java 多线程——quartz 定时调度的例子

mac2022-06-30 173

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

java 多线程—— 线程等待与唤醒

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">       <bean id="quartzJob" class="com.util.CallQuartz"></bean>  <bean id="jobtask" class="org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean">  <property name="targetObject"> <ref bean="quartzJob"/> </property>  <property name="targetMethod"> <value>callAllQuartz</value> </property> </bean>  <bean id="doTime" class="org.springframework.scheduling.quartz.CronTriggerBean"> <property name="jobDetail"> <ref bean="jobtask"/> </property>  <property name="cronExpression"> <value>*/10 * * * * ?</value> </property> </bean>  <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 arg0 102 * @throws JobExecutionException 103 * @author xingle 104 * @data 2014-8-14 下午12:51:35 105 */ 106 @Override 107 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: QuartzManager 22 * 23 * @author Xingle 24 * @date 2014-8-14 下午2:34:16 25 */ 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 jobName 37 * @param job 38 * @param time 39 * @author xingle 40 * @data 2014-8-14 下午7:45:09 41 */ 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 jobName 80 * @author xingle 81 * @data 2014-8-14 下午7:45:16 82 */ 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

转载于:https://www.cnblogs.com/kms1989/p/5591789.html

相关资源：JAVA上百实例源码以及开源项目

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java 多线程——quartz 定时调度的例子

第1部分 配置

第2部分 代码示例

专利

第1部分配置

第2部分代码示例