论坛站务软件水平考试华为认证计算机等级PMP认证思科认证Photoshop3DMAX编程语言移动开发系统运维产品运营淘宝营销办公软件Ps修图云计算大数据摄影就业

<p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 14px; font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;在我们的项目开发过程中，经常需要定时任务来帮助我们来做一些内容，springboot默认已经帮我们实行了，只需要添加相应的注解就可以实现。</p><h2 style="border: 0px; margin: -9px 0px 20px; padding: 0px; font-size: 24px; font-weight: normal; font-stretch: normal; line-height: 36px; font-family: &quot;Microsoft YaHei&quot;, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1、pom包配置</h2><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 14px; font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;pom包里面只需要引入springboot starter包即可</p><p style="text-align: center"><img src="/Public/forum/ueditor/image/20170801/1501550409882016.jpg" alt="1501550409882016.jpg"/></p><h2 style="border: 0px; margin: -9px 0px 20px; padding: 0px; font-size: 24px; font-weight: normal; font-stretch: normal; line-height: 36px; font-family: &quot;Microsoft YaHei&quot;, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp; 2、启动类启用定时</h2><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 14px; font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;在启动类上面加上@EnableScheduling即可开启定时</p><p style="text-align: center"><img src="/Public/forum/ueditor/image/20170801/1501550443695184.jpg" alt="1501550443695184.jpg"/></p><h2 style="border: 0px; margin: -9px 0px 20px; padding: 0px; font-size: 24px; font-weight: normal; font-stretch: normal; line-height: 36px; font-family: &quot;Microsoft YaHei&quot;, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3、创建定时任务实现类</h2><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 14px; font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><strong style="border: 0px; margin: 0px; padding: 0px;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;定时任务1：</strong></p><p style="text-align: center"><img src="/Public/forum/ueditor/image/20170801/1501550492435724.jpg" alt="1501550492435724.jpg"/></p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 14px; font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<strong style="border: 0px; margin: 0px; padding: 0px; font-size: 14px; font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">定时任务2：</strong></p><p style="text-align: center"><img src="/Public/forum/ueditor/image/20170801/1501550541866967.jpg" alt="1501550541866967.jpg"/></p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 14px; font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span style="font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size: 14px; background-color: rgb(255, 255, 255);">结果如下：</span></p><p style="text-align: center"><img src="/Public/forum/ueditor/image/20170801/1501550574307096.jpg" alt="1501550574307096.jpg"/></p><h2 style="border: 0px; margin: -9px 0px 20px; padding: 0px; font-size: 24px; font-weight: normal; font-stretch: normal; line-height: 36px; font-family: &quot;Microsoft YaHei&quot;, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp; 参数说明</h2><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 14px; font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;@Scheduled 参数可以接受两种定时的设置，一种是我们常用的cron=”*/6 * * * * ?”,一种是 fixedRate = 6000，两种都表示每隔六秒打印一下内容。</p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 14px; font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><strong style="border: 0px; margin: 0px; padding: 0px;">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;fixedRate 说明</strong></p><p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.@Scheduled(fixedRate = 6000) ：上一次开始执行时间点之后6秒再执行；</p><p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2.@Scheduled(fixedDelay = 6000) ：上一次执行完毕时间点之后6秒再执行；</p><p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3.@Scheduled(initialDelay=1000, fixedRate=6000) ：第一次延迟1秒后执行，之后按fixedRate的规则每6秒执行一次。</p><p style="border: 0px; margin-top: 0px; margin-bottom: 20px; padding: 0px; font-size: 14px; font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; white-space: normal; background-color: rgb(255, 255, 255);"><span style="font-family: &quot;Microsoft YaHei&quot;, 宋体, &quot;Myriad Pro&quot;, Lato, &quot;Helvetica Neue&quot;, Helvetica, Arial, sans-serif; font-size: 14px; background-color: rgb(255, 255, 255);"></span></p>

论坛站务软件水平考试华为认证计算机等级PMP认证思科认证Photoshop3DMAX编程语言移动开发系统运维产品运营淘宝营销办公软件Ps修图云计算大数据摄影就业