SpringBoot注册格式化器

Config类里面写

/**
 * 注册格式化器
 * 访问路径：http://localhost:端口号/testDate?date=2026-02-01
 * @param registry
 */
@Override
public void addFormatters(FormatterRegistry registry) {
    registry.addFormatter(new Formatter<Date>() {
        @Override
        public String print(Date date, Locale locale) {
            return new SimpleDateFormat("yyyy-MM-dd").format(date);
        }
        @Override
        public Date parse(String s, Locale locale) throws ParseException {
            // 接收请求参数
            return new SimpleDateFormat("yyyy-MM-dd").parse(s);
        }
    });
}

创建FormatterController

@Controller
public class FormatterController {
    @RequestMapping("/testDate")
    public String test(Date date, Model model) {
        model.addAttribute("date", date);
        return "success";
    }
}

创建success.html

<!DOCTYPE html>
<html>
<body>
<p>接收到的日期是：</p>
<p th:text="${date}"></p>
</body>
</html>

启动启动类，访问

http://localhost:端口号/testDate?date=2026-02-01