processInstance = execution.getProcessInstance();taskService.completeTask(this.getTaskId());processEngine.getExecutionService().deleteProcessInstance(processInstance.getId());