Spring的quartz定时器重复执行二次的问题解决
Posted Alamps 沁园春
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Spring的quartz定时器同一时刻重复执行二次的问题解决 最近用Spring的quartz定时器的时候，发现到时间后，任务总是重复执行两次，在tomcat或jboss下都如此。 打印出他们的hashcode，发现是不一样的，也就是说，在web容器启动的时候，重复启了两个quartz线程。 研究下来发现quartz确实会加载两次： 第一次：web容器启动的时候，读取applicationContext.xml文件时，会加载一次。 第二次：Spring本身会加载applicationContext.xml一次。 而我的quartz配置就是写在applicationContext.xml文件里的。 解决办法很简单 先把quartz配置信息提取出来，单独存成一个文件，比如applicationContext-quartz.xml 然后修改web.xml，让web容器启动时，可以加载该文件 这样quartz只会在web容器启动时加载一次，Spring不会再加载了。 web.xml配置如下： <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/classes/applicationContext.xml,/WEB-INF/classes/applicationContext-timertask.xml</param-value> </context-param> <!-- 开启监听 --> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> 把定时器的配置单独写成一个配置文件，在web容器启动的时候只加载一次 这个问题在Spring的TimerTask定时器下也会出现，解决方法也是如此，希望对各位大侠有所帮助 ----------------------------------------------------------------------------------------------------------------------------参考以上。----------------------------------------------------------- spring-scheduler.xml: <?xmlversion="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:jdbc="http://www.springframework.org/schema/jdbc" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:jpa="http://www.springframework.org/schema/data/jpa" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd" default-lazy-init="false"> <!-- 任务管理器 --> <beans> <!-- 要调用的工作类 --> <bean id="quartzJob" class="com.xinwei.util.UpdateCurrentValueTask"></bean> <!-- 定义调用对象和调用对象的方法 多个任务定义多个--> <bean id="jobtask2" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean"> <!-- 调用的类 --> <property name="targetObject"> <ref bean="quartzJob" /> </property> <!-- 调用类中的方法 --> <property name="targetMethod"> <value>doTask</value> </property> </bean> <!-- 定义触发时间 --> <bean id="doTime2" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean"> <property name="jobDetail"> <ref bean="jobtask2" /> </property> <!-- cron表达式 每天24:00运行一次 --> <property name="cronExpression" value="0 0 0 * * ?" /> </bean> <!-- 总管理类 如果将lazy-init=‘false‘那么容器启动就会执行调度程序 --> <bean id="startQuertz" lazy-init="false" autowire="no" class="org.springframework.scheduling.quartz.SchedulerFactoryBean"> <property name="triggers"> <list> <ref bean="doTime2"/> </list> </property> </bean> </beans> </beans> web.xml.. <?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5"> <display-name>security</display-name> <context-param> <param-name>contextConfigLocation</param-name> <param-value> classpath*:/applicationContext.xml, classpath*:/applicationContext-shiro.xml, classpath*:/spring-scheduler.xml </param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- 主要注册request，在普通类中获取request对象 --> <listener> <listener-class>org.springframework.web.context.request.RequestContextListener</listener-class> </listener> <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> <!-- 过滤参数，将前台传输的参数request. page.去掉 --> <filter> <filter-name>ParameterFilter</filter-name> <filter-class>com.xinwei.filter.ParameterFilter</filter-class> <init-param> <param-name>blackListURL</param-name> <!-- 配置黑名单url 表示不走过滤器的url order：1 --> <param-value> /js/** /css/** /styles/** /images/** /plugins/** /fonts/** /login/timeout /logout /views/** </param-value> </init-param> <init-param> <param-name>whiteListURL</param-name> <!-- 配置白名单url 表示走过滤器的url order：2--> <param-value> /** </param-value> </init-param> </filter> <filter-mapping> <filter-name>ParameterFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- pagination filter --> <filter> <filter-name>PageFilter</filter-name> <filter-class>com.xinwei.filter.PageFilter</filter-class> <init-param> <param-name>blackListURL</param-name> <!-- 配置黑名单url 表示不走过滤器的url order：1 --> <param-value></param-value> </init-param> <init-param> <param-name>whiteListURL</param-name> <!-- 配置白名单url 表示走过滤器的url order：2--> <param-value> /**/list </param-value> </init-param> </filter> <filter-mapping> <filter-name>PageFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- <filter> <filter-name>openEntityManagerInViewFilter</filter-name> <filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class> </filter> <filter-mapping> <filter-name>openEntityManagerInViewFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> --> <filter> <filter-name>shiroFilter</filter-name> <filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class> <init-param> <param-name>targetFilterLifecycle</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>shiroFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <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> <init-param> <param-name>dispatchOptionsRequest</param-name> <param-value>true</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> <servlet> <servlet-name>hessianServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:/server/hessian-server.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>hessianServlet</servlet-name> <url-pattern>/hessian/*</url-pattern> </servlet-mapping> <session-config> <session-timeout>30</session-timeout> </session-config> <error-page> <exception-type>java.lang.Throwable</exception-type> <location>/WEB-INF/views/error/500.jsp</location> </error-page> <error-page> <error-code>500</error-code> <location>/WEB-INF/views/error/500.jsp</location> </error-page> <error-page> <error-code>404</error-code> <location>/WEB-INF/views/error/404.jsp</location> </error-page> <error-page> <error-code>403</error-code> <location>/WEB-INF/views/error/403.jsp</location> </error-page> </web-app>
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