Android 请求服务端通信

1. 使用时： String result = new Communication().communication("returnObject.action"); 
2. 通信类：
3. 
   
4. public class Communication {       
5.       
6.     public String communication(String urlString){  
7.           
8.         HttpClient client = new DefaultHttpClient();  
9.           
10.           
11.           
12.         client.getConnectionManager().closeIdleConnections(20, TimeUnit.SECONDS);//20秒  
13.           
14.         String result="";  
15.           
16.         String uploadUrl="http://192.168.1.101:8080/SSH"+"/";///http://192.168.10.9/bingo/Server/code  
17.         String MULTIPART_FORM_DATA = "multipart/form-data";   
18.         String BOUNDARY = "---------7d4a6d158c9"; //数据分隔线  
19.           
20.         if (!urlString.equals("")) {  
21.             uploadUrl = uploadUrl+urlString;  
22.           
23.           
24.         try {  
25.             URL url = new URL(uploadUrl);    
26.             HttpURLConnection conn = (HttpURLConnection) url.openConnection();    
27.             conn.setDoInput(true);//允许输入    
28.             conn.setDoOutput(true);//允许输出    
29.             conn.setUseCaches(false);//不使用Cache    
30.             conn.setConnectTimeout(6000);// 6秒钟连接超时  
31.             conn.setReadTimeout(25000);// 25秒钟读数据超时  
32.             conn.setRequestMethod("POST");              
33.             conn.setRequestProperty("Connection", "Keep-Alive");    
34.             conn.setRequestProperty("Charset", "UTF-8");    
35.             conn.setRequestProperty("Content-Type", MULTIPART_FORM_DATA + "; boundary=" + BOUNDARY);  
36.               
37.             
38.             StringBuilder sb = new StringBuilder();    
39.                 
40.             //上传的表单参数部分，格式请参考文章    
41. //          for (Map.Entry entry : params.entrySet()) {//构建表单字段内容    
42. //              sb.append("--");    
43. //              sb.append(BOUNDARY);    
44. //              sb.append("\r\n");    
45. //              sb.append("Content-Disposition: form-data; name=\""+ entry.getKey() + "\"\r\n\r\n");    
46. //              sb.append(entry.getValue());    
47. //              sb.append("\r\n");    
48. //          }    
49.   
50.               
51.             DataOutputStream dos = new DataOutputStream(conn.getOutputStream());  
52.             dos.write(sb.toString().getBytes());  
53.             dos.writeBytes("--" + BOUNDARY + "--\r\n");  
54.               dos.flush();  
55.   
56.               InputStream is = conn.getInputStream();  
57.               InputStreamReader isr = new InputStreamReader(is, "utf-8");  
58.               BufferedReader br = new BufferedReader(isr);  
59.               result = br.readLine();  
60.              
61.                 
62.         }catch (Exception e) {  
63.             result = "{\"ret\":\"898\"}";  
64.         }  
65.     }  
66.         return result;  
67.           
68.     }  
69. }  

原文地址：

http://blog.youkuaiyun.com/z104207/article/details/6672109，感谢博主