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get_argument(name, default=_ARG_DEFAULT, strip=True) 功能:从请求体和查询字符串中返回指定参数name的值,如果出现多个同名 参数,则返回最后⼀个的值。 get_arguments(name, strip=True) 功能:从请求体和查询字符串中返回指定参数name的值,注意返回的是list列 表(即使对应name参数只有⼀个值)。若未找到name参数,则返回空列表 []。
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import tornado.web import tornado.ioloop import tornado.httpserver import tornado.options from tornado.options import options, define from tornado.web import RequestHandler, MissingArgumentError define("port", default=8000, type=int, help="run server on the given port.") class IndexHandler(RequestHandler): def post(self): query_arg = self.get_query_argument("a") query_args = self.get_query_arguments("a") body_arg = self.get_body_argument("a") body_args = self.get_body_arguments("a", strip=False) arg = self.get_argument("a") args = self.get_arguments("a") default_arg = self.get_argument("b", "itcast") default_args = self.get_arguments("b") try: missing_arg = self.get_argument("c") except MissingArgumentError as e: missing_arg = "We catched the MissingArgumentError!" print e missing_args = self.get_arguments("c") rep = "query_arg:%s<br/>" % query_arg rep += "query_args:%s<br/>" % query_args rep += "body_arg:%s<br/>" % body_arg rep += "body_args:%s<br/>" % body_args rep += "arg:%s<br/>" % arg rep += "args:%s<br/>" % args rep += "default_arg:%s<br/>" % default_arg rep += "default_args:%s<br/>" % default_args rep += "missing_arg:%s<br/>" % missing_arg rep += "missing_args:%s<br/>" % missing_args self.write(rep) if __name__ == "__main__": tornado.options.parse_command_line() app = tornado.web.Application([ (r"/", IndexHandler), ]) http_server = tornado.httpserver.HTTPServer(app) http_server.listen(options.port) tornado.ioloop.IOLoop.current().start()
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