2022.06.27—重新修正文章错误 这个文章写过一次,搬站时数据丢失了,也就没精力重写了,现在只是粗略写下
系统自带的定时任务:对于分布式的项目,可能会存在重复定时执行问题 所以:使用xxl-job解决,单体项目也可以用xxl-job,微服务需要准备注册中心,boot无需
<dependency>
<groupId>com.xuxueli</groupId>
<artifactId>xxl-job-core</artifactId>
<version>2.2.0</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.54</version>
</dependency>
xxl:
job:
accessToken: default_token
admin:
addresses: http://127.0.0.1:8080/xxl-job-admin
executor:
address:
appname: myserver
ip:
logpath: /data/applogs/xxl-job/jobhandler
logretentiondays: 30
port: 9998
package com.zb.job;
import com.xxl.job.core.executor.impl.XxlJobSpringExecutor;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
/**
* xxl-job config
*
* @author xuxueli 2017-04-28
*/
@Configuration
public class XxlJobConfig {
private Logger logger = LoggerFactory.getLogger(XxlJobConfig.class);
@Value("${xxl.job.admin.addresses}")
private String adminAddresses;
@Value("${xxl.job.accessToken}")
private String accessToken;
@Value("${xxl.job.executor.appname}")
private String appname;
@Value("${xxl.job.executor.address}")
private String address;
@Value("${xxl.job.executor.ip}")
private String ip;
@Value("${xxl.job.executor.port}")
private int port;
@Value("${xxl.job.executor.logpath}")
private String logPath;
@Value("${xxl.job.executor.logretentiondays}")
private int logRetentionDays;
@Bean
public XxlJobSpringExecutor xxlJobExecutor() {
logger.info(">>>>>>>>>>> xxl-job config init.");
XxlJobSpringExecutor xxlJobSpringExecutor = new XxlJobSpringExecutor();
xxlJobSpringExecutor.setAdminAddresses(adminAddresses);
xxlJobSpringExecutor.setAppname(appname);
xxlJobSpringExecutor.setAddress(address);
xxlJobSpringExecutor.setIp(ip);
xxlJobSpringExecutor.setPort(port);
xxlJobSpringExecutor.setAccessToken(accessToken);
xxlJobSpringExecutor.setLogPath(logPath);
xxlJobSpringExecutor.setLogRetentionDays(logRetentionDays);
return xxlJobSpringExecutor;
}
/**
* 针对多网卡、容器内部署等情况,可借助 "spring-cloud-commons" 提供的 "InetUtils" 组件灵活定制注册IP;
*
* 1、引入依赖:
* <dependency>
* <groupId>org.springframework.cloud</groupId>
* <artifactId>spring-cloud-commons</artifactId>
* <version>${version}</version>
* </dependency>
*
* 2、配置文件,或者容器启动变量
* spring.cloud.inetutils.preferred-networks: 'xxx.xxx.xxx.'
*
* 3、获取IP
* String ip_ = inetUtils.findFirstNonLoopbackHostInfo().getIpAddress();
*/
}
对于这里看不明白的,或者上面一些参数看不明白的,可以先看后台设置部分
test1是后台写JobHandler填的名字 ReturnT和(String param)不可以修改和去掉,否则启动报错
@XxlJob("test1")
public ReturnT<String> testHandler(String param) throws Exception {
System.out.println("定时执行");
return ReturnT.SUCCESS;
}
将传过来的数据封装集合或者实体类进行处理
@XxlJob("test2")
public ReturnT<String> tsetyurl(String param){
//传来多个的数据转成集合,这里使用了阿里巴巴json
List<No2> no1 = JSONArray.parseArray(param,No2.class);
no1.forEach(System.out::println);
// 传来的单个数据转一个实体,这里使用了阿里巴巴json
// No2 no1 = JSONObject.parseObject(param, No2.class);
// System.out.println(no1.toString());
return null;
}
AppName:填Yml里面配置的appname值 注意:自动注册需要等待xxl-job自动查找,大概10-20秒,才会显示OnLine 机器地址
如果要查看执行日志,比如遇到报错什么的,详细信息