将 Spring Beans 映射到 Integer 标识符

Question

My application uses a set of command classes with unique integer identifiers to execute different tasks. Commands are stored in an enum class of form

public enum CommandType {

    COMMAND1(1000, Command1.class),
    COMMAND2(1001, Command2.class),
    ...

In the legacy code, we were constructing the corresponding command instance using the command id when a request is received. Recently I added Spring support and now each command is marked with @Controller annotation. Instead of constructing a new instance, now we do

Class<? extends Command> commandClass = commandType.getCommandClass();    
applicationContext.getBean(commandClass);

Command ids are stored in a hashmap and we obtain the corresponding commands from this map

private Map<Integer, CommandType> commandTypeMap = new HashMap<>();

What I wonder is instead of using a hashmap, can I utilize Spring. Is there an easy and graceful way to map the command beans into unique command ids in the Spring Framework, so that I can acquire the command by passing the id into Spring?

Answer 1

@Controller annotation can have as parameter the bean name

Example:

@Controller("1000") 
public class COMMAND1{
}

and then you can get instance of this bean by using his name

Command1 cmd1=(Command1) applicationContext.getBean("1000");