无法从spring启动应用程序访问yaml值

Question

我为hourString和minuteString获取null。请指教。

以下是我的application.yaml文件： -

inbound:
    out:
        path: inbound/out
    processed:
        path: inbound/processed
    read:
        path: inbound/read
    hour:
        value: 17
    minute:
        value: 00

以下是我的Java类： -

public class Application {

 @Value("${inbound.hour.value}")    
private static String hourString;
 @Value("${inbound.minute.value}")
private static String minuteString;


public static void main(String[] args) {


    Calendar today = Calendar.getInstance();
    int hour_of_day =Integer.parseInt(hourString);
    -------
    -------
   }