java 实现地址到经纬度坐标的转化

思路是：通过传入地址作为参数拼接url调用百度地图，然后解析返回的页面，提取经纬度坐标。

以下为具体步骤

1.  public void getPoint(String address){  
2.          try {    
3.                 String sCurrentLine;    
4.                 String sTotalString;    
5.                 sCurrentLine = "";    
6.                 sTotalString = "";    
7.                 java.io.InputStream l_urlStream;    
8.                   
9.                 java.net.URL l_url = new java.net.URL("http://api.map.baidu.com/geocoder/v2/?address="+address.replaceAll(" ", "")+"&output=json&ak=702632E1add3d4953d0f105f27c294b9&callback=showLocation");    
10.                 java.net.HttpURLConnection l_connection = (java.net.HttpURLConnection) l_url.openConnection();    
11.                 l_connection.connect();    
12.                 l_urlStream = l_connection.getInputStream();    
13.                 java.io.BufferedReader l_reader = new java.io.BufferedReader(new java.io.InputStreamReader(l_urlStream));     
14.                 String str=l_reader.readLine();  
15.                 //用经度分割返回的网页代码  
16.                 String s=","+"\""+"lat"+"\""+":";  
17.                 String strs[]=str.split(s, 2);  
18.                 String s1="\""+"lng"+"\""+":";  
19.                String a[]=strs[0].split(s1, 2); 
20.                lng坐标(a[1]);  //纬度  
21.                s1="}"+","+"\"";  
22.               String a1[]=strs[1].split(s1, 2);  
23.                lat坐标(a1[0]);  经度  
24.             } catch (Exception e) {    
25.                 e.printStackTrace();    
26.             }    
27.           
28.     }