quartz简单使用

quartz具备如下特点

强大的调度功能，例如支持丰富多样的调度方法，可以满足各种常规及特殊需求；
灵活的应用方式，例如支持任务和调度的多种组合方式，支持调度数据的多种存储方式；
分布式和集群能力，Terracotta 收购后在原来功能基础上作了进一步提升。

quartz核心元素

Scheduler:任务调度器，是实际执行任务调度的控制器。在spring中通过SchedulerFactoryBean封装起来。
Trigger：触发器，用于定义任务调度的时间规则，有SimpleTrigger,CronTrigger,DateIntervalTrigger和NthIncludedDayTrigger，其中CronTrigger用的比较多，本文主要介绍这种方式。CronTrigger在spring中封装在CronTriggerFactoryBean中。
Calendar:它是一些日历特定时间点的集合。一个trigger可以包含多个Calendar，以便排除或包含某些时间点。
JobDetail:用来描述Job实现类及其它相关的静态信息，如Job名字、关联监听器等信息。在spring中有JobDetailFactoryBean和 MethodInvokingJobDetailFactoryBean两种实现，如果任务调度只需要执行某个类的某个方法，就可以通过MethodInvokingJobDetailFactoryBean来调用。
Job：是一个接口，只有一个方法void execute(JobExecutionContext context),开发者实现该接口定义运行任务，JobExecutionContext类提供了调度上下文的各种信息。Job运行时的信息保存在JobDataMap实例中。实现Job接口的任务，默认是无状态的，若要将Job设置成有状态的，在quartz中是给实现的Job添加@DisallowConcurrentExecution注解（以前是实现StatefulJob接口，现在已被Deprecated）,在与spring结合中可以在spring配置文件的job detail中配置concurrent参数。

<?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.java</groupId>
    <artifactId>time-job</artifactId>
    <version>1.0-SNAPSHOT</version>
 
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.5.7</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
 
    <dependencies>
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-quartz</artifactId>
        </dependency>
 
        <!--引入junit单元测试依赖-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
 
    </dependencies>
 
    <build>
 
 
        <plugins>
 
            <!--编译插件定义编译细节-->
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>utf-8</encoding>
                </configuration>
            </plugin>
 
 
        </plugins>
    </build>
 
 
</project>

package com.java;
 
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
/**
 * @author yourheart
 * @Description
 * @create 2022-05-23 17:40
 */
@SpringBootApplication
public class TimeApplication {
    public static void main(String[] args) {
 
        SpringApplication.run(TimeApplication.class,args);
 
    }
}

package com.java;
 
import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
 
/**
 * @author yourheart
 * @Description
 * @create 2022-05-23 19:42
 */
public class MyJob implements Job {
 
    private final static Logger log= LoggerFactory.getLogger(MyJob.class);
 
    @Override
    public void execute(JobExecutionContext jobExecutionContext) throws JobExecutionException {
        Object name = jobExecutionContext.getJobDetail().getJobDataMap().get("name");
        log.warn(name+"搞卫生");
    }
}

package com.java.config;
 
import com.java.MyJob;
import org.quartz.JobBuilder;
import org.quartz.JobDetail;
import org.quartz.SimpleScheduleBuilder;
import org.quartz.Trigger;
import org.quartz.TriggerBuilder;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
 
/**
 * @author yourheart
 * @Description
 * @create 2022-05-23 19:52
 */
@Configuration
public class QuartzConfiguration {
    @Bean
    public JobDetail jobDetail() {
        return JobBuilder.newJob(MyJob.class)
                /**
                 * 自己取名
                 */
                .withIdentity("fileHandleQuartzJobDetail")
                .usingJobData("name", "张三")
                .storeDurably().build();
    }
 
    /**
     * 构建触发器
     * @return
     */
    @Bean
    public Trigger trigger() {
        /**
         * 时间自己定，根据方法进行修改时间
         */
        SimpleScheduleBuilder schedBuilder=SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(5).repeatForever();
        return TriggerBuilder.newTrigger().forJob( jobDetail()).
                /**
                 * 自己取名
                 */
                withIdentity("fileHandleQuartzJobTriger")
                .withSchedule(schedBuilder).build();
    }
}