How to integrate scheduled tasks and email tasks in SpringBoot
定时任务
项目开发中经常需要执行一些定时任务,比如需要在每天凌晨时候,分析一次前一天的日志信息。Spring为我们提供了异步执行任务调度的方式
提供 :
TaskExecutor 任务调度这
TaskScheduler 任务执行者 两个注解:
@EnableScheduling// 开启定时任务功能
@Scheduled //表示什么时候执行
cron表达式:
字段 允许值 允许的特殊字符
秒 0-59 - * /
分 0-59 - * /
小时 0-23 - * /
日期 1-12或JAN-DEC - * ? / L W C 月份 0-59 - * /
星期 1-7或SUN-SAT - * ? / L C #
cron表达式例子:
(0)0/20 * * * * ? 表示每20秒 调整任务 (1)0 0 2 1 * ? 表示在每月的1日的凌晨2点调整任务 (2)0 15 10 ? * MON-FRI 表示周一到周五每天上午10:15执行作业 (3)0 15 10 ? 6L 2002-2006 表示2002-2006年的每个月的最后一个星期五上午10:15执行作 (4)0 0 10,14,16 * * ? 每天上午10点,下午2点,4点 (5)0 0/30 9-17 * * ? 朝九晚五工作时间内每半小时 (6)0 0 12 ? * WED 表示每个星期三中午12点 (7)0 0 12 * * ? 每天中午12点触发 (8)0 15 10 ? * * 每天上午10:15触发 (9)0 15 10 * * ? 每天上午10:15触发 (10)0 15 10 * * ? * 每天上午10:15触发 (11)0 15 10 * * ? 2005 2005年的每天上午10:15触发 (12)0 * 14 * * ? 在每天下午2点到下午2:59期间的每1分钟触发 (13)0 0/5 14 * * ? 在每天下午2点到下午2:55期间的每5分钟触发 (14)0 0/5 14,18 * * ? 在每天下午2点到2:55期间和下午6点到6:55期间的每5分钟触发 (15)0 0-5 14 * * ? 在每天下午2点到下午2:05期间的每1分钟触发 (16)0 10,44 14 ? 3 WED 每年三月的星期三的下午2:10和2:44触发 (17)0 15 10 ? * MON-FRI 周一至周五的上午10:15触发 (18)0 15 10 15 * ? 每月15日上午10:15触发 (19)0 15 10 L * ? 每月最后一日的上午10:15触发 (20)0 15 10 ? * 6L 每月的最后一个星期五上午10:15触发 (21)0 15 10 ? * 6L 2002-2005 2002年至2005年的每月的最后一个星期五上午10:15触发 (22)0 15 10 ? * 6#3 每月的第三个星期五上午10:15触发
测试
@Service public class task { // 秒 分 时 日 月 周几 @Scheduled(cron = "0 17 18 * * ?") public void test(){ System.out.println("这个是定时任务,现在的时间是:"+new Date()); } }
邮件任务
邮件发送需要引入spring-boot-starter-mail
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-mail</artifactId> </dependency>
定义MailProperties内容,配置在application.yml中
spring.mail.username=wangmeng@XXX.com spring.mail.password=EXHFOVQXOTZUKWSL spring.mail.host=smtp.163.com #开启加密验证 spring.mail.properties.mail.smtp.ssl.enable=true
测试邮件发送
@Autowired private JavaMailSenderImpl javaMailSender; @Test void contextLoads() { SimpleMailMessage simpleMailMessage=new SimpleMailMessage(); simpleMailMessage.setSubject("这是SpringBoot集成mail,发送的第一个邮件"); simpleMailMessage.setText("你好,你好,你好,你好!"); simpleMailMessage.setTo("mengwangq@XXXX.com","jhwucc@XXX.com"); simpleMailMessage.setFrom("wangmeng@XXX.com"); javaMailSender.send(simpleMailMessage); } @Test void Test() throws Exception { MimeMessage mimeMessage = javaMailSender.createMimeMessage(); MimeMessageHelper helperMessage = new MimeMessageHelper(mimeMessage, true,"utf-8"); helperMessage.setSubject("今日工作进展"); helperMessage.setText("<p style='color:red'>今日工作汇报,详情请查看附件</p>"); // 附件 helperMessage.addAttachment("今日工作进展.docx", new File("D:\\usr\\local\\工作日报.docx")); helperMessage.setTo("mengwangq@XXXX.com"); helperMessage.setFrom("wangmeng@XXXXX.com"); javaMailSender.send(mimeMessage); }
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