java - 从 Android 应用程序登录使用 HTTP 基本身份验证的网站

Question

我已经搜索了很多方法来做到这一点，但我找不到任何可行的方法。

我想登录此网站: http://www.besselgymnasium.de/fileadmin/Vertretung/Vertretungsplan_Schueler/subst_001.htm它使用 HTTP 基本身份验证使用我的 Android 应用程序来读出源代码，但我不知道如何让我的应用程序自动登录。

有人可以告诉我如何实现这一目标吗？

我尝试的最后一件事是:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    quellcode = (TextView) findViewById(com.example.MainActivity.R.id.TextView01);
    geschichte = (TextView) findViewById(com.example.MainActivity.R.id.geschichte);
    datum1 = (TextView) findViewById(com.example.MainActivity.R.id.datum1);
    datum1.setText("25.03.2014");
    readWebpage(quellcode);

}


@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    //getMenuInflater().inflate(R.menu.main, menu);
    return true;
}
private class DownloadWebPageTask extends AsyncTask<String, Void, String> {

    @Override
    protected String doInBackground(String... urls) {
        String credentials = "username" + ":" + "password";
        Base64.encodeToString(credentials.getBytes(), Base64.DEFAULT);





        String response = "";
        for (String url : urls) {
            DefaultHttpClient client = new DefaultHttpClient();

            HttpGet httpGet = new HttpGet(url);
            httpGet.setHeader("Authorization", "Basic "+credentials);
            try {
                HttpResponse execute = client.execute(httpGet);
                InputStream content = execute.getEntity().getContent();

                BufferedReader buffer = new BufferedReader(new InputStreamReader(content));
                String s = "";
                while ((s = buffer.readLine()) != null) {
                    response += s;
                }

            } catch (Exception e) {
                e.printStackTrace();
            }
        }
        return response;

    }
    //END OF READING

    @Override
    protected void onPostExecute(String result) {
        quellcode.setText(result);


    }
}


public void readWebpage(View view) {
    DownloadWebPageTask task = new DownloadWebPageTask();
    task.execute(new String[]{"http://username:password@www.besselgymnasium.de/fileadmin/Vertretung/Vertretungsplan_Schueler/subst_001.htm"});

}

}

Answer 1

要访问该网站，您必须添加授权 header 。

首先，您必须使用 Base64 连接并编码您的凭据:

string credentials = username + ":" + password;
string credBase64 = Base64.encodeToString(credentials.getBytes(), Base64.DEFAULT).replace("\n", "");

然后将此 header 添加到您的 httpClient:

httpGet.setHeader("Authorization", "Basic "+credBase64);

如果您需要更多帮助，请随时询问。