Spring Autowire within Method
===

My application has a interface as below.

    public interface MainInterface
    {
         void someMethod();
    }

Then, i have number of implementations of this interface.

    @Service    
    public class ImplClass1 implements MainInterface
    {
       @Override
       public void someMehtod()
       {
          //Execution of code
       }
    }

    @Service    
    public class ImplClass2 implements MainInterface
    {
       @Override
       public void someMehtod()
       {
          //Execution of code
       }
    }
    
    @Service
    public class ImplClass3 implements MainInterface
    {
       @Override
       public void someMehtod()
       {
          //Execution of code
       }
    }
    
Below is a controller.

    @Controller
    public class MainController
    {
         MainInterface implObj;

         @RequestMapping("service1")
         public void Service1Handler()
         {
             //Replace below with @Autowire
             implObj = new ImplClass1();
         }
    
         @RequestMapping("service2")
         public void Service1Handler()
         {
             //Replace below with @Autowire
             implObj = new ImplClass2();
         }
    
         @RequestMapping("service3")
         public void Service1Handler()
         {
             //Replace below with @Autowire
             implObj = new ImplClass3();
         }
    }

As mentioned in comment of each method i want to initialize it using spring.
This is just an example. In my real time application i have 12 implementations of a interface and 6 methods in a controller.

Can you please guide how can i use autowire feature at method level or suggest any other best way around.

Thanks