SpringBoot中类型转换

@RestController
public class HelloController {

    @GetMapping("/hello")
    public void hello(Date date) {
        System.out.println(date);
    }
}

@Component
public class StringTransDate implements Converter<String, Date> {

    private SimpleDateFormat simpleDateFormat = new SimpleDateFormat("yyyy-MM-dd");

    @Override
    public Date convert(String s) {
        if (s != null && !"".equals(s)) {
            try {
                return simpleDateFormat.parse(s);
            } catch (ParseException e) {
                e.printStackTrace();
            }
        }
        return null;
    }
}