在没有 spring 的情况下设置活动配置文件

Question

Our web app need to run on two different servers. There are also two different properties files for those servers, like application.prd1.properties and application.prd1.properties. I do not use spring boot. So I can not use -Dspring.profiles.active=prd1 script.

Now I am getting the properties file like below image

How can I use two different properties files on two different servers without spring boot?

Answer 1

I suppose you have a jar jar file with your application. Given that, you can create a script to run it based on the server.

In the entry point of the application you can parse the arguments:

public static void Main(String[] args){
    if (args.length == 1)
        System.exit(1);

    String server = args[1];
    init(server);
}

Then, the init will be a little bit different:

static void init(String server) {
ResourceBundle resourceBundle;
switch (server){
    case "server1":
        resourceBundle = ResourceBundle.getBundle("application.server1.properties");
        break;
    }
}

Note: Be aware that the above code does not compile.

Answer 2

I have defined local variable for different servers like -DENV=prd1 and -DENV=prd2

public static void init(String server) {
  String env = System.getProperty("ENV")
  ResourceBundle res = ResourceBundle.getBundle("application." + env );
}