如何对返回整数的方法执行post请求

我试着做了如下的发帖请求:

http://localhost:8080/root/initVar/id/2->error
http://localhost:8080/root/initVar/id?2->error

但是当我从方法中返回Int数据类型时,它不起作用。 请让我知道如何修正这个错误。

请注意,这个方法返回Int

:

@RestController
@RequestMapping("root")
class Controller1 {

val sayHiLazy by lazy {
    "hi from get"
}

@GetMapping(value = "/sayHi")
@ResponseBody
fun  sayHi() : String {
    return sayHiLazy
}

@PostMapping("/initVar/id")
@ResponseBody
fun initVar(@PathVariable id : Int) : Int {
    return 11
}
}to use spring annotation with koltin in intellij. i used spring annotation with java projects in intellij. but for koltin, it does not work.

在下面的示例中,HelloController带有红色下划线,我收到以下警告:

    classes annotated with @Configurations cannto be implicily subclassed and must be final

请让我知道怎么做

控制器1

@SpringBootConfiguration
@RequestMapping("/app")
public class HelloController {

@RequestMapping(value = "/hello")
fun SayHello(): String {
    return "success"
}
}