基于四维地图（四维图新）api进行逆地理编码

基于四维地图，输入经纬度坐标，获得道路名称，以及poi信息。
四维地图api接口返回的数据有json和xml两种格式。本篇是对xml数据进行解析。
使用的是XStream对xml文件进行解析。
返回的xml格式数据如下。

<xml>
   <result>
      <district_text>北京市>北京市>顺义区</district_text>
      <address>誉天下社区服务站西163米</address>
      <road>
         <lng>116.55100</lng>
         <distance>43</distance>
         <lanenumber>一条车道</lanenumber>
         <roadtype>无属性</roadtype>
         <limit_speed>40.0</limit_speed>
         <linkid>737249</linkid>
         <urban>1</urban>
         <name>花园六路</name>
         <width>(5.5米~13米]</width>
         <road_level>乡镇村道</road_level>
         <lat>40.05941</lat>
         <road_level_code>5</road_level_code>
      </road>
      <district>110113000</district>
      <point>
         <number>机场杨林出口1000米西北方向140米</number>
         <lng>116.55255</lng>
         <name>誉天下社区服务站</name>
         <lat>40.05973</lat>
      </point>
      <road_address>花园六路西北43米</road_address>
  </result>
  <status>ok</status>
</xml>

所需要的依赖如下，不一定全。

      <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>
            <version>4.4.10</version>
        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
            <version>4.5.6</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.7</version>
        </dependency>
        <dependency>
            <groupId>com.thoughtworks.xstream</groupId>
            <artifactId>xstream</artifactId>
            <version>1.4.11.1</version>
        </dependency>

代码中有个APIKEY我没贴，测试的时候是得不到返回的数据的，因为这个uid是购买四维官方地图服务之后提供的。
代码如下：

package com.example.map2.map;

import com.thoughtworks.xstream.XStream;
import com.thoughtworks.xstream.io.xml.DomDriver;
import org.apache.commons.lang3.StringUtils;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClientBuilder;
import org.apache.http.util.EntityUtils;

import java.io.IOException;
import java.util.concurrent.atomic.AtomicInteger;

public class SiweiMapXStream {
    public static AtomicInteger num=new AtomicInteger(0);
    public static String[] SERVERS=new String[]{
            "a.map.icttic.cn",
            "b.map.icttic.cn",
            "c.map.icttic.cn",
    };

    public static void main(String[] args) {
        String lng="116.54475678417967";
        String lat="40.058573067126176";
        reserveDecode(lng,lat);
    }
    public static String reserveDecode(String lng,String lat){
        String location=lng+","+lat;
        String APIKEY="xxxxx";//由于四维地图是付费服务，此处使用四维官方提供的uid即可，我原来测试使用的就不贴了，毕竟不是我买的
        String server=getServer();
        String url="http://"+server+":81/SE_RGC3?st=Rgc3&point="+location+"&uid="+APIKEY+"&output=xml&cd=wgs84&type=11";
        System.out.println(url);
       try {
            String xmlString = doGet(url);
            XStream xstream = new XStream(new DomDriver());
            XStream.setupDefaultSecurity(xstream);
            xstream.allowTypes(new Class[]{Params.class});//xStream对象设置默认安全防护，同时设置允许的类
            xstream.alias("xml", Params.class);//此处"xml"对应xml文件中的根节点名称
            Params params = (Params) xstream.fromXML(xmlString);
            System.out.println(params.toString());
        }catch (Exception e){
            return "";
        }
        return null;
    }

    public static class Params{
        public Result result;
        public String status;
        public String toString(){
            try{
                return result.equals(";;") ? "":result.toString();
            }catch (Exception e){
                return "";
            }
        }
    }
    private static class Result{
        public String district_text;
        public String address;
        public String district;
        public String road_address;
        public Point point;
        public Road road;
        public String toString(){
            try{
                district_text=StringUtils.isBlank(district_text) ? "" : district_text.replaceAll(">","");
                return district_text+";"+road.toString()+";"+point.toString();
            }catch (Exception e){
                return "";
            }
        }
    }

    private static class Road{
        public String name;
        public String name2;//四维地图api新增的一个字段，当输入特殊经纬度时会显示此字段，一般不显示
        public String lng;
        public String distance;
        public String lanenumber;
        public String roadtype;
        public String limit_speed;
        public String linkid;
        public String urban;
        public String width;
        public String road_level;
        public String lat;
        public String road_level_code;
        public String toString(){
            try{
                return StringUtils.isBlank(name)? (StringUtils.isBlank(name2)? "" : name2) : name;
            }catch (Exception e){
                return "";
            }
        }
    }

    private static class Point{
        public String name;
        public String number;
        public String lng;
        public String lat;
        public Point(){}
        public String toString(){
            try{
                return StringUtils.isBlank(name) ? "" : name;
            }catch (Exception e){
                return "";
            }
        }
    }

    public static String getServer(){
        num.addAndGet(1);
        int i=num.get()%SERVERS.length;
        return SERVERS[i];
    }
    public static String doGet(String url){
        //创建http客户端
        CloseableHttpClient client= HttpClientBuilder.create().build();
        //请求方式
        HttpGet httpGet1=new HttpGet(url);
        //创建响应实体
        CloseableHttpResponse response1=null;
        try {
            response1= client.execute(httpGet1);
            HttpEntity responseEntity=response1.getEntity();
            if(responseEntity != null){
                return EntityUtils.toString(responseEntity);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }finally {
                try {
                    if(client != null){
                    client.close();
                    }
                    if (response1 != null){
                        response1.close();
                    }
                } catch (IOException e) {
                    e.printStackTrace();
                }

        }
        return null;
    }
}

运行结果如下：

本文地址：https://blog.csdn.net/qq_37786081/article/details/107367455