Java获取访问者真实的IP地址

个人收录的一些小工具类,供大家参考

方式一

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*/
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;
}
}

方式二

 /*** 获取客户端ip地址(可以穿透代理)* * @param request* @return*/public static String getRemoteAddr(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;}

方式三

privatestatic final String[] HEADERS_TO_TRY = { "X-Forwarded-For","Proxy-Client-IP","WL-Proxy-Client-IP","HTTP_X_FORWARDED_FOR","HTTP_X_FORWARDED","HTTP_X_CLUSTER_CLIENT_IP","HTTP_CLIENT_IP","HTTP_FORWARDED_FOR","HTTP_FORWARDED","HTTP_VIA","REMOTE_ADDR","X-Real-IP"};/**** 获取客户端ip地址(可以穿透代理)* @param request* @return*/public static String getClientIpAddress(HttpServletRequest request) {for (String header : HEADERS_TO_TRY) {String ip = request.getHeader(header);if (ip != null && ip.length() != 0 && !"unknown".equalsIgnoreCase(ip)) {return ip;}}return request.getRemoteAddr();}

方式四

/**** 获取客户端ip地址(可以穿透代理)* @param request* @return*/public static String getClientIpAddr(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_X_FORWARDED_FOR");  }  if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  ip = request.getHeader("HTTP_X_FORWARDED");  }  if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  ip = request.getHeader("HTTP_X_CLUSTER_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_FORWARDED_FOR");  }  if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  ip = request.getHeader("HTTP_FORWARDED");  }  if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  ip = request.getHeader("HTTP_VIA");  }  if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  ip = request.getHeader("REMOTE_ADDR");  }  if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  ip = request.getRemoteAddr();  }  return ip;  }

方式五

publicstatic String getIpAddr(HttpServletRequest request) {String ip = request.getHeader("X-Real-IP");if (null != ip && !"".equals(ip.trim())&& !"unknown".equalsIgnoreCase(ip)) {return ip;}ip = request.getHeader("X-Forwarded-For");if (null != ip && !"".equals(ip.trim())&& !"unknown".equalsIgnoreCase(ip)) {// get first ip from proxy ipint index = ip.indexOf(',');if (index != -1) {return ip.substring(0, index);} else {return ip;}}return request.getRemoteAddr();
}

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