java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 jueyue 返回格式：Map<String,Object> map map.put("status", 

* reader.nextString());//状态 map.put("result", list);//查询结果 

* list<map<String,String>> 

* 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}}