每个层级都有一个enable属性，默认为true，只有强制指定为false的时候才不会装载对应的任务调度方法。这里就是简单继承AbstractSchedulingConfigurer，实现从类路径加载配置的逻辑，定义JsonSchedulingConfigurer：
public class JsonSchedulingConfigurer extends AbstractSchedulingConfigurer { // 这里把默认的任务配置JSON文件放在CLASSPATH下的scheduling/tasks.json,可以通过配置项scheduling.json.config.location进行覆盖 @Value("${scheduling.json.config.location:scheduling/tasks.json}") private String location; @Autowired private ObjectMapper objectMapper; @Override protected List<InternalTaskProperties> loadTaskProperties() throws Exception { ClassPathResource resource = new ClassPathResource(location); String content = StreamUtils.copyToString(resource.getInputStream(), StandardCharsets.UTF_8); ScheduleTaskProperties properties = objectMapper.readValue(content, ScheduleTaskProperties.class); if (Boolean.FALSE.equals(properties.getEnable()) || null == properties.getTasks()) { return Lists.newArrayList(); } List<InternalTaskProperties> target = Lists.newArrayList(); for (ScheduleTasks tasks : properties.getTasks()) { if (null != tasks) { List<ScheduleTaskMethod> taskMethods = tasks.getTaskMethods(); if (null != taskMethods) { for (ScheduleTaskMethod taskMethod : taskMethods) { if (!Boolean.FALSE.equals(taskMethod.getEnable())) { if (ScheduleTaskType.CRON == taskMethod.getTaskType()) { target.add(CronTaskProperties.builder() .taskMethod(taskMethod.getTaskMethod()) .cronExpression(taskMethod.getCronExpression()) .timeZone(taskMethod.getTimeZone()) .taskDescription(taskMethod.getTaskDescription()) .taskHostKlass(tasks.getTaskKlass()) .build()); } if (ScheduleTaskType.FIXED_DELAY == taskMethod.getTaskType()) { target.add(FixedDelayTaskProperties.builder() .taskMethod(taskMethod.getTaskMethod()) .intervalMilliseconds(taskMethod.getIntervalMilliseconds()) .initialDelayMilliseconds(taskMethod.getInitialDelayMilliseconds()) .taskDescription(taskMethod.getTaskDescription()) .taskHostKlass(tasks.getTaskKlass()) .build()); } if (ScheduleTaskType.FIXED_RATE == taskMethod.getTaskType()) { target.add(FixedRateTaskProperties.builder() .taskMethod(taskMethod.getTaskMethod()) .intervalMilliseconds(taskMethod.getIntervalMilliseconds()) .initialDelayMilliseconds(taskMethod.getInitialDelayMilliseconds()) .taskDescription(taskMethod.getTaskDescription()) .taskHostKlass(tasks.getTaskKlass()) .build()); } } } } } } return target; } }添加一个配置类和任务类：
@Configuration public class SchedulingAutoConfiguration { @Bean public JsonSchedulingConfigurer jsonSchedulingConfigurer(){ return new JsonSchedulingConfigurer(); } } // club.throwable.schedule.Tasks @Slf4j @Component public class Tasks { public void processTask1() { log.info("processTask1触发.........."); } }启动SpringBoot应用，某次执行的部分日志如下：
2020-03-22 16:24:17.248 INFO 22836 --- [ main] c.t.s.AbstractSchedulingConfigurer : 装载FixedDelayTask[club.throwable.schedule.Tasks#processTask1()]成功,固定延迟间隔:5000 ms,初始延迟执行时间:0 ms,任务描述:processTask1任务 2020-03-22 16:24:22.275 INFO 22836 --- [pool-1-thread-1] club.throwable.schedule.Tasks : processTask1触发.......... 2020-03-22 16:24:27.277 INFO 22836 --- [pool-1-thread-1] club.throwable.schedule.Tasks : processTask1触发.......... 2020-03-22 16:24:32.279 INFO 22836 --- [pool-1-thread-1] club.throwable.schedule.Tasks : processTask1触发.......... ......