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=http://www.mamicode.com/ 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}}