将kubernetes secret / env用于身份验证到java应用程序中

我有一个spring.boot使用Kubernetes的java 应用程序，我配置了这个.yaml文件

• name: ACTUATOR_USERNAME
  valueFrom:

  secretKeyRef:
    name: actuator
    key: username

• name: ACTUATOR_PASSWORD
  valueFrom:

  secretKeyRef:
    name: actuator
    key: password

  将此属性添加到我的 application.propertis

security.user.name=${ACTUATOR_USERNAME}
security.user.password=${ACTUATOR_PASSWORD}
在服务器端创建了secret，如何在我的类中检索这个值

package com.greenqloud.usage.healthcheck;

import org.springframework.boot.actuate.autoconfigure.security.servlet.EndpointRequest;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

@Configuration
@EnableWebSecurity
public class ActuatorSecurity extends WebSecurityConfigurerAdapter {

@Override
protected void configure(HttpSecurity http) throws Exception {
    http.requestMatcher(EndpointRequest.toAnyEndpoint()).authorizeRequests()
            .anyRequest().hasRole("USER")
            .and()
            .httpBasic();
}

@Override
public void configure(AuthenticationManagerBuilder auth) throws Exception {
    System.out.println("actuator username: " + System.getenv("ACTUATOR_USERNAME"));
    System.out.println("actuator password: " + System.getenv("ACTUATOR_PASSWORD"));

    auth.inMemoryAuthentication()
            .withUser("actuator").password("{noop}actuator123").roles("USER");
}

}
我发现的唯一方法就是使用System.out.getenv("ACTUATOR_USERNAME")但是我确定有更好的方法来实现这一目标吗？