我正在尝试创建一个restapi，它必须异步执行后台数据库获取操作，并且在不等待后台执行完成的情况下将事务id返回给调用者。我目前已经使用executor实现了这个。但是当父线程在可运行任务执行之前完成操作时，我得到一个空指针异常。有什么解决办法吗？在这里，甚至在db操作开始执行之前就调用了return responseentity。

@Configuration
@EnableAsync
public class AsynchConfig {

    @Bean(name = "taskExecutor")
    public Executor taskExecutor()
    {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(2);
        executor.setMaxPoolSize(2);
        executor.setQueueCapacity(100);
        executor.setThreadNamePrefix("CurrentThread -");
        return executor;
    }

rest api如下：

@ApiOperation("")
public ResponseEntity<?> uploadCSVSendCommunication(@RequestParam String parameters)
{
asyncConfig.taskExecutor().execute(() -> 
        {
            //perform DB validations in a service

        }   );

        asyncConfig.taskExecutor().execute(() -> 
        {
        //Insert a record into transaction table

        if(!statusId.isEmpty())
        //set the status object;

        });

        return new ResponseEntity<>(statusObject, HttpStatus.OK);   
    }