设置cache

response.setHeader("Cache-Control", "no-cache");
response.setHeader("Pragma", "no-cache");
response.setHeader("Expires", "0");

 

    response.addHeader("Cache-Control", "max-age=480");
    response.addHeader("Cache-Control", "public");
    long currentTimeMillis = System.currentTimeMillis();
    response.setDateHeader("Expires", currentTimeMillis + 480000);

 protected void setCache(HttpServletResponse response, int minutes)
    {
        response.addHeader("Cache-Control", "max-age=" + (minutes * 60));
        response.addHeader("Cache-Control", "public");
        long currentTimeMillis = System.currentTimeMillis();
        response.setDateHeader("Expires", currentTimeMillis + (minutes * 60 * 1000));
    }