java - 微信刷新 jsapi_ticket 问题

Question

背景：微信的 jsapi_ticket，有7200秒的有效期，官方文档说要第三方自定义中控服务器，在一定的时间去刷新 jsapi_ticket。
问题描述：定义了一个 Timer 定时器，提前 200 秒去获取 jsapi_ticket。但是每次刷新后获取到的jsapi_ticket都是同一个值，不会改变。
测试如下：

测试时调用了两个方法：获取 access_token 和 获取 jsapi_ticket，两次获取的 access_token 不一样，但是 jsapi_ticket 却是一样。

Answer 1

You don’t care whether it’s the same or not, as long as it works

How good is it that you made it a passive trigger? Check the expiration time every time you use it. If it expires, refresh it. This is how it is used in the official php example

Answer 2

The answer above is from PHP. You can learn from it. For the front-end which is a static resource, you can only let the front-end check it. If it is found to be expired, send a request to update the ticket to the server and let the server update it. Active brushing feels unreliable, 7200s, the card is not that accurate