java利用HttpURLConnection传数据

String urlStr = "http://localhost:8080/user/sendMessage"; 
2.    String result = ""; 
3.    URL url = null; 
4.    HttpURLConnection conn = null; 
5.    OutputStream os = null; 
6.    BufferedReader in = null; 
7.    try { 
8.        url = new URL(urlStr); 
9.        conn= (HttpURLConnection) url.openConnection(); 
10.        conn.setDoInput(true); 
11.        conn.setDoOutput(true); 
12.        conn.setUseCaches(false); 
13.        //设置连接超时 
14.        conn.setConnectTimeout(50000); 
15.        //设置读取超时 
16.        conn.setReadTimeout(50000);  
17.        conn.setRequestMethod("POST"); 
18.        conn.setRequestProperty("Content-Type", "application/x-www-form-urlencoded"); 
19.        conn.connect(); 
20.        //参数 
21.        String param = "name=xxx&token=xxx"; 
22.        //写入数据 
23.        os = conn.getOutputStream(); 
24.        os.write(param.getBytes("UTF-8")); 
25.        os.flush(); 
26.        os.close(); 
27.        //读取返回数据 
28.        if (conn.getResponseCode() == HttpURLConnection.HTTP_OK) { 
29.            in = new BufferedReader(new InputStreamReader(conn.getInputStream(), "utf-8")); 
30.            String inputLine; 
31.            while ((inputLine = in.readLine()) != null) { 
32.                result += inputLine; 
33.            } 
34.            in.close(); 
35.        } 
36.    } catch (Exception e) { 
37.        e.printStackTrace(); 
38.    } finally { 
39.        if (conn != null) conn.disconnect(); 
40.    } 


2、get请求



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1.String urlStr = "http://localhost:8080/user/sendMessage?&name=xxx&token=xxx"; 
2.    BufferedReader reader = null; 
3.    String line = null; 
4.    StringBuffer result = new StringBuffer(); 
5.    URL url; 
6.    try { 
7.        url = new URL(urlStr); 
8.        HttpURLConnection con = (HttpURLConnection) url.openConnection(); 
9.        con.setUseCaches(false); 
10.        reader = new BufferedReader(new InputStreamReader(con.getInputStream(), "UTF-8")); 
11.        while (null != (line = reader.readLine())) { 
12.            result.append(line); 
13.        } 
14.        if (reader != null) { 
15.            reader.close(); 
16.        } 
17.    } catch (Exception e) { 
18.        e.printStackTrace(); 
19.    }