服務端java實現根據地址從百度API獲取經緯度

程式碼：

package com.pb.baiduapi;
 
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
 
/** 
* 獲取經緯度
* 
* @author
 
 Sunny 
* 金鑰:f247cdb592eb43ebac6ccd27f796e2d2 
*/ 
public class GetLatAndLngByBaidu { 
/** 
* @param addr 
* 查詢的地址 
* @return 
* @throws IOException 
*/ 
public Object[] getCoordinate(String addr) throws IOException { 
String lng = null;//經度
String lat = null;//緯度
String address = null; 
try { 
address = java.net.URLEncoder.encode(addr, "UTF-8"
 
); 
}catch (UnsupportedEncodingException e1) { 
e1.printStackTrace(); 
} 
String key = "f247cdb592eb43ebac6ccd27f796e2d2"; 
String url = String .format("http://api.map.baidu.com/geocoder?address=%s&output=json&key=%s", address, key); 
URL myURL = null; 
URLConnection httpsConn = null; 
try { 
myURL = new
 
 URL(url); 
} catch (MalformedURLException e) { 
e.printStackTrace(); 
} 
InputStreamReader insr = null;
BufferedReader br = null;
try { 
httpsConn = (URLConnection) myURL.openConnection();// 不使用代理 
if (httpsConn != null) { 
insr = new InputStreamReader( httpsConn.getInputStream(), "UTF-8"); 
br = new BufferedReader(insr); 
String data = null; 
int count = 1;
while((data= br.readLine())!=null){ 
if(count==5){
lng = (String)data.subSequence(data.indexOf(":")+1, data.indexOf(","));//經度
count++;
}else if(count==6){
lat = data.substring(data.indexOf(":")+1);//緯度
count++;
}else{
count++;
}
} 
} 
} catch (IOException e) { 
e.printStackTrace(); 
} finally {
if(insr!=null){
insr.close();
}
if(br!=null){
br.close();
}
}
return new Object[]{lng,lat}; 
} 
 
 
public static void main(String[] args) throws IOException {
GetLatAndLngByBaidu getLatAndLngByBaidu = new GetLatAndLngByBaidu();
Object[] o = getLatAndLngByBaidu.getCoordinate("成都市天府四街");
System.out.println(o[0]);//經度
System.out.println(o[1]);//緯度
}
 
}

輸出結果：104.04701

                   30.548397

呼叫以下路徑根據經緯度獲取地址，返回資料為JSON格式，

http://api.map.baidu.com/geocoder/v2/?ak=pmCgmADsAsD9rEXkqWNcTzjd&location=30.548397,104.04701&output=json&pois=1

返回結果：

{

    "status": 0,

    "result": {

        "location": {

            "lng": 104.04701001273,

            "lat": 30.548396923974

        },

        "formatted_address": "四川省成都市武侯區天府四街",

        "business": "",

        "addressComponent": {

            "city": "成都市",

            "district": "武侯區",

            "province": "四川省",

            "street": "天府四街",

            "street_number": ""

        },

        "pois": [

            {

                "addr": "四川省成都市武侯區天府四街",

                "cp": "NavInfo",

                "distance": "144",

                "name": "保利·心語花園",

                "poiType": "地產小區",

                "point": {

                    "x": 104.04823889466,

                    "y": 30.54874673449

                },

                "tel": "",

                "uid": "881965b85a8d8a977369d348",

                "zip": ""

            },

            {

                "addr": "四川省成都市武侯區天府四街",

                "cp": "NavInfo",

                "distance": "629",

                "name": "逸都國際",

                "poiType": "地產小區",

                "point": {

                    "x": 104.05247889667,

                    "y": 30.547152788724

                },

                "tel": "",

                "uid": "e49f869c4f156be9c6effb6b",

                "zip": ""

            },

            {

                "addr": "四川省成都市武侯區劍南大道",

                "cp": "NavInfo",

                "distance": "881",

                "name": "世豪廣場",

                "poiType": "地產小區",

                "point": {

                    "x": 104.05252381195,

                    "y": 30.553318490823

                },

                "tel": "",

                "uid": "a2a7b0b167a0e1997adbd206",

                "zip": ""

            },

            {

                "addr": "四川省成都市武侯區德賽三街",

                "cp": "NavInfo",

                "distance": "989",

                "name": "顧客停車場",

                "poiType": "交通設施",

                "point": {

                    "x": 104.04942465794,

                    "y": 30.555798655385

                },

                "tel": "",

                "uid": "d135a6e15571911483a00cfe",

                "zip": ""

            }

        ],

        "cityCode": 75

    }

}

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