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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

    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">

    <!-- ====================================================================================== -->
    <!-- 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 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 
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  • 原文地址：https://www.cnblogs.com/xingele0917/p/3915492.html
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