python为tornado添加recaptcha验证码功能

2019-11-25 18:30:14

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    from urllib.request import urlopen
    from urllib.parse import urlencode
    import tornado.httpserver
    import tornado.ioloop
    import tornado.web

    
    #获取key: https://www.google.com/recaptcha/whyrecaptcha
    publickey = '填入你的 public key'
    privatekey = '填入你的 private key'

    
    class Application(tornado.web.Application):
        def __init__(self):
            handlers = [
                (r'/', IndexHandler)
            ]
            settings = dict(
                template_path="templates",
            )

            tornado.web.Application.__init__(self, handlers, **settings)

    
    class IndexHandler(tornado.web.RequestHandler):
        def get(self):
            self.render('index.html', publickey=publickey)

        def post(self):
            url = 'http://www.google.com/recaptcha/api/verify'

            #验证码
            challenge = self.get_argument('recaptcha_challenge_field')
            #用户输入
            response = self.get_argument('recaptcha_response_field')

            data = {
                'privatekey': privatekey,
                'remoteip': self.request.remote_ip,
                'challenge': challenge,
                'response': response
            }

            res = urlopen(url, data=urlencode(data).encode())
            #获取验证结果，这里直接将返回结果输出到页面
            self.write(res.read().decode())

    
    if __name__ == '__main__':
        server = tornado.httpserver.HTTPServer(Application())
        server.listen(10001)
        tornado.ioloop.IOLoop.instance().start()
 

templates/index.html

复制代码代码如下:

   
VeVB.COm<!DOCTYPE html>
VeVB.COm<html>
VeVB.COm<head>
VeVB.COmVeVB.COm<title>reCaptcha验证码</title>
VeVB.COm</head>
VeVB.COm<body>
VeVB.COmVeVB.COm<form action="" method="post">
VeVB.COmVeVB.COm<script type="text/javascript" src="http://www.google.com/recaptcha/api/challenge?k={{ publickey }}"></script>
VeVB.COmVeVB.COm<noscript>
VeVB.COmVeVB.COmVeVB.COm<iframe src="http://www.google.com/recaptcha/api/noscript?k={{ publickey }}" height="300" width="500" frameborder="0"></iframe><br>
VeVB.COmVeVB.COmVeVB.COm<textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
VeVB.COmVeVB.COmVeVB.COm<input type="hidden" name="recaptcha_response_field" value="manual_challenge">
VeVB.COmVeVB.COm</noscript>
VeVB.COmVeVB.COm</form>
VeVB.COm</body>
VeVB.COm</html>

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