html5 - 想要写一个H5页面，就微信打开来那种，然后几个输入框，把数据保存在我后台（java）的数据库里，实现思路是怎样的？

Answer 1

How do you save it locally?

Writing a page is also done by submitting it to the address of your server and then processing it in the background

Answer 2

The back-end Java encapsulates the interface, and the front-end directly uses js to save the data, and then submits it using ajax.
As for getting or posting, it depends on your mood. It is easier to understand when writing get for the first time