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  • java 获取客户端的ip地址

    import javax.servlet.http.HttpServletRequest;
    import java.net.InetAddress;
    import java.net.UnknownHostException;
     
    /**
     * 获取访问接口的客户端的ip地址
     * @author remainsu
     * @version 1.0 2019-05-11
     * 
     * 使用说明:
     *   1. Controller中加入HttpServletRequest参数(HttpServletRequest request)
     *   2. 获取ip地址:String ipAddress = IpUtil.getIpAddr(request);
     */
    public class IpUtil {
        public static String getIpAddr(HttpServletRequest request) {
            String ipAddress = null;
            try {
                ipAddress = request.getHeader("x-forwarded-for");
                if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
                    ipAddress = request.getHeader("Proxy-Client-IP");
                }
                if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
                    ipAddress = request.getHeader("WL-Proxy-Client-IP");
                }
                if (ipAddress == null || ipAddress.length() == 0 || "unknown".equalsIgnoreCase(ipAddress)) {
                    ipAddress = request.getRemoteAddr();
                    if (ipAddress.equals("127.0.0.1")) {
                        // 根据网卡取本机配置的IP
                        InetAddress inet = null;
                        try {
                            inet = InetAddress.getLocalHost();
                        } catch (UnknownHostException e) {
                            e.printStackTrace();
                        }
                        ipAddress = inet.getHostAddress();
                    }
                }
                // 对于通过多个代理的情况,第一个IP为客户端真实IP,多个IP按照','分割
                if (ipAddress != null && ipAddress.length() > 15) { // "***.***.***.***".length()
                    // = 15
                    if (ipAddress.indexOf(",") > 0) {
                        ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
                    }
                }
            } catch (Exception e) {
                ipAddress="";
            }
            // ipAddress = this.getRequest().getRemoteAddr();
     
            return "0:0:0:0:0:0:0:1".equals(ipAddress) ? "127.0.0.1" : ipAddress;
        }
    }
    
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  • 原文地址:https://www.cnblogs.com/remainsu/p/java-huo-qu-ke-hu-duan-deip-de-zhi.html
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