本文介绍了SpringBoot集成ElaticJob定时器的实现代码，分享给大家，具体如下:
POM文件配置
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<?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）
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# 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Zookeeper
regCenter:
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
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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
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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
*/
@Configuration
public class JobEventConfig {
@Resource
private DataSource dataSource;
@Bean
public JobEventConfiguration jobEventConfiguration() {
return new JobEventRdbConfiguration(dataSource);
}
}
SimpleJobConfig
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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;
@Configuration
public 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
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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;
@Component
public 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
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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
