获取请求地址，根据请求地址获取地域信息

import cn.hutool.core.text.UnicodeUtil;
import cn.hutool.http.HttpUtil;
import cn.hutool.json.JSON;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;

import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.io.UnsupportedEncodingException;
import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.HashMap;
import java.util.Optional;

/**

• 获取客户端IP

• @author zlb
  */
  @Component
  @Slf4j
  public class IPAddressUtil {

  private static final String LOCAL_IP = “127.0.0.1”;

  private static final String LOCAL_IPS = " 0:0:0:0:0:0:0:1";

  private static final String REQ_URL = “http://ip.taobao.com/service/getIpInfo.php”;
  /**

  • 最大重试次数
    */
    private static final int MAX_REQEST = 3;
    private static final String COLON;
    private static final String SLASH;
    private static final String COMMA;
    private static final String STR_NONE;

  static {
  COLON = “:”;
  SLASH = “”";
  COMMA = “,”;
  STR_NONE = “”;
  }

  /**

  • 获取IP地址

  • @param request

  • @return
    */
    public String getIpAddress(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 (ipAddress == null || ipAddress.length() == 0 || “unknown”.equalsIgnoreCase(ipAddress)) {
    ipAddress = request.getRemoteAddr();
    if (LOCAL_IP.equals(ipAddress) || LOCAL_IPS.equals(ipAddress)) {
    // 根据网卡取本机配置的IP
    InetAddress inet = null;
    try {
    inet = InetAddress.getLocalHost();
    } catch (UnknownHostException e) {
    e.printStackTrace();
    }
    assert inet != null;
    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()
    if (ipAddress.indexOf(COMMA) > 0) {
    ipAddress = ipAddress.substring(0, ipAddress.indexOf(COMMA));
    }
    }
    return ipAddress;
    }

  /**

  • @param content 请求的参数 格式为：name=xxx&pwd=xxx
  • @param encodingString 服务器端请求编码。如GBK,UTF-8等
  • @return
  • @throws UnsupportedEncodingException
    */
    private String getAddresses(String content) {
    // 这里调用pconline的接口
    //http://ip.taobao.com/service/getIpInfo.php
    // 从http://whois.pconline.com.cn取得IP所在的省市区信息
    HashMap paramMap = new HashMap<>();
    paramMap.put(“ip”, content);
    String returnStr = “”;
    int count = 0;
    // 失败重连
    while (true) {
    try {
    returnStr = HttpUtil.get(REQ_URL, paramMap);
    break;
    } catch (Exception e) {
    count++;
    if (count >= MAX_REQEST) {
    throw new Exception(“500”, “The request link failed. The number of failed attempts is {}” + count);
    }
    }
    }
    if (returnStr != null) {
    // 处理返回的省市区信息
    log.info(“省市区信息：{}”, returnStr);
    IpInfo ipInfo = JSONUtil.toBean(returnStr, IpInfo.class);
    return Optional.ofNullable(ipInfo).map(ipInfos -> {
    return ipInfos.getData().getRegion();
    }
    ).orElse(null);

// String[] temp = returnStr.split(COMMA);
// if (temp.length < 3) {
// return “0”;//无效IP，局域网测试
// }
// String region = (temp[5].split(COLON))[1].replaceAll(SLASH, STR_NONE);
// region = UnicodeUtil.toString(region);// 省份

// String country = “”;
// String area = “”;
// // String region = “”;
// String city = “”;
// String county = “”;
// String isp = “”;
// for (int i = 0; i < temp.length; i++) {
// switch (i) {
// case 1:
// // 国家
// country = UnicodeUtil.toString((temp[i].split(COLON))[2].replaceAll(SLASH, STR_NONE));
// break;
// case 3:
// // 地区
// area = UnicodeUtil.toString((temp[i].split(COLON))[1].replaceAll(SLASH, STR_NONE));
// break;
// case 5:
// // 省份
// region = UnicodeUtil.toString((temp[i].split(COLON))[1].replaceAll(SLASH, STR_NONE));
// break;
// case 7:
// // 市区
// city = UnicodeUtil.toString((temp[i].split(COLON))[1].replaceAll(SLASH, STR_NONE));
// break;
// case 9:
// // 地区
// county = UnicodeUtil.toString((temp[i].split(COLON))[1].replaceAll(SLASH, STR_NONE));
// break;
// case 11:
// // ISP公司
// isp = UnicodeUtil.toString((temp[i].split(COLON))[1].replaceAll(SLASH, STR_NONE));
// break;
// default:
// }
// }
// return region;
}
return null;
}

/**
 * unicode 转换成 中文
 *
 * @param theString
 * @return
 */
private static String decodeUnicode(String theString) {
    char aChar;
    int len = theString.length();
    StringBuffer outBuffer = new StringBuffer(len);
    for (int x = 0; x < len; ) {
        aChar = theString.charAt(x++);
        if (aChar == '\\') {
            aChar = theString.charAt(x++);
            if (aChar == 'u') {
                int value = 0;
                for (int i = 0; i < 4; i++) {
                    aChar = theString.charAt(x++);
                    switch (aChar) {
                        case '0':
                        case '1':
                        case '2':
                        case '3':
                        case '4':
                        case '5':
                        case '6':
                        case '7':
                        case '8':
                        case '9':
                            value = (value << 4) + aChar - '0';
                            break;
                        case 'a':
                        case 'b':
                        case 'c':
                        case 'd':
                        case 'e':
                        case 'f':
                            value = (value << 4) + 10 + aChar - 'a';
                            break;
                        case 'A':
                        case 'B':
                        case 'C':
                        case 'D':
                        case 'E':
                        case 'F':
                            value = (value << 4) + 10 + aChar - 'A';
                            break;
                        default:
                            throw new IllegalArgumentException(
                                    "Malformed      encoding.");
                    }
                }
                outBuffer.append((char) value);
            } else {
                if (aChar == 't') {
                    aChar = '\t';
                } else if (aChar == 'r') {
                    aChar = '\r';
                } else if (aChar == 'n') {
                    aChar = '\n';
                } else if (aChar == 'f') {
                    aChar = '\f';
                }
                outBuffer.append(aChar);
            }
        } else {
            outBuffer.append(aChar);
        }
    }
    return outBuffer.toString();
}


/**
 * 根据IP获取城市信息
 *
 * @param ip
 * @return
 */
public String getCity(String ip) {
    return this.getAddresses(ip);
}

// 测试
public static void main(String[] args) {
    IPAddressUtil addressUtils = new IPAddressUtil();
    // 测试ip 219.136.134.157 中国=华南=广东省=广州市=越秀区=电信
    String ip = "219.136.134.157";//   116.252.163.231
    String address = "";
    address = addressUtils.getCity(ip);
    System.out.println(address);
    // 输出结果为：广东省,广州市,越秀区
}

}

映射省市区信息实体：

import lombok.Data;

import java.io.Serializable;

/**

• @author ZLB

• @version 1.0.0

• @date 2019/4/28
  */
  @Data
  public class IpInfo implements Serializable {

  private String code;

  private Datas data;

  @Data
  public class Datas implements Serializable {

   private String ip;
  
   private String country;
  
   private String area;
  
   private String region;
  
   private String city;
  
   private String county;
  
   private String isp;
  
   private String country_id;
  
   private String area_id;
  
   private String region_id;
  
   private String city_id;
  
   private String county_id;
  
   private String isp_id;
  

  }
  }