JAVA获取定位信息

经过用户IP获取用户地址信息node

首先获得ip，有两种方式json

第一种方式：经过jsoup从一些工具网页获取api

第二种方式：经过获取用户对象信息获得app

前者须要jsoup的jar包，不须要用户请求；
后者须要用户发出请求，有request对象。工具

1.1 jsoup抓取ip信息测试

public static String getPublicIP() { String ip = ""; try { Document doc = Jsoup.connect("http://www.ip138.com/ip2city.asp").ignoreContentType(false).get(); Elements els = doc.select("center"); for (org.jsoup.nodes.Element el : els) { ip = el.text(); } ip = ip.replaceAll("[^0-9.]", ""); } catch (IOException e1) { e1.printStackTrace(); }finally { } return ip; }

1.2 request获取ipui

public static String getIpAddr(HttpServletRequest request) { String ip = request.getHeader("x-forwarded-for"); 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.getRemoteAddr(); } return ip; }

本地启动的服务返回的是127.0.0.1;url

内网访问获取的是内网IP地址;spa

远程访问获取到公网IP。code

定义一个方法，将字符拼接成字符串

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(); }

将URL资源解析成json对象

public static JSONObject readJsonFromUrl(String url) throws IOException, JSONException { InputStream is = null; try { is = new URL(url).openStream(); BufferedReader rd = new BufferedReader(new InputStreamReader(is, Charset.forName("UTF-8"))); String jsonText = readAll(rd); JSONObject json = JSONObject.fromObject(jsonText); // System.out.println(json);
            return json; } finally { //关闭输入流
 is.close(); } }

传入用户IP获取当地地址名

public static String getAddrName(String IP) throws JSONException, IOException{ //这里调用百度的ip定位api服务 详见 http://api.map.baidu.com/lbsapi/cloud/ip-location-api.htm
 JSONObject json = readJsonFromUrl("http://api.map.baidu.com/location/ip?ak=iTrwV0ddxeFT6QUziPQh2wgGofxmWkmg&ip="+IP); /* 获取到的json对象： * {"address":"CN|河北|保定|None|UNICOM|0|0", * "content":{"address_detail":{"province":"河北省","city":"保定市","street":"","district":"","street_number":"","city_code":307}, * "address":"河北省保定市","point":{"x":"12856963.35","y":"4678360.5"}}, * "status":0} */
        //若是IP是本地127.0.0.1或者内网IP192.168则status分别返回1和2
        String status = json.opt("status").toString(); if(!"0".equals(status)){ return ""; } JSONObject content=((JSONObject) json).getJSONObject("content");              //获取json对象里的content对象
        JSONObject addr_detail=((JSONObject) content).getJSONObject("address_detail");//从content对象里获取address_detail
        String city=addr_detail.opt("city").toString();                             //获取市名，能够根据具体需求更改
        return city; }

测试一下,全部方法都是静态的，类名getPuplic

//String scity=getPuplic.getAddrName("218.83.245.210"); //上海IP
    String IP1 = getPuplic.getPublicIP(); String IP2 = getPuplic.getIpAddr(request); String scity1=getPuplic.getAddrName(IP1); String scity2=getPuplic.getAddrName(IP2); logger.info("---------jsoup定位-------------"+scity1); logger.info("---------request-------------"+scity2);

用第一种方式须要引入的包

import org.jsoup.Connection; import org.jsoup.Jsoup; import org.jsoup.select.Elements; import net.sf.json.JSONException; import net.sf.json.JSONObject;

--------------------------------请多多指教