是否可以手动调用Spring Scheduled方法 [英] Is it possible to call a spring scheduled method manually

问题描述

有没有一种方法可以通过用户交互来调用Spring Scheduled方法（作业）？我需要创建一个显示所有作业的表，并且用户应该能够手动执行它们。确保作业可以自动运行，但用户应该可以手动启动它们。

Is there a way to call a spring scheduled method (job) through a user interaction? I need to create a table with shown all jobs and the user should be able to execute them manually. For sure the jobs run automatically but the user should be able to start them manually.

@Configuration
@EnableScheduling
public class ScheduleConfiguration {

    @Bean
    public ScheduledLockConfiguration taskScheduler(LockProvider 
     lockProvider) {
        return ScheduledLockConfigurationBuilder
                .withLockProvider(lockProvider)
                .withPoolSize(15)
                .withDefaultLockAtMostFor(Duration.ofHours(3))
                .build();
    }

    @Bean
    public LockProvider lockProvider(DataSource dataSource) {
        return new JdbcTemplateLockProvider(dataSource);
    }
}

@Component
public class MyService {

    @Scheduled(fixedRateString = "1000")
    @SchedulerLock(name = "MyService.process", lockAtLeastFor = 30000)
    @Transactional
    public void process() {
        // do something
    }
}

推荐答案

下面是使用 TaskScheduler ：

@Component
public class SomeTask implements Runnable {

    private static final Logger log = LoggerFactory.getLogger();

    @Autowired
    public SomeDAO someDao;

    @Override
    public void run() {
        // do stuff
    }
}

创建 TaskScheduler bean：

Creating TaskScheduler bean:

@Configuration
public class TaskSchedulerConfig {

    @Bean
    public TaskScheduler taskScheduler() {
        ThreadPoolTaskScheduler threadPoolTaskScheduler = new ThreadPoolTaskScheduler();
        threadPoolTaskScheduler.setPoolSize(5);
        threadPoolTaskScheduler.setThreadNamePrefix("ThreadPoolTaskScheduler");
        return threadPoolTaskScheduler;
    }
}

定期执行的计划任务：

Scheduling task for periodic execution:

@Component
public class ScheduledTasks {
    @Autowired private TaskScheduler taskScheduler;

    // Tasks
    @Autowired private SomeTask task1; // autowired in case the task has own autowired dependencies
    @Autowired private AnotherTask task2;

    @PostConstruct
    public void scheduleTasks() {
        taskScheduler.schedule(task1, new PeriodicTrigger(20, TimeUnit.SECONDS));
        taskScheduler.schedule(task2, new CronTrigger("0 0 4 1/1 * ? *"));
    }
}

通过http请求手动调用任务：

Manually invoking a task via a http request:

@Controller
public class TaskController {

    @Autowired private TaskScheduler taskScheduler;

    // Tasks
    @Autowired private SomeTask task1;

    @RequestMapping(value = "/executeTask")
    public void executeTask() {
        taskScheduler.schedule(task1, new Date()); // schedule task for current time
    }
}

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