zoukankan      html  css  js  c++  java
  • JAVA获取定位信息

    通过用户IP获取用户地址信息

    首先得到ip,有两种方式

    第一种方式:通过jsoup从一些工具网页获取

    第二种方式:通过获取用户对象信息得到

    前者需要jsoup的jar包,不需要用户请求; 
    后者需要用户发出请求,有request对象。

    1.1 jsoup抓取ip信息

    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ip

    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;

    内网访问获取的是内网IP地址;

    远程访问获取到公网IP。

    1. 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();
        }
    1. 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();
            }
        }
    1. 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}
            */
            //如果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,可以根据具体需求更改
            return city;
        }

    测试一下,所有方法都是静态的,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);

    用第一种方式需要引入的包

    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

  • 相关阅读:
    docker nginx无法连通php
    docker查看ip
    使用docker-compose部署nginx
    docker启动服务---------------nginx+php
    docker下安装kafka和kafka-manager
    docker启动服务---------------kafka+zookeeper
    docker将镜像推送到阿里云
    Docker常用命令
    docker-compose编写示例
    docker启动服务
  • 原文地址:https://www.cnblogs.com/livedian/p/11411043.html
Copyright © 2011-2022 走看看