blocks|key|910892|text|您可以挂接与任意表达式匹配的自定义转换器：Custom+Converter|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|910893|from+random+import+randrange
from+werkzeug.routing+import+Rule,+Map,+BaseConverter,+ValidationError

class+BooleanConverter(BaseConverter):

++++def+__init__(self,+url_map,+randomify=False):
++++++++super(BooleanConverter,+self).__init__(url_map)
++++++++self.randomify+=+randomify
++++++++self.regex+=+'(?:yes%7Cno%7Cmaybe)'

++++def+to_python(self,+value):
++++++++if+value+==+'maybe':
++++++++++++if+self.randomify:
++++++++++++++++return+not+randrange(2)
++++++++++++raise+ValidationError()
++++++++return+value+==+'yes'

++++def+to_url(self,+value):
++++++++return+value+and+'yes'+or+'no'

url_map+=+Map([
++++Rule('/vote/<bool:werkzeug_rocks>',+endpoint='vote'),
++++Rule('/vote/<bool(randomify=True):foo>',+endpoint='foo')
],+converters={'bool':+BooleanConverter})|code-block|syntax|javascript|910894|entityMap|0|LINK|mutability|MUTABLE|url|http://werkzeug.pocoo.org/docs/routing/#custom-converters^0|L|G|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@$A|R|B|S|1|T]]|C|$]]|$1|D|3|E|5|F|7|U|8|@]|9|@]|C|$G|H]]|$1|I|3|-4|5|6|7|V|8|@]|9|@]|C|$]]]|J|$K|$5|L|M|N|C|$O|P]]]]

You can hook in custom converters that match for arbitrary expressions: <a href="http://werkzeug.pocoo.org/docs/routing/#custom-converters">Custom Converter</a>

<pre><code>from random import randrange
from werkzeug.routing import Rule, Map, BaseConverter, ValidationError

class BooleanConverter(BaseConverter):

 def __init__(self, url_map, randomify=False):
 super(BooleanConverter, self).__init__(url_map)
 self.randomify = randomify
 self.regex = '(?:yes|no|maybe)'

 def to_python(self, value):
 if value == 'maybe':
 if self.randomify:
 return not randrange(2)
 raise ValidationError()
 return value == 'yes'

 def to_url(self, value):
 return value and 'yes' or 'no'

url_map = Map([
 Rule('/vote/&lt;bool:werkzeug_rocks&gt;', endpoint='vote'),
 Rule('/vote/&lt;bool(randomify=True):foo&gt;', endpoint='foo')
], converters={'bool': BooleanConverter})
</code></pre>

blocks|key|694875|text|尽管Armin用一个公认的答案比我先了一步，但我认为我应该展示一个简短的示例，说明我如何在Flask中实现正则表达式匹配器，以防有人想知道如何实现它。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|694876|from+flask+import+Flask
from+werkzeug.routing+import+BaseConverter

app+=+Flask(__name__)

class+RegexConverter(BaseConverter):
++++def+__init__(self,+url_map,+*items):
++++++++super(RegexConverter,+self).__init__(url_map)
++++++++self.regex+=+items[0]


app.url_map.converters['regex']+=+RegexConverter

@app.route('/<regex("[abcABC0-9]{4,6}"):uid>-<slug>/')
def+example(uid,+slug):
++++return+"uid:+%25s,+slug:+%25s"+%25+(uid,+slug)


if+__name__+==+'__main__':
++++app.run(debug=True,+host='0.0.0.0',+port=5000)|code-block|syntax|javascript|694877|此URL应返回200：http://localhost:5000/abc0-foo/|offset|length|694878|此URL应返回404：http://localhost:5000/abcd-foo/|694879|entityMap|0|LINK|mutability|MUTABLE|url|http://localhost:5000/abc0-foo/|1|http://localhost:5000/abcd-foo/^0|0|0|B|V|0|0|B|V|1|0^^$0|@$1|2|3|4|5|6|7|W|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Y|8|@]|9|@$I|Z|J|10|1|11]]|A|$]]|$1|K|3|L|5|6|7|12|8|@]|9|@$I|13|J|14|1|15]]|A|$]]|$1|M|3|-4|5|6|7|16|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T]]|U|$5|P|Q|R|A|$S|V]]]]

Even though Armin beat me to the punch with an accepted answer I thought I'd show an abbreviated example of how I implemented a regex matcher in Flask just in case anyone wants a working example of how this could be done.

<pre><code>from flask import Flask
from werkzeug.routing import BaseConverter

app = Flask(__name__)

class RegexConverter(BaseConverter):
 def __init__(self, url_map, *items):
 super(RegexConverter, self).__init__(url_map)
 self.regex = items[0]


app.url_map.converters['regex'] = RegexConverter

@app.route('/&lt;regex("[abcABC0-9]{4,6}"):uid&gt;-&lt;slug&gt;/')
def example(uid, slug):
 return "uid: %s, slug: %s" % (uid, slug)


if __name__ == '__main__':
 app.run(debug=True, host='0.0.0.0', port=5000)
</code></pre>

this URL should return with 200: <a href="http://localhost:5000/abc0-foo/" rel="noreferrer">http://localhost:5000/abc0-foo/</a>

this URL should will return with 404: <a href="http://localhost:5000/abcd-foo/" rel="noreferrer">http://localhost:5000/abcd-foo/</a>

blocks|key|910991|text|您还可以编写一个catch+all类型的路由，并在该方法中执行复杂的路由：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|910992|from+flask+import+Flask
app+=+Flask(__name__)

@app.route('/',+methods=['GET',+'POST'],+defaults={'path':+''})
@app.route('/<path:path>',+methods=['GET',+'POST'])
def+catch_all(path):
++++return+'You+want+path:+%25s'+%25+path

if+__name__+==+'__main__':
++++app.run()|code-block|syntax|javascript|910993|这将匹配任何请求。更多细节请看这里：Catch-All+URL。|offset|length|910994|entityMap|0|LINK|mutability|MUTABLE|url|https://flask.palletsprojects.com/en/2.0.x/patterns/singlepageapplications/^0|0|0|I|D|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

You could also write a catch all type of route and do complex routing within the method:
<pre><code>from flask import Flask
app = Flask(__name__)

@app.route('/', methods=['GET', 'POST'], defaults={'path': ''})
@app.route('/&lt;path:path&gt;', methods=['GET', 'POST'])
def catch_all(path):
 return 'You want path: %s' % path

if __name__ == '__main__':
 app.run()
</code></pre>
This will match any request. See more details here: <a href="https://flask.palletsprojects.com/en/2.0.x/patterns/singlepageapplications/" rel="nofollow noreferrer">Catch-All URL</a>.

I understand that Flask has the int, float and path converters, but the application we're developing has more complex patterns in its URLs.

Is there a way we can use regular expressions, as in Django?

Does Flask support regular expressions in its URL routing?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我知道Flask有int、float和path转换器，但我们正在开发的应用程序的URL中有更复杂的模式。有没有办法可以像Django那样使用正则表达式？

问Flask在其URL路由中是否支持正则表达式？
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问Flask在其URL路由中是否支持正则表达式？
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