Springboot在有参构造方法类中使用@Value注解取值

@Component
class A {
   @Value("${user.value}")
   private String configValue;
   
   public void test() {
      System.out.println(configValue);
   }
}

@Component
class A {
   @Value("${user.value}")
   private String configValue;

   private String s;

   public A(String s) {
      this.s = s;
   }
   public void test() {
      System.out.println(s);
      System.out.println(configValue);
   }
}

@Configuration
public class AConfig {
  @Bean(name="abc")
  DataOpration abcA() {
    return new A("abc");
  }
}

@Component
public class SpringUtil implements ApplicationContextAware {

  private static ApplicationContext applicationContext;

  @Override
  public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
    if(SpringUtil.applicationContext == null) {
      SpringUtil.applicationContext = applicationContext;
    }
  }

  public static ApplicationContext getApplicationContext() {
    return applicationContext;
  }

  //通过name获取 Bean.
  public static Object getBean(String name){
    return getApplicationContext().getBean(name);
  }
}