Android的服务器数据获取 [英] Android server data fetch

问题描述

我想从与用户名和密码保护的服务器上获取一些数据。我知道这两个用户名和密码。由于服务器是活的，数据是持续变化的，我需要每分钟读取的数据以更新应用程序的状态。我知道，可获取数据，并把它转化为一个字符串的唯一功能是：

I want to fetch some data from a server protected with an username and password . I know both the username and password . Since the server is live , the data is continuing changing I need to fetch data every minute to update the application's status . The only function I know that can fetch data and turn it to a string is :

private String getPage() {
            String str = "***";

            try
            {
                HttpClient hc = new DefaultHttpClient();
                HttpPost post = new HttpPost("http://mywebsite.me");
                HttpResponse rp = hc.execute(post);

                if(rp.getStatusLine().getStatusCode() == HttpStatus.SC_OK)
                {
                    str = EntityUtils.toString(rp.getEntity());
                }
            }catch(IOException e){
                e.printStackTrace();
            }  

            return str;
        }

由于服务器有一个登录界面，我不知道如何将它传递。所以，我想帮助的2 thigs： 1 从服务器获取数据和 2 每1或2分钟，我需要刷新我的应用程序，并再次获取。的数据。

Since the server has a logon screen I don't know how to get pass it . So , i'd like help with 2 thigs :1. getting the data from the server and 2. every 1 or 2 minutes I need to refresh my app and fetch again the data .

推荐答案

您可以试试这个一职的对象。 pre-先发制人进行身份认证这种方式。

You can try this for the post object. Pre-emptive authentication is done this way.

    HttpPost post = new HttpPost(url);

    // Prepare the authentication.
    String usernameAuth = "u";
    String passwordAuth = "p";
    post.addHeader("Authorization", "Basic " + 
            Base64.encodeToString((usernameAuth + ":" + passwordAuth).getBytes("UTF-8"),
                android.util.Base64.NO_WRAP));

有关定期运行以下命令：

For running this at regular intervals :

mTimer.scheduleAtFixedRate(new TimerTask() {
  @Override
  public void run() {
       // What you want to do goes here
     }
  }, 0, REFRESH_TIME);

我希望它能帮助。

I hope it helps.

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