使用spring @Scheduled 注解执行定时任务

以前框架使用quartz框架执行定时调度问题、

老大说这配置太麻烦、每个调度都需要多加在spring的配置中、

能不能减少配置的量从而提高开发效率、

最近看了看spring的 scheduled的使用注解的方式进行调度、

感觉很方便、起码配置的东西少了很多、

所以留下来以备忘了、

首先要配置我们的spring.xml

xmlns 多加下面的内容、

xmlns:task="http://www.springframework.org/schema/task"

然后xsi:schemaLocation多加下面的内容、

http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd

最后是我们的task任务扫描注解

<task:annotation-driven/>

我的配置扫描位置是：

<context:annotation-config/>
<bean class="org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor"/>
<context:component-scan base-package="com.test"/>

扫描的是com.test这样的包下的内容、

下面需要接口和实现（我的这几个java文件都是com.test的包下的、）

<ol style="border: none; background-color: #ffffff; color: #5c5c5c; margin-bottom: 1px !important; margin-left: 45px !important;" class="dp-j"><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; color: inherit; line-height: 20px; margin-bottom: 0px !important; margin-left: 0px !important; padding-right: 3px !important; padding-left: 10px !important;" class="alt"><span style="color:black;margin: 0px; padding: 0px; border: none; background-color: inherit;"><span class="keyword" style="color:#006699;margin: 0px; padding: 0px; border: none; background-color: inherit; font-weight: bold;">public</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;"> </span><span class="keyword" style="color:#006699;margin: 0px; padding: 0px; border: none; background-color: inherit; font-weight: bold;">interface</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;"> IMyTestService {  </span></span></li><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; background-color: #f8f8f8; line-height: 20px; margin-bottom: 0px !important; margin-left: 0px !important; padding-right: 3px !important; padding-left: 10px !important;"><span style="color:black;margin: 0px; padding: 0px; border: none; background-color: inherit;">       <span class="keyword" style="color:#006699;margin: 0px; padding: 0px; border: none; background-color: inherit; font-weight: bold;">public</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;"> </span><span class="keyword" style="color:#006699;margin: 0px; padding: 0px; border: none; background-color: inherit; font-weight: bold;">void</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;"> myTest();  </span></span></li><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; color: inherit; line-height: 20px; margin-bottom: 0px !important; margin-left: 0px !important; padding-right: 3px !important; padding-left: 10px !important;" class="alt"><span style="color:black;margin: 0px; padding: 0px; border: none; background-color: inherit;">} 
</span></li></ol><ol style="border: none; background-color: #ffffff; color: #5c5c5c; margin-bottom: 1px !important; margin-left: 45px !important;" class="dp-j"><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; color: inherit; line-height: 20px; margin-bottom: 0px !important; margin-left: 0px !important; padding-right: 3px !important; padding-left: 10px !important;" class="alt"><span style="color:black;margin: 0px; padding: 0px; border: none; background-color: inherit;"><span class="annotation" style="color:#646464;margin: 0px; padding: 0px; border: none; background-color: inherit;">@Component</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;">  </span><span class="comment" style="color:#008200;margin: 0px; padding: 0px; border: none; background-color: inherit;">//import org.springframework.stereotype.Component;</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;">  </span></span></li><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; background-color: #f8f8f8; line-height: 20px; margin-bottom: 0px !important; margin-left: 0px !important; padding-right: 3px !important; padding-left: 10px !important;"><span style="color:black;margin: 0px; padding: 0px; border: none; background-color: inherit;"><span class="keyword" style="color:#006699;margin: 0px; padding: 0px; border: none; background-color: inherit; font-weight: bold;">public</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;"> </span><span class="keyword" style="color:#006699;margin: 0px; padding: 0px; border: none; background-color: inherit; font-weight: bold;">class</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;"> MyTestServiceImpl  </span><span class="keyword" style="color:#006699;margin: 0px; padding: 0px; border: none; background-color: inherit; font-weight: bold;">implements</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;"> IMyTestService {  </span></span></li><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; color: inherit; line-height: 20px; margin-bottom: 0px !important; margin-left: 0px !important; padding-right: 3px !important; padding-left: 10px !important;" class="alt"><span style="color:black;margin: 0px; padding: 0px; border: none; background-color: inherit;">      <span class="annotation" style="color:#646464;margin: 0px; padding: 0px; border: none; background-color: inherit;">@Scheduled</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;">(cron=</span><span class="string" style="color:blue;margin: 0px; padding: 0px; border: none; background-color: inherit;">"0/5 * *  * * ? "</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;">)   </span><span class="comment" style="color:#008200;margin: 0px; padding: 0px; border: none; background-color: inherit;">//每5秒执行一次</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;">  </span></span></li><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; background-color: #f8f8f8; line-height: 20px; margin-bottom: 0px !important; margin-left: 0px !important; padding-right: 3px !important; padding-left: 10px !important;"><span style="color:black;margin: 0px; padding: 0px; border: none; background-color: inherit;">      <span class="annotation" style="color:#646464;margin: 0px; padding: 0px; border: none; background-color: inherit;">@Override</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;">  </span></span></li><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; color: inherit; line-height: 20px; margin-bottom: 0px !important; margin-left: 0px !important; padding-right: 3px !important; padding-left: 10px !important;" class="alt"><span style="color:black;margin: 0px; padding: 0px; border: none; background-color: inherit;">      <span class="keyword" style="color:#006699;margin: 0px; padding: 0px; border: none; background-color: inherit; font-weight: bold;">public</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;"> </span><span class="keyword" style="color:#006699;margin: 0px; padding: 0px; border: none; background-color: inherit; font-weight: bold;">void</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;"> myTest(){  </span></span></li><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; background-color: #f8f8f8; line-height: 20px; margin-bottom: 0px !important; margin-left: 0px !important; padding-right: 3px !important; padding-left: 10px !important;"><span style="color:black;margin: 0px; padding: 0px; border: none; background-color: inherit;">            System.out.println(<span class="string" style="color:blue;margin: 0px; padding: 0px; border: none; background-color: inherit;">"进入测试"</span><span style="margin: 0px; padding: 0px; border: none; background-color: inherit;">);  </span></span></li><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; color: inherit; line-height: 20px; margin-bottom: 0px !important; margin-left: 0px !important; padding-right: 3px !important; padding-left: 10px !important;" class="alt"><span style="color:black;margin: 0px; padding: 0px; border: none; background-color: inherit;">      }  </span></li><li style="border-style: none none none solid; border-left-width: 3px; border-left-color: #6ce26c; background-color: #f8f8f8; line-height: 20px; margin-bottom: 0px !important; margin-left: 0px !important; padding-right: 3px !important; padding-left: 10px !important;"><span style="color:black;margin: 0px; padding: 0px; border: none; background-color: inherit;">} 
</span></li></ol>

执行后控制台就会打印出 进入测试 了

需要注意的几点：

1、spring的@Scheduled注解 需要写在实现上、

2、 定时器的任务方法不能有返回值（如果有返回值，spring初始化的时候会告诉你有个错误、需要设定一个proxytargetclass的某个值为true、具体就去百度google吧）

3、实现类上要有组件的注解@Component

剩下的就是corn表达式了、具体使用以及参数请百度google、

下面只例出几个式子

CRON表达式 含义

"0 0 12 * * ?" 每天中午十二点触发

"0 15 10 ? * *" 每天早上10：15触发

"0 15 10 * * ?" 每天早上10：15触发

"0 15 10 * * ? *" 每天早上10：15触发

"0 15 10 * * ? 2005" 2005年的每天早上10：15触发

"0 * 14 * * ?" 每天从下午2点开始到2点59分每分钟一次触发

"0 0/5 14 * * ?" 每天从下午2点开始到2：55分结束每5分钟一次触发

"0 0/5 14,18 * * ?" 每天的下午2点至2：55和6点至6点55分两个时间段内每5分钟一次触发

"0 0-5 14 * * ?" 每天14:00至14:05每分钟一次触发

"0 10,44 14 ? 3 WED" 三月的每周三的14：10和14：44触发

"0 15 10 ? * MON-FRI" 每个周一、周二、周三、周四、周五的10：15触发