修改@Scheduled注解增加enable参数使其支持在配置文件中打开和关闭

实现效果

@EnabledSchedule(enableString = "${ECIFTask.addIssueOrgInfoList.enable}",cron = "${ECIFTask.addIssueOrgInfoList.cron}")

ECIFTask:
  addIssueOrgInfoList:
    enable: false
    cron: 0 0/1 9-21 * * *

如何使用

启动类上面新增这个注解

自定义注解EnabledSchedule

完完全全的copy@Scheduled注解，新增两个参数：enable和enableString，enable是boolean类型，enableString是string类型，enableString支持从配置文件配置任务的启停，修改的代码很少，可以先把这四个文件复制，然后扫一眼就完事了，在修改的地方添加了注释

package com.pkyou.Sample.annotations;

import org.springframework.scheduling.config.ScheduledTaskRegistrar;

import java.lang.annotation.*;
@Target({ElementType.METHOD, ElementType.ANNOTATION_TYPE})
@Retention(RetentionPolicy.RUNTIME)
@Documented
public @interface EnabledSchedule {
    /**
     * 配置任务的启停
     * @return true/false
     */
    boolean enable() default true;
    /**
     * 支持从配置文件启停定时任务
     * @return true/false
     */
    String enableString() default "true";
    
    String cron() default "";

    String zone() default "";

    long fixedDelay() default -1;

    String fixedDelayString() default "";
    
    long fixedRate() default -1;

    String fixedRateString() default "";
    
    long initialDelay() default -1;

    String initialDelayString() default "";
}

package com.pkyou.Sample.annotations;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.framework.AopInfrastructureBean;
import org.springframework.aop.framework.AopProxyUtils;
import org.springframework.aop.support.AopUtils;
import org.springframework.beans.factory.*;
import org.springframework.beans.factory.config.AutowireCapableBeanFactory;
import org.springframework.beans.factory.config.ConfigurableBeanFactory;
import org.springframework.beans.factory.config.DestructionAwareBeanPostProcessor;
import org.springframework.beans.factory.config.NamedBeanHolder;
import org.springframework.beans.factory.support.MergedBeanDefinitionPostProcessor;
import org.springframework.beans.factory.support.RootBeanDefinition;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.context.ApplicationListener;
import org.springframework.context.EmbeddedValueResolverAware;
import org.springframework.context.event.ContextRefreshedEvent;
import org.springframework.core.MethodIntrospector;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.AnnotatedElementUtils;
import org.springframework.core.annotation.AnnotationAwareOrderComparator;
import org.springframework.core.annotation.AnnotationUtils;
import org.springframework.scheduling.TaskScheduler;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.annotation.Schedules;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.CronTask;
import org.springframework.scheduling.config.IntervalTask;
import org.springframework.scheduling.config.ScheduledTask;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;
import org.springframework.scheduling.support.CronTrigger;
import org.springframework.scheduling.support.ScheduledMethodRunnable;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
import org.springframework.util.StringValueResolver;

import java.lang.reflect.Method;
import java.time.Duration;
import java.util.*;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ScheduledExecutorService;
/**
 * @author luzh32717
 * @version 1.0
 * @date 2020/12/27 17:25
 * @since 3.0
 * @see EnabledSchedule
 * @see org.springframework.scheduling.annotation.EnableScheduling
 * @see SchedulingConfigurer
 * @see org.springframework.scheduling.TaskScheduler
 * @see org.springframework.scheduling.config.ScheduledTaskRegistrar
 * @see org.springframework.scheduling.annotation.AsyncAnnotationBeanPostProcessor
 */
public class EnabledScheduledAnnotationBeanPostProcessor
        implements MergedBeanDefinitionPostProcessor, DestructionAwareBeanPostProcessor,
        Ordered, EmbeddedValueResolverAware, BeanNameAware, BeanFactoryAware, ApplicationContextAware,
        SmartInitializingSingleton, ApplicationListener<ContextRefreshedEvent>, DisposableBean {

    /**
     * The default name of the {@link TaskScheduler} bean to pick up: "taskScheduler".
     * <p>Note that the initial lookup happens by type; this is just the fallback
     * in case of multiple scheduler beans found in the context.
     * @since 4.2
     */
    public static final String DEFAULT_TASK_SCHEDULER_BEAN_NAME = "taskScheduler";


    protected final Log logger = LogFactory.getLog(getClass());

    private Object scheduler;

    private StringValueResolver embeddedValueResolver;

    private String beanName;

    private BeanFactory beanFactory;

    private ApplicationContext applicationContext;

    private final ScheduledTaskRegistrar registrar = new ScheduledTaskRegistrar();

    private final Set<Class<?>> nonAnnotatedClasses =
            Collections.newSetFromMap(new ConcurrentHashMap<Class<?>, Boolean>(64));

    private final Map<Object, Set<ScheduledTask>> scheduledTasks =
            new IdentityHashMap<Object, Set<ScheduledTask>>(16);


    @Override
    public int getOrder() {
        return LOWEST_PRECEDENCE;
    }

    /**
     * Set the {@link org.springframework.scheduling.TaskScheduler} that will invoke
     * the scheduled methods, or a {@link java.util.concurrent.ScheduledExecutorService}
     * to be wrapped as a TaskScheduler.
     * <p>If not specified, default scheduler resolution will apply: searching for a
     * unique {@link TaskScheduler} bean in the context, or for a {@link TaskScheduler}
     * bean named "taskScheduler" otherwise; the same lookup will also be performed for
     * a {@link ScheduledExecutorService} bean. If neither of the two is resolvable,
     * a local single-threaded default scheduler will be created within the registrar.
     * @see #DEFAULT_TASK_SCHEDULER_BEAN_NAME
     */
    public void setScheduler(Object scheduler) {
        this.scheduler = scheduler;
    }

    @Override
    public void setEmbeddedValueResolver(StringValueResolver resolver) {
        this.embeddedValueResolver = resolver;
    }

    @Override
    public void setBeanName(String beanName) {
        this.beanName = beanName;
    }

    /**
     * Making a {@link BeanFactory} available is optional; if not set,
     * {@link SchedulingConfigurer} beans won't get autodetected and
     * a {@link #setScheduler scheduler} has to be explicitly configured.
     */
    @Override
    public void setBeanFactory(BeanFactory beanFactory) {
        this.beanFactory = beanFactory;
    }

    /**
     * Setting an {@link ApplicationContext} is optional: If set, registered
     * tasks will be activated in the {@link ContextRefreshedEvent} phase;
     * if not set, it will happen at {@link #afterSingletonsInstantiated} time.
     */
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) {
        this.applicationContext = applicationContext;
        if (this.beanFactory == null) {
            this.beanFactory = applicationContext;
        }
    }


    @Override
    public void afterSingletonsInstantiated() {
        // Remove resolved singleton classes from cache
        this.nonAnnotatedClasses.clear();

        if (this.applicationContext == null) {
            // Not running in an ApplicationContext -> register tasks early...
            finishRegistration();
        }
    }

    @Override
    public void onApplicationEvent(ContextRefreshedEvent event) {
        if (event.getApplicationContext() == this.applicationContext) {
            // Running in an ApplicationContext -> register tasks this late...
            // giving other ContextRefreshedEvent listeners a chance to perform
            // their work at the same time (e.g. Spring Batch's job registration).
            finishRegistration();
        }
    }

    private void finishRegistration() {
        if (this.scheduler != null) {
            this.registrar.setScheduler(this.scheduler);
        }

        if (this.beanFactory instanceof ListableBeanFactory) {
            Map<String, SchedulingConfigurer> configurers =
                    ((ListableBeanFactory) this.beanFactory).getBeansOfType(SchedulingConfigurer.class);
            for (SchedulingConfigurer configurer : configurers.values()) {
                configurer.configureTasks(this.registrar);
            }
        }

        if (this.registrar.hasTasks() && this.registrar.getScheduler() == null) {
            Assert.state(this.beanFactory != null, "BeanFactory must be set to find scheduler by type");
            try {
                // Search for TaskScheduler bean...
                this.registrar.setTaskScheduler(resolveSchedulerBean(TaskScheduler.class, false));
            }
            catch (NoUniqueBeanDefinitionException ex) {
                logger.debug("Could not find unique TaskScheduler bean", ex);
                try {
                    this.registrar.setTaskScheduler(resolveSchedulerBean(TaskScheduler.class, true));
                }
                catch (NoSuchBeanDefinitionException ex2) {
                    if (logger.isInfoEnabled()) {
                        logger.info("More than one TaskScheduler bean exists within the context, and " +
                                "none is named 'taskScheduler'. Mark one of them as primary or name it 'taskScheduler' " +
                                "(possibly as an alias); or implement the SchedulingConfigurer interface and call " +
                                "ScheduledTaskRegistrar#setScheduler explicitly within the configureTasks() callback: " +
                                ex.getBeanNamesFound());
                    }
                }
            }
            catch (NoSuchBeanDefinitionException ex) {
                logger.debug("Could not find default TaskScheduler bean", ex);
                // Search for ScheduledExecutorService bean next...
                try {
                    this.registrar.setScheduler(resolveSchedulerBean(ScheduledExecutorService.class, false));
                }
                catch (NoUniqueBeanDefinitionException ex2) {
                    logger.debug("Could not find unique ScheduledExecutorService bean", ex2);
                    try {
                        this.registrar.setScheduler(resolveSchedulerBean(ScheduledExecutorService.class, true));
                    }
                    catch (NoSuchBeanDefinitionException ex3) {
                        if (logger.isInfoEnabled()) {
                            logger.info("More than one ScheduledExecutorService bean exists within the context, and " +
                                    "none is named 'taskScheduler'. Mark one of them as primary or name it 'taskScheduler' " +
                                    "(possibly as an alias); or implement the SchedulingConfigurer interface and call " +
                                    "ScheduledTaskRegistrar#setScheduler explicitly within the configureTasks() callback: " +
                                    ex2.getBeanNamesFound());
                        }
                    }
                }
                catch (NoSuchBeanDefinitionException ex2) {
                    logger.debug("Could not find default ScheduledExecutorService bean", ex2);
                    // Giving up -> falling back to default scheduler within the registrar...
                    logger.info("No TaskScheduler/ScheduledExecutorService bean found for scheduled processing");
                }
            }
        }

        this.registrar.afterPropertiesSet();
    }

    private <T> T resolveSchedulerBean(Class<T> schedulerType, boolean byName) {
        if (byName) {
            T scheduler = this.beanFactory.getBean(DEFAULT_TASK_SCHEDULER_BEAN_NAME, schedulerType);
            if (this.beanFactory instanceof ConfigurableBeanFactory) {
                ((ConfigurableBeanFactory) this.beanFactory).registerDependentBean(
                        DEFAULT_TASK_SCHEDULER_BEAN_NAME, this.beanName);
            }
            return scheduler;
        }
        else if (this.beanFactory instanceof AutowireCapableBeanFactory) {
            NamedBeanHolder<T> holder = ((AutowireCapableBeanFactory) this.beanFactory).resolveNamedBean(schedulerType);
            if (this.beanFactory instanceof ConfigurableBeanFactory) {
                ((ConfigurableBeanFactory) this.beanFactory).registerDependentBean(
                        holder.getBeanName(), this.beanName);
            }
            return holder.getBeanInstance();
        }
        else {
            return this.beanFactory.getBean(schedulerType);
        }
    }


    @Override
    public void postProcessMergedBeanDefinition(RootBeanDefinition beanDefinition, Class<?> beanType, String beanName) {
    }

    @Override
    public Object postProcessBeforeInitialization(Object bean, String beanName) {
        return bean;
    }

    /**
     * 在这个方法里面获取被注解的方法
     */
    @Override
    public Object postProcessAfterInitialization(final Object bean, String beanName) {
        Class<?> targetClass = AopUtils.getTargetClass(bean);
        if (!this.nonAnnotatedClasses.contains(targetClass)) {
            //修改为返回Map<Method, Set<EnabledSchedule>>
            Map<Method, Set<EnabledSchedule>> annotatedMethods = MethodIntrospector.selectMethods(targetClass,
                    new MethodIntrospector.MetadataLookup<Set<EnabledSchedule>>() {
                        @Override
                        public Set<EnabledSchedule> inspect(Method method) {
                            Set<EnabledSchedule> scheduledMethods = AnnotatedElementUtils.getAllMergedAnnotations(
                                    method, EnabledSchedule.class);
                            return (!scheduledMethods.isEmpty() ? scheduledMethods : null);
                        }
                    });
            if (annotatedMethods.isEmpty()) {
                this.nonAnnotatedClasses.add(targetClass);
                if (logger.isTraceEnabled()) {
                    logger.trace("No @Scheduled annotations found on bean class: " + bean.getClass());
                }
            }
            else {
                // Non-empty set of methods
                for (Map.Entry<Method, Set<EnabledSchedule>> entry : annotatedMethods.entrySet()) {
                    Method method = entry.getKey();
                    for (EnabledSchedule scheduled : entry.getValue()) {
                        processScheduled(scheduled, method, bean);
                    }
                }
                if (logger.isDebugEnabled()) {
                    logger.debug(annotatedMethods.size() + " @Scheduled methods processed on bean '" + beanName +
                            "': " + annotatedMethods);
                }
            }
        }
        return bean;
    }

    /**
     * 处理注解
     */
    protected void processScheduled(EnabledSchedule scheduled, Method method, Object bean) {
        try {
            Assert.isTrue(method.getParameterTypes().length == 0,
                    "Only no-arg methods may be annotated with @Scheduled");

            Method invocableMethod = AopUtils.selectInvocableMethod(method, bean.getClass());
            Runnable runnable = new ScheduledMethodRunnable(bean, invocableMethod);
            boolean processedSchedule = false;
            String errorMessage =
                    "Exactly one of the 'cron', 'fixedDelay(String)', or 'fixedRate(String)' attributes is required";

            Set<ScheduledTask> tasks = new LinkedHashSet<ScheduledTask>(4);
            //20201227 luzh add 新增enable
            if (!scheduled.enable()){
                return;
            }else {
                String enable = scheduled.enableString();
                boolean enableFlag = false;
                if(StringUtils.hasText(enable)){
                    if(this.embeddedValueResolver != null) {
                        enable = this.embeddedValueResolver.resolveStringValue(enable);
                    }
                    if ("true".equals(enable)){
                        enableFlag = true;
                    }
                }
                if (!enableFlag){
                    return;
                }
            }
            //20201227 luzh add 新增end
            // Determine initial delay
            long initialDelay = scheduled.initialDelay();
            String initialDelayString = scheduled.initialDelayString();
            if (StringUtils.hasText(initialDelayString)) {
                Assert.isTrue(initialDelay < 0, "Specify 'initialDelay' or 'initialDelayString', not both");
                if (this.embeddedValueResolver != null) {
                    initialDelayString = this.embeddedValueResolver.resolveStringValue(initialDelayString);
                }
                try {
                    initialDelay = Long.parseLong(initialDelayString);
                }
                catch (NumberFormatException ex) {
                    throw new IllegalArgumentException(
                            "Invalid initialDelayString value \"" + initialDelayString + "\" - cannot parse into integer");
                }
            }

            // Check cron expression
            String cron = scheduled.cron();
            if (StringUtils.hasText(cron)) {
                Assert.isTrue(initialDelay == -1, "'initialDelay' not supported for cron triggers");
                processedSchedule = true;
                String zone = scheduled.zone();
                if (this.embeddedValueResolver != null) {
                    cron = this.embeddedValueResolver.resolveStringValue(cron);
                    zone = this.embeddedValueResolver.resolveStringValue(zone);
                }
                TimeZone timeZone;
                if (StringUtils.hasText(zone)) {
                    timeZone = StringUtils.parseTimeZoneString(zone);
                }
                else {
                    timeZone = TimeZone.getDefault();
                }
                tasks.add(this.registrar.scheduleCronTask(new CronTask(runnable, new CronTrigger(cron, timeZone))));
            }

            // At this point we don't need to differentiate between initial delay set or not anymore
            if (initialDelay < 0) {
                initialDelay = 0;
            }

            // Check fixed delay
            long fixedDelay = scheduled.fixedDelay();
            if (fixedDelay >= 0) {
                Assert.isTrue(!processedSchedule, errorMessage);
                processedSchedule = true;
                tasks.add(this.registrar.scheduleFixedDelayTask(new IntervalTask(runnable, fixedDelay, initialDelay)));
            }
            String fixedDelayString = scheduled.fixedDelayString();
            if (StringUtils.hasText(fixedDelayString)) {
                Assert.isTrue(!processedSchedule, errorMessage);
                processedSchedule = true;
                if (this.embeddedValueResolver != null) {
                    fixedDelayString = this.embeddedValueResolver.resolveStringValue(fixedDelayString);
                }
                try {
                    fixedDelay = Long.parseLong(fixedDelayString);
                }
                catch (NumberFormatException ex) {
                    throw new IllegalArgumentException(
                            "Invalid fixedDelayString value \"" + fixedDelayString + "\" - cannot parse into integer");
                }
                tasks.add(this.registrar.scheduleFixedDelayTask(new IntervalTask(runnable, fixedDelay, initialDelay)));
            }

            // Check fixed rate
            long fixedRate = scheduled.fixedRate();
            if (fixedRate >= 0) {
                Assert.isTrue(!processedSchedule, errorMessage);
                processedSchedule = true;
                tasks.add(this.registrar.scheduleFixedRateTask(new IntervalTask(runnable, fixedRate, initialDelay)));
            }
            String fixedRateString = scheduled.fixedRateString();
            if (StringUtils.hasText(fixedRateString)) {
                Assert.isTrue(!processedSchedule, errorMessage);
                processedSchedule = true;
                if (this.embeddedValueResolver != null) {
                    fixedRateString = this.embeddedValueResolver.resolveStringValue(fixedRateString);
                }
                try {
                    fixedRate = Long.parseLong(fixedRateString);
                }
                catch (NumberFormatException ex) {
                    throw new IllegalArgumentException(
                            "Invalid fixedRateString value \"" + fixedRateString + "\" - cannot parse into integer");
                }
                tasks.add(this.registrar.scheduleFixedRateTask(new IntervalTask(runnable, fixedRate, initialDelay)));
            }

            // Check whether we had any attribute set
            Assert.isTrue(processedSchedule, errorMessage);

            // Finally register the scheduled tasks
            synchronized (this.scheduledTasks) {
                Set<ScheduledTask> registeredTasks = this.scheduledTasks.get(bean);
                if (registeredTasks == null) {
                    registeredTasks = new LinkedHashSet<ScheduledTask>(4);
                    this.scheduledTasks.put(bean, registeredTasks);
                }
                registeredTasks.addAll(tasks);
            }
        }
        catch (IllegalArgumentException ex) {
            throw new IllegalStateException(
                    "Encountered invalid @Scheduled method '" + method.getName() + "': " + ex.getMessage());
        }
    }


    @Override
    public void postProcessBeforeDestruction(Object bean, String beanName) {
        Set<ScheduledTask> tasks;
        synchronized (this.scheduledTasks) {
            tasks = this.scheduledTasks.remove(bean);
        }
        if (tasks != null) {
            for (ScheduledTask task : tasks) {
                task.cancel();
            }
        }
    }

    @Override
    public boolean requiresDestruction(Object bean) {
        synchronized (this.scheduledTasks) {
            return this.scheduledTasks.containsKey(bean);
        }
    }

    @Override
    public void destroy() {
        synchronized (this.scheduledTasks) {
            Collection<Set<ScheduledTask>> allTasks = this.scheduledTasks.values();
            for (Set<ScheduledTask> tasks : allTasks) {
                for (ScheduledTask task : tasks) {
                    task.cancel();
                }
            }
            this.scheduledTasks.clear();
        }
        this.registrar.destroy();
    }

}

package com.pkyou.Sample.annotations;

import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.scheduling.Trigger;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor;
import org.springframework.scheduling.annotation.SchedulingConfiguration;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;

import java.lang.annotation.*;
import java.util.concurrent.Executor;
 /**
 * @author luzh32717
 * @version 1.0
 * @date 2020/12/27 17:20
 * @see EnabledSchedule
 * @see EnabledSchedulingConfiguration
 * @see SchedulingConfigurer
 * @see ScheduledTaskRegistrar
 * @see Trigger
 * @see ScheduledAnnotationBeanPostProcessor
 */

@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
@Import(EnabledSchedulingConfiguration.class)
@Documented
public @interface EnableMyScheduling {
}

package com.pkyou.Sample.annotations;

import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Role;
import org.springframework.scheduling.annotation.ScheduledAnnotationBeanPostProcessor;
import org.springframework.scheduling.config.TaskManagementConfigUtils;

/**
 * @author luzh32717
 * @version 1.0
 * @date 2020/12/27 17:22
 */
@Configuration
@Role(BeanDefinition.ROLE_INFRASTRUCTURE)
public class EnabledSchedulingConfiguration {

    @Bean
    @Role(BeanDefinition.ROLE_INFRASTRUCTURE)
    public EnabledScheduledAnnotationBeanPostProcessor scheduledAnnotationProcessor() {
        return new EnabledScheduledAnnotationBeanPostProcessor();
    }
}

SpringBoot版本

不同版本的spring可能@Scheduled的实现有一丢丢出入
<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.5.8.RELEASE</version>
</parent>

本文地址：https://blog.csdn.net/HengTian_real/article/details/112251625