quartz定时任务的简单使用

2022-11-18 11:48:18

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~~~~~~~~~~~~~~~~··

码农公寓

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