Java获取IP地址，IpUtils工具类，Java IP地址获取

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©copyright 蕃薯耀 2020-01-17

 

import java.net.inet4address;
import java.net.inetaddress;
import java.net.networkinterface;
import java.util.enumeration;

import javax.servlet.http.httpservletrequest;

public class iputils {

    private static final string[] headers = { 
        "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"
    };
    
    /**
     * 判断ip是否为空，空返回true
     * @param ip
     * @return
     */
    public static boolean isemptyip(final string ip){
        return (ip == null || ip.length() == 0 || ip.trim().equals("") || "unknown".equalsignorecase(ip));
    }
    
    
    /**
     * 判断ip是否不为空，不为空返回true
     * @param ip
     * @return
     */
    public static boolean isnotemptyip(final string ip){
        return !isemptyip(ip);
    }
    
    /***
     * 获取客户端ip地址(可以穿透代理)
     * @param request httpservletrequest
     * @return
     */
    public static string getipaddress(httpservletrequest request) {
        string ip = "";
        for (string header : headers) {
            ip = request.getheader(header);
            if(isnotemptyip(ip)) {
                 break;
            }
        }
        if(isemptyip(ip)){
            ip = request.getremoteaddr();
        }
        if(isnotemptyip(ip) && ip.contains(",")){
            ip = ip.split(",")[0];
        }
        if("0:0:0:0:0:0:0:1".equals(ip)){
            ip = "127.0.0.1";
        }
        return ip;
    }
    
    
    /**
     * 获取本机的局域网ip地址，兼容linux
     * @return string
     * @throws exception
     */
    public string getlocalhostip() throws exception{
        enumeration<networkinterface> allnetinterfaces = networkinterface.getnetworkinterfaces();
        string localhostaddress = "";
        while(allnetinterfaces.hasmoreelements()){
            networkinterface networkinterface = allnetinterfaces.nextelement();
            enumeration<inetaddress> address = networkinterface.getinetaddresses();
            while(address.hasmoreelements()){
                inetaddress inetaddress = address.nextelement();
                if(inetaddress != null && inetaddress instanceof inet4address){
                    localhostaddress = inetaddress.gethostaddress();
                }
            }
        }
        return localhostaddress;
    }
    
    
}

 

 

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©copyright 蕃薯耀 2020-01-17