if self.reuqest.headers.get("Content-Type", "").startswith("application/json"):
try:
  # 防止请求头内容是application/json，实际内容不是json数据
  body_dict = json.loads(self.request.body)
except Exception as e:
  logger({"message": e})
    body_dict = dict()

...
def get(self, subject, city):
 
...
(r"/subject/(.+)/(.+)", SubjectCityHandler),
...

...
def get(self, city, date):
 
...
(r"/subject/(", SubjectCityHandler),
...

import tornado.web
import tornado.ioloop
import tornado.httpserver
import tornado.options # 新导入的options模块
 
tornado.options.define("port", default=8000, type=int, help="服务器监听端口号")
tornado.options.define("content", default=[], type=str, multiple=True, help="控制台输出内容")
 
class IndexHandler(tornado.web.RequestHandler):
  """主路由处理类"""
  def get(self):
    self.write("Hello World!")
    self.write("\n-------method:\n")
    self.write(self.request.method)
    self.write("\n-------uri:\n")
    self.write(self.request.uri)
    self.write("\n-------path:\n")
    self.write(self.request.path)
    self.write("\n-------query:\n")
    self.write(self.request.query)
    self.write("\n-------version:\n")
    self.write(self.request.version)
    self.write("\n-------headers['Accept-Language']:\n")
    self.write(self.request.headers["Accept-Language"])
    self.write("\n-------body:\n")
    self.write(self.request.body)
    self.write("\n-------remote_ip:\n")
    self.write(self.request.remote_ip)
    self.write("\n-------protocol:\n")
    self.write(self.request.protocol)
    self.write("\n-------host:\n")
    self.write(self.request.host)
    self.write("\n-------arguments:\n")
    self.write(self.request.arguments)
    self.write("\n-------query_arguments:\n")
    self.write(self.request.query_arguments)
    self.write("\n-------body_arguments:\n")
    self.write(self.request.body_arguments)
    self.write("\n-------files:\n")
    self.write(self.request.files)
    self.write("\n-------cookies:\n")
    self.write(self.request.cookies)
    self.write("\n")
 
  #自定义settings
settings = {
  "template_path":"templates",
  "static_path":"statics",
}
 
if __name__ == "__main__":
  tornado.options.parse_config_file("./config")
  print(tornado.options.options.content) # 控制台输出内容
 
  app = tornado.web.Application([
    (r"/", IndexHandler),
  ],debug=True,**settings)
 
  http_server = tornado.httpserver.HTTPServer(app)
  http_server.listen(tornado.options.options.port)