java 实现 post 方式登陆

Question

URL url = new URL("https://xxx.xxx.xxx/cgi-bin/login");
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
String agent = "Mozilla/4.0";
String rawData = "comname=hongjiang&username=&pass=781105&ntokenotp=";
String type = "application/x-www-form-urlencoded";
conn.setDoInput(true);
conn.setDoOutput(true);
conn.setRequestMethod("POST");
conn.setRequestProperty( "User-Agent", agent );
conn.setRequestProperty( "Content-Type", type );
conn.setRequestProperty( "Content-Length",Integer.toString(rawData.getBytes("gb2312").length));还是下面的大哥们写吧