{"ret":1,"start":-1,"end":-1,"country":"\u4e2d\u56fd","province":"\u5317\u4eac","city":"\u5317\u4eac","district":"","isp":"","type":"","desc":""}
class IndexHandler(tornado.web.RequestHandler):
@tornado.web.asynchronous # 不关闭连接,也不发送响应
def get(self):
http = tornado.httpclient.AsyncHTTPClient()
http.fetch("http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip=14.130.112.24",
callback=self.on_response)
def on_response(self, response):
if response.error:
self.send_error(500)
else:
data = json.loads(response.body)
if 1 == data["ret"]:
self.write(u"国家:%s 省份: %s 城市: %s" % (data["country"], data["province"], data["city"]))
else:
self.write("查询IP信息错误")
self.finish() # 发送响应信息,结束请求处理
class IndexHandler(tornado.web.RequestHandler):
@tornado.gen.coroutine
def get(self):
http = tornado.httpclient.AsyncHTTPClient()
response = yield http.fetch("http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip=14.130.112.24")
if response.error:
self.send_error(500)
else:
data = json.loads(response.body)
if 1 == data["ret"]:
self.write(u"国家:%s 省份: %s 城市: %s" % (data["country"], data["province"], data["city"]))
else:
self.write("查询IP信息错误")
也可以将异步Web请求单独出来:
class IndexHandler(tornado.web.RequestHandler):
@tornado.gen.coroutine
def get(self):
rep = yield self.get_ip_info("14.130.112.24")
if 1 == rep["ret"]:
self.write(u"国家:%s 省份: %s 城市: %s" % (rep["country"], rep["province"], rep["city"]))
else:
self.write("查询IP信息错误")
@tornado.gen.coroutine
def get_ip_info(self, ip):
http = tornado.httpclient.AsyncHTTPClient()
response = yield http.fetch("http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip=" + ip)
if response.error:
rep = {"ret:0"}
else:
rep = json.loads(response.body)
raise tornado.gen.Return(rep) # 此处需要注意
class IndexHandler(tornado.web.RequestHandler):
@tornado.gen.coroutine
def get(self):
ips = ["14.130.112.24",
"15.130.112.24",
"16.130.112.24",
"17.130.112.24"]
rep1, rep2 = yield [self.get_ip_info(ips[0]), self.get_ip_info(ips[1])]
rep34_dict = yield dict(rep3=self.get_ip_info(ips[2]), rep4=self.get_ip_info(ips[3]))
self.write_response(ips[0], rep1)
self.write_response(ips[1], rep2)
self.write_response(ips[2], rep34_dict['rep3'])
self.write_response(ips[3], rep34_dict['rep4'])
def write_response(self, ip, response):
self.write(ip)
self.write(":<br/>")
if 1 == response["ret"]:
self.write(u"国家:%s 省份: %s 城市: %s<br/>" % (response["country"], response["province"], response["city"]))
else:
self.write("查询IP信息错误<br/>")
@tornado.gen.coroutine
def get_ip_info(self, ip):
http = tornado.httpclient.AsyncHTTPClient()
response = yield http.fetch("http://int.dpool.sina.com.cn/iplookup/iplookup.php?format=json&ip=" + ip)
if response.error:
rep = {"ret:1"}
else:
rep = json.loads(response.body)
raise tornado.gen.Return(rep)
# coding:utf-8
import tornado.web
import tornado.ioloop
import tornado.httpserver
import tornado.options
import os
import datetime
from tornado.web import RequestHandler
from tornado.options import define, options
from tornado.websocket import WebSocketHandler
define("port", default=8000, type=int)
class IndexHandler(RequestHandler):
def get(self):
self.render("index.html")
class ChatHandler(WebSocketHandler):
users = set() # 用来存放在线用户的容器
def open(self):
self.users.add(self) # 建立连接后添加用户到容器中
for u in self.users: # 向已在线用户发送消息
u.write_message(u"[%s]-[%s]-进入聊天室" % (self.request.remote_ip, datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")))
def on_message(self, message):
for u in self.users: # 向在线用户广播消息
u.write_message(u"[%s]-[%s]-说:%s" % (self.request.remote_ip, datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S"), message))
def on_close(self):
self.users.remove(self) # 用户关闭连接后从容器中移除用户
for u in self.users:
u.write_message(u"[%s]-[%s]-离开聊天室" % (self.request.remote_ip, datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")))
def check_origin(self, origin):
return True # 允许WebSocket的跨域请求
if __name__ == '__main__':
tornado.options.parse_command_line()
app = tornado.web.Application([
(r"/", IndexHandler),
(r"/chat", ChatHandler),
],
static_path = os.path.join(os.path.dirname(__file__), "static"),
template_path = os.path.join(os.path.dirname(__file__), "template"),
debug = True
)
http_server = tornado.httpserver.HTTPServer(app)
http_server.listen(options.port)
tornado.ioloop.IOLoop.current().start()