Java中使用HttpRequest获取用户真实IP地址端口

import javax.servlet.http.HttpServletRequest; /** * 自定义访问对象工具类 * * 获取对象的IP地址等信息 * @author rainyday * */ public class CusAccessObjectUtil { /** * 获取用户真实IP地址，不使用request.getRemoteAddr();的原因是有可能用户使用了代理软件方式避免真实IP地址, * * 可是，如果通过了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP值，究竟哪个才是真正的用户端的真实IP呢？ * 答案是取X-Forwarded-For中第一个非unknown的有效IP字符串。 * * 如：X-Forwarded-For：192.168.1.110, 192.168.1.120, 192.168.1.130, * 192.168.1.100 * * 用户真实IP为： 192.168.1.110 * * @param request * @return */ public static String getIpAddress(HttpServletRequest request) { String ip = request.getHeader("x-forwarded-for"); if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("Proxy-Client-IP"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("WL-Proxy-Client-IP"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("HTTP_CLIENT_IP"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getHeader("HTTP_X_FORWARDED_FOR"); } if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) { ip = request.getRemoteAddr(); } return ip; } }

/**

 *获取端口

 */

public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { String uri = request.getRequestURI();//返回请求行中的资源名称 String url = request.getRequestURL().toString();//获得客户端发送请求的完整url String ip = request.getRemoteAddr();//返回发出请求的IP地址 String params = request.getQueryString();//返回请求行中的参数部分 String host=request.getRemoteHost();//返回发出请求的客户机的主机名 int port =request.getRemotePort();//返回发出请求的客户机的端口号。 System.out.println(ip); System.out.println(url); System.out.println(uri); System.out.println(params); System.out.println(host); System.out.println(port); }