如何在不添加缓存头的情况下缓存服务器响应中发送的图像？

Question

I'm a complete noob to caching and to top it off, for reasons beyond my control, I cannot add/modify my response header sent from my servlet (ridiculous I know). Is there any other way I can tell the user's browser to cache the images similar to a typical Last-Modified or Expires header? I've heard of ways of doing it in jquery but all I've seen is jquery image pre-loading which isn't the same thing.

Answer 1

更改了我从新的servlet进行调用的请求，以便可以修改/添加标头，从而绕过了我遇到的问题。