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系列专栏：Spring Boot实战

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前言

最近一周，被借调到其他部门，赶一个紧急需求，需求内容如下：

PC网页触发一条设备升级记录（下图），后台要定时批量设备更新。这里定时要用到Quartz，批量数据处理要用到SpringBatch，二者结合，可以完成该需求。

由于之前，没有用过SpringBatch，于是上网查了下资料，发现可参考的不是很多，于是只能去慢慢的翻看官方文档。

Spring Batch - Reference Documentation

具体实现

在你的pom.xml文件中添加以下依赖： 

<dependencies><!-- Spring Boot --><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-batch</artifactId></dependency><!-- Quartz --><dependency><groupId>org.quartz-scheduler</groupId><artifactId>quartz</artifactId></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-quartz</artifactId></dependency>
</dependencies>

 在application.properties文件中添加以下配置：

spring.quartz.job-store-type=memory
spring.quartz.properties.org.quartz.scheduler.instanceName=MyScheduler
spring.quartz.properties.org.quartz.threadPool.threadCount=5

 创建一个实现Job接口的类，例如MyBatchJob：

import org.quartz.Job;
import org.quartz.JobExecutionContext;
import org.quartz.JobExecutionException;
import org.springframework.batch.core.JobParametersBuilder;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.scheduling.quartz.QuartzJobBean;public class MyBatchJob extends QuartzJobBean {@Autowiredprivate JobLauncher jobLauncher;@Overrideprotected void executeInternal(JobExecutionContext context) throws JobExecutionException {try {jobLauncher.run(myBatchJob(), new JobParametersBuilder().addString("JobID", String.valueOf(System.currentTimeMillis())).toJobParameters());} catch (Exception e) {throw new JobExecutionException(e);}}private Job myBatchJob() {// 返回你的Spring Batch Job实例}
}

 在你的配置类中（例如ApplicationConfig），添加一个SchedulerFactoryBean的Bean，用于配置定时任务的触发器：

import org.quartz.*;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.quartz.SchedulerFactoryBean;@Configuration
public class ApplicationConfig {@Beanpublic JobDetail myBatchJobDetail() {return JobBuilder.newJob(MyBatchJob.class).withIdentity("myBatchJob").storeDurably().build();}@Beanpublic Trigger myBatchJobTrigger() {SimpleScheduleBuilder scheduleBuilder = SimpleScheduleBuilder.simpleSchedule().withIntervalInSeconds(60) // 设置任务执行间隔，例如每60秒执行一次.repeatForever(); // 设置任务重复执行return TriggerBuilder.newTrigger().forJob(myBatchJobDetail()).withIdentity("myBatchJobTrigger").withSchedule(scheduleBuilder).build();}@Beanpublic SchedulerFactoryBean schedulerFactoryBean() {SchedulerFactoryBean schedulerFactoryBean = new SchedulerFactoryBean();schedulerFactoryBean.setJobDetails(myBatchJobDetail());schedulerFactoryBean.setTriggers(myBatchJobTrigger());return schedulerFactoryBean;}
}

现在，你已经成功地整合了Spring Boot、Spring Batch和Quartz，实现了定时批量任务。每隔指定的时间间隔（例如60秒），MyBatchJob将会被执行一次。