web获取用户真实ip

获取客户端真实IP

获取本地IP

获取本地host

判断某一IP端口能否连通

package com.app.utils;import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.NetworkInterface;
import java.net.Socket;
import java.net.SocketException;
import java.net.UnknownHostException;
import java.util.Enumeration;
import javax.servlet.http.HttpServletRequest;/*** web常用工具类*/
public class WebToolUtils
{/*** 获取本地IP地址*/public static String getLocalIP(){if (isWindowsOS()){try{return InetAddress.getLocalHost().getHostAddress();}catch (UnknownHostException e){System.out.println("获取IP地址异常！");e.printStackTrace();return null;}}else{return getLinuxLocalIp();}}/*** 判断操作系统是否是Windows*/public static boolean isWindowsOS(){boolean isWindowsOS = false;String osName = System.getProperty("os.name");if (osName.toLowerCase().indexOf("windows") > -1){isWindowsOS = true;}return isWindowsOS;}/*** 获取本地Host名称*/public static String getLocalHostName(){try{return InetAddress.getLocalHost().getHostName();}catch (UnknownHostException e){e.printStackTrace();return null;}}/*** 获取Linux下的IP地址* @return IP地址* @throws SocketException*/private static String getLinuxLocalIp(){String ip = "";try{for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en.hasMoreElements();){NetworkInterface intf = en.nextElement();String name = intf.getName();if (!name.contains("docker") && !name.contains("lo")){for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();){InetAddress inetAddress = enumIpAddr.nextElement();if (!inetAddress.isLoopbackAddress()){String ipaddress = inetAddress.getHostAddress().toString();if (!ipaddress.contains("::") && !ipaddress.contains("0:0:") && !ipaddress.contains("fe80")){ip = ipaddress;}}}}}}catch (SocketException ex){System.out.println("获取IP地址异常！");ip = null;ex.printStackTrace();}return ip;}/*** 获取用户真实IP地址*/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;}/*** 判断IP端口是否能够访问到*/public static boolean isHostConnectable(String host, int port){Socket socket = new Socket();try{socket.connect(new InetSocketAddress(host, port));}catch (IOException e){e.printStackTrace();return false;}finally{try{socket.close();}catch (IOException e){e.printStackTrace();}}return true;}
}