问题：
I have a Grails application running locally using its own tomcat and I have just changed the favicon for a new one. 我有一个Grails应用程序，它使用自己的tomcat在本地运行，而我刚刚将图标图标更改为一个新图标。 Problem is that I can not see it in any browser. 问题是我无法在任何浏览器中看到它。 The old favicon shows up or I get no favicon at all, but not my new one. 出现旧的收藏夹图标，或者我什么都没有得到，但是我的新收藏夹没有。 I do not think this is a Grails issue per se, more an issue with favicons. 我认为这本身不是Grails的问题，更多的是网站图标的问题。
What is supposed to happen with favicons? 网站图标应该发生什么？ How are they supposed to work? 他们应该如何工作？ I have numerous bookmarks in my browser which have the wrong icons and they never seem to get refreshed. 我的浏览器中有很多书签，这些书签的图标错误，它们似乎从未刷新过。 How do I force the server/browser to stop caching them? 如何强制服务器/浏览器停止缓存它们？ It seems pretty silly to always cache them given they are normally only 16x16. 鉴于通常只有16x16，总是缓存它们似乎很愚蠢。 Why not just upload them with every visit to the page? 为什么不随页面访问一起上传它们呢？ It is not exactly a huge overhead. 这并不是一个巨大的开销。
解决方案：
参考一： https://stackoom.com/question/9Gdx/如何强制网站图标刷新参考二： https://oldbug.net/q/9Gdx/How-do-I-force-a-favicon-refresh
来源：oschina
链接：https://my.oschina.net/u/4428122/blog/4479316