Question

我一直在浏览Python Requests文档，但我看不到任何我想要实现的功能。

在我的脚本中，我正在设置allow_redirects=True。

我想知道该页面是否已重定向到其他内容，新网址是什么。

例如，如果起始网址为：www.google.com/redirect

最终网址为www.google.co.uk/redirected

如何获取该网址？

Answer 1

您正在寻找request history。

response.history属性是导致最终网址的响应列表，可在response.url中找到。

response = requests.get(someurl)
if response.history:
    print "Request was redirected"
    for resp in response.history:
        print resp.status_code, resp.url
    print "Final destination:"
    print response.status_code, response.url
else:
    print "Request was not redirected"

演示：

>>> import requests
>>> response = requests.get('http://httpbin.org/redirect/3')
>>> response.history
(<Response [302]>, <Response [302]>, <Response [302]>)
>>> for resp in response.history:
...     print resp.status_code, resp.url
... 
302 http://httpbin.org/redirect/3
302 http://httpbin.org/redirect/2
302 http://httpbin.org/redirect/1
>>> print response.status_code, response.url
200 http://httpbin.org/get

Answer 2

这回答了一个稍微不同的问题，但由于我自己也陷入了困境，我希望它对其他人有用。

如果你想使用allow_redirects=False并直接获取第一个重定向对象，而不是跟随它们的链，并且你只想直接从302响应对象中获取重定向位置，那么{{ 1}}不会工作。相反，它是＆＃34;位置＆＃34;头：

r.url

Answer 3

文档有这个模糊http://docs.python-requests.org/en/latest/user/quickstart/#redirection-and-history

import requests

r = requests.get('http://www.github.com')
r.url
#returns https://www.github.com instead of the http page you asked for

Answer 4

我认为 requests.head 而非 requests.get 在处理网址重定向时会更安全，请检查github问题here：

    @Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.texture_video);

    textureView = (TextureView) findViewById(R.id.textureView);
    listView = (ListView) findViewById(R.id.list);

  .
  .
  .

    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
            android.R.layout.simple_list_item_1, android.R.id.text1, values);


    listView.setAdapter(adapter);
    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

        @Override
        public void onItemClick(AdapterView<?> parent, View view,
                                int position, long id) {

            if (position == 0) {
                onDestroy();
                FILE_NAME = "test1.mp4";
                textureView.setSurfaceTextureListener(VideoAssetActivity.this);
                onSurfaceTextureAvailable(textureView.getSurfaceTexture(), view.getWidth(), view.getHeight());
            } else if (position == 1) {
                onDestroy();
                FILE_NAME = "test2.mp4";
                textureView.setSurfaceTextureListener(VideoAssetActivity.this);
                onSurfaceTextureAvailable(textureView.getSurfaceTexture(), view.getWidth(), view.getHeight());
            } else if (position == 2) {
                onDestroy();
                FILE_NAME = "test3.mp4";
                textureView.setSurfaceTextureListener(VideoAssetActivity.this);
                onSurfaceTextureAvailable(textureView.getSurfaceTexture(), view.getWidth(), view.getHeight());
            } else if (position == 3) {
                onDestroy();
                FILE_NAME = "test4.mp4";
                textureView.setSurfaceTextureListener(VideoAssetActivity.this);
                onSurfaceTextureAvailable(textureView.getSurfaceTexture(), view.getWidth(), view.getHeight());
            }
        }

    });
    textureView.setSurfaceTextureListener(this);

}

@Override
protected void onDestroy() {
    super.onDestroy();
    if (mMediaPlayer != null) {
        mMediaPlayer.stop();
        mMediaPlayer.release();
        mMediaPlayer = null;
    }
}

@Override
public void onSurfaceTextureAvailable(SurfaceTexture surfaceTexture, int i, int i2) {
    Surface surface = new Surface(surfaceTexture);

    try {
        AssetFileDescriptor afd = getAssets().openFd(FILE_NAME);
        mMediaPlayer = new MediaPlayer();
        mMediaPlayer.setDataSource(afd.getFileDescriptor(), afd.getStartOffset(), afd.getLength());
        mMediaPlayer.setSurface(surface);
        mMediaPlayer.setLooping(true);
        mMediaPlayer.prepareAsync();

        onSurfaceTextureUpdated(surfaceTexture);

        mMediaPlayer.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            @Override
            public void onPrepared(MediaPlayer mediaPlayer) {
                // set up media controller
                videoController = new MediaController(VideoAssetActivity.this);
                videoController.setAnchorView(textureView);
                videoController.setPadding(0, 0, 0, 0);

                    mediaPlayer.start();

            }
        });

    } catch (IllegalArgumentException e) {
        Log.d(TAG, e.getMessage());
    } catch (SecurityException e) {
        Log.d(TAG, e.getMessage());
    } catch (IllegalStateException e) {
        Log.d(TAG, e.getMessage());
    } catch (IOException e) {
        Log.d(TAG, e.getMessage());
    }


}

Answer 5

对于python3.5，您可以使用以下代码：

import urllib.request
res = urllib.request.urlopen(starturl)
finalurl = res.geturl()
print(finalurl)

Python Requests库重定向新url

5 个答案: