java - Spring override properties at runtime and keep them persistent -

I am using Spring 3.2.8 and keep my settings in a property file. Now I want to override some of them over runtime, I want to overwrite the old values ​​in the properties file and keep the new values ​​constant.

How can I do this in the spring? Some properties I inject with @value and get others with MessageSource.getMessage (string, object [], locale). Beans are instantiated with these values ​​already. How can I access properties, store them, and update all the beans systems?

Thank you!

OK, when I give your follow-up answer, I will keep it simple enough and before spring Only you will know. I will make some assumptions that the annotation configuration is right for you.

In my example, I will consider all of the properties that you want to configure which ServerConfiguration and initially server.properties Is read on

Then part 1, I define a bean named ServerProperties which is the value in the injection value from server.properties .

Such:

  @Component public class ServerProperties {@Value ("$ {server .IP}}"); Private string ipAddress; ... Public Zero Setupdress (String IPadress) {this.ipAddress = ipAddress; } Public string getIpAddress () {return this.ipAddress; }  

}

Second, depending on these properties, I use @ value instead of using ServerProperties Code> example:

  @Component public class configuration {@ Autoward Private Server Properties Server Properties; @PostConstruct Public Zero init () (if serverProperties.getIpAddress (.) Equals ("localhost") {...} else {...}}}  

Third, I will disclose A simple controller in which serverproperties is injected so that you can use your web page to update system properties eg:

 < Code> @Controller public class UpdateProperties {@AutoWired Private Server Properties Server References; @RequestMapping ("/ updateProperties") Public String UpdateProperties () {ServerProperties.setIpAddress (...); Return "Full";}  

Finally,

  @Component public class when I close To flush the existing property value, I will use the  ServerProperties  on  @PreDestroy  to open ServerProperties {@PreDestroy Public Zero () {...} Open the file and type P Roperties for the server. Properties}}  

You should give a framework for what you need. I'm sure it can be touched, but you will find it there.