# 导报
import tornado.web
import tornado.ioloop
import json

# 创建类试图
class HelloHandler(tornado.web.RequestHandler):
    async def get(self):
        self.finish(json.dumps({"msg": "你好世界"},ensure_ascii=False))


# 创建实例
app = tornado.web.Application(handlers=[(r'/',HelloHandler)],debug=True)


# 启动服务
if __name__ == "__main__":
    print('服务正常启动')
    app.listen(5000)
    tornado.ioloop.IOLoop.instance().start()