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1:实现触发器,最大的问题是jar包的处理(*.jar定时jar和sourcecodesource code):
此处,最关键的jar为第二个,名字最长。
maven依赖:
<dependency><groupId>org.apache.servicemix.bundles</groupId><artifactId>org.apache.servicemix.bundles.spring-context-support</artifactId><version>4.0.7.RELEASE_2</version></dependency><dependency><groupId>org.quartz-scheduler</groupId><artifactId>quartz</artifactId><version>1.8.6</version></dependency>
2:触发器在web.xml中配置:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"id="WebApp_ID" version="3.0"><display-name>webdemo1</display-name><!-- 监听spring上下文容器 --><listener><listener-class>org.springframework.web.context.ContextLoaderListener </listener-class> </listener><!-- 加载spring的xml配置文件到spring的上下文容器中 --><context-param><param-name>contextConfigLocation</param-name><param-value>classpath*:applicationContext-*.xml</param-value></context-param><!-- 配置springmvc DispatcherServlet --><servlet><servlet-name>mvc</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/springmvc.xml</param-value></init-param><load-on-startup>1</load-on-startup></servlet><!-- 配置DispatcherServlet需要拦截的url --><servlet-mapping><servlet-name>mvc</servlet-name><url-pattern>*.html</url-pattern></servlet-mapping><welcome-file-list><welcome-file>index.html</welcome-file><welcome-file>index.htm</welcome-file><welcome-file>index.jsp</welcome-file><welcome-file>default.html</welcome-file><welcome-file>default.htm</welcome-file><welcome-file>default.jsp</welcome-file></welcome-file-list>
</web-app>
3:springmvc的配置:
<?xml version="1.0" encoding="UTF-8"?>
<beansxmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-3.0.xsdhttp://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd"><!-- springmvc配置 --><!-- 通过component-scan让spring扫描package下的所有类,让spring的注解生效--><context:component-scan base-package="com.tsxs"></context:component-scan><!-- 配置springmvc的视图渲染器,让其前缀为:/ 后缀为: .jsp 将视图渲染到 /views/<method返回值>.jsp中 --><bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"><property name="prefix" value="/WEB-INF/views/"></property><property name="suffix" value=".jsp"></property></bean>
</beans>
4:定时任务配置文件
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd"default-autowire="byName" default-lazy-init="false"><!-- default-autowire="byName" default-lazy-init="false"此两个值可以不配置 --><description>Quartz Job Setting</description><!-- A.配置调度的任务对应bean的id和自定义class--><bean id="myQuartz" class="com.tsxs.tools.Quartz" /><!-- B.配置调度任务对应的bean的id和执行的方法,作业不并发调度--><bean id="myDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean"><property name="targetObject" ref="myQuartz" /><property name="targetMethod" value="tips" /><property name="concurrent" value="false" /></bean><!-- C.配置调度任务执行的触发的时间--><bean id="myTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean"><property name="jobDetail" ref="myDetail" /><property name="cronExpression"><!-- 每分钟的第3秒执行任务调度 --><value>3 * * * * ?</value></property></bean><!-- D.Quartz的调度工厂,调度工厂只能有一个,多个调度任务在list中添加 --><bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean"><property name="triggers"><list><!-- 所有的调度列表--><ref bean="myTrigger" />
<!-- <ref bean="myTrigger1" /><ref bean="myTrigger2" />对应的bean配置:id="myDetail1" 和 id="myTrigger2" 可以对应的并行多配置-对应执行JavaBean和执行时间(各自触发time)--></list></property></bean>
</beans>
注:时间配置:可以看quartz配置或者网络搜索“quartz定时配置”
5:定时任务执行JavaBean:
package com.tsxs.tools;import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;public class Quartz {
// public class Quartz implements Job{
//此处可以不实现Job接口的execute方法
// private Date date;/*** 定时任务,执行方法* */public void tips(){String time = new SimpleDateFormat("MMM d,yyyy KK:mm:ss a",Locale.ENGLISH).format(System.currentTimeMillis());System.out.println("time:"+time);}// @Override
// public void execute(JobExecutionContext context) throws JobExecutionException {
// date = context.getFireTime();
// }
}
6:运行结果:
time:Jun 24,2015 00:05:03 PM
time:Jun 24,2015 00:06:03 PM
time:Jun 24,2015 00:07:03 PM
time:Jun 24,2015 00:08:03 PM
time:Jun 24,2015 00:09:03 PM
注:
①:定时任务执行JavaBean可以不实现Job接口的execute方法
②:在定时任务配置中:设置default-lazy-init="true",否则定时任务不触发,如果不明确指明default-lazy-init的值,默认是false
③:在定时任务配置中:设置default-autowire="byName"的属性,可能导致后台会报org.springframework.beans.factory.BeanCreationException错误(此时,就不能通过Bean名称自动注入,必须通过明确引用注入)
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