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java 多线程——quartz 定时调度的例子

 java 多线程目录:

Java 多线程——基础知识

Java 多线程 —— synchronized关键字

java 多线程——一个定时调度的例子

java 多线程——quartz 定时调度的例子

 

 概述

第1部分 配置

第2部分 代码示例

 

第1部分 配置

有关quartz的api文档地址:Quartz Enterprise Job Scheduler 1.8.6 API

主要接口目录:

 

重点看下Job,Scheduler,Trigger,JobDetail几个:

代表任务的类继承Job接口,该接口只有唯一一个方法 execute;当一个任务的触发器启动时,相应的调度器scheduler会调用该任务。

quartz并不保存一个实际的Job类,而是通过允许你定义一个JobDetail取代。

Scheduler代表JobDetails和Triggers的登记表,Scheduler由SchedulerFactory产生。

 

quartz的配置文件quartzConfig.xml如下:

<?xml version="1.0" encoding="UTF-8"?><beans xmlns="http://www.springframework.org/schema/beans"    xmlns:security="http://www.springframework.org/schema/security"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"    xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx"    xmlns:context="http://www.springframework.org/schema/context"    xmlns:jee="http://www.springframework.org/schema/jee" xmlns:mvc="http://www.springframework.org/schema/mvc"    xsi:schemaLocation="          http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd          http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-3.1.xsd          http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.1.xsd          http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd          http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-3.1.xsd          http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.1.xsd          http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-3.1.xsd          http://www.springframework.org/schema/jms http://www.springframework.org/schema/jms/spring-jms-3.1.xsd          http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-3.1.xsd          http://www.springframework.org/schema/oxm http://www.springframework.org/schema/oxm/spring-oxm-3.1.xsd          http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd          http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.1.xsd        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">    <!-- ====================================================================================== -->    <!-- 拦截器配置文件 -->    <!-- ====================================================================================== --><!--     <bean id="startQuartz" lazy-init="false" autowire="no" class="org.springframework.scheduling.quartz.SchedulerFactoryBean"> </bean> -->    <!-- ====================================================================================== -->         <!-- 要调用的工作类 -->        <bean id="quartzJob" class="com.util.CallQuartz"></bean>        <!-- 定义调用对象和调用对象的方法 -->        <bean id="jobtask" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">            <!-- 调用的类 -->            <property name="targetObject">                <ref bean="quartzJob"/>            </property>            <!-- 调用类中的方法 -->            <property name="targetMethod">                <value>callAllQuartz</value>            </property>        </bean>        <!-- 定义触发时间 -->        <bean id="doTime" class="org.springframework.scheduling.quartz.CronTriggerBean">            <property name="jobDetail">                <ref bean="jobtask"/>            </property>            <!-- cron表达式 -->            <property name="cronExpression">                <value>*/10 * * * * ?</value>            </property>        </bean>        <!-- 总管理类 如果将lazy-init=‘false‘那么容器启动就会执行调度程序  -->        <bean id="startQuertz" lazy-init="false" autowire="no" class="org.springframework.scheduling.quartz.SchedulerFactoryBean">            <property name="triggers">                <list>                    <ref bean="doTime"/>                </list>            </property>        </bean>        <!-- ====================================================================================== --></beans>  

 

web.xml文件中加入相应上述加载配置文件路径。

 

 第2部分 代码示例

首先定义一个任务的类

  1 package com.util.vo;  2   3 import java.io.IOException;  4 import java.net.HttpURLConnection;  5 import java.net.MalformedURLException;  6 import java.net.URL;  7 import java.util.ArrayList;  8 import java.util.HashMap;  9 import java.util.List; 10 import java.util.Map; 11  12 import org.apache.log4j.Logger; 13 import org.quartz.Job; 14 import org.quartz.JobExecutionContext; 15 import org.quartz.JobExecutionException; 16  17  18 /** 19  *  20  * @ClassName: QuartzVo 21  *  22  * @author Xingle 23  * @date 2014-8-14 下午12:49:25 24  */ 25 public class QuartzVo implements Job{ 26      27     public static int Id = 0; 28      29     private static Logger logger = Logger.getLogger(QuartzVo.class); 30     //缓存中任务列表 31     public static List<QuartzVo> quartzList = new ArrayList<QuartzVo>(); 32     //缓存中任务map 33     public static Map<String, QuartzVo> quartzMap = new HashMap<String, QuartzVo>(); 34      35          36     /** 37      * id 38      */ 39     public String id ; 40     /** 41      * 任务名称 42      */ 43     public String jobTitle; 44     /** 45      * 调度路径 46      */ 47     public String  jcallpath; 48     /** 49      * 触发表达式 50      */ 51     public String jobcron; 52     /** 53     * @Fields s_date : 开始时间 54     */ 55     public String s_date; 56     /** 57     * @Fields cycle : 循环标示:1 循环;2 单次 58     */ 59     public String cycle; 60      61     public String getId() { 62         return id; 63     } 64     public void setId(String id) { 65         this.id = id; 66     } 67     public String getJobTitle() { 68         return jobTitle; 69     } 70     public void setJobTitle(String jobTitle) { 71         this.jobTitle = jobTitle; 72     } 73     public String getJcallpath() { 74         return jcallpath; 75     } 76     public void setJcallpath(String jcallpath) { 77         this.jcallpath = jcallpath; 78     } 79     public String getJobcron() { 80         return jobcron; 81     } 82     public void setJobcron(String jobcron) { 83         this.jobcron = jobcron; 84     } 85     public String getCycle() { 86         return cycle; 87     } 88     public void setCycle(String cycle) { 89         this.cycle = cycle; 90     } 91      92     public String getS_date() { 93         return s_date; 94     } 95     public void setS_date(String s_date) { 96         this.s_date = s_date; 97     } 98     /** 99      * 执行任务100      * @Description: 101      * @param arg0102      * @throws JobExecutionException103      * @author xingle104      * @data 2014-8-14 下午12:51:35105      */106     @Override107     public void execute(JobExecutionContext context) throws JobExecutionException {108         String jobName = context.getJobDetail().getName();109         logger.debug("定时任务【" + jobName + "】 将要执行 start!!");110         QuartzVo quartzVo = QuartzVo.quartzMap.get(jobName);111         String inurl = quartzVo.getJcallpath();112         URL url = null;113         HttpURLConnection conn = null;114         try {115             url = new URL(inurl);116             conn = (HttpURLConnection) url.openConnection();117         } catch (MalformedURLException e) {118             e.printStackTrace();119         } catch (IOException e) {120             System.out.println("***************** 连接失败,程序地址 : " + inurl);121             e.printStackTrace();122         }123         try {124             if (conn.getResponseCode() != HttpURLConnection.HTTP_OK) {125                 System.out.println("****************** 调度失败!!,程序地址 : " + inurl);126             } else {127                 System.out.println("定时任务【" + jobName + "】" + "已完成调度,程序地址: "128                         + inurl);129             }130         } catch (IOException e) {131             e.printStackTrace();132         }133         134     }135 136 }

 

定义一个调用任务:

  1 package com.util;  2   3 import java.io.BufferedReader;  4 import java.io.File;  5 import java.io.FileNotFoundException;  6 import java.io.FileReader;  7 import java.io.IOException;  8 import java.util.ArrayList;  9 import java.util.HashMap; 10 import java.util.Iterator; 11 import java.util.List; 12 import java.util.Map; 13 import java.util.Map.Entry; 14  15 import org.apache.log4j.Logger; 16 import org.springframework.beans.factory.annotation.Autowired; 17 import org.springframework.beans.factory.annotation.Qualifier; 18  19  20 import com.util.vo.QuartzVo; 21 import com.whalin.MemCached.MemCachedClient; 22  23 /** 24  * 调用任务 25  * @ClassName: CallQuartz 26  * TODO 27  * @author Xingle 28  * @date 2014-8-14 下午12:48:44 29  */ 30 public class CallQuartz { 31     private static Logger logger = Logger.getLogger(CallQuartz.class); 32      33     @Autowired  34     @Qualifier("memcachedClient") 35     private MemCachedClient memClient; 36          37     public void callAllQuartz(){ 38         List<QuartzVo> list =new ArrayList<QuartzVo>(); 39         Iterator<String> idIter = QuartzVo.quartzMap.keySet().iterator(); 40         String idStr = ""; 41         while(idIter.hasNext()){ 42             idStr = idStr+idIter.next()+","; 43         } 44         logger.info("当前任务有: "+idStr); 45         String flag = ""; 46         Map<String,List<QuartzVo> > map = this.getNewJobs(); 47         Iterator<Entry<String, List<QuartzVo>>> iter = map.entrySet().iterator(); 48         while(iter.hasNext()){ 49             Entry<String, List<QuartzVo>> entry = iter.next(); 50             flag = entry.getKey(); 51             list =  entry.getValue(); 52         } 53         //新增 54         if("1".equals(flag)){ 55             logger.info("新增加定时任务的数量:【 "+list.size()+"】"); 56             for(int i =0;i<list.size();i++){ 57                 QuartzVo vo = list.get(i);     58                 QuartzVo.quartzMap.put(vo.getJobTitle(), vo);     59                 QuartzManager.addJob(vo.getJobTitle(), vo, vo.getJobcron()); 60                              61             } 62         } 63         else if("2".equals(flag)){ 64             logger.info("删除的定时任务的数量:【 "+list.size()+"】"); 65             for(int i =0;i<list.size();i++){ 66                 QuartzVo vo = list.get(i);             67                 QuartzManager.removeJob(vo.getJobTitle()); 68                 QuartzVo.quartzMap.remove(vo.getJobTitle()); 69             } 70              71         } 72          73     } 74  75     /** 76      * 获取任务 77      * @return 78      * @author xingle 79      * @data 2014-8-14 下午12:59:58 80      */ 81     private Map<String, List<QuartzVo>> getNewJobs() { 82         //返回的map 83         Map<String,List<QuartzVo>> returnMap=new HashMap<String,List<QuartzVo>>(); 84         List<QuartzVo> returnLs = new ArrayList<>(); 85         //文件列表 86         List<QuartzVo> fileLs = new ArrayList<>(); 87         List<String> fileNameLs = new ArrayList<>(); 88         BufferedReader ins = null; 89         File f = new File("D:\\test/tasklist1.txt"); 90         try { 91              92             int i = QuartzVo.Id++; 93             ins = new BufferedReader(new FileReader(f)); 94             String line = ""; 95             while ((line = ins.readLine()) != null) { 96                 //增加一个是否执行标识,0 未执行 97                 //line = line+"|0"; 98                 String[] task = line.split("\\|"); 99                 100                 QuartzVo quartzVo = new QuartzVo();101                 String id = "quarzJob_"+ i;102                 quartzVo.setId(id);103                 quartzVo.setJobTitle(task[0]);104                 quartzVo.setJcallpath(task[1]);105                 quartzVo.setJobcron(task[2]);106                 quartzVo.setS_date(task[3]);107                 quartzVo.setCycle(task[4]);108                                 109                 fileLs.add(quartzVo);110                 fileNameLs.add(quartzVo.getJobTitle());            111         }112             ins.close();113         } catch (FileNotFoundException e) {114             e.printStackTrace();115         } catch (IOException e) {116             e.printStackTrace();117         }118         119         String flag = "";        120         int fileNum = fileLs.size();121         int quarzNum = QuartzVo.quartzMap.size();122         if(fileNum > quarzNum){123             flag = "1";124             for(int i =0;i<fileNum;i++){125                 QuartzVo fileVo = fileLs.get(i);126                 if(!QuartzVo.quartzMap.keySet().contains(fileVo.getJobTitle())){127                     QuartzVo.quartzList.add(fileVo);128                     //要增加的129                     returnLs.add(fileVo);130                 }131             }132         }133         else if(fileNum<quarzNum){134             flag = "2";135             for(int i = 0;i<QuartzVo.quartzList.size() ; i++){136                 if(!fileNameLs.contains(QuartzVo.quartzList.get(i).getJobTitle())){137                     //需要要删除的任务138                     returnLs.add(QuartzVo.quartzList.get(i));139                 }140             }141             for(int i = 0;i<QuartzVo.quartzList.size() ; i++){142                 QuartzVo vo = QuartzVo.quartzList.get(i);143                 for(int j = 0;j<returnLs.size();j++){144                     if(vo.getId().equals(returnLs.get(j).getId())){145                         QuartzVo.quartzList.remove(i);146                     }147                 }148             }149         }150         151         returnMap.put(flag, returnLs);152         return returnMap;153     }154 155 }

 

任务管理:

 1 package com.util; 2  3 import java.text.ParseException; 4 import java.text.SimpleDateFormat; 5 import java.util.Date; 6  7 import org.apache.log4j.Logger; 8 import org.quartz.CronTrigger; 9 import org.quartz.JobDetail;10 import org.quartz.Scheduler;11 import org.quartz.SchedulerException;12 import org.quartz.SchedulerFactory;13 import org.quartz.SimpleTrigger;14 import org.quartz.impl.StdSchedulerFactory;15 16 import com.util.vo.QuartzVo;17 18 19 /**20  * 任务管理21  * @ClassName: QuartzManager22  * 23  * @author Xingle24  * @date 2014-8-14 下午2:34:1625  */26 public class QuartzManager {27     private static Logger logger = Logger.getLogger(QuartzManager.class);28     29     //Create an uninitialized StdSchedulerFactory.30     private static SchedulerFactory sf = new StdSchedulerFactory();31     32     private static String TRIGGER_GROUP_NAME = "quartzTrigger";33     34     /**35      * 添加任务36      * @param jobName37      * @param job38      * @param time39      * @author xingle40      * @data 2014-8-14 下午7:45:0941      */42     public static void addJob(String jobName,QuartzVo job,String time){        43         try {44             Scheduler scheduler = sf.getScheduler();45             46             //任务名,任务组,任务执行类47             JobDetail jobDetail = new JobDetail(jobName, jobName, job.getClass());48 49             if("1".equals(job.getCycle())){//循环50                 CronTrigger trigger = new CronTrigger(jobName, jobName);51                 trigger.setCronExpression(time);52                 scheduler.scheduleJob(jobDetail, trigger);53             }54             else{//单次55                 String s_Date = job.getS_date(); 56                 logger.debug("*****时间:"+s_Date);57                 58                 SimpleDateFormat formate= new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"); 59                 Date startTime = formate.parse(s_Date);    60                 logger.debug("*****时间:"+startTime);61                 SimpleTrigger trigger = new SimpleTrigger(jobName, jobName, startTime);62                 scheduler.scheduleJob(jobDetail, trigger);    63             }64             if(!scheduler.isShutdown()){65                 scheduler.start();66             }67             logger.debug("*********【添加】定时任务【"+jobName+"】 加载完成!*****************");68             69             70         } catch (SchedulerException e) {71             e.printStackTrace();72         } catch (ParseException e) {73             e.printStackTrace();74         }75     }76     77     /**78      * 删除任务79      * @param jobName80      * @author xingle81      * @data 2014-8-14 下午7:45:1682      */83     public static void removeJob(String jobName){84          try {85             Scheduler sched = sf.getScheduler();86             sched.pauseTrigger(jobName,jobName);//停止触发器87             sched.unscheduleJob(jobName,jobName);//移除触发器88             sched.deleteJob(jobName, jobName);89         } catch (SchedulerException e) {90             e.printStackTrace();91         }92          logger.debug("*********定时任务【"+jobName+"】 已删除完成!*****************");93     }94      95 }

 

读取的任务简单为下:

任务1|http://www.baidu.com|0 0/1 * * * ?||1
任务4|http://www.iteye.com/problems/99952||2014-08-15 11:34:15|2
任务5|https://pomotodo.com/app/|0 0/1 * * * ?||1
任务3|http://www.w3school.com.cn/html5/|0 0/1 * * * ?||1
任务6|http://tool.oschina.net/apidocs/apidoc?api=jdk-zh|0 0/2 * * * ?||1

 

其中Cron 触发器的时间设置可以参考有关内容配置,
以上任务可名称不可以重复,任务可随时添加和删除。
 
执行结果(截取):
中途删除任务3