why will method be executed when the previous method return a result?

when I visit: http://localhost:3000/api/user/all?id=123 the result is ‘{“id”:“all”,“flag”:“getOne”}’,but there is a Error: Can’t set headers after they are sent. why will Method:getAll be executed when Method:getOne return a result?

import {Controller, JsonResponse, Param, Get, QueryParam} from "routing-controllers";

@Controller('/user')
export class UserController {

    @Get("/:id")
    @JsonResponse()
    getOne(@Param("id") id:string) {
        console.log('getOne');
        return {id:id,flag:'getOne'};
    }

    @Get("/all")
    getAll(@QueryParam("id") id:number) {
        console.log('getAll');
        return {id:id,flag:'getAll'};
    }
}

[Diluka]

Now, I understand the design. thx I previously use express not in the proper way. It needs to execute middlewares in the both sides of route.

[pleerock]

because both your actions satisfy executed route.

when you access user/all it satisfies for both /:id and all. How can id know if your “all” isn’t id?

You can solve it either by using another route for all, either to specify regexp to “id” what it can be, and what it can’t. For example: /users/:id(\\d+)" if id can be only a number