Spring MVC（Spring Boot）——RequestMapping继承

Question

Edit : please read the question curefully, I don't need answers that repeat what I wrote.

Looking aroung the web I found quite a confusion about this subject. What I'm looking for is a nice way to extend the value of a Controller 's RequestMapping annotation.

Such as:

@Controller
@RequestMapping("/api")
public class ApiController {}

@Controller
@RequestMapping("/dashboard")
public class DashboardApiController extends ApiController {}

The result should be ("/api/dashboard") .

This approach apparently simply override the RequestMapping value. A working approach may be to not put a RequestMapping annotation on the derived class.

@Controller
public class DashboardApiController extends ApiController
{
   @GetMapping("/dashboard")
   public String dashboardHome() {
      return "dashboard";
   }

   ... other methods prefixed with "/dashboard"
}

Is this the only feasible approach? I don't really like it.

Answer 1

This is not the elegant solution you're looking for, but here's a functional solution I used.

@Controller
@RequestMapping(BASE_URI)
public class ApiController {
   protected final static String BASE_URI = "/api";
}

@Controller
@RequestMapping(ApiController.BASE_URI + "/dashboard")
public class DashboardApiController extends ApiController {}

Answer 2

Values get overridden in the subclasses and not appended. You would need to specify the full path in the child class.

Answer 3

You can achieve what you are trying to by adding

@Controller
@RequestMapping("/api")
public class DashboardApiController extends WhateverClassWithWhateverMapping
{
   @RequestMapping("/dashboard")
   public String dashboardHome() {
      return "dashboard";
   }

}

In this case it will be "/api/dashboard".

Values for the exact same parameter override on subclasses, they don't accumulate