本文介紹了SpringBoot集成ElaticJob定時器的實現代碼，分享給大家，具體如下:
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一樣的）
# 配置配置數據源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# 配置定時器規則simpleJob: cron: 0/5 * * * * ? shardingTotalCount: 1 shardingItemParameters: 0=1
開始寫代碼
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;/** * 註冊中心配置* 用於註冊和協調作業分佈式行為的組件，目前僅支持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;/** * 如果想把作業運行的內容寫到DB中，我們需要用到另一個構造器， * 同時定義自己的JobEventConfiguration， * 目前來說實現這個接口的只有一個類JobEventRdbConfiguration， * 通過這個可以將作業運行的痕跡進行持久化到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 { /** * 註冊中心*/ @Resource private ZookeeperRegistryCenter regCenter; /** * job事件配置*/ @Resource private JobEventConfiguration jobEventConfiguration; /** * 微信access token獲取任務對象* */ @Resource private TestSimpleJob simpleJob; /** * * @param cron 定時任務cron配置* @param shardingTotalCount 任務分片數* @param shardingItemParameters 任務分片參數* @return JobScheduler 任務調度器*/ @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 任務調度類* @param cron 定時任務cron配置* @param shardingTotalCount 任務分片數* @param shardingItemParameters 任務分片參數* @return LiteJobConfiguration 任務配置*/ 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，定時器任務本身
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; //任務就是每5秒執行一次控制台輸出1，2，3…… @Override public void execute(ShardingContext shardingContext) { count++; System.out.println("task " + count); }}最後在Docker下安裝Zookeeper
安裝腳本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
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持武林網。