[jsp] 브라우저 캐쉬 설정

	/** cache 비활성화 */
	String httpVersion=request.getProtocol();
	if(httpVersion.equals("HTTP/1.0")) {
		response.setDateHeader("Expires",-1);
		response.setHeader("Pragma","no-cache");
	}else if(httpVersion.equals("HTTP/1.1")) {
		response.setHeader("Cache-Control","no-cache");
	}