Only no-arg methods may be annotated with @Scheduled報錯

問題背景

今天在弄一個手工爬蟲框架的時候，由於有個功能如下：

• 在列表界面點擊抓取，進行手工抓取
• 後臺根據application.yml設置的定時任務自動觸發抓取任務
  

    /**
     * 廣東省政府採購中心
     */
    @PostMapping("/fetchCGZX")
    @Scheduled(cron="${scheduler.fetch}")
    public ReturnT fetchCGZX(boolean manual){
        if(!manual&&!schedulerUtil.SchedulerEnable){
            log.info("未啓動定時任務");
            return ReturnT.ERROR("未啓動定時任務");
        }else{
            return tenderService.fetchCGZX();
        }
    }

報錯分析

根據錯誤信息我們可以分析，定時任務是不能帶參數的，也就是參數欄必須爲空，這是SpringBoot自帶Scheduler比較雞肋的地方吧，但是如果你確定了用他，就必須要遵守這個規則，儘量使用無參數設置。

nested exception is java.lang.IllegalStateException: Encountered invalid @Scheduled method ‘syncCGZX’: Only no-arg methods may be annotated with @Scheduled

控制檯輸出

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'tenderController' defined in file [D:\workspace\java\TenderFetchSystem\target\classes\com\softdev\system\controller\TenderController.class]: Initialization of bean failed; nested exception is java.lang.IllegalStateException: Encountered invalid @Scheduled method 'syncCGZX': Only no-arg methods may be annotated with @Scheduled
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:603) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:226) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:895) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.__refresh(AbstractApplicationContext.java:550) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.jrLockAndRefresh(AbstractApplicationContext.java:40002) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:41008) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE]
	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE]
	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE]
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.7.RELEASE.jar:2.2.7.RELEASE]
	at com.softdev.system.Application.main(Application.java:15) [classes/:na]
Caused by: java.lang.IllegalStateException: Encountered invalid @Scheduled method 'syncCGZX': Only no-arg methods may be annotated with @Scheduled
	at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.processScheduled(ScheduledAnnotationBeanPostProcessor.java:499) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.lambda$null$1(ScheduledAnnotationBeanPostProcessor.java:362) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at java.lang.Iterable.forEach(Iterable.java:75) ~[na:1.8.0_222]
	at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.lambda$postProcessAfterInitialization$2(ScheduledAnnotationBeanPostProcessor.java:362) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[na:1.8.0_222]
	at org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor.postProcessAfterInitialization(ScheduledAnnotationBeanPostProcessor.java:361) ~[spring-context-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:431) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1800) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595) ~[spring-beans-5.2.6.RELEASE.jar:5.2.6.RELEASE]
	... 17 common frames omitted


Process finished with exit code 1

解決方案

1. 換用其他定時任務
2. 改造成兩個方法，一個手工觸發一個定時觸發

    /**
     * 廣東省政府採購中心
     */
    @PostMapping("/fetchCGZX")
    public ReturnT fetchCGZX(){
        return tenderService.fetchCGZX();
    }
    /**
     * 廣東省政府採購中心
     */
    @Scheduled(cron="${scheduler.fetch}")
    public ReturnT fetchCGZX_job(){
        //判斷是否啓用
        if(!schedulerUtil.SchedulerEnable){
            log.info("未啓動定時任務");
            return ReturnT.ERROR("未啓動定時任務");
        }else{
            return tenderService.fetchCGZX();
        }
    }