java - 如何在 Android 中提取 HTTPPost 后的 URL

Question

我正在为这个我似乎无法弄清楚的问题而挠头。我要做的是提取 HTTPpost 之后的 URL。这将允许我完成 Oauth 过程。

目前我正在将整个网站提取到我的实体中。

例如:数据将发布到https://mysite.com/login并将在帖子后重定向到 https://mysite.com/dashboard?code=3593085390859082093720

如何提取url？

如果您需要更多信息或可以指导我正确的方向，我们将不胜感激!谢谢!

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

public class LoginActivity extends Activity implements OnClickListener {

Button ok,back,exit;
TextView result;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.login);

    // Login button clicked
    ok = (Button)findViewById(R.id.submit);
    ok.setOnClickListener(this);

    result = (TextView)findViewById(R.id.result);

}

public void postLoginData() {
    // Create a new HttpClient and Post Header
    HttpClient httpclient = new DefaultHttpClient();

    HttpPost httppost = new HttpPost("https://mysite.com/login");

    try {
        // Add user name and password
     EditText uname = (EditText)findViewById(R.id.username);
     String username = uname.getText().toString();

     EditText pword = (EditText)findViewById(R.id.password);
     String password = pword.getText().toString();

        List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(2);
        nameValuePairs.add(new BasicNameValuePair("pseudonym_session[unique_id]", username));
        nameValuePairs.add(new BasicNameValuePair("pseudonym_session[password]", password));
        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));

        // Execute HTTP Post Request
        Log.w("CANVAS", "Execute HTTP Post Request");
        HttpResponse response = httpclient.execute(httppost);

        String str = inputStreamToString(response.getEntity().getContent()).toString();
        Log.w("CANVAS", str);

        ResponseHandler<String> responseHandler = new BasicResponseHandler(); 
        String ResponseBody = httpclient.execute(httppost, responseHandler);

        Intent intent = new Intent(getBaseContext(), DashboardActivity.class);
        startActivity(intent);

        if(str.toString().equalsIgnoreCase("true"))
        {
         Log.w("CANVAS", "TRUE");
         result.setText("Login successful");   
        }else
        {
         Log.w("CANVAS", "FALSE");
         result.setText(ResponseBody); 
        }

    } catch (ClientProtocolException e) {
     e.printStackTrace();
    } catch (IOException e) {
     e.printStackTrace();
    }
} 

private StringBuilder inputStreamToString(InputStream is) {
 String line = "";
 StringBuilder total = new StringBuilder();
 // Wrap a BufferedReader around the InputStream
 BufferedReader rd = new BufferedReader(new InputStreamReader(is));
 // Read response until the end
 try {
  while ((line = rd.readLine()) != null) { 
    total.append(line); 
  }
 } catch (IOException e) {
  e.printStackTrace();
 }
 // Return full string
 return total;
}

@Override
public void onClick(View view) {
  if(view == ok){
    postLoginData();
  }
}

}

Answer 1

如果您设置了重定向处理程序，您可以从响应中返回服务器将您发送到的位置。这是我刚刚玩过的一段代码……(我应该指出，如果你不设置重定向处理程序，你只会被重定向到最终目的地，这可能是登录屏幕本身)

DefaultHttpClient htc = getHttpClient();
htc.setRedirectHandler(new RedirectHandler() {
  @Override
  public boolean isRedirectRequested(HttpResponse response, HttpContext context)
  {
    Log.d(TAG, "isRedirectRequested, response: " + response.toString());
    return false;
  }

  @Override
  public URI getLocationURI(HttpResponse response, HttpContext context)
      throws ProtocolException
  {
    Log.d(TAG, "getLocationURI, response: " + response.toString());
    return null;
  }
});
HttpResponse resp = null;
StringBuilder out = new StringBuilder();
try
{
  HttpGet get = new HttpGet(spec);
  resp = htc.execute(get);
  for (Header hdr : resp.getAllHeaders())
    Log.d(TAG, "header " + hdr.getName() + " -> " + hdr.getValue());
  ...
}
catch (Exception e)
{
  Log.e(TAG, "Error connecting to " + spec, e);
  return null;
}