分布式定时任务框架 Elastic-Job (2) Spring / Spring Boot 集成

一、Spring 集成

1.1 创建Spring项目

IDEA为例：文件 -> 新建项目 -> Maven -> 原型中创建 -> org.apache.maven.archetypes:maven-archetype-webapp

1.2 添加依赖

添加spring 依赖

<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-context</artifactId>
  <version>5.3.14</version>
</dependency>
<dependency>
  <groupId>org.springframework</groupId>
  <artifactId>spring-web</artifactId>
  <version>5.3.14</version>
</dependency>
<dependency>
  <groupId>org.projectlombok</groupId>
  <artifactId>lombok</artifactId>
  <version>1.18.22</version>
</dependency>
<dependency>
  <groupId>org.slf4j</groupId>
  <artifactId>slf4j-log4j12</artifactId>
  <version>1.7.32</version>
</dependency>

1.3 添加Elastic-Job依赖

<dependency>
  <groupId>com.dangdang</groupId>
  <artifactId>elastic-job-lite-core</artifactId>
  <version>2.1.5</version>
</dependency>
<dependency>
  <groupId>com.dangdang</groupId>
  <artifactId>elastic-job-lite-spring</artifactId>
  <version>2.1.5</version>
</dependency>

1.4 配置

配置web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Spring elastic-job</display-name>
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath*:spring-config.xml</param-value>
  </context-param>
  
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
</web-app>

配置spring-config.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:reg="http://www.dangdang.com/schema/ddframe/reg"
       xmlns:job="http://www.dangdang.com/schema/ddframe/job"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
       http://www.dangdang.com/schema/ddframe/reg
       http://www.dangdang.com/schema/ddframe/reg/reg.xsd
       http://www.dangdang.com/schema/ddframe/job
       http://www.dangdang.com/schema/ddframe/job/job.xsd
">
    <!--注册中心配置-->
    <reg:zookeeper server-lists="localhost:2181" namespace="spring-elasticjob" id="zkCenter"/>
    <!-- simple作业配置 -->
    <job:simple registry-center-ref="zkCenter" cron="0/10 * * * * ?" sharding-total-count="2" class="cn.flowboot.job.MySimpleJob"/>
</beans>


</beans>

其中在xsi:schemaLocation中添加schema,配置注册中心和 simple作业配置
MySimpleJob

package cn.flowboot.job;

import com.dangdang.ddframe.job.api.ShardingContext;
import com.dangdang.ddframe.job.api.simple.SimpleJob;
import lombok.extern.slf4j.Slf4j;

import java.time.LocalTime;


/**
 * <h1>My Simple Job</h1>
 *
 * @version 1.0
 * @author: Vincent Vic
 * @since: 2022/01/19
 */
@Slf4j
public class MySimpleJob implements SimpleJob {
   
    @Override
    public void execute(ShardingContext shardingContext) {
   
        log.info("SimpleJob %s 当前分片项 %d,总分片项 %d\n", LocalTime.now(),shardingContext.getShardingItem(),shardingContext.getShardingTotalCount());

    }
}

Spring Boot 集成

创建Spring Boot项目

IDEA为例：文件 -> 新建项目 -> Spring Initializr

添加依赖

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
</dependency>
<!--配置-->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-configuration-processor</artifactId>
</dependency>
<!-- elastic-job-lite-->
<dependency>
    <groupId>com.dangdang</groupId>
    <artifactId>elastic-job-lite-core</artifactId>
    <version>2.1.5</version>
</dependency>
<dependency>
   <groupId>com.dangdang</groupId>
   <artifactId>elastic-job-lite-spring</artifactId>
   <version>2.1.5</version>
</dependency>
<!-- 用于测试 -->
<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.13</version>
    <scope>test</scope>
</dependency>
<!-- 用于日志和实体 -->
<dependency>
    <groupId>org.projectlombok</groupId>
    <artifactId>lombok</artifactId>
    <version>1.18.22</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>