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
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）