1:實現觸發器,最大的問題是jar包的處理(*.jar定時jar和sourcecodesource code):
此處,最關鍵的jar爲第二個,名字最長。
maven依賴:
<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:觸發器在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>
<!-- 監聽spring上下文容器 -->
<listener>
<listener-class>
org.springframework.web.context.ContextLoaderListener
</listener-class>
</listener>
<!-- 加載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需要攔截的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"?>
<beans
xmlns="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/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">
<!-- springmvc配置 -->
<!-- 通過component-scan讓spring掃描package下的所有類,讓spring的註解生效-->
<context:component-scan base-package="com.tsxs"></context:component-scan>
<!-- 配置springmvc的視圖渲染器,讓其前綴爲:/ 後綴爲: .jsp 將視圖渲染到 /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:定時任務配置文件
<?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"此兩個值可以不配置 -->
<description>Quartz Job Setting</description>
<!-- A.配置調度的任務對應bean的id和自定義class-->
<bean id="myQuartz" class="com.tsxs.tools.Quartz" />
<!-- B.配置調度任務對應的bean的id和執行的方法,作業不併發調度-->
<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.配置調度任務執行的觸發的時間-->
<bean id="myTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
<property name="jobDetail" ref="myDetail" />
<property name="cronExpression">
<!-- 每分鐘的第3秒執行任務調度 -->
<value>3 * * * * ?</value>
</property>
</bean>
<!-- D.Quartz的調度工廠,調度工廠只能有一個,多個調度任務在list中添加 -->
<bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
<property name="triggers">
<list>
<!-- 所有的調度列表-->
<ref bean="myTrigger" />
<!-- <ref bean="myTrigger1" />
<ref bean="myTrigger2" />
對應的bean配置:id="myDetail1" 和 id="myTrigger2" 可以對應的並行多配置-對應執行JavaBean和執行時間(各自觸發time)
-->
</list>
</property>
</bean>
</beans>
注:時間配置:可以看quartz配置或者網絡搜索“quartz定時配置”
5:定時任務執行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{
//此處可以不實現Job接口的execute方法
// private Date date;
/**
* 定時任務,執行方法
* */
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:運行結果:
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:定時任務執行JavaBean可以不實現Job接口的execute方法
②:在定時任務配置中:設置default-lazy-init="true",否則定時任務不觸發,如果不明確指明default-lazy-init的值,默認是false
③:在定時任務配置中:設置default-autowire="byName"的屬性,可能導致後臺會報org.springframework.beans.factory.BeanCreationException錯誤(此時,就不能通過Bean名稱自動注入,必須通過明確引用注入)