Spring MVC走向错误动作

我有以下控制器(遵循Rails命名约定)

@RestController("/vehicles")
public class VehiclesController {

    @GetMapping
    public Iterable<Vehicle> index(
        @RequestParam(defaultValue = "1") int page,
        @RequestParam(defaultValue = "25") int per
    ) {
        ...
    }

    @GetMapping("/{id}")
    public Vehicle show(@PathVariable long id) {
        ...
    }

    @PostMapping
    public Vehicle create(@RequestBody Vehicle vehicle) {
        ...
    }

    @PatchMapping("/{id}")
    public void update(@PathVariable long id, @RequestBody Vehicle params) {
        ...
    }

    @DeleteMapping("/{id}")
    public void destroy(@PathVariable long id) {
        ...
    }

}

GET /vehicles

我希望请求被路由到 index 方法,但它实际上被路由到 show 方法无法提供内容,因为框架无法转换 "vehicles" long . 以下是错误消息:

Failed to bind request element: org.springframework.web.method.annotation.MethodArgumentTypeMismatchException: Failed to convert value of type 'java.lang.String' to required type 'long'; nested exception is java.lang.NumberFormatException: For input string: "vehicles"

我的代码有什么错误吗?提前谢谢。