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文章目录
- 前言
- 一、Springboot 整合：
- 1.1 引入jar：
- 1.2 配置zookeeper 注册中心：
- 1.3 定义job 业务类：
- 1.4 job 注册到zookeeper：
- 1.5 项目启动：
- 1.5.1 zookeeper 注册中心实例：
- 1.5.2 任务执行日志输出：
- 二、扩展：
- 2.1 任务监听器：
- 2. 2 DataflowJob 流工作：
- 2.2.1 新建 DataflowJob：
- 2.2.2 streaming.process 属性配置：
- 2.2.3 执行效果：
- 总结
前言
本文对springBoot 整合 elasticjob 进行介绍。 本文环境 jdk:1.8 ; zookeeper : 3.7
一、Springboot 整合：
1.1 引入jar：
<!-- https://mvnrepository.com/artifact/org.apache.shardingsphere.elasticjob/elasticjob-lite-core --><dependency><groupId>org.apache.shardingsphere.elasticjob</groupId><artifactId>elasticjob-lite-core</artifactId><!-- <version>3.0.4</version>--><version>3.0.1</version></dependency><dependency><groupId>org.yaml</groupId><artifactId>snakeyaml</artifactId><version>1.27</version></dependency><dependency><groupId>ch.qos.logback</groupId><artifactId>logback-classic</artifactId><version>1.2.12</version></dependency>
1.2 配置zookeeper 注册中心：
ElasticJobZookeeper：
import org.apache.shardingsphere.elasticjob.reg.base.CoordinatorRegistryCenter;
import org.apache.shardingsphere.elasticjob.reg.zookeeper.ZookeeperConfiguration;
import org.apache.shardingsphere.elasticjob.reg.zookeeper.ZookeeperRegistryCenter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;@Configuration
public class ElasticJobZookeeper {@Bean(initMethod = "init")public CoordinatorRegistryCenter createRegistryCenter() {ZookeeperConfiguration zookeeperConfiguration = new ZookeeperConfiguration("localhost:2181", "elastic-job");zookeeperConfiguration.setConnectionTimeoutMilliseconds(10000);zookeeperConfiguration.setSessionTimeoutMilliseconds(10000);zookeeperConfiguration.setMaxSleepTimeMilliseconds(10000);CoordinatorRegistryCenter regCenter = new ZookeeperRegistryCenter(zookeeperConfiguration);return regCenter;}
}1.3 定义job 业务类：
MyJob：
import lombok.extern.slf4j.Slf4j;
import org.apache.shardingsphere.elasticjob.api.ShardingContext;
import org.apache.shardingsphere.elasticjob.simple.job.SimpleJob;
import org.springframework.stereotype.Component;@Slf4j
@Component
public class MyJob implements SimpleJob {@Overridepublic void execute(ShardingContext shardingContext) {// 分片参数 0=text,1=image,2=radio,3=vedioString shardingParameter= shardingContext.getShardingParameter();String jobParameter= shardingContext.getJobParameter();log.debug("job 执行 error,job名称：{},分片数量:{},分片：{},分片参数:{},jobParamer:{}", shardingContext.getJobName(), shardingContext.getShardingTotalCount(),shardingContext.getShardingItem(), shardingParameter,jobParameter);if ("text".equals(jobParameter)) {// do something by sharding}switch (shardingContext.getShardingItem()) {case 0:// do something by sharding item 0break;case 1:// do something by sharding item 1break;case 2:// do something by sharding item 2break;// case n: ...}}
}MyJob1：
import lombok.extern.slf4j.Slf4j;
import org.apache.shardingsphere.elasticjob.api.ShardingContext;
import org.apache.shardingsphere.elasticjob.simple.job.SimpleJob;
import org.springframework.stereotype.Component;@Slf4j
@Component
public class MyJob1 implements SimpleJob {@Overridepublic void execute(ShardingContext shardingContext) {log.debug("job 执行 error,job名称：{},分片数量:{}",shardingContext.getJobName(),shardingContext.getShardingTotalCount());switch (shardingContext.getShardingItem()) {case 0:// do something by sharding item 0break;case 1:// do something by sharding item 1break;case 2:// do something by sharding item 2break;// case n: ...}}
}1.4 job 注册到zookeeper：
ElasticJobConfigure
import com.example.springelasticjob.quickstart.MyJob;
import com.example.springelasticjob.quickstart.MyJob1;
import org.apache.shardingsphere.elasticjob.api.JobConfiguration;
import org.apache.shardingsphere.elasticjob.lite.api.bootstrap.impl.ScheduleJobBootstrap;
import org.apache.shardingsphere.elasticjob.reg.base.CoordinatorRegistryCenter;
import org.apache.shardingsphere.elasticjob.simple.job.SimpleJob;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;@Configuration
public class ElasticJobConfigure implements InitializingBean {@Autowiredprivate MyJob myJob;@Autowiredprivate MyJob1 myJob1;@Autowiredprivate CoordinatorRegistryCenter coordinatorRegistryCenter;public JobConfiguration createJobConfiguration(Class<? extends SimpleJob> JobClass, int shardingTotalCount, String cron, String shardingItemParameters) {// 创建作业配置JobConfiguration jobConfiguration = JobConfiguration.newBuilder(JobClass.getName(), shardingTotalCount).cron(cron).overwrite(true).shardingItemParameters(shardingItemParameters).jobListenerTypes().build();return jobConfiguration;}@Overridepublic void afterPropertiesSet() throws Exception {JobConfiguration jobConfiguration = createJobConfiguration(myJob.getClass(), 1, "0/10 * * * * ?", null);new ScheduleJobBootstrap(coordinatorRegistryCenter, myJob, jobConfiguration).schedule();JobConfiguration jobConfiguration1 = createJobConfiguration(myJob1.getClass(), 1, "0/1 * * * * ?", null);new ScheduleJobBootstrap(coordinatorRegistryCenter, myJob1, jobConfiguration1).schedule();}
}1.5 项目启动：
1.5.1 zookeeper 注册中心实例：
1.5.2 任务执行日志输出：
二、扩展：
2.1 任务监听器：
- 定义监听器：
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.time.DateFormatUtils;
import org.apache.shardingsphere.elasticjob.infra.listener.ElasticJobListener;
import org.apache.shardingsphere.elasticjob.infra.listener.ShardingContexts;import java.util.Date;@Slf4j
public class MyElasticJobListener implements ElasticJobListener {private long beginTime = 0;@Overridepublic void beforeJobExecuted(ShardingContexts shardingContexts) {beginTime = System.currentTimeMillis();log.info("===>{} MyElasticJobListener BEGIN TIME: {} <===",shardingContexts.getJobName(), DateFormatUtils.format(new Date(), "yyyy-MM-dd HH:mm:ss"));}@Overridepublic void afterJobExecuted(ShardingContexts shardingContexts) {long endTime = System.currentTimeMillis();log.info("===>{} MyElasticJobListener END TIME: {},TOTAL CAST: {} <===",shardingContexts.getJobName(), DateFormatUtils.format(new Date(), "yyyy-MM-dd HH:mm:ss"), endTime - beginTime);}@Overridepublic String getType() {return "myElasticJobListener";}}2） 在项目resources 新建文件夹： META-INF\services
3）新建文件，名称为：org.apache.shardingsphere.elasticjob.infra.listener.ElasticJobListener
文集内容：
# 监听器实现类的 类全路径
com.example.springelasticjob.config.MyElasticJobListener
4）job 配置增加监听器：
// 创建作业配置JobConfiguration jobConfiguration = JobConfiguration.newBuilder("myjob-param", 1).cron("0/5 * * * * ?").overwrite(true).shardingItemParameters("0=Beijing,1=Shanghai,2=Guangzhou").jobParameter("0=a,1=b,2=c").jobListenerTypes("myElasticJobListener").build();jobListenerTypes(“myElasticJobListener”) 中 “myElasticJobListener” 要和 MyElasticJobListener getType() 返回的保持一致，否则启动无法找到 监听器：
2. 2 DataflowJob 流工作：
2.2.1 新建 DataflowJob：
import lombok.extern.slf4j.Slf4j;
import org.apache.shardingsphere.elasticjob.api.ShardingContext;
import org.apache.shardingsphere.elasticjob.dataflow.job.DataflowJob;import java.util.ArrayList;
import java.util.List;/*** 流任务*/
@Slf4j
public class MyDataFlowJob implements DataflowJob {@Overridepublic List fetchData(ShardingContext shardingContext) {// 抓取数据// 分片参数 0=text,1=image,2=radio,3=vedioString jobParameter = shardingContext.getJobParameter();log.debug("job 执行 error,job名称：{},分片数量:{},分片：{},分片参数:{}", shardingContext.getJobName(), shardingContext.getShardingTotalCount(), shardingContext.getShardingItem(), jobParameter);List list = new ArrayList(1);list.add("lgx");return list;}@Overridepublic void processData(ShardingContext shardingContext, List list) {// 数据处理System.out.println("list.toString() = " + list.toString());}
}2.2.2 streaming.process 属性配置：
private static JobConfiguration createJobConfiguration() {JobConfiguration jobConfiguration = JobConfiguration.newBuilder("myjob-dataflow-param", 1).cron("0/30 * * * * ?").overwrite(true).shardingItemParameters("0=Beijing,1=Shanghai,2=Guangzhou").jobParameter("0=a,1=b,2=c")// streaming.process 流处理设置为true.setProperty("streaming.process","true").build();return jobConfiguration;}
2.2.3 执行效果：
虽然任务是每隔30s 执行一次，但是因为 fetchData 可以一直获取到数据，使的 processData 方法可以一直被调用：
总结
本文对 springBoot 整合 elasticjob 整合，监听器的使用，任务的流式处理做介绍。
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