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  • Java:获取IP地址

    文章来源:https://www.cnblogs.com/hello-tl/p/9139323.html

    import java.net.InetAddress;
    import java.net.UnknownHostException;
    
    import javax.servlet.http.HttpServletRequest;
    
    public class IP {
      /** 
         * 获取当前网络ip 
         * @param request 
         * @return 
         */  
        public static String getIpAddr(HttpServletRequest request){  
            String 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") || ipAddress.equals("0:0:0:0:0:0:0:1")){
                    //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(","));
                }
            }
            return ipAddress;
        }
    }
    

    文章来源:https://www.cnblogs.com/hello-tl/p/9139323.html

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  • 原文地址:https://www.cnblogs.com/hello-tl/p/9139323.html
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