Java 获取客户端IP-Toy模板网

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方法一

 public static String getIp2(HttpServletRequest request) {
        String ip = request.getHeader("X-Forwarded-For");
        if(StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)){
            //多次反向代理后会有多个ip值，第一个ip才是真实ip
            int index = ip.indexOf(",");
            if(index != -1){
                return ip.substring(0,index);
            }else{
                return ip;
            }
        }
        ip = request.getHeader("X-Real-IP");
        if(StringUtils.isNotEmpty(ip) && !"unKnown".equalsIgnoreCase(ip)){
            return ip;
        }
        return request.getRemoteAddr();
    }

方法二

public static String getClinetIP(HttpServletRequest request){
        String ip = null;
        if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)){
            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("entrust-client-ip");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)){
            ip = request.getRemoteAddr();
            if ("127.0.0.1".equals(ip) || "0:0:0:0:0:0:0:1".equals(ip.trim())){
                InetAddress inetAddress = null;
                try{
                    inetAddress =InetAddress.getLocalHost();
                }catch (UnknownHostException e){
                    System.out.println("获取IP地址失败");
                }
                ip = inetAddress.getHostAddress();
            }
        }
        //多级 方向代理
        if (ip.indexOf(",")>0){
            ip = ip.substring(0,ip.indexOf(",")).trim();
        }
        
        return ip;
    }

ps：代码引用于
JAVA获取客户端IP地址-CSDN博客https://blog.csdn.net/m0_71867302/article/details/129683061?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522170738691916800226562378%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=170738691916800226562378&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduend~default-2-129683061-null-null.142^v99^pc_search_result_base6&utm_term=java%E8%8E%B7%E5%8F%96%E5%AE%A2%E6%88%B7%E7%AB%AFip%E5%9C%B0%E5%9D%80&spm=1018.2226.3001.4187

问题：当项目中用到Nginx转发的时候，获取ip的时候会获取异常、

在Nginx中加入以下配置：

proxy_set_header X-Real-IP $remote_addr;

proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;文章来源地址https://www.toymoban.com/news/detail-834578.html

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