一、spring 定时任务

spring 定时任务 ,最好使用quartz 实现。下面我以spring4为例

 

二、实战（默认）

1、pom配置

             
                 
      
       org.quartz-scheduler
                  
      
       quartz
                  
      
       1.8.4
              
     

2、bean 配置

3、定时java类, 继承 QuartzJobBean

package com.yuanmeng.spring;import org.quartz.JobExecutionContext;import org.quartz.JobExecutionException;import org.springframework.scheduling.quartz.QuartzJobBean;public class TaskDemo extends QuartzJobBean {        private static int i = 0;    @Override    protected void executeInternal(JobExecutionContext context) throws JobExecutionException {                                System.out.println("--------- begin ---------");                System.out.println(" i = " + i++);                        System.out.println("--------- end ---------");    }    }

4、启动

package com.yuanmeng.spring;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import org.springframework.scheduling.quartz.JobDetailBean;public class Client {    public static void main(String[] args) {        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:spring/spring-timetask.xml");        org.springframework.scheduling.quartz.JobDetailBean bean = (JobDetailBean) ac.getBean("myTaskJob");                System.out.println(bean != null);    }}

5、看下结果

--------- begin --------- i = 0--------- end ------------------ begin --------- i = 1--------- end ------------------ begin --------- i = 2--------- end ------------------ begin --------- i = 3--------- end ------------------ begin --------- i = 4--------- end ------------------ begin --------- i = 5--------- end ------------------ begin --------- i = 6--------- end ------------------ begin --------- i = 7--------- end ------------------ begin --------- i = 8--------- end ------------------ begin --------- i = 9--------- end ------------------ begin --------- i = 10--------- end ------------------ begin --------- i = 11--------- end ------------------ begin --------- i = 12--------- end ---------

 

三、实战（不继承）

1、bean 配置

 

 

2、自定义任务类

package com.yuanmeng.spring;public class TaskDemo2 {    private static int i = 0;    public void doIt() {        System.out.println("---------doIt begin ---------");        System.out.println(" i = " + i++);        System.out.println("---------doIt end ---------");    }}

 

3、启动

ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:spring/spring-timetask2.xml");

 

4、结果

---------doIt begin --------- i = 0---------doIt end ------------------doIt begin --------- i = 1---------doIt end ------------------doIt begin --------- i = 2---------doIt end ------------------doIt begin --------- i = 3---------doIt end ------------------doIt begin --------- i = 4---------doIt end ------------------doIt begin ---------