java设置浏览器缓存_JAVA WEB过滤器设置浏览器缓存

最近在工作中对一个开源框架进行二次开发，发现在浏览器运行哪些静态资源浏览器是不缓存的，找了好久都没有找到设置的地方，只好自食其力，用Java的过滤器设置过期时间，详情且看代码

public class ResponseFilter implements Filter {

@Override

public void init(FilterConfig filterConfig) throws ServletException {

}

@Override

public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {

HttpServletResponse res = (HttpServletResponse) response;

Date date = new Date();

//设置缓存周期为一个小时

Long cacheCycle = (long) (60 * 60 * 1000);

Long time = date.getTime() + cacheCycle;

//Last-Modified:页面的最后生成时间

res.setDateHeader("Last-Modified", date.getTime());

//Expires:过时期限值

res.setDateHeader("Expires", time);

//Cache-Control来控制页面的缓存与否,public:浏览器和缓存server都能够缓存页面信息

res.setHeader("Cache-Control", "public");

//Pragma:设置页面是否缓存，为Pragma则缓存，no-cache则不缓存

res.setHeader("Pragma", "Pragma");

chain.doFilter(request, res);

}

@Override

public void destroy() {

}

}

web.xml配置，可自行配置

ResponseFilter

art.zzc.filter.ResponseFilter

ResponseFilter

/*