服務端調用高德地圖api實現ip定位城市

所需東西：高德地圖的key　　

注意：這個key是 web服務的key  和js的key不是一個key（若沒有則自行建立，建立教程在文末）

高德地圖的api文檔：https://lbs.amap.com/api/webservice/guide/api/ipconfig/ 

 

新建工具類以下：

　　調用時傳IP地址便可獲取對應城市編碼或其餘信息

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服務的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"))){      //調用異常時，拋出返回信息，以便分析（我會在錯誤層統一捕獲並輸出到error日誌）
                throw new FailException("調用高德返回異常: " + json.toJSONString()); } } catch (IOException e) { e.printStackTrace(); throw new FailException("高德獲取城市編碼：", e); } adCode = json.getString("adcode");          //獲取ip定位的城市編碼（高德返回json以下，須要其餘也可自行獲取）
        return adCode; } public static void main(String[] args) { String s = GdUtil.getCityCodeByIp("60.191.12.10"); System.out.println(s); //330100
 } }

高德返回json的格式以下（根據須要自行獲取）：

{
    "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"
}

 

此傳入的ip爲公網ip，因此咱們還須要獲取到請求者的公網ip：

package com.test.utils;

import javax.servlet.http.HttpServletRequest;

/**
 * 請求對象 工具類
 */
public class RequestUtils {

　　/**
     * 獲取請求主機IP地址,若是經過代理進來，則透過防火牆獲取真實IP地址; *
     * @param request * @return
     * @throws
     */
    public final static String getIpAddress(HttpServletRequest request) { // 獲取請求主機IP地址,若是經過代理進來，則透過防火牆獲取真實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; }
}

 

實際使用示例以下：

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("測試獲取訪問者的城市編碼") JSONObject resJson = new JSONObject(); String ip = RequestUtils.getIpAddress(request); String adCode = GdUtil.getCityCodeByIp(ip); resJson.put("cityCode", adCode); return JsonResp.ok(resJson); }
}

經過以上方法即可以成功的獲取到訪問者的城市編碼等信息了

 

高德地圖獲取key：可參考高德教程：https://lbs.amap.com/api/webservice/guide/create-project/get-key

1. 進入個人應用中

2. 若沒有應用則建立新應用

3. 點擊+號添加key

4. 填寫信息，選擇web服務

5. 保存提交

6. 在應用列表下的key列表中出現新添加的key

 

請求參數和響應參數說明（infocode狀態碼可參考：https://lbs.amap.com/api/webservice/guide/tools/info）