POM文件配置
<?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.example</groupId> <artifactId>demojob</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>jar</packaging> <name>demojob</name> <description>Demo project for Spring Boot</description> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.0.2.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-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <!--elastic-job--> <dependency> <artifactId>elastic-job-common-core</artifactId> <groupId>com.dangdang</groupId> <version>2.1.5</version> </dependency> <dependency> <artifactId>elastic-job-lite-core</artifactId> <groupId>com.dangdang</groupId> <version>2.1.5</version> </dependency> <dependency> <artifactId>elastic-job-lite-spring</artifactId> <groupId>com.dangdang</groupId> <version>2.1.5</version> </dependency> <dependency> <artifactId>elastic-job-cloud-executor</artifactId> <groupId>com.dangdang</groupId> <version>2.1.5</version> </dependency> <!--mariadb--> <dependency> <groupId>org.mariadb.jdbc</groupId> <artifactId>mariadb-java-client</artifactId> <version>1.5.4</version> </dependency> <!--druid--> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.9</version> </dependency> <!--mybatis plus--> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatisplus-spring-boot-starter</artifactId> <version>1.0.5</version> </dependency> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus</artifactId> <version>2.1.9</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build></project>
yaml文件配置（也可以用application.properties一样的）
# 配置配置数据源spring: datasource: type: com.alibaba.druid.pool.DruidDataSource driver-class-name: org.mariadb.jdbc.Driver name: elastic-job-event url: jdbc:mariadb://127.0.0.1:3306/elasticjob username: root password: 123456 druid: validationQuery: SELECT 1 initialSize: 10 minIdle: 10 maxActive: 200 minEvictableIdleTimeMillis: 180000 testOnBorrow: false testWhileIdle: true removeAbandoned: true removeAbandonedTimeout: 1800 logAbandoned: true poolPreparedStatements: true maxOpenPreparedStatements: 100# 配置ZookeeperregCenter: serverList: localhost:2181 namespace: hulk_order_task# 配置定时器规则simpleJob: cron: 0/5 * * * * ? shardingTotalCount: 1 shardingItemParameters: 0=1
开始写代码
RegistryCenterConfig
package com.example.demojob.config;import com.dangdang.ddframe.job.reg.zookeeper.ZookeeperConfiguration;import com.dangdang.ddframe.job.reg.zookeeper.ZookeeperRegistryCenter;import org.springframework.beans.factory.annotation.Value;import org.springframework.boot.autoconfigure.condition.ConditionalOnExpression;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;/**
* 注册中心配置
* 用于注册和协调作业分布式行为的组件，目前仅支持Zookeeper。
* @author shudalei
*/@Configuration@ConditionalOnExpression("'${regCenter.serverList}'.length() > 0")
public class RegistryCenterConfig {
@Bean(initMethod = "init")
public ZookeeperRegistryCenter regCenter(@Value("${regCenter.serverList}") final String serverList,
@Value("${regCenter.namespace}") final String namespace) { return new ZookeeperRegistryCenter(new ZookeeperConfiguration(serverList, namespace));
}
}JobEventConfig
package com.example.demojob.config;import com.dangdang.ddframe.job.event.JobEventConfiguration;import com.dangdang.ddframe.job.event.rdb.JobEventRdbConfiguration;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import javax.annotation.Resource;import javax.sql.DataSource;/**
* 如果想把作业运行的内容写到DB中，我们需要用到另一个构造器，
* 同时定义自己的JobEventConfiguration，
* 目前来说实现这个接口的只有一个类JobEventRdbConfiguration，
* 通过这个可以将作业运行的痕迹进行持久化到DB的操作。
* @author shudalei
*/@Configurationpublic class JobEventConfig {
@Resource
private DataSource dataSource;
@Bean
public JobEventConfiguration jobEventConfiguration() { return new JobEventRdbConfiguration(dataSource);
}
}SimpleJobConfig
package com.example.demojob.config;import com.dangdang.ddframe.job.config.JobCoreConfiguration;import com.dangdang.ddframe.job.config.simple.SimpleJobConfiguration;import com.dangdang.ddframe.job.event.JobEventConfiguration;import com.dangdang.ddframe.job.lite.api.JobScheduler;import com.dangdang.ddframe.job.lite.config.LiteJobConfiguration;import com.dangdang.ddframe.job.lite.spring.api.SpringJobScheduler;import com.dangdang.ddframe.job.reg.zookeeper.ZookeeperRegistryCenter;import com.example.demojob.job.TestSimpleJob;import org.springframework.beans.factory.annotation.Value;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import javax.annotation.Resource;@Configurationpublic class SimpleJobConfig { /**
* 注册中心
*/
@Resource
private ZookeeperRegistryCenter regCenter; /**
* job事件配置
*/
@Resource
private JobEventConfiguration jobEventConfiguration; /**
* 微信access token获取任务对象
*
*/
@Resource
private TestSimpleJob simpleJob; /**
*
* @param cron 定时任务cron配置
* @param shardingTotalCount 任务分片数
* @param shardingItemParameters 任务分片参数
* @return JobScheduler 任务调度器
*/
@Bean(initMethod = "init") public JobScheduler simpleJobScheduler(@Value("${simpleJob.cron}") final String cron,
@Value("${simpleJob.shardingTotalCount}") final int shardingTotalCount,
@Value("${simpleJob.shardingItemParameters}") final String shardingItemParameters) { return new SpringJobScheduler(simpleJob, regCenter,
getLiteJobConfiguration(simpleJob.getClass(), cron, shardingTotalCount, shardingItemParameters),
jobEventConfiguration);
} /**
*
* @param jobClass 任务调度类
* @param cron 定时任务cron配置
* @param shardingTotalCount 任务分片数
* @param shardingItemParameters 任务分片参数
* @return LiteJobConfiguration 任务配置
*/
private LiteJobConfiguration getLiteJobConfiguration(final Class<? extends com.dangdang.ddframe.job.api.simple.SimpleJob> jobClass, final String cron, final int shardingTotalCount, final String shardingItemParameters) { return LiteJobConfiguration
.newBuilder( new SimpleJobConfiguration(JobCoreConfiguration.newBuilder(jobClass.getName(), cron, shardingTotalCount)
.shardingItemParameters(shardingItemParameters).build(), jobClass.getCanonicalName()))
.overwrite(true).build();
}
}TestSimpleJob，定时器任务本身
package com.example.demojob.job;import com.dangdang.ddframe.job.api.ShardingContext;import com.dangdang.ddframe.job.api.simple.SimpleJob;import org.springframework.stereotype.Component;@Componentpublic class TestSimpleJob implements SimpleJob { private int count; //任务就是每5秒执行一次控制台输出1，2，3……
@Override
public void execute(ShardingContext shardingContext) {
count++;
System.out.println("task " + count);
}
}最后在Docker下安装 Zookeeper
安装脚本compose文件如下
version: '2'services: zookeeper01: image: zookeeper restart: always hostname: zookeeper01 ports: - 2181:2181 environment: ZOO_MY_ID: 1 ZOO_SERVERS: server.1=0.0.0.0:2888:3888 server.2=zookeeper02:2888:3888 server.3=zookeeper03:2888:3888 zookeeper02: image: zookeeper restart: always hostname: zookeeper02 ports: - 2182:2181 environment: ZOO_MY_ID: 2 ZOO_SERVERS: server.1=zookeeper01:2888:3888 server.2=0.0.0.0:2888:3888 server.3=zookeeper03:2888:3888 zookeeper03: image: zookeeper restart: always hostname: zookeeper03 ports: - 2183:2181 environment: ZOO_MY_ID: 3 ZOO_SERVERS: server.1=zookeeper01:2888:3888 server.2=zookeeper02:2888:3888 server.3=0.0.0.0:2888:3888
作者：面皮大师
链接：https://www.jianshu.com/p/62ebedc764b7