服务端java实现根据地址从百度API获取经纬度

代码：

 

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1. package com.pb.baiduapi;  
2.    
3. import java.io.BufferedReader;  
4. import java.io.IOException;  
5. import java.io.InputStreamReader;  
6. import java.io.UnsupportedEncodingException;  
7. import java.net.MalformedURLException;  
8. import java.net.URL;  
9. import java.net.URLConnection;  
10.    
11. /**  
12. * 获取经纬度 
13. *  
14. * @author Sunny  
15. * 密钥:f247cdb592eb43ebac6ccd27f796e2d2  
16. */   
17. public class GetLatAndLngByBaidu {   
18. /**  
19. * @param addr  
20. * 查询的地址  
21. * @return  
22. * @throws IOException  
23. */   
24. public Object[] getCoordinate(String addr) throws IOException {   
25. String lng = null;//经度  
26. String lat = null;//纬度  
27. String address = null;   
28. try {   
29. address = java.net.URLEncoder.encode(addr, "UTF-8");   
30. }catch (UnsupportedEncodingException e1) {   
31. e1.printStackTrace();   
32. }   
33. String key = "f247cdb592eb43ebac6ccd27f796e2d2";   
34. String url = String .format("http://api.map.baidu.com/geocoder?address=%s&output=json&key=%s", address, key);   
35. URL myURL = null;   
36. URLConnection httpsConn = null;   
37. try {   
38. myURL = new URL(url);   
39. } catch (MalformedURLException e) {   
40. e.printStackTrace();   
41. }   
42. InputStreamReader insr = null;  
43. BufferedReader br = null;  
44. try {   
45. httpsConn = (URLConnection) myURL.openConnection();// 不使用代理   
46. if (httpsConn != null) {   
47. insr = new InputStreamReader( httpsConn.getInputStream(), "UTF-8");   
48. br = new BufferedReader(insr);   
49. String data = null;   
50. int count = 1;  
51. while((data= br.readLine())!=null){   
52. if(count==5){  
53. lng = (String)data.subSequence(data.indexOf(":")+1, data.indexOf(","));//经度  
54. count++;  
55. }else if(count==6){  
56. lat = data.substring(data.indexOf(":")+1);//纬度  
57. count++;  
58. }else{  
59. count++;  
60. }  
61. }   
62. }   
63. } catch (IOException e) {   
64. e.printStackTrace();   
65. } finally {  
66. if(insr!=null){  
67. insr.close();  
68. }  
69. if(br!=null){  
70. br.close();  
71. }  
72. }  
73. return new Object[]{lng,lat};   
74. }   
75.    
76.    
77. public static void main(String[] args) throws IOException {  
78. GetLatAndLngByBaidu getLatAndLngByBaidu = new GetLatAndLngByBaidu();  
79. Object[] o = getLatAndLngByBaidu.getCoordinate("成都市天府四街");  
80. System.out.println(o[0]);//经度  
81. System.out.println(o[1]);//纬度  
82. }  
83.    
84. }  

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

    }

}