您需要使用 POST-Redirect-GET 模式.

You need to use the the POST-Redirect-GET pattern.

通过重定向到 GET 请求使您的表单响应.
这样，当用户刷新页面时，只会重新发送GET.

Make your form respond with a redirect to a GET request.
This way, when the user refreshes the page, it will only resend the GET.