请教高手HTTPURLConnection的问题

找到方法了/* 取得cookie.*/ 
... 
HttpURLConnection huc= (HttpURLConnection) url.openConnection(); 
... 
InputStream is = huc.getInputStream(); 
// 从响应中检索会话ID. 
String cookieVal = hc.getHeaderField("Set-Cookie"); 
String sessionId; 
if(cookieVal != null) 
{ 
sessionId = cookieVal.substring(0, cookieVal.indexOf(";")); 
} 
... 
/* 发送cookie. */ 
HttpURLConnection huc= (HttpURLConnection) url.openConnection(); 
if(sessionId != null) 
{ 
huc.setRequestProperty("Cookie", sessionId); 
} 
InputStream is = huc.getInputStream();