Tomcat：缓存控制

与上面的帖子类似，但是该代码存在一些问题。这将禁用所有浏览器缓存：

import javax.servlet.*;import javax.servlet.http.HttpServletResponse;import java.io.IOException;import java.util.Date;public class CacheControlFilter implements Filter {    public void doFilter(ServletRequest request, ServletResponse response,   FilterChain chain) throws IOException, ServletException {        HttpServletResponse resp = (HttpServletResponse) response;        resp.setHeader("Expires", "Tue, 03 Jul 2001 06:00:00 GMT");        resp.setDateHeader("Last-Modified", new Date().getTime());        resp.setHeader("Cache-Control", "no-store, no-cache, must-revalidate, max-age=0, post-check=0, pre-check=0");        resp.setHeader("Pragma", "no-cache");        chain.doFilter(request, response);    }}

然后按照StuThompson的answer中的描述映射到web.xml中。