spring-boot - @RefreshScope 不起作用 - Spring Boot

Question

我正在遵循此处描述的方法:https://github.com/jeroenbellen/blog-manage-and-reload-spring-properties ，唯一的区别是，在我的例子中，属性被用于多个类，所以我把它们都放在一个实用程序类中 CloudConfig我使用 getter 来引用它的变量。这就是类的样子:

@Configuration
@RefreshScope
public class CloudConfig {

    static volatile int count; // 20 sec

    @Value("${config.count}")
    public void setCount(int count) {
        this.count = count;
    }

    public static int getCount() {
        return count;
    }

}

我使用变量 count在其他类中，如 CloudConfig.getCount() .我能够在启动时加载属性就好了，但我无法动态更新它们。谁能告诉我我做错了什么？如果不是制作这个配置类，我完全按照教程描述的那样做，一切正常，但我无法将它适应我的用例。谁能告诉我我错过了什么？

Answer 1

尝试使用 @ConfigurationProperties反而。
例如

@ConfigurationProperties(prefix="config")
public class CloudConfig {

    private Integer count;

    public Integer count() {
        return this.count;
    }

    public void setCount(Integer count) {
        this.count = count;
    }

}

reference doc from spring cloud状态:

@RefreshScope works (technically) on an @Configuration class, but it might lead to surprising behaviour: e.g. it does not mean that all the @Beans defined in that class are themselves @RefreshScope. Specifically, anything that depends on those beans cannot rely on them being updated when a refresh is initiated, unless it is itself in @RefreshScope (in which it will be rebuilt on a refresh and its dependencies re-injected, at which point they will be re-initialized from the refreshed @Configuration).