android开发httpGet httpPost httpURLConnection httpClient

<p style="margin: 10px auto; padding-top: 0px; padding-bottom: 0px; line-height: 18px; color: rgb(68, 68, 68); font-family: tahoma, arial, sans-serif;"><strong><span style="font-size:18px;">一、HttpClinet方式</span></strong></p><p style="margin: 10px auto; padding-top: 0px; padding-bottom: 0px; line-height: 18px; color: rgb(68, 68, 68); font-family: tahoma, arial, sans-serif;"><strong><span style="font-size:18px;">1、HTTP GET 示例:</span></strong></p>

<span style="font-size:14px;"> 1   public class TestHttpGetMethod{  
 2     public void get(){  
 3         BufferedReader in = null;  
 4         try{  
 5             HttpClient client = new DefaultHttpClient();  
 6             HttpGet request = new HttpGet();  
 7             request.setURI("http://w26.javaeye.com");  
 8             HttpResponse response = client.execute(request);   
 9             in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));     
10             StringBuffer sb = new StringBuffer("");   
11             String line = "";  
12             String NL = System.getProperty("line.separator");  
13             while((line = in.readLine()) != null){  
14                 sb.append(line + NL); 
15 
16             }  
17             in.close();  
18             String page = sb.toString();  
19             Log.i(TAG, page);  
20         }catch(Exception e){  
21             Log.e(TAG,e.toString())  
22         }finally{  
23             if(in != null){  
24                 try{  
25                     in.close();  
26                 }catch(IOException ioe){  
27                     Log.e(TAG, ioe.toString());  
28                 }  
29             }  
30         }  
31     }  
32 }</span>

 <span style="font-size:14px;">1 public class TestHttpPostMethod{  
 2     public void post(){  
 3         BufferedReader in = null;  
 4         try{  
 5             HttpClient client = new DefaultHttpClient();  
 6             HttpPost request = new HttpPost("http://localhost/upload.jsp");   
 7             List<NameValuePair> postParams = new ArrayList<NameValuePair>();  
 8             postParams.add(new BasicNameValuePair("filename", "sex.mov"));  
 9             UrlEncodeFormEntity formEntity = new UrlEncodeFormEntity(postParams);  
10             request.setEntity(formEntity);  
11             HttpResponse response = client.execute(request);  
12             in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));     
13             StringBuffer sb = new StringBuffer("");   
14             String line = "";  
15             String NL = System.getProperty("line.separator");  
16             while((line = in.readLine()) != null){  
17                 sb.append(line + NL);  
18             }  
19             in.close();  
20             String result = sb.toString();  
21             Log.i(TAG, result );  
22         }catch(Exception e){  
23             Log.e(TAG,e.toString())  
24         }finally{  
25             if(in != null){  
26                 try{  
27                     in.close();  
28                 }catch(IOException ioe){  
29                     Log.e(TAG, ioe.toString());  
30                 }  
31             }  
32         }  
33     } 
34 }</span>

<span style="font-size:14px;"> 1 URL url = null;
 2 HttpURLConnection conn = null;
 3 InputStream in = null;
 4 OutputStream out = null;
 5 byte[] data ="测试字符串".getBytes();
 6 try{
 7    url =new URL("www.xxx.com/servlet");
 8    conn = (HttpURLConnection) url.openConnection();
 9 
10    //设置连接属性
11    conn.setDoOutput(true);// 使用 URL 连接进行输出
12    conn.setDoInput(true);// 使用 URL 连接进行输入
13    conn.setUseCaches(false);// 忽略缓存
14    conn.setConnectTimeout(30000);//设置连接超时时长，单位毫秒
15    conn.setRequestMethod("POST");//设置请求方式，POST or GET，注意：如果请求地址为一个servlet地址的话必须设置成POST方式
16 
17 //设置请求头
18   conn.setRequestProperty("Accept", "*/*");
19   conn.setRequestProperty("Connection", "Keep-Alive");
20   conn.setRequestProperty("Accept-Charset", "utf-8");
21   if (data != null) {
22      out = conn.getOutputStream();
23      out.write(data);
24   }
25   int code = conn.getResponseCode();
26   if(code ==200){
27      in = conn.getInputStream();// 可能造成阻塞
28      long len = conn.getContentLength();
29      byte[] bs = new byte[(int) len];//返回结果字节数组
30      int all = 0;
31   int dn = 0;
32      while ((dn = in.read(bs, all, 1)) > 0) {
33        all += dn;
34        if (all == len) {
35        break;
36        }
37      }
38   }
39 }</span>