所有属性的@Value的默认值

If we don't have a value for a property we get below error. This error can be avoided by setting a colon : with or without a default value. Is there a way we can set default value for all the properties that way my application need not rely on the developer to specify :?

Could not resolve placeholder

如果有更好的方法可以解决此问题,请告诉我。