SpringBoot 創建定時任務

一、在 springboot 項目啓動類上增加註解 @EnableScheduling

package io.huihai;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.support.SpringBootServletInitializer;
import org.springframework.scheduling.annotation.EnableScheduling;

@EnableScheduling
@SpringBootApplication
public class HuihainApplications extends SpringBootServletInitializer {
    

    public static void main(String[] args) {
        SpringApplication.run(HuihainApplications.class, args);
    }

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
        return application.sources(HuihainApplications.class);
    }
}

二、創建定時任務對象

package io.huihai.modules.book.issue.scheduled;

import io.huihai.modules.book.issue.dao.BookIssueDao;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;

/**
 * @author 
 * @email [email protected]
 * @Date 
 */

@Configuration
@EnableScheduling
public class FreeNumberResetsScheduled {

    private Logger log = LoggerFactory.getLogger(getClass());

    /**
     * 是否開啓定時任務，true開啓，false關閉
     */
    @Value("${issue.open}")
    private boolean open;

    /**
     * 免費次數
     */
    @Value("${issue.freeNumber}")
    private Integer freeNumber;

    @Autowired
    private BookIssueDao bookIssueDao;

    /**
     * 每月1號 0:00:00 執行
     */
    @Scheduled(cron = "0 0 0 1 * ?")
    public void FreeNumberResets() {
        if (open) {
            log.info("================= 啓動定時任務 【FreeNumberResets】 =================");
            try {
                bookIssueDao.freeNumberResets(freeNumber);
            } catch (Exception e) {
                e.printStackTrace();
                log.info("================= 【FreeNumberResets】 定時任務任務執行失敗！！！ =================");
            }
            log.info("================= 【FreeNumberResets】 定時任務執行完畢。重置所有普通會員免費次數爲: {} =================", freeNumber + "次。");
        } else {
            log.info("================= 【FreeNumberResets】 定時任務未開啓 =================");
        }
    }


}