java调用高德地图api实现通过ip定位访问者的城市

所需东西:高德地图的key  

注意:这个key是 web服务的key  和js的key不是一个key(若没有则自行创建,创建教程在文末)

高德地图的api文档:https://lbs.amap.com/api/webservice/guide/api/ipconfig/

新建工具类如下:

  调用时传IP地址即可获取对应城市编码或其他信息

package com.test.utils.gaode;

import com.alibaba.fastjson.JSONException;
import com.alibaba.fastjson.JSONObject;
import com.test.commons.FailException; import java.io.*;
import java.net.URL;
import java.nio.charset.Charset; public class GdUtil { private static final String KEY = "17abf77d3c69e0d16c02e764f4fe6be4"; //web服务的key private static String readAll(Reader rd) throws IOException {
StringBuilder sb = new StringBuilder();
int cp;
while ((cp = rd.read()) != -1) {
sb.append((char) cp);
}
return sb.toString();
} private static JSONObject readJsonFromUrl(String url) throws IOException, JSONException {
InputStream is = new URL(url).openStream();
try {
BufferedReader rd = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8")));
String jsonText = readAll(rd);
JSONObject json = JSONObject.parseObject(jsonText);
return json;
} finally {
is.close();
}
} public static String getCityCodeByIp(String ipAddress) {
JSONObject json = null;
String adCode = "";
try {
json = readJsonFromUrl("http://restapi.amap.com/v3/ip?ip=" + ipAddress + "&key=" + KEY + "");
if ("0".equals(json.getString("status"))){ //调用异常时,抛出返回信息,以便分析(我会在错误层统一捕获并输出到error日志)
throw new FailException("调用高德返回异常: " + json.toJSONString());
}
} catch (IOException e) {
e.printStackTrace();
throw new FailException("高德获取城市编码:", e);
}
adCode = json.getString("adcode"); //获取ip定位的城市编码(高德返回json如下,需要其他也可自行获取)
return adCode;
} public static void main(String[] args) {
String s = GdUtil.getCityCodeByIp("60.191.12.10");
System.out.println(s); // }
}

高德返回json的格式如下(根据需要自行获取):

{
    "status":"1",
    "info":"OK",
    "infocode":"10000",
    "province":"浙江省",
    "city":"杭州市",
    "adcode":"330100",
    "rectangle":"119.8824799,29.95931271;120.5552208,30.52048536"
}

此传入的ip为公网ip,所以我们还需要获取到请求者的公网ip

package com.test.utils;

import javax.servlet.http.HttpServletRequest;

/**
* 请求对象 工具类
*/
public class RequestUtils {
  /**
* 获取请求主机IP地址,如果通过代理进来,则透过防火墙获取真实IP地址;
*
* @param request
* @return
* @throws
*/
public final static String getIpAddress(HttpServletRequest request) {
// 获取请求主机IP地址,如果通过代理进来,则透过防火墙获取真实IP地址
String ip = request.getHeader("X-Forwarded-For"); if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
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();
}
} else if (ip.length() > 15) {
String[] ips = ip.split(",");
for (String ip1 : ips) {
String strIp = (String) ip1;
if (!("unknown".equalsIgnoreCase(strIp))) {
ip = strIp;
break;
}
}
}
return ip;
}
}

实际使用示例如下:

package com.test.web.common;

import com.alibaba.fastjson.JSONObject;
import com.test.utils.RequestUtils;
import com.test.utils.gaode.GdUtil;
import org.apache.log4j.Logger; import javax.servlet.http.HttpServletRequest; /**
*/
@RestController
@RequestMapping(value = "/api/core")
public class TestController {
  private Logger log = Logger.getLogger(this.getClass());
  @RequestMapping(value = "/test", method = RequestMethod.POST)
public JsonResp test(@RequestBody JSONObject reqJson, HttpServletRequest request) {
     log.debug("测试获取访问者的城市编码")
JSONObject resJson = new JSONObject(); String ip = RequestUtils.getIpAddress(request);
String adCode = GdUtil.getCityCodeByIp(ip);
resJson.put("cityCode", adCode); return JsonResp.ok(resJson);
}
}

通过以上方法便可以成功的获取到访问者的城市编码等信息了

高德地图获取key:可参考高德教程:https://lbs.amap.com/api/webservice/guide/create-project/get-key

1. 进入我的应用中

2. 若没有应用则创建新应用

3. 点击+号添加key

4. 填写信息,选择web服务

5. 保存提交

6. 在应用列表下的key列表中出现新添加的key

java调用高德地图api实现通过ip定位访问者的城市

请求参数和响应参数说明(infocode状态码可参考:https://lbs.amap.com/api/webservice/guide/tools/info

java调用高德地图api实现通过ip定位访问者的城市

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