java 查看 HTTP 頭資訊

Java 其實很強大。可以擷取HTTP頭的詳細資料，做出更為細緻的處理，如獲得檔案最後修改時間等。

代碼：

void doPost(HttpServletRequest req, HttpServletResponse resp)            throws ServletException, IOException {    Enumeration enum1 = req.getHeaderNames();        log.debug("-----------header----------------->");    while(enum1.hasMoreElements()){        String key = (String)enum1.nextElement();        String value = req.getHeader(key);        log.debug(key + ":" + value);    }    log.debug("<-----------header-----------------");        }

結果：

-----------header----------------->Accept:*/*Referer:http://localhost:9080/UtanWeb/imgsys/main/regTempMgr.htmlAccept-Language:zh-cnAccept-Encoding:gzip, deflateIf-Modified-Since:Thu, 15 Sep 2011 12:13:41 GMTUser-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 1.1.4322; .NET CLR 2.0.50727)Host:localhost:9080Connection:Keep-Alive<-----------header-----------------