Spring scheduled task implementation code in java

import org.apache.log4j.*;
public class TaskJob {
       public static Logger log = Logger
                     .getLogger(TaskJob.class);
       public void SayHello() {
              // TODO Auto-generated method stub
              try {
                     log.info("处理任务开始>........");
                     // 业务逻辑代码调用
                     System.out.println("时间[" + new java.util.Date().toLocaleString()
                                   + "]----->大家好啊！");
                     log.info("处理任务结束!");
              } catch (Exception e) {
                     log.error("处理任务出现异常", e);
              }
       }
}

2. Next, configure it in spring:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
    <bean name="taskJob" class="util.TaskJob" />
    <bean id="methodInvokingJobDetail" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">
       <property name="targetObject">
           <ref bean="taskJob" />
       </property>
       <property name="targetMethod">
           <value>SayHello</value>
       </property>
    </bean>
    <!-- 配置触发器 -->
    <bean id="cronTrigger" class="org.springframework.scheduling.quartz.CronTriggerBean">
        <!-- 这里不可以直接在属性jobDetail中引用taskJob，因为他要求的是一个jobDetail类型的对象，所以我们得通过MethodInvokingJobDetailFactoryBean来转一下 -->
       <property name="jobDetail">
           <ref bean="methodInvokingJobDetail" />
       </property>
       <!-- 每天的8点到21点每隔1分钟触发，具体说明见附录 -->
       <property name="cronExpression">
           <value>0 * 08-21 * * ?</value>
       </property>
    </bean>
    <bean class="org.springframework.scheduling.quartz.SchedulerFactoryBean">
       <!-- 添加触发器 -->
       <property name="triggers">
           <list>
              <ref local="cronTrigger" />
           </list>
       </property>
    </bean>
</beans>

3． To test the execution class, you can see the scheduled tasks running as long as you load the spring configuration file.

package util;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class TestApp {

public static void main(String[] args) {
    // TODO Auto-generated method stub
        System.out.println("加载spring配置文件....");
      ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
      System.out.println("加载配置文件完毕!");
//   ApplicationContext context2 = new ClassPathXmlApplicationContext("test/timerTask/quartzTimer.xml");
}
}

If you want to run it in a web project, you also need to add the following code to web. Characters

seconds 0-59, - * /

minutes 0-59, - * /
hours 0-23, - * /
dates 1-31, - * ? / L W C
Month 1-12 or JAN-DEC, - * /
Week 1-7 or SUN-SAT, - * ? / L C
#Year (optional) Leave blank, 1970-2099, - * /
Expression meaning
"0 0 12 * * ?" Triggered every day at 12 noon
"0 15 10 ? * *" Triggered every day at 10:15 am
"0 15 10 * * ?" Every morning Triggered at 10:15
"0 15 10 * * ? *" Triggered every day at 10:15 AM
"0 15 10 * * ? 2005" Triggered every day at 10:15 AM in 2005
"0 * 14 * * ?" Triggers every 1 minute from 2 pm to 2:59 pm every day
"0 0/5 14 * * ?" Triggers every 5 minutes from 2 pm to 2:55 pm every day
"0 0/5 14,18 * * ?" Triggers every 5 minutes from 2pm to 2:55pm and every 5 minutes from 6pm to 6:55pm
"0 0-5 14 * * ?" " Triggers every 1 minute from 2pm to 2:05pm every day
"0 10,44 14 ? 3 WED" Triggers every Wednesday in March at 2:10pm and 2:44pm
"0 15 10 ? * MON-FRI" Triggered at 10:15 AM from Monday to Friday
"0 15 10 15 * ?" Triggered at 10:15 AM on the 15th of every month
"0 15 10 L * ?" Every Triggered at 10:15 am on the last day of the month
"0 15 10 ? * 6L" Triggered at 10:15 am on the last Friday of the month
"0 15 10 ? * 6L 2002-2005" 2002 to 2005 Triggered at 10:15 am on the last Friday of each month of the year
"0 15 10 ? * 6#3" Triggered at 10:15 am on the third Friday of each month

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