code: public static void setExpiresHeader(final HttpServletResponse response, final long expiresSeconds) {
  		// Http 1.0 header, set a fix expires date.
  		response.setDateHeader(HttpHeaders.EXPIRES, System.currentTimeMillis() + expiresSeconds * 1000);
  		// Http 1.1 header, set a time after now.
  		response.setHeader(HttpHeaders.CACHE_CONTROL, "private, max-age=" + expiresSeconds);
  	}
docs: 设置客户端缓存过期时间的 Header。
  
  @param response
  响应
  @param expiresSeconds
  过期时间