springboot整合xxl-job 分布式任务调度

		<dependency>
            <groupId>com.xuxueli</groupId>
            <artifactId>xxl-job-core</artifactId>
            <version>2.3.0</version>
        </dependency>

xxl:
  job:
    accessToken:
    admin:
      addresses: http://127.0.0.1:8095/xxl-job-admin 
    executor:
      address:
      appname: xxl-job-invoice-api
      ip:
      logpath: /data/applogs/xxl-job/jobhandler
      logretentiondays: 30
      port: 10001

addresses：调度中心地址[选填]，如调度中心集群部署存在多个地址则用逗号分隔。执行器将会使用该地址进行"执行器心跳注册"和"任务结果回调"，为空则关闭自动注册

appname：执行器 [选填]，执行器心跳注册分组依据，为空则关闭自动注册
ip：默认为空表示自动获取，多网卡时可手动设置指定IP，该IP不会绑定Host仅作为通讯实用，地址信息用于 “执行器注册” 和 “调度中心请求并触发任务”
port：执行器端口号 [选填]，小于等于0则自动获取，默认端口为9999，单机部署多个执行器时，注意要配置不同执行器端口
logpath：执行器运行日志文件存储磁盘路径 [选填] ，需要对该路径拥有读写权限，为空则使用默认路径
logretentiondays：执行器日志保存天数 [选填] ，值大于3时生效，启用执行器Log文件定期清理功能，否则不生效

accessToken：执行器通讯[选填]，非空时启用

@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;
    }
}

package com.xxl.job.executor.service.jobhandler;

import com.xxl.job.core.context.XxlJobHelper;
import com.xxl.job.core.handler.annotation.XxlJob;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.Arrays;
import java.util.concurrent.TimeUnit;

/**
 * XxlJob开发示例（Bean模式）
 *
 * 开发步骤：
 *      1、任务开发：在Spring Bean实例中，开发Job方法；
 *      2、注解配置：为Job方法添加注解 "@XxlJob(value="自定义jobhandler名称", init = "JobHandler初始化方法", destroy = "JobHandler销毁方法")"，注解value值对应的是调度中心新建任务的JobHandler属性的值。
 *      3、执行日志：需要通过 "XxlJobHelper.log" 打印执行日志；
 *      4、任务结果：默认任务结果为 "成功" 状态，不需要主动设置；如有诉求，比如设置任务结果为失败，可以通过 "XxlJobHelper.handleFail/handleSuccess" 自主设置任务结果；
 *
 * @author xuxueli 2019-12-11 21:52:51
 */
@Component
public class SampleXxlJob {
    private static Logger logger = LoggerFactory.getLogger(SampleXxlJob.class);
    /**
     * 1、简单任务示例（Bean模式）
     */
    @XxlJob("demoJobHandler")
    public void demoJobHandler() throws Exception {
        XxlJobHelper.log("XXL-JOB, Hello World.");

        for (int i = 0; i < 5; i++) {
            XxlJobHelper.log("beat at:" + i);
            TimeUnit.SECONDS.sleep(2);
        }
        // default success
    }
}

CREATE TABLE `xxl_job_lock` (
  `lock_name` varchar(50) NOT NULL COMMENT '锁名称',
  PRIMARY KEY (`lock_name`)
) ENGINE=InnoDB;

INSERT INTO `xxl_job_lock` ( `lock_name`) VALUES ( 'schedule_lock');

Connection conn = null;
Boolean connAutoCommit = null;
PreparedStatement preparedStatement = null;

boolean preReadSuc = true;
try {

 conn = XxlJobAdminConfig.getAdminConfig().getDataSource().getConnection();
 connAutoCommit = conn.getAutoCommit();
 conn.setAutoCommit(false);

 preparedStatement = conn.prepareStatement(  "select * from xxl_job_lock where lock_name = 'schedule_lock' for update" );
 preparedStatement.execute();

 // do something
} catch (Exception e) {
                        
} finally {

    // commit
    if (conn != null) {
        try {
            conn.commit();
        } catch (SQLException e) {
                                
        }
        try {
            conn.setAutoCommit(connAutoCommit);
        } catch (SQLException e) {
                                
        }
        try {
            conn.close();
        } catch (SQLException e) {
                                
        }
    }

    // close PreparedStatement
    if (null != preparedStatement) {
        try {
            preparedStatement.close();
        } catch (SQLException e) {
            
        }
    }
}