在Android中制作考勤应用程序

Question

我必须为大学制作考勤应用程序。该应用程序将从大学网站获取数据并根据用户登录名和密码将其显示在应用程序上。

当我们登录大学的网站时，我们必须在我的应用上输入 id 和 password，以便用户可以在应用本身上看到它。

我搜索过httpurlconnection、httpget、httppost、jsoup。

到现在为止，我已经明白我必须让httprequest加载学院的考勤网站，然后httppost发布用户名和密码，然后jsoup从HTML页面获取数据。

但是我看到的教程只是请求 JSON 页面，但是如何请求 HTML 页面？并发布登录到它？

这是我尝试并从 JSON 收集数据的方法

private  TextView textresponse1;
private ProgressDialog progressDialog;
@Override
protected void onCreate(Bundle savedInstanceState) {

      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      Button Get= (Button) findViewById(R.id.httprequest);
      textresponse1= (TextView)findViewById(R.id.textresponse);
      progressDialog=new ProgressDialog(this);
      Get.setOnClickListener(this);
}

@Override
public void onClick(View v) {    

      new JSONTask().execute("https://jsonparsingdemo-cec5b.firebaseapp.com/jsonData/moviesDemoList.txt");
      progressDialog.setMessage("Collecting Data");
      progressDialog.show();
 }

public class JSONTask extends AsyncTask<String,String,String >{

    @Override
    protected String doInBackground(String... params) {
        BufferedReader reader = null;
        HttpURLConnection connection = null;
        try {
              URL url=new URL(params[0]);
              connection=(HttpURLConnection) url.openConnection();
              connection.connect();

              InputStream stream=connection.getInputStream();

              reader=new BufferedReader(new InputStreamReader(stream));

              String line="";
              StringBuffer buffer=new StringBuffer();
              while ((line = reader.readLine())!=null) {
                    buffer.append(line);
                }

              String finaljosn=buffer.toString();
              StringBuffer add =new StringBuffer();
              JSONObject parentobject=new JSONObject(finaljosn);
              JSONArray parentarray=parentobject.getJSONArray("movies");
              for(int i=0;i<parentarray.length();i++) {
                   JSONObject moviename = parentarray.getJSONObject(i);

                   String finalmovie = moviename.getString("movie");
                   int finalyear = moviename.getInt("year");
                   add.append(finalmovie +"- "+finalyear + "\n");
               }
                 return add.toString();
              // return finalmovie +" -Rushabh- " +finalyear;

         } catch (MalformedURLException e) {
              e.printStackTrace();
         } catch (IOException e) {
              e.printStackTrace();
         } catch (JSONException e) {
              e.printStackTrace();
         } finally {
              if (connection!=null) {
                  connection.disconnect();
              }
              try {
                    if (reader!=null) {
                        reader.close();
                   }
              } catch (IOException e) {
                    e.printStackTrace();
              }
           }
          return null;
       }

    @Override
    protected void onPostExecute(String result) {
          super.onPostExecute(result);
          progressDialog.dismiss();
          textresponse1.setText(result);
    }
}

Answer 1

 String mLoadURL="http://www.google.com";
 
 public class LoadHtml extends AsyncTask<String, String, String> {

        @Override
        protected String doInBackground(String... params) {
            URL url = null;
            try {
                url = new URL(mLoadURL);
                StringBuilder stringBuilder = new StringBuilder();
                URLConnection conn = url.openConnection();
                // Get the response
                BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
                String line = "";
                while ((line = rd.readLine()) != null) {
                    stringBuilder.append(line);
                }
                return stringBuilder.toString();
            } catch (MalformedURLException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return "";
        }

        @Override
        protected void onPostExecute(String s) {
            super.onPostExecute(s);
             if (!s.trim().isEmpty()) {
               //load html to webview
             }
        }
    }

使用以下方法调用 AsyncTask 之上：

LoadHtml loadHtml= new LoadHtml();
load.execute();