springboot添加定时任务

• 首先，需要添加注解，@EnableScheduling
  

  @SpringBootApplication
  @EnableScheduling
  public class SpringbootVueLearningApplication {
  
      public static void main(String[] args) {
          SpringApplication.run(SpringbootVueLearningApplication.class, args);
      }
  
  }

• 其次，添加注解 @Service将类注入到springboot容器中，托管给springboot管理，并且添加注解 @Scheduled，添加定时时长

  @Service
  public class ImgSpiderImpl implements ImgSpider {
      
      //从0秒开始，每五秒执行一次；
      @Scheduled(cron = "0/5 * * * * *")
      @Override
      public void spider() throws IOException {
          String url = "https://pic.netbian.com/";
          CloseableHttpClient httpClient = HttpClients.createDefault();
          HttpPost httpPost = new HttpPost(url);
          CloseableHttpResponse response = httpClient.execute(httpPost);
          System.out.println(response);
      }
  }

  cron 语法可以自行百度，具体可以参考：传送门