springboot+quartz实现多任务动态修改时间，亲测有

作者: hey_sometimes | 来源:发表于2018-10-09 10:16 被阅读0次

网上已经有太多quartz定时任务的例子了，但是大多都不全，我这里整理了一下，希望对大家有所帮助。

下面不多说，直接上代码。

任务类，就是需要执行的定时任务。网上基本上都是一个任务一个类，但是我这边试了下，不同的任务可以放在同一个类下面，只要对应不同的方法就可以了。当然只是我这边试了可以，如果大家觉得有误的希望指正哈。


import com.ophylink.ems.api.dao.ScheduleConfigRepository;
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.stereotype.Component;

import java.util.Date;

@Component // 此注解必加
@EnableScheduling // 此注解必加
public class ScheduleTask implements Job {
    private static final Logger LOGGER = LoggerFactory.getLogger(ScheduleTask.class);
    @Autowired
    ScheduleConfigRepository repository;

    public void sayHello1() {
        LOGGER.info("这个是1" + repository.findOne("定时任务1").getName());
    }

    public void sayHello2() {
        LOGGER.info("这个是2");
    }

    @Override
    public void execute(JobExecutionContext jobExecutionContext) {
        Object jobName = jobExecutionContext.getJobDetail().getKey();
        System.err.println("这是" + jobName + "任务" + new Date());
    }
}

quartz配置类，这里不同的任务需要配置不同的jobDetail和不同的trigger，方便后面指定动态修改定时时间。


import org.quartz.JobDetail;
import org.quartz.Trigger;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean;
import org.springframework.scheduling.quartz.SchedulerFactoryBean;
import org.springframework.scheduling.quartz.SimpleTriggerFactoryBean;

@Configuration
public class QuartzConfiguration {
    // 配置定时任务1
    @Bean(name = "firstJobDetail")
    public MethodInvokingJobDetailFactoryBean firstJobDetail(ScheduleTask firstJob) {
        MethodInvokingJobDetailFactoryBean jobDetail = new MethodInvokingJobDetailFactoryBean();
        // 是否并发执行
        jobDetail.setConcurrent(false);
        // 为需要执行的实体类对应的对象
        jobDetail.setTargetObject(firstJob);
        // 需要执行的方法
        jobDetail.setTargetMethod("sayHello1");

        return jobDetail;
    }

    // 配置触发器1
    @Bean(name = "firstTrigger")
    public SimpleTriggerFactoryBean firstTrigger(JobDetail firstJobDetail) {
        SimpleTriggerFactoryBean trigger = new SimpleTriggerFactoryBean();
        trigger.setJobDetail(firstJobDetail);
        // 设置任务启动延迟
        trigger.setStartDelay(0);
        // 每5秒执行一次
        trigger.setRepeatInterval(5000);
        return trigger;
    }

    // 配置定时任务2
    @Bean(name = "secondJobDetail")
    public MethodInvokingJobDetailFactoryBean secondJobDetail(ScheduleTask secondJob) {
        MethodInvokingJobDetailFactoryBean jobDetail = new MethodInvokingJobDetailFactoryBean();
        // 是否并发执行
        jobDetail.setConcurrent(false);
        // 为需要执行的实体类对应的对象
        jobDetail.setTargetObject(secondJob);
        // 需要执行的方法
        jobDetail.setTargetMethod("sayHello2");
        return jobDetail;
    }

    // 配置触发器2
    @Bean(name = "secondTrigger")
    public SimpleTriggerFactoryBean secondTrigger(JobDetail secondJobDetail) {
        SimpleTriggerFactoryBean trigger = new SimpleTriggerFactoryBean();
        trigger.setJobDetail(secondJobDetail);
        // 定时任务时间（这里也可以用CronTrigger,同理）
        trigger.setStartDelay(0);
        trigger.setRepeatInterval(10000);
        return trigger;
    }

    // 配置Scheduler
    @Bean(name = "scheduler")
    public SchedulerFactoryBean schedulerFactory(Trigger firstTrigger, Trigger secondTrigger) {
        SchedulerFactoryBean bean = new SchedulerFactoryBean();
        // 延时启动，应用启动1秒后
        bean.setStartupDelay(1);
        // 注册触发器
        bean.setTriggers(firstTrigger,secondTrigger);
        return bean;
    }
}

查询数据库，修改定时间类，这里每隔五秒查询一次数据库，判断是否需要修改定时时间


import com.ophylink.ems.api.dao.ScheduleConfigRepository;
import com.ophylink.ems.api.entity.ScheduleConfig;
import org.quartz.Scheduler;
import org.quartz.SchedulerException;
import org.quartz.SimpleScheduleBuilder;
import org.quartz.SimpleTrigger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.EnableScheduling;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Component;

import javax.annotation.Resource;
import java.util.List;

@Configuration
@EnableScheduling
@Component
public class ScheduleRefreshDatabase {

    @Autowired
    private ScheduleConfigRepository repository;
    private List<ScheduleConfig> configList;

    @Resource(name = "firstTrigger")
    private SimpleTrigger firstTrigger;

    @Resource(name = "secondTrigger")
    private SimpleTrigger secondTrigger;

    @Resource(name = "scheduler")
    private Scheduler scheduler;

    @Scheduled(fixedRate = 5000) // 每隔5s查库，并根据查询结果决定是否重新设置定时任务
    public void scheduleUpdateCronTrigger() throws SchedulerException {
        configList = repository.findAll();
        if(configList!=null&&configList.size()>0) {
            for(ScheduleConfig config:configList) {
                SimpleTrigger trigger = null;
                switch (config.getName()){
                    case "定时任务1":trigger = (SimpleTrigger) scheduler.getTrigger(firstTrigger.getKey());break;
                    case "定时任务2":trigger = (SimpleTrigger) scheduler.getTrigger(secondTrigger.getKey());break;
                }
                Long currentTime = trigger.getRepeatInterval();// 当前Trigger使用的
                Long searchTime = repository.findOne(config.getName()).getScheduleTime();// 从数据库查询出来的

                if (currentTime.equals(searchTime)) {
                    // 如果当前使用的定时时间和数据库查出来的定时时间一致，则不刷新任务
                } else {
                    // 表达式调度构建器
                    SimpleScheduleBuilder scheduleBuilder = SimpleScheduleBuilder.repeatSecondlyForever(Integer.valueOf(String.valueOf(searchTime)));
                    // 按新的cronExpression表达式重新构建trigger
                    trigger = (SimpleTrigger) scheduler.getTrigger(trigger.getKey());
                    trigger = trigger.getTriggerBuilder().withIdentity(trigger.getKey())
                            .withSchedule(scheduleBuilder).build();
                    // 按新的trigger重新设置job执行
                    scheduler.rescheduleJob(trigger.getKey(), trigger);
                }
            }
        }
    }
}

以上就是全部的，下面贴出实体类，仓库类和maven


import javax.persistence.*;
import java.util.Objects;

@Entity
@Table(name = "schedule_config", schema = "ems", catalog = "")
public class ScheduleConfig {
    private String name;
    private Long scheduleTime;
    @Id
    @Column(name = "name")
    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Basic
    @Column(name = "schedule_time")
    public Long getScheduleTime() {
        return scheduleTime;
    }

    public void setScheduleTime(Long scheduleTime) {
        this.scheduleTime = scheduleTime;
    }


    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        ScheduleConfig config = (ScheduleConfig) o;
        return Objects.equals(name, config.name) &&
                Objects.equals(scheduleTime, config.scheduleTime);
    }

    @Override
    public int hashCode() {
        return Objects.hash(name, scheduleTime);
    }
}


import com.ophylink.ems.api.entity.ScheduleConfig;
import org.springframework.data.jpa.repository.JpaRepository;

public interface ScheduleConfigRepository extends JpaRepository<ScheduleConfig,String> {
}

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.ophylink</groupId>
    <artifactId>ems</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>ems</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.9.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>



        <dependency>
            <groupId>org.quartz-scheduler</groupId>
            <artifactId>quartz</artifactId>
            <version>2.2.1</version>
            <exclusions>
                <exclusion>
                    <artifactId>slf4j-api</artifactId>
                    <groupId>org.slf4j</groupId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency><!-- 该依赖必加，里面有sping对schedule的支持 -->
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
</project>

下面是数据库结构和数据
![1G%85P6C41XN9~I99MJ$)P.png

R01VYV${F4@4R9A8LPEGR3S.png

springboot+quartz实现多任务动态修改时间，亲测有

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