Question

我正在尝试检查用户和密码是否正确。我正在使用API，这是我的代码：

 String username = user.getText().toString(), password = pass.getText().toString();

      String URL = "MyUrl";
      String authData = "Basic " + Base64.encodeToString((username + ":" + password).getBytes(), Base64.NO_WRAP);
      HttpClient httpclient = new DefaultHttpClient();
      HttpGet httpget = new HttpGet(URL);
      httpget.setHeader("Authorization", authData); 
      HttpResponse response = null;
        try {
            response = httpclient.execute(httpget);
            HttpEntity entity = response.getEntity();

            if (entity != null) {
                String s = EntityUtils.toString(entity);
                Toast.makeText(getBaseContext(), s, Toast.LENGTH_SHORT).show();
                Intent i = new Intent(Login.this,DriverLogin.class);
                startActivity(i);
                finish();
            }
            else
                Toast.makeText(getBaseContext(), "Fail", Toast.LENGTH_SHORT).show(); 

        } catch (Exception e) {
            // Auto-generated catch block
            e.printStackTrace();
        }
        finally {
        }

如果用户名和密码正确，我没有问题。我的问题是用户输入了错误的登录凭据。我有一行检查实体是否为空。正如我所观察到的，无论登录凭据是对还是错，它都处于这种状态。如果正确，它会显示我需要的详细信息。如果错误，则会显示一条消息，指出详细信息未经授权。我想抓住该消息，以便说登录凭据是错误的。我认为如果细节错误，实体将为空。有任何想法吗？谢谢！

Answer 1

您可以针对status code查看HttpResponse的error 401：

if(response.getStatusLine() != null &&
   response.getStatusLine().getStatusCode() == 401) {
    // authentication is required and has failed or has not yet been provided
}

检查http上的授权访问是否获得响应

1 个答案: