java 获取真实ip和根据ip获取ip所在地区

附上代码：

 import com.alibaba.fastjson.JSON;
 import javax.servlet.http.HttpServletRequest;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.net.*;

public class AddrGetTest{

/**
 * 获取真实ip地址
 *
 * @param request
 * @return
 */
public static String getIp(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 (StringUtils.isBlank(ipAddress) || "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;
}
/**
 * 手机版获取所有二级科目
 *
 * @des 根据三级科目和说明获取所有二级科目
 * @version v1
 */
@GetMapping("v1/ips")
public Result listSecond(HttpServletRequest request) throws ActException {
    String addr = "";
    String ip = getIp(request);
    try {
        String str = getJsonContent("http://ip.taobao.com/service/getIpInfo.php?ip="+ip );
        System.out.println(str);
        String ss = JSON.toJSONString(str);
        AddressResult result = JSON.parseObject(str, AddressResult.class);
  //            System.out.println(ss);
  //            System.out.println(JSON.toJSONString(result));
        if ("0".equals(result.getCode())) {
            Address ad = JSON.parseObject(result.getData(), Address.class);
            addr = ad.getCountry() + "/" + ad.getArea() + "/" + ad.getRegion() + "/" + ad.getCity() + " " + ad.getIsp();
        } else {
            addr = "IP地址有误";
        }
    } catch (Exception e) {
        e.printStackTrace();
        throw new ActException( "获取IP地址异常：" + e.getMessage());
    }


    return ActResult.initialize(addr);

}



public static String getJsonContent(String urlStr) {
    try {// 获取HttpURLConnection连接对象
        URL url = new URL(urlStr);
        HttpURLConnection httpConn = (HttpURLConnection) url.openConnection();
        // 设置连接属性
        httpConn.setConnectTimeout(3000);
        httpConn.setDoInput(true);
        httpConn.setRequestMethod("GET");
        // 获取相应码
        int respCode = httpConn.getResponseCode();
        if (respCode == 200) {
            return ConvertStream2Json(httpConn.getInputStream());
        }
    } catch (MalformedURLException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }
    return "";
}

private static String ConvertStream2Json(InputStream inputStream) {
    String jsonStr = "";
    // ByteArrayOutputStream相当于内存输出流
    ByteArrayOutputStream out = new ByteArrayOutputStream();
    byte[] buffer = new byte[1024];
    int len = 0;
    // 将输入流转移到内存输出流中
    try {
        while ((len = inputStream.read(buffer, 0, buffer.length)) != -1) {
            out.write(buffer, 0, len);
        }
        // 将内存流转换为字符串
        jsonStr = new String(out.toByteArray());
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    return jsonStr;
}
    }


public class Address {
     private String country;
     private String area;
     private String region;
     private String city;
     private String isp;
     private Address(){

}

public String getCountry() {
    return country;
}

public void setCountry(String country) {
    this.country = country;
}

public String getRegion() {
    return region;
}

public void setRegion(String region) {
    this.region = region;
}

public String getCity() {
    return city;
}

public void setCity(String city) {
    this.city = city;
}

public String getIsp() {
    return isp;
}

public void setIsp(String isp) {
    this.isp = isp;
}

public String getArea() {
    return area;
}

public void setArea(String area) {
    this.area = area;
}
  }


public class AddressResult {
  private String code;
  private String data;

  public String getCode() {
    return code;
 }

public void setCode(String code) {
    this.code = code;
}

public String getData() {
    return data;
}

public void setData(String data) {
    this.data = data;
}
  }

springboot 容器化环境获取真实IP地址
首先，后端项目springboot，前端项目VUE，两个都是运行在docker容器里，通过k8s进行编排的。
获取真实的客户端IP地址
一 需要在前端VUE的宿主nginx中，添加请求头规则
location /api {
proxy_set_header Host $http_host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header REMOTE-HOST $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_pass http://localhost:8080/;
}

二 分享springboot下面获取IP地址方法

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.util.StringUtils;

import javax.servlet.http.HttpServletRequest;
import java.net.InetAddress;
import java.net.UnknownHostException;

/**

• Ip地址

*/
public class IpUtils {
private static Logger logger = LoggerFactory.getLogger(IpUtils.class);
private static final String IP_UTILS_FLAG = ",";
private static final String UNKNOWN = "unknown";
private static final String LOCALHOST_IP = "0:0:0:0:0:0:0:1";
private static final String LOCALHOST_IP1 = "127.0.0.1";

/**

• 获取IP公网地址
• 使用Nginx等反向代理软件， 则不能通过request.getRemoteAddr()获取IP地址
• 如果使用了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP地址，X-Forwarded-For中第一个非unknown的有效IP字符串，则为真实IP地址
  */
  public static String getIpAddr(HttpServletRequest request) {
  String ip = null;
  try {
  //以下两个获取在k8s中，将真实的客户端IP，放到了x-Original-Forwarded-For。而将WAF的回源地址放到了 x-Forwarded-For了。
  ip = request.getHeader("X-Original-Forwarded-For");
  if (StringUtils.isEmpty(ip) || UNKNOWN.equalsIgnoreCase(ip)) {
  ip = request.getHeader("X-Forwarded-For");
  }
  //获取nginx等代理的ip
  if (StringUtils.isEmpty(ip) || UNKNOWN.equalsIgnoreCase(ip)) {
  ip = request.getHeader("x-forwarded-for");
  }
  if (StringUtils.isEmpty(ip) || UNKNOWN.equalsIgnoreCase(ip)) {
  ip = request.getHeader("Proxy-Client-IP");
  }
  if (StringUtils.isEmpty(ip) || ip.length() == 0 || UNKNOWN.equalsIgnoreCase(ip)) {
  ip = request.getHeader("WL-Proxy-Client-IP");
  }
  if (StringUtils.isEmpty(ip) || UNKNOWN.equalsIgnoreCase(ip)) {
  ip = request.getHeader("HTTP_CLIENT_IP");
  }
  if (StringUtils.isEmpty(ip) || UNKNOWN.equalsIgnoreCase(ip)) {
  ip = request.getHeader("HTTP_X_FORWARDED_FOR");
  }
  //兼容k8s集群获取ip
  if (StringUtils.isEmpty(ip) || UNKNOWN.equalsIgnoreCase(ip)) {
  ip = request.getRemoteAddr();
  if (LOCALHOST_IP1.equalsIgnoreCase(ip) || LOCALHOST_IP.equalsIgnoreCase(ip)) {
  //根据网卡取本机配置的IP
  InetAddress iNet = null;
  try {
  iNet = InetAddress.getLocalHost();
  } catch (UnknownHostException e) {
  logger.error("getClientIp error: {}", e);
  }
  ip = iNet.getHostAddress();
  }
  }
  } catch (Exception e) {
  logger.error("IPUtils ERROR ", e);
  }
  //使用代理，则获取第一个IP地址
  if (!StringUtils.isEmpty(ip) && ip.indexOf(IP_UTILS_FLAG) > 0) {
  ip = ip.substring(0, ip.indexOf(IP_UTILS_FLAG));
  }

return ip;

}

}

上面方法在k8s容器中，也是通用的。