quartz定时任务的简单使用

开发环境：

springmvc

quartz-2.2.3在官网下载的。

步骤：

1.首先在web.xml中加入以下代码：

<servlet>
     <servlet-name>QuartzInitializer</servlet-name>
     <servlet-class>org.quartz.ee.servlet.QuartzInitializerServlet</servlet-class>
     <init-param>
       <param-name>config-file</param-name>
       <param-value>/quartz.properties</param-value>
     </init-param>
     <init-param>
       <param-name>shutdown-on-unload</param-name>
       <param-value>true</param-value>
     </init-param>
     <load-on-startup>2</load-on-startup>
    </servlet>

2.在根目录下创建quartz.properties并添加如下代码

#============================================================================  
# Configure Main Scheduler Properties  
#============================================================================

# 实例名
org.quartz.scheduler.instanceName = QuartzScheduler 
# 实例ID
org.quartz.scheduler.instanceId = AUTO

#============================================================================
# Configure ThreadPool  
#============================================================================
org.quartz.threadPool.class = org.quartz.simpl.SimpleThreadPool
# 线程个数
org.quartz.threadPool.threadCount = 3
org.quartz.threadPool.threadPriority = 5

#============================================================================
# Configure JobStore  
#============================================================================
org.quartz.jobStore.misfireThreshold = 60000
org.quartz.jobStore.class = org.quartz.simpl.RAMJobStore

#============================================================================
# Configure Plugins 
#============================================================================
org.quartz.plugin.triggHistory.class = org.quartz.plugins.history.LoggingJobHistoryPlugin
# org.quartz.plugins.xml.JobInitializationPlugin是Quartz自带的插件，
# 默认时，这个插件会在 classpath 中搜索名为 quartz_jobs.xml 
# 的文件并从中加载 Job 和 Trigger 信息
# v1.8之前用JobInitializationPlugin
#org.quartz.plugin.jobInitializer.class = org.quartz.plugins.xml.JobInitializationPlugin
org.quartz.plugin.jobInitializer.class =org.quartz.plugins.xml.XMLSchedulingDataProcessorPlugin
org.quartz.plugin.jobInitializer.fileNames = quartz_jobs.xml
org.quartz.plugin.jobInitializer.failOnFileNotFound = true
org.quartz.plugin.jobInitializer.scanInterval =10
org.quartz.plugin.jobInitializer.wrapInUserTransaction = false

# 关闭quartz新版本检测功能
org.quartz.scheduler.skipUpdateCheck = true

3.在根目录下创建quartz_jobs.xml因为当加载quartz.properties的时候会寻找该文件，其实也就是任务清单

<?xml version="1.0" encoding="UTF-8"?>
<job-scheduling-data
    xmlns="http://www.quartz-scheduler.org/xml/JobSchedulingData" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.quartz-scheduler.org/xml/JobSchedulingData http://www.quartz-scheduler.org/xml/job_scheduling_data_1_8.xsd"
    version="1.8">

    <pre-processing-commands>
        <delete-jobs-in-group>*</delete-jobs-in-group> <!-- clear all jobs in scheduler -->
        <delete-triggers-in-group>*</delete-triggers-in-group><!-- clear all triggers 
            in scheduler -->
    </pre-processing-commands>

    <processing-directives>
        <overwrite-existing-data>true</overwrite-existing-data>
        <ignore-duplicates>false</ignore-duplicates>
    </processing-directives>

    <schedule>
        <job>
            <name>demo</name>
            <group>group1</group>
            <description>简单的quartz使用</description>
            <job-class>com.seegot.dbms.scheduled.Demo</job-class>  
        </job>
        <trigger>
            <cron>
                <name>trigger</name>
                <group>group1</group>
                <job-name>demo</job-name>
                <job-group>group1</job-group>
                <cron-expression>0/10 * * * * ?</cron-expression>
            </cron>
        </trigger>
    </schedule>
</job-scheduling-data>

4.创建一个调用类Demo

package com.seegot.dbms.scheduled;
 
import org.apache.log4j.Logger;   
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;

public class Demo implements Job{
    private static Logger log = Logger.getLogger(Demo.class);

    @Override
    public void execute(JobExecutionContext arg0) throws JobExecutionException {
        // TODO Auto-generated method stub
        log.info("进来了~~~~~~~~~~~~~~~~··");
    }   
     
}

结果如下：

2018-07-03 16:04:00,001 INFO  com.seegot.dbms.scheduled.Demo.execute(Demo.java:14) - 进来了~~~~~~~~~~~~~~~~··