java工具类(一)之服务端java实现根据地址从百度API获取经纬度

服务端java实现根据地址从百度API获取经纬度

代码：

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;

/**
* 获取经纬度
*
* @author Sunny
* 密钥:f247cdb592eb43ebac6ccd27f796e2d2
*/
public class GetLatAndLngByBaidu {
/**
* @param addr
* 查询的地址
* @return
* @throws IOException
*/
public Object[] getCoordinate(String addr) throws IOException {
String lng = null;//经度
String lat = null;//纬度
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(","));//经度
count++;
}else if(count==6){
lat = data.substring(data.indexOf(":")+1);//纬度
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]);//经度
System.out.println(o[1]);//纬度
}

}

输出结果：104.04701

30.548397

调用以下路径根据经纬度获取地址，返回数据为JSON格式，

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

返回结果：

{

"status": 0,

"result": {

"location": {

"lng": 104.04701001273,

"lat": 30.548396923974

},

"formatted_address": "四川省成都市武侯区天府四街",

"business": "",

"addressComponent": {

"city": "成都市",

"district": "武侯区",

"province": "四川省",

"street": "天府四街",

"street_number": ""

},

"pois": [

{

"addr": "四川省成都市武侯区天府四街",

"cp": "NavInfo",

"distance": "144",

"name": "保利·心语花园",

"poiType": "地产小区",

"point": {

"x": 104.04823889466,

"y": 30.54874673449

},

"tel": "",

"uid": "881965b85a8d8a977369d348",

"zip": ""

},

{

"addr": "四川省成都市武侯区天府四街",

"cp": "NavInfo",

"distance": "629",

"name": "逸都国际",

"poiType": "地产小区",

"point": {

"x": 104.05247889667,

"y": 30.547152788724

},

"tel": "",

"uid": "e49f869c4f156be9c6effb6b",

"zip": ""

},

{

"addr": "四川省成都市武侯区剑南大道",

"cp": "NavInfo",

"distance": "881",

"name": "世豪广场",

"poiType": "地产小区",

"point": {

"x": 104.05252381195,

"y": 30.553318490823

},

"tel": "",

"uid": "a2a7b0b167a0e1997adbd206",

"zip": ""

},

{

"addr": "四川省成都市武侯区德赛三街",

"cp": "NavInfo",

"distance": "989",

"name": "顾客停车场",

"poiType": "交通设施",

"point": {

"x": 104.04942465794,

"y": 30.555798655385

},

"tel": "",

"uid": "d135a6e15571911483a00cfe",

"zip": ""

}

],

"cityCode": 75

}

}