項目ITP(五) spring4.0 整合 Quartz 實現任務調度


2014-05-16 22:51 by Jeff Lihtml

前言

  系列文章:[傳送門]java

  項目需求:web

    二維碼推送到一體機上,給學生簽到掃描用。而後須要的是 上課前20分鐘 ,幸虧在幫帶個人學長作 p2p 的時候,接觸過。天然 quartz 是首選。因此我就配置了下,搞了個小樣例給你們。spring

正文 

  spring4.0 整合 Quartz 實現任務調度。這是期末項目的最後一篇,剩下到暑假吧。數據庫

    Quartz 介紹

    Quartz is a full-featured, open source job scheduling service that can be integrated with, or used along side virtually any Java application - from the smallest stand-alone application to the largest e-commerce system. Quartz can be used to create simple or complex schedules for executing tens, hundreds, or even tens-of-thousands of jobs; api

    Quartz框架是一個全功能、開源的任務調度服務,能夠集成幾乎任何的java應用程序—從小的單片機系統到大型的電子商務系統。Quartz能夠執行上千上萬的任務調度。spring-mvc

 

   核心概念session

     Quartz核心的概念:scheduler任務調度、Job任務、Trigger觸發器、JobDetail任務細節mvc

     相關文檔:http://www.quartz-scheduler.org/documentation/quartz-2.2.x/quick-start
app

實戰 

  第一步 :spring、quartz 相應的jar包,添加到項目中(須要的call me)

    /WEB-INF/lib/quartz-2.2.1.jar

    以及spring的一些必要包

  

    第二步:web.xml中配置spring

複製代碼

<?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>wmuitp</display-name>
      
      <!--Spring WebApplicationContext上下文,稱爲父上下文(父容器)-->
      <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    
    <!--Srping
      <listener>  
        <listener-class>  
            org.springframework.web.context.request.RequestContextListener  
        </listener-class>  
    </listener> 
     -->
     
    <!--加載spring的配置文件 -->  
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:applicationContext.xml</param-value>
    </context-param>
    
    <!--Spring MVC 配置 DispatcherServlet-->
    <servlet>
        <servlet-name>springServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:spring-mvc.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>  
    <servlet-mapping>
        <servlet-name>springServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
    
    <!--filter配置,解決編碼問題 --> 
    <filter>
        <filter-name>encodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    <!--OpenSessionInViewFilter配置,解決延遲加載時Session會關閉的問題 -->  
    <filter>
        <filter-name>openSessionInViewFilter</filter-name>
        <filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>openSessionInViewFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
    
    <!-- session過時時間:  20-->
    <session-config>   
        <session-timeout>20</session-timeout>
    </session-config>
    
    <!-- 錯誤界面  -->
    <error-page>
        <exception-type>java.lang.Throwable</exception-type>
        <location>/WEB-INF/error/500.jsp</location>
    </error-page>
    <error-page>
        <error-code>500</error-code>
        <location>/WEB-INF/error/500.jsp</location>
    </error-page>
    <error-page>
        <error-code>404</error-code>
        <location>/WEB-INF/error/404.jsp</location>
    </error-page>
    <error-page>
        <error-code>400</error-code>
        <location>/WEB-INF/error/400.jsp</location>
    </error-page></web-app>

複製代碼

   #有些你不用的,就不要寫了。

 

    第三:在spring配置文件中配置quartz任務調度

    

複製代碼

<!--Quartz-->
            
    <!-- 集成方式:JobDetailFactoryBean,而且任務類須要繼承QuartzJobBean-->
    <!-- 定義jobDetail -->
    <bean id="jobDetail" class="org.springframework.scheduling.quartz.JobDetailFactoryBean">
        <!-- durability 表示任務完成以後是否依然保留到數據庫,默認false   -->
        <property name="durability" value="true" />  
        <!--     目標類  /wmuitp/src/test/SpringQuartz.java-->
        <property name="jobClass" value="test.SpringQuartzTest"></property>
        
           <!--  在這個例子中,jobDataAsMap沒有用,此目標類中接受的參數 ,若參數爲service,則能夠在此進行參數配置,相似struts2 -->
           <!--
        <property name="jobDataAsMap">  
            <map>  
                <entry key="service"><value>simple is the beat</value></entry>  
            </map>  
        </property>            -->
    </bean>
    
    <!-- 定義simpleTrigger觸發器 -->
    <!--     
    <bean id="simpleTrigger" class="org.springframework.scheduling.quartz.SimpleTriggerBean">
        <property name="jobDetail" ref="jobDetail"></property>
        <property name="repeatCount">
            <value>8</value>
        </property>
        <property name="repeatInterval">
            <value>1000</value>
        </property>
        <property name="startDelay">
            <value>4</value>
        </property>
    </bean> 
    -->
    
    <!-- 另外一種觸發器是CornTrigger -->
     <bean id="cornTrigger" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
       <property name="jobDetail" ref="jobDetail"/>
       <!-- 每一個10秒觸發 -->
       <property name="cronExpression" value="0/10 * * * * ?"/>
    </bean> 
    
    <!-- 定義核心調度器 -->
    <bean id="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
      <property name="triggers">
        <ref bean="cornTrigger"/>
      </property>
    </bean>

複製代碼

  #目標類
    <property name="jobClass" value="test.SpringQuartzTest"></property>
  
    

複製代碼

package test;import java.util.Date;import org.quartz.JobExecutionContext;import org.quartz.JobExecutionException;import org.springframework.scheduling.quartz.QuartzJobBean;public class SpringQuartzTest extends QuartzJobBean
{    /*業務實現*/
    public void work() {
        System.out.println("執行調度任務:"+new Date());
    }

    @Override    protected void executeInternal(JobExecutionContext arg0)            throws JobExecutionException {        this.work();
    }
}

複製代碼

#須要繼承QuartzJobBean

總結

  spring quartz

  

感謝及資源共享

    

    http://url.cn/RzETYu 加入個人羣

    

    路上走來一步一個腳印,但願你們和我一塊兒。

    感謝讀者!很喜歡大家給個人支持。若是支持,點個贊。

    知識來源: 《spring in action》 quartz api

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