Question

我最近更改了URL的格式，以提高可读性和SEO。但是，这会破坏我当前的URL。所以我想将它们重定向到烧瓶中。

我的问题与这里的问题类似： Redirecting an old URL to a new one with Flask micro-framework

但是，提供的答案给出了这一点：

redirect_urls = {
    '/article/old-url': '/article/new-url/id',
    '/article/old-url-2': '/article/new-url-2/id',
    '/article/old-url-3': '/article/new-url-3/id',
    ...
}

def redirect_url():
    return redirect(redirect_urls[request.url], 301)

for url in redirect_urls:
    app.add_url_rule(url, url, redirect_url)

问题是，该代码给出了500个错误代码。

KeyError：'/ article / old-url'

编辑：

完整回溯错误：

Exception on /article/old-url [GET]
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/flask/app.py", line 1988, in wsgi_app
    response = self.full_dispatch_request()
  File "/usr/local/lib/python3.4/dist-packages/flask/app.py", line 1641, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/usr/local/lib/python3.4/dist-packages/flask/app.py", line 1544, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/usr/local/lib/python3.4/dist-packages/flask/_compat.py", line 33, in reraise
    raise value
  File "/usr/local/lib/python3.4/dist-packages/flask/app.py", line 1639, in full_dispatch_request
    rv = self.dispatch_request()
  File "/usr/local/lib/python3.4/dist-packages/flask/app.py", line 1625, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/*****/mysite/flask_app.py", line 77, in redirect_url
    return redirect(redirect_urls[request.url], 301)
KeyError: 'https://www.example.com/article/old-url'

Answer 1

所以，看起来像这个问题，

  File "/home/*****/mysite/flask_app.py", line 77, in redirect_url
    return redirect(redirect_urls[request.url], 301)
KeyError: 'https://www.example.com/article/old-url'

是由于以下字典引起的

redirect_urls = {
    '/article/old-url': '/article/new-url/id',
    '/article/old-url-2': '/article/new-url-2/id',
    '/article/old-url-3': '/article/new-url-3/id',
    ...
}

只有子路径。

要解决此问题，您可以采用的一种方法是

BASE_URL = 'https://www.example.com'
return redirect(redirect_urls[request.url.replace(BASE_URL, '')], 301)

这将最终执行字典redirect_urls中的以下操作。

return redirect(redirect_urls['/article/old-url'], 301)

Answer 2

如上面Klaus所写，只需将@route装饰器添加到您的方法中，例如：

@app.route('/article/old-url', methods=['GET'])
def redirect_url():
    return redirect(redirect_urls[request.url], 301)

301使用Flask将旧的URL重定向到新的URL

2 个答案: