第四周学习记录

通过调用相关的接口，实现输入“名字”（公司名、公园等）输出“所在区域”（省市区）。

实现：

package Dao;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.sql.SQLException;
import java.util.List;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;
import net.sf.json.JSONNull;
import net.sf.json.JSONObject;
import Dao.LoadDaoImpl;

public class getDiyu{
        public String[] getPosition_name_code(String infos) throws ClassNotFoundException, SQLException{//获取行政区划
            LoadDaoImpl load = new LoadDaoImpl();
            String moreinfo[] = new String[2];
                String[] company = infos.split(" ");
                String info = company[0];//第一单位获取地域
                String position = getLocation(info);
                String first = "";
                @SuppressWarnings("unused")
            String second = "";
                if(position.substring(0,2).equals("北京")||position.substring(0,2).equals("天津")) {
                    String[] dizhi = position.split("区");
                    String[] shixian = dizhi[0].split("市");
                    second = shixian[1]+"区";//获取县级
                    first = dizhi[0]+"区";//获取市区                
                }else if(position.substring(0,2).equals("河北")) {//获取省市县
                    if(position.contains("区")) {
                        String[] dizhi = position.split("区");
                        String[] shixian = dizhi[0].split("市");
                        second = shixian[1]+"区";
                        first = dizhi[0]+"区";
                    }else if(position.contains("县")) {
                        String[] dizhi = position.split("县");
                        String[] shixian = dizhi[0].split("市");
                        second = shixian[1]+"县";
                        first = dizhi[0]+"县";
                    }
               }else {
                    position = "未找到位置信息。";
                    first = "未找到位置信息。";
                }
                moreinfo[0]=first;
                moreinfo[1]=String.valueOf(load.loadcode(second));
                if(moreinfo[1].equals("0"))
                {
                    moreinfo[1]="未找到位置信息。";
                }
                if(moreinfo[0].equals(""))
                {
                    moreinfo[0]="未找到位置信息。";
                }
                return moreinfo;            
     }
     @SuppressWarnings("unchecked")
     //获得经纬度
     public static String getPosition(String lat,String lng){
           String location1="";
           String url="http://api.map.baidu.com/reverse_geocoding/v3/?ak=ld0uqubVfSTAUlXH5qIMN2F3Snsp16LU&output=xml&coordtype=wgs84ll&location="+lat+","+lng;
           //System.out.println(url);
           Document doc = null;
           java.net.HttpURLConnection conn = null;
           InputStream ins = null;
           SAXReader reader = null;
           try{
            //HttpTimeoutHandler hth = new HttpTimeoutHandler(600000);
            URL conURL = new URL(null,url);
            conn = (HttpURLConnection)conURL.openConnection();
            conn.setDoInput(true);
            conn.setDoOutput(true);
            conn.setUseCaches(false);
            ins = conn.getInputStream();
            reader =new SAXReader();
            doc= reader.read(ins);
            Element root=doc.getRootElement();
            Element e=root.element("result");
            Element location=e.element("formatted_address");
            location1=location.asXML();
            location1=location1.substring(location1.indexOf("address>")+8,location1.indexOf("</formatted_address>"));
            List<Element> list = root.elements("location");
            //System.out.println(url);
            for (Element object : list) {
                //System.out.println(url);
                //System.out.println(object.getName());
                for (Element element : (List<Element>) object.elements()) {
                    //System.out.print(((Element) element).getName() + ":");
                    //System.out.print(element.getText() + " ");
                }
                //System.out.println();
            }
            ins.close();
            conn.disconnect();
           }catch (MalformedURLException e) {
            e.printStackTrace();
           } catch (IOException e) {
            e.printStackTrace();   
           } catch (DocumentException e) {
            e.printStackTrace();
           }catch(Exception e){
            e.printStackTrace();
           }finally {
            try {
             if (ins != null) {
              ins.close();
              ins = null;
             }
            } catch (IOException e1) {
             e1.printStackTrace();
            }
            try {
             if (conn != null) {
              conn.disconnect();
              conn = null;
             }
            } catch (Exception e2) {
             e2.printStackTrace();
            }
           }
           return location1;
     }
     public String getLngLat(String address) {
         StringBuffer json = new StringBuffer();
         try {
             URL u = new URL("http://restapi.amap.com/v3/geocode/geo?address="+address+"&output=JSON&key=7f4ffae4074e8b8e4d147190527a4b72");
             URLConnection yc = u.openConnection();
             //读取返回的数据
             BufferedReader in = new BufferedReader(new InputStreamReader(yc.getInputStream(),"UTF-8"));
             String inputline = null;
             while((inputline=in.readLine())!=null){
                 json.append(inputline);
             }
         in.close();
         } catch (Exception e) {
              e.printStackTrace();
          }
         String jsonStr=json.toString();
         JSONObject jsonObject = JSONObject.fromObject(jsonStr);
         //判断输入的位置点是否存在
         /*jsonObject.getJSONArray("geocodes").size()>0*/
         if(!JSONNull.getInstance().equals(jsonObject.get("geocode")))
             return jsonObject.getJSONArray("geocode").getJSONObject(0).get("location").toString();
         else
             return null;
     }
    
    @SuppressWarnings("unchecked")
    //由获取的经纬度得到区域名字
    public static String getLocation(String loc){
        String location2="";
          String url="http://api.map.baidu.com/geocoding/v3/?address="+loc+"10号&output=xml&ak=ld0uqubVfSTAUlXH5qIMN2F3Snsp16LU&callback=showLocation";         
          Document doc = null;
           java.net.HttpURLConnection conn = null;
           InputStream ins = null;
           SAXReader reader = null;
           try{
            URL conURL = new URL(null,url);
            conn = (HttpURLConnection)conURL.openConnection();
            conn.setDoInput(true);
            conn.setDoOutput(true);
            conn.setUseCaches(false);
            ins = conn.getInputStream();
            reader =new SAXReader();
            doc= reader.read(ins);
            Element root=doc.getRootElement();
            Element e=root.element("result");
            System.out.println(loc);         
            Element location=e.element("location");
            Element lng=location.element("lng");
            Element lat=location.element("lat");
            String lng1=lng.asXML();
            String lat1=lat.asXML();
            lng1=lng1.substring(lng1.indexOf("<lng>")+5,lng1.indexOf("</lng>"));
            lat1=lat1.substring(lat1.indexOf("<lat>")+5,lat1.indexOf("</lat>"));
            location2=getPosition(lat1,lng1);
            List<Element> list = root.elements("location");
            for (Element object : list) {
                //System.out.println(object.getName());
                for (Element element : (List<Element>) object.elements()) {
                    //System.out.print(((Element) element).getName() + ":");
                    //System.out.print(element.getText() + " ");
                }
            }
            ins.close();
            conn.disconnect();
           }catch (MalformedURLException e) {
            e.printStackTrace();
           } catch (IOException e) {
            e.printStackTrace();   
           } catch (NullPointerException e) {
            return "未查找到位置信息。";  
           }catch (DocumentException e) {
            e.printStackTrace();
           }catch(Exception e){
            e.printStackTrace();
           }finally {
            try {
             if (ins != null) {
              ins.close();
              ins = null;
             }
            } catch (IOException e1) {
             e1.printStackTrace();
            }
            try {
             if (conn != null) {
              conn.disconnect();
              conn = null;
             }
            } catch (Exception e2) {
             e2.printStackTrace();
            }
           }
           return location2;
    }
    public static String[] getRegion(String company) throws ClassNotFoundException, SQLException {
        getDiyu pos = new getDiyu();
        String moreinfo[] = new String[2];
        moreinfo =  pos.getPosition_name_code(company);
        return moreinfo;
    }  
    public static void main(String[] strgs) throws ClassNotFoundException, SQLException{   
        getRegion("石家庄铁道大学");
    }
}