String?result="";//訪問返回結果
BufferedReader?read=null;//讀取訪問結果
try?{
//創建url
URL?realurl=new?URL(url+"?"+param);
//打開連接
URLConnection?connection=realurl.openConnection();
//?設置通用的請求屬性 connection.setRequestProperty("accept",?"*/*"); connection.setRequestProperty("connection",?"Keep-Alive"); connection.setRequestProperty("user-agent", "Mozilla/4.0?(compatible;?MSIE?6.0;?Windows?NT?5.1;SV1)"); //建立連接 connection.connect(); //?獲取所有響應頭字段 Map<String,?List<String>>?map?=?connection.getHeaderFields(); //?遍歷所有的響應頭字段，獲取到cookies等 for?(String?key?:?map.keySet())?{ System.out.println(key?+?"--->"?+?map.get(key)); } //?定義?BufferedReader輸入流來讀取URL的響應 read?=?new?BufferedReader(new?InputStreamReader( connection.getInputStream(),"UTF-8")); String?line;//循環讀取 while?((line?=?read.readLine())?!=?null)?{ result?+=?line; }}?catch?(IOException?e)?{
e.printStackTrace();
}finally{
if(read!=null){//關閉流
try?{ read.close(); }?catch?(IOException?e)?{ e.printStackTrace(); }}
}
return?result;?
}