一、nacos配置

server:
  port: 32031
spring:
  application:
    name: t1
  profiles:
    active: local
  cloud:
    nacos:
      config:
        prefix: t1
        group: test
        namespace: YKF
        file-extension: properties
      server-addr: nacos1.test:8848,nacos2.test:8848,nacos3.test:8848
    loadbalancer:
      ribbon:
        enabled: false

在这里插入图片描述

二、XxlJobConfig

@Slf4j
@ComponentScan(basePackages = "*.xxljob")
@Configuration
@RefreshScope  //动态刷新
public class XxlJobConfig {

    @Value("${xxl.job.admin.addresses}")
    private String adminAddresses;

    @Value("${xxl.job.executor.appname}")
    private String appName;

    @Value("${xxl.job.executor.ip}")
    private String ip;

    @Value("${xxl.job.executor.port}")
    private int port;

    @Value("${xxl.job.accessToken}")
    private String accessToken;

    @Value("${xxl.job.executor.logpath}")
    private String logPath;

    @Value("${xxl.job.executor.logretentiondays}")
    private int logRetentionDays;


    @Bean
    public XxlJobSpringExecutor xxlJobExecutor() {
        log.info(">>>>>>>>>>> xxl-job config init.");
        XxlJobSpringExecutor xxlJobSpringExecutor = new XxlJobSpringExecutor();
        xxlJobSpringExecutor.setAdminAddresses(adminAddresses);
        xxlJobSpringExecutor.setAppName(appName);
        xxlJobSpringExecutor.setIp(ip);
        xxlJobSpringExecutor.setPort(port);
        xxlJobSpringExecutor.setAccessToken(accessToken);
        xxlJobSpringExecutor.setLogPath(logPath);
        xxlJobSpringExecutor.setLogRetentionDays(logRetentionDays);
        return xxlJobSpringExecutor;
    }

}

1.@Value给静态变量赋值，不能直接写在变量上，应该放在变量的set()方法上，且该方法不能被static修饰。其中需要在类上加入@Component注解。

2.通过@Value(“${xxxx}”)

可以获取属性文件中对应的值，但是如果属性文件中没有这个属性，则会报错。可以通过赋予默认值解决这个问题，如@Value("${xxxx:yyyy}")
比如

    @Value("${mth.common.thread.corePoolSize:16}")
	private int corePoolSize;

	@Value("${mth.common.thread.maxPoolSize:100}")
	private int maxPoolSize;

3.@RefreshScope注解能帮助我们做局部的参数刷新，但侵入性较强，需要开发阶段提前预知可能的刷新点，并且该注解底层是依赖于cglib进行代理的，所以不要掉入cglib的坑，出现刷了也不更新情况；

参考文章
https://blog.csdn.net/chuixue24/article/details/107386045
https://www.cnblogs.com/weihuang6620/p/13723219.html
https://www.jianshu.com/p/dbf3933aecb3

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