如何在jsf中启用浏览器缓存

问题描述

我已经使用JSF 2.0创建了一个Web应用程序.我收到朋友的反馈，说我应该进行浏览器缓存"，因为我有很多图像.

I have created a web application using JSF 2.0. I got feedback from my friend saying I should do "Browser Caching" as I have many images.

但是我不知道如何在JSF中执行相同的操作.任何想法/提示将不胜感激.

However I don't know how to do same in JSF. Any idea/ hint would be appreciated.

关于要做的事情的概念也将起作用.

Concept on what to be done would also work.

推荐答案

只需使用<h:graphicImage name="...">而不是<img src="...">.这样，默认的JSF资源处理程序将默认指示浏览器将其缓存1周，这可以使用依赖于实现的上下文参数进行配置，对于Mojarra，该参数如下:

Just use <h:graphicImage name="..."> instead of <img src="...">. This way the default JSF resource handler will instruct the browser to cache them for 1 week by default, which is configureable with an implementation dependent context parameter, which is the following in case of Mojarra:

<context-param>
    <param-name>com.sun.faces.defaultResourceMaxAge</param-name>
    <param-value>3628800000</param-value> <!-- 6 weeks -->
</context-param>

请注意，使用<h:outputScript>和<h:outputStylesheet>代替<script>和<link rel="stylesheet">时也是如此.

Note, the same applies when using <h:outputScript> and <h:outputStylesheet> instead of <script> and <link rel="stylesheet">.

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