Spring整合Quartz实现动态定时器的示例代码-java教程-PHP中文网

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Spring整合Quartz实现动态定时器的示例代码

高洛峰

Feb 07, 2017 pm 03:12 PM

一、版本说明

spring3.1以下的版本必须使用quartz1.x系列，3.1以上的版本才支持quartz 2.x，不然会出错。

原因：spring对于quartz的支持实现，org.springframework.scheduling.quartz.CronTriggerBean继承了org.quartz.CronTrigger，在quartz1.x系列中org.quartz.CronTrigger是个类，而在quartz2.x系列中org.quartz.CronTrigger变成了接口，从而造成无法用spring的方式配置quartz的触发器（trigger）

此示例所选版本：spring版本号3.0.7.RELEASE，quartz版本1.8.6

二、添加jar包

我的是maven工程，pom.xml相关配置如下：

<properties>
   <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
   <spring.version>3.0.7.RELEASE</spring.version>
   <quartz.version>1.8.6</quartz.version>
 </properties>

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　<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
  <version>${spring.version}</version>
  <exclusions>
    <!-- Exclude Commons Logging in favor of SLF4j -->
    <exclusion>
      <groupId>commons-logging</groupId>
      <artifactId>commons-logging</artifactId>
    </exclusion>
  </exclusions>
</dependency>
 
<dependency><!--3.0.7没这个包 -->
  <groupId>org.springframework</groupId>
  <artifactId>spring-context-support</artifactId>
  <version>${spring.version}</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-webmvc</artifactId>
  <version>${spring.version}</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-orm</artifactId>
  <version>${spring.version}</version>
  <type>jar</type>
  <scope>compile</scope>
</dependency>
 
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-test</artifactId>
  <version>${spring.version}</version>
  <type>jar</type>
  <scope>test</scope>
</dependency>

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三、整合实现

1、spring配置

spring只需要添加quartz调度工厂bean就可以了

<bean id="schedulerFactoryBean" class="org.springframework.scheduling.quartz.SchedulerFactoryBean" />

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2、定时器工作类实现

定义定时器作业类，该类继承自job类

package com.ld.nhmz.quartz;
 
import java.text.SimpleDateFormat;
import java.util.Date;
 
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
 
/**
 * quartz示例定时器类
 * 
 * @author Administrator
 * 
 */
public class QuartzJobExample implements Job {
  @Override
  public void execute(JobExecutionContext arg0) throws JobExecutionException {
    System.out.println(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) + "★★★★★★★★★★★");
  }
}

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定义定时器管理类

package com.ld.nhmz.quartz;
 
import org.quartz.CronTrigger;
import org.quartz.JobDetail;
import org.quartz.Scheduler;
 
/**
 * Quartz调度管理器
 * 
 * @author Administrator
 * 
 */
public class QuartzManager {
  private static String JOB_GROUP_NAME = "EXTJWEB_JOBGROUP_NAME";
  private static String TRIGGER_GROUP_NAME = "EXTJWEB_TRIGGERGROUP_NAME";
 
  /**
   * @Description: 添加一个定时任务，使用默认的任务组名，触发器名，触发器组名
   * 
   * @param sched
   *      调度器
   * 
   * @param jobName
   *      任务名
   * @param cls
   *      任务
   * @param time
   *      时间设置，参考quartz说明文档
   * 
   * @Title: QuartzManager.java
   */
  public static void addJob(Scheduler sched, String jobName, @SuppressWarnings("rawtypes") Class cls, String time) {
    try {
      JobDetail jobDetail = new JobDetail(jobName, JOB_GROUP_NAME, cls);// 任务名，任务组，任务执行类
      // 触发器
      CronTrigger trigger = new CronTrigger(jobName, TRIGGER_GROUP_NAME);// 触发器名,触发器组
      trigger.setCronExpression(time);// 触发器时间设定
      sched.scheduleJob(jobDetail, trigger);
      // 启动
      if (!sched.isShutdown()) {
        sched.start();
      }
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
 
  /**
   * @Description: 添加一个定时任务
   * 
   * @param sched
   *      调度器
   * 
   * @param jobName
   *      任务名
   * @param jobGroupName
   *      任务组名
   * @param triggerName
   *      触发器名
   * @param triggerGroupName
   *      触发器组名
   * @param jobClass
   *      任务
   * @param time
   *      时间设置，参考quartz说明文档
   * 
   * @Title: QuartzManager.java
   */
  public static void addJob(Scheduler sched, String jobName, String jobGroupName, String triggerName, String triggerGroupName, @SuppressWarnings("rawtypes") Class jobClass, String time) {
    try {
      JobDetail jobDetail = new JobDetail(jobName, jobGroupName, jobClass);// 任务名，任务组，任务执行类
      // 触发器
      CronTrigger trigger = new CronTrigger(triggerName, triggerGroupName);// 触发器名,触发器组
      trigger.setCronExpression(time);// 触发器时间设定
      sched.scheduleJob(jobDetail, trigger);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
 
  /**
   * @Description: 修改一个任务的触发时间(使用默认的任务组名，触发器名，触发器组名)
   * 
   * @param sched
   *      调度器
   * @param jobName
   * @param time
   * 
   * @Title: QuartzManager.java
   */
  @SuppressWarnings("rawtypes")
  public static void modifyJobTime(Scheduler sched, String jobName, String time) {
    try {
      CronTrigger trigger = (CronTrigger) sched.getTrigger(jobName, TRIGGER_GROUP_NAME);
      if (trigger == null) {
        return;
      }
      String oldTime = trigger.getCronExpression();
      if (!oldTime.equalsIgnoreCase(time)) {
        JobDetail jobDetail = sched.getJobDetail(jobName, JOB_GROUP_NAME);
        Class objJobClass = jobDetail.getJobClass();
        removeJob(sched, jobName);
        addJob(sched, jobName, objJobClass, time);
      }
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
 
  /**
   * @Description: 修改一个任务的触发时间
   * 
   * @param sched
   *      调度器 *
   * @param sched
   *      调度器
   * @param triggerName
   * @param triggerGroupName
   * @param time
   * 
   * @Title: QuartzManager.java
   */
  public static void modifyJobTime(Scheduler sched, String triggerName, String triggerGroupName, String time) {
    try {
      CronTrigger trigger = (CronTrigger) sched.getTrigger(triggerName, triggerGroupName);
      if (trigger == null) {
        return;
      }
      String oldTime = trigger.getCronExpression();
      if (!oldTime.equalsIgnoreCase(time)) {
        CronTrigger ct = (CronTrigger) trigger;
        // 修改时间
        ct.setCronExpression(time);
        // 重启触发器
        sched.resumeTrigger(triggerName, triggerGroupName);
      }
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
 
  /**
   * @Description: 移除一个任务(使用默认的任务组名，触发器名，触发器组名)
   * 
   * @param sched
   *      调度器
   * @param jobName
   * 
   * @Title: QuartzManager.java
   */
  public static void removeJob(Scheduler sched, String jobName) {
    try {
      sched.pauseTrigger(jobName, TRIGGER_GROUP_NAME);// 停止触发器
      sched.unscheduleJob(jobName, TRIGGER_GROUP_NAME);// 移除触发器
      sched.deleteJob(jobName, JOB_GROUP_NAME);// 删除任务
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
 
  /**
   * @Description: 移除一个任务
   * 
   * @param sched
   *      调度器
   * @param jobName
   * @param jobGroupName
   * @param triggerName
   * @param triggerGroupName
   * 
   * @Title: QuartzManager.java
   */
  public static void removeJob(Scheduler sched, String jobName, String jobGroupName, String triggerName, String triggerGroupName) {
    try {
      sched.pauseTrigger(triggerName, triggerGroupName);// 停止触发器
      sched.unscheduleJob(triggerName, triggerGroupName);// 移除触发器
      sched.deleteJob(jobName, jobGroupName);// 删除任务
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
 
  /**
   * @Description:启动所有定时任务
   * 
   * @param sched
   *      调度器
   * 
   * @Title: QuartzManager.java
   */
  public static void startJobs(Scheduler sched) {
    try {
      sched.start();
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
 
  /**
   * @Description:关闭所有定时任务
   * 
   * 
   * @param sched
   *      调度器
   * 
   * 
   * @Title: QuartzManager.java
   */
  public static void shutdownJobs(Scheduler sched) {
    try {
      if (!sched.isShutdown()) {
        sched.shutdown();
      }
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }
}

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测试代码，这里SchedulerFactory没有使用spring中配置的bean，而是new出来的，做测试用

package com.ld.nhmz.quartz.test;
 
import org.junit.Test;
import org.quartz.Scheduler;
import org.quartz.SchedulerFactory;
import org.quartz.impl.StdSchedulerFactory;
 
import com.ld.nhmz.quartz.QuartzJobExample;
import com.ld.nhmz.quartz.QuartzManager;
 
/**
 * @Description: 测试类
 * 
 * @ClassName: QuartzTest.java
 */
public class QuartzTest {
  @Test
  public void quartz() {
    try {
      SchedulerFactory gSchedulerFactory = new StdSchedulerFactory();
      Scheduler sche = gSchedulerFactory.getScheduler();
      String job_name = "动态任务调度";
      System.out.println("【系统启动】开始(每1秒输出一次)...");
      QuartzManager.addJob(sche, job_name, QuartzJobExample.class, "0/1 * * * * ?");
 
      Thread.sleep(3000);
      System.out.println("【修改时间】开始(每2秒输出一次)...");
      QuartzManager.modifyJobTime(sche, job_name, "10/2 * * * * ?");
      Thread.sleep(4000);
      System.out.println("【移除定时】开始...");
      QuartzManager.removeJob(sche, job_name);
      System.out.println("【移除定时】成功");
 
      System.out.println("【再次添加定时任务】开始(每10秒输出一次)...");
      QuartzManager.addJob(sche, job_name, QuartzJobExample.class, "*/10 * * * * ?");
      Thread.sleep(30000);
      System.out.println("【移除定时】开始...");
      QuartzManager.removeJob(sche, job_name);
      System.out.println("【移除定时】成功");
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}

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显示结果：

Spring整合Quartz实现动态定时器的示例代码