java獲取IP地址的方法

//根據網卡取本機配置的IP
String ip = "";
try {
    ip = InetAddress.getLocalHost().getHostAddress();
} catch (UnknownHostException e) {
    e.printStackTrace();
}

 

// 客戶端發的請求, 從原來的請求中獲取ip
HttpServletRequest request = getRequest();
String ip = null;
if (request != null) {
    ip = request.getHeader(Constant.IP);
}