獲取訪問IP地址

package com.liujx.iptest.util;

import javax.servlet.http.HttpServletRequest;

public class IpUtil {

    /**
     * X-Real-IP：nginx服務代理
     * X-Forwarded-For：Squid 服務代理
     * Proxy-Client-IP：apache 服務代理
     * WL-Proxy-Client-IP：weblogic 服務代理
     */
    private final static String[] HEADER_TRY = {"x-real-ip","x-forwarded-for","proxy-client-ip","wl-proxy-client-ip"};

    public static String getIp(HttpServletRequest request) {
        for (String header : HEADER_TRY) {
            String ip = request.getHeader(header);
            if (ip!=null && ip.length() !=0 && !"unknown".equalsIgnoreCase(ip)) {
                return ip;
            }
        }
        // 還是不能獲取到，最後再通過request.getRemoteAddr()獲取
        return request.getRemoteAddr();
    }
}

package com.liujx.iptest.common;

import com.liujx.iptest.util.IpUtil;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.GenericFilterBean;

import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
public class IpFIlter extends GenericFilterBean {

    private static String ip;

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        HttpServletResponse response = (HttpServletResponse) servletResponse;
        String userIp = IpUtil.getIp(request);

        this.ip = userIp;
        filterChain.doFilter(servletRequest, servletResponse);
    }

    public String getIp() {
        return ip;
    }

    public void setIp(String ip) {
        this.ip = ip;
    }
}