考勤打卡定时器Quartz

想制定一个定时任务，你只需要加入jar包，写一个定时方法。写一个配置文件，然后在web.xml中加载这个配置文件就可以。很简单

pom.xml

<dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
            <version>${quartz.version}</version>
        </dependency>
        <dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz-jobs</artifactId>
            <version>${quartz.version}</version>
</dependency>

定时任务

public class AttendCheckTask {

    @Autowired
    private AttendService attendService;

    public  void checkAttend(){
        attendService.checkAttend();
    }
}

配置文件spring-job.xml

<?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.xsd">

    <!--定时任务bean-->
    <bean id="taskJob" class="com.coder520.common.task.AttendCheckTask"/>
    <!--指定这个类和方法给一个工厂管理，concurrent的意思是不让相同的任务时间同时发生-->
    <bean id="jobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
        <property name="concurrent" value="false"/>
        <property name="targetObject" ref="taskJob"/>
        <property name="targetMethod" value="checkAttend"/>
    </bean>
    <!--指定一个表达式-->
    <bean id="attendCheck" class="org.springframework.scheduling.quartz.CronTriggerFactoryBean">
        <property name="jobDetail" ref="jobDetail"/>
        <property name="cronExpression">
            <value>0/5 * * * * ? *</value>
        </property>
    </bean>
    <!--指定一个触发器-->
    <bean id="scheduler" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
        <property name="triggers">
            <list>
                <ref bean="attendCheck"/>
            </list>
        </property>
    </bean>
</beans>

web.xml

用这样的方法使容器加载配置文件

 <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:spring-*.xml</param-value>
  </context-param>