前面都能正常执行到这里卡住了，无法启动成功

Question

@RestController @RequestMapping("/hello") public class HelloController {    /* @Value("${cupSize}")     private String cupSize;     @Value("${age}")     private int age;     @Value("${content}")     private String content;*/     @Autowired     private GirlProperties girlProperties;     @GetMapping("/say/${id}")     public String say(@PathVariable("id")Integer id){         //return girlProperties.getCupSize();         //return "index";         return "id: " + id;     } }

Answer 1

@GetMapping("/say/${id}")更改为@GetMapping("/say/{id}")

@GetMapping("/say/{id}")	
public String say(@PathVariable("id") Integer id) {		
    return "id=" + id;	
}

Answer 2

什么错？报什么异常