我已经从我的项目中提取了代码样本。它并不完美，但它提供了一个如何使用Tornadp的AsyncHTTPClient的方法@tornado.gen.engine
def async_request(self, callback, server_url, method=u'GET', body=None, **kwargs):
"""
Make async request to server
:param callback: callback to pass results
:param server_url: path to required API
:param method: HTTP method to use, default - GET
:param body: HTTP request body for POST request, default - None
:return: None
"""
args = {}
if kwargs:
args.update(kwargs)
url = '%s?%s' % (server_url, urlencode(args))
request = tornado.httpclient.HTTPRequest(url, method, body=body)
http = tornado.httpclient.AsyncHTTPClient()
response = yield tornado.gen.Task(http.fetch, request)
if response.error:
logging.warning("Error response %s fetching %s", response.error, response.request.url)
callback(None)
return
data = tornado.escape.json_decode(response.body) if response else None
callback(data)
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