介紹

客戶端所有的請求信息都可以通過HttpServletRequest獲得，獲取客戶端ip可以通過getRemoteAddr()獲取。

但是如果客戶端是通過代理訪問我們的服務(wù)器，那么getRemoteAddr()獲取到的ip就很有可能不是真實的ip，這時候我們可以通過請求頭里的x-forwarded-for來獲取真實的ip，請求每經(jīng)一次代理，都會在后面拼接該代理的ip，以逗號分隔。文章來源地址http://www.zghlxwxcb.cn/news/detail-569814.html

方法一：此方法獲取真實IP（本機(jī)IP并不是127.0.0.1）

獲取發(fā)送請求的電腦的IP地址，并返回

package com.lc.z.common.utils;

import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.context.request.RequestContextHolder;

import javax.servlet.http.HttpServletRequest;

public class IpUtil {

    /**
     * 獲取請求的ip
     */
    public static String getRequestIp() {

        RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();

        // 從獲取RequestAttributes中獲取HttpServletRequest的信息
        HttpServletRequest request = (HttpServletRequest) requestAttributes.resolveReference(RequestAttributes.REFERENCE_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;
    }
}

方法二：

RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();
HttpServletRequest request = ((ServletRequestAttributes) requestAttributes).getRequest();
String clientIP = ServletUtil.getClientIP(request);
// 本地的服務(wù)輸出 IP:127.0.0.1
System.out.println("IP:"+ clientIP);

到了這里，關(guān)于使用Java獲取發(fā)送請求的電腦的IP地址的文章就介紹完了。如果您還想了解更多內(nèi)容，請在右上角搜索TOY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章，希望大家以后多多支持TOY模板網(wǎng)！