Spring REST Controller Mapping Based on Parameter Value

This can be implemented in Spring MVC with the params attribute of @RequestMapping, e.g.

@GetMapping(value = "/catalog", params = "type=product")
public List<Product> getProducts() {
  ...
}

You can also do the inverse, i.e. params = "type!=product" to match all other types.

Spring only matches request based on path and query parameters.

I think in your case you should try another approach, for example: /api/v1/catalog/product is more reasonable in this case.

I think best approach is to bind a HandlerInterceptor to the path "/api/vi/catalog". Here is an example Interceptor returns 404 response if parameter is not set to product:

@Component
public class ProductInterceptorHandler implements HandlerInterceptor {

@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
    if (!request.getParameter("type").equalsIgnoreCase("product")){
        response.setStatus(404);
        // DO WHATEVER YOU WANT TO INFORM USER THAT IS INVALID
        return false;
    }
    return true;
}

}

And you should bind it to the path inside your configuration class (in my case a SpringBootApplication that extends WebMvcConfigurerAdapter):

@SpringBootApplication

public class ASpringApplication extends WebMvcConfigurerAdapter implements CommandLineRunner {

public static void main(String[] args) {
    SpringApplication.run(ASpringApplication.class, args);
}



@Override
public void addInterceptors(InterceptorRegistry registry){
    registry.addInterceptor(new ProductInterceptorHandler()).addPathPatterns("/api/vi/catalog");
}
}

And finally a restcontroller method:

@RequestMapping(value = "/api/vi/catalog", method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
public ResponseEntity<Object> searchLocationIndexed(@RequestParam("type") String type ) throws Exception {

    return ResponseEntity.ok("ok");
}