一 案例介绍说明
1.1 案例介绍
基于 Spring boot 集成方式的而产出的工程代码,完成对作业分片的实现,文件数据备份采取更接近真实项目的数 据库存取方式。
1.分片设置
2.每个线程获取给自的类型
二 操作说明
2.1 数据表的初始化
DROP TABLE IF EXISTS `t_file`;
CREATE TABLE `t_file` (
`id` varchar(11) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
`name` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
`type` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
`content` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
`backedUp` tinyint(1) NULL DEFAULT NULL,
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;
如图所示:
2.2 初始化数据
2.3 pom文件的编写
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<dependency>
<groupId>com.dangdang</groupId>
<artifactId>elastic-job-lite-spring</artifactId>
<version>2.1.5</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
2.4 编写注册配置类
1.截图如下
2.代码
package com.itheima.scheduler.elasticjob.springboot.config;
import com.dangdang.ddframe.job.api.ElasticJob;
import com.dangdang.ddframe.job.api.simple.SimpleJob;
import com.dangdang.ddframe.job.config.JobCoreConfiguration;
import com.dangdang.ddframe.job.config.dataflow.DataflowJobConfiguration;
import com.dangdang.ddframe.job.config.simple.SimpleJobConfiguration;
import com.dangdang.ddframe.job.event.JobEventConfiguration;
import com.dangdang.ddframe.job.event.rdb.JobEventRdbConfiguration;
import com.dangdang.ddframe.job.lite.config.LiteJobConfiguration;
import com.dangdang.ddframe.job.lite.spring.api.SpringJobScheduler;
import com.dangdang.ddframe.job.reg.base.CoordinatorRegistryCenter;
import com.itheima.scheduler.elasticjob.springboot.job.FileBackupJobDb;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.util.StringUtils;
import javax.sql.DataSource;
/**
* @author Administrator
* @version 1.0
**/
@Configuration
public class ElasticJobConfig {
@Autowired
private DataSource dataSource; //数据源已经存在,直接引入
// @Autowired
// SimpleJob fileBackupJob;
@Autowired
FileBackupJobDb fileBackupJob;
// @Autowired
// FileBackupJobDataFlow fileBackupJob;
@Autowired
CoordinatorRegistryCenter registryCenter;
/**
* 配置任务详细信息
* @param jobClass 任务执行类
* @param cron 执行策略
* @param shardingTotalCount 分片数量
* @param shardingItemParameters 分片个性化参数
* @return
*/
private LiteJobConfiguration createJobConfiguration(final Class<? extends SimpleJob> jobClass,
final String cron,
final int shardingTotalCount,
final String shardingItemParameters){
//JobCoreConfigurationBuilder
JobCoreConfiguration.Builder JobCoreConfigurationBuilder = JobCoreConfiguration.newBuilder(jobClass.getName(), cron, shardingTotalCount);
//设置shardingItemParameters
if(!StringUtils.isEmpty(shardingItemParameters)){
JobCoreConfigurationBuilder.shardingItemParameters(shardingItemParameters);
}
JobCoreConfiguration jobCoreConfiguration = JobCoreConfigurationBuilder.build();
//创建SimpleJobConfiguration
SimpleJobConfiguration simpleJobConfiguration = new SimpleJobConfiguration(jobCoreConfiguration, jobClass.getCanonicalName());
//创建LiteJobConfiguration
LiteJobConfiguration liteJobConfiguration = LiteJobConfiguration.newBuilder(simpleJobConfiguration).overwrite(true)
.monitorPort(9888)//设置dump端口
.build();
return liteJobConfiguration;
}
//创建支持dataFlow类型的作业的配置信息
private LiteJobConfiguration createFlowJobConfiguration(final Class<? extends ElasticJob> jobClass,
final String cron,
final int shardingTotalCount,
final String shardingItemParameters){
//JobCoreConfigurationBuilder
JobCoreConfiguration.Builder JobCoreConfigurationBuilder = JobCoreConfiguration.newBuilder(jobClass.getName(), cron, shardingTotalCount);
//设置shardingItemParameters
if(!StringUtils.isEmpty(shardingItemParameters)){
JobCoreConfigurationBuilder.shardingItemParameters(shardingItemParameters);
}
JobCoreConfiguration jobCoreConfiguration = JobCoreConfigurationBuilder.build();
// 定义数据流类型任务配置
DataflowJobConfiguration jobConfig = new DataflowJobConfiguration(jobCoreConfiguration, jobClass.getCanonicalName(),true);
//创建LiteJobConfiguration
LiteJobConfiguration liteJobConfiguration = LiteJobConfiguration.newBuilder(jobConfig).overwrite(true)
.monitorPort(9888)//设置dump端口
.build();
return liteJobConfiguration;
}
@Bean(initMethod = "init")
public SpringJobScheduler initSimpleElasticJob() {
// 增加任务事件追踪配置
JobEventConfiguration jobEventConfig = new JobEventRdbConfiguration(dataSource);
//创建SpringJobScheduler
SpringJobScheduler springJobScheduler = new SpringJobScheduler(fileBackupJob, registryCenter,
createJobConfiguration(fileBackupJob.getClass(), "0/10 * * * * ?", 4, "0=text,1=image,2=radio,3=vedio")
,jobEventConfig);
return springJobScheduler;
}
}
3.代码
package com.itheima.scheduler.elasticjob.springboot.config;
import com.dangdang.ddframe.job.reg.base.CoordinatorRegistryCenter;
import com.dangdang.ddframe.job.reg.zookeeper.ZookeeperConfiguration;
import com.dangdang.ddframe.job.reg.zookeeper.ZookeeperRegistryCenter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* @author Administrator
* @version 1.0
**/
@Configuration
public class ElasticJobRegistryCenterConfig {
//zookeeper链接字符串 localhost:2181
private String ZOOKEEPER_CONNECTION_STRING = "localhost:2181" ;
//定时任务命名空间
private String JOB_NAMESPACE = "elastic-job-example-java";
//zk的配置及创建注册中心
@Bean(initMethod = "init")
public CoordinatorRegistryCenter setUpRegistryCenter(){
//zk的配置
ZookeeperConfiguration zookeeperConfiguration = new ZookeeperConfiguration(ZOOKEEPER_CONNECTION_STRING, JOB_NAMESPACE);
//创建注册中心
CoordinatorRegistryCenter zookeeperRegistryCenter = new ZookeeperRegistryCenter(zookeeperConfiguration);
return zookeeperRegistryCenter;
}
}
2.5 启动类
2.6 配置连接
2.7 启动zk
2.8 测试
1.启动application服务,查看打印log:
三 多实例测试
3.1