我在Spring Boot应用程序中有一个数据源配置类。下面的代码段

密码正在从服务中获取，并且当我重新启动Spring Boot应用程序（或JVM）时，密码的更改不会刷新。任何想法？

 @Configuration
 @EnableTransactionmanagement
    public class TestDBConfig
    {
      ..............
      @Value("${URL}")
        private String dbURL;
       .........
    @Bean
    @RefreshScope
    public DataSource dataSource() {
     DriverManagerDataSource driverManagerDataSourc = new DriverManagerDataSource();

            driverManagerDataSourc.setDriverClassname(oracleDriver);
            driverManagerDataSourc.setUrl(dbURL);
            driverManagerDataSourc.setusername(dbusername);
            dataSource.setPassword(dbPassword);
            if (isPWService != null && isPWService.equalsIgnoreCase("N")) {

                driverManagerDataSourc.setPassword(dbPassword);
            } else {

                driverManagerDataSourc.setPassword(getPWService());
            }

            return dataSource;
        }
    public String getPWService() {
        .........
    }
        }