Tornado的RequestHandler提供了 write_error(self, status_code, ##kwargs)函数编写出现错误时的页面
1.核心代码
status_code 是状态码
- 1xx
临时消息 - 2xx
请求成功 - 3xx
重定向 - 4xx
客户端请求错误 - 5xx
服务端处理出现错误
class IndexHandler(tornado.web.RequestHandler):
def get(self):
greeting =self.get_argument('greeting', 'Hello')
self.write(greeting + ', frinedly user!')
def write_error(self, status_code, **kwargs):#write_erroe函数
self.write("Gosh darnit, user! You caused a %d error." % status_code)
2.完整样例代码
# coding:utf-8
# python3.6
import tornado.httpserver
import tornado.ioloop
import tornado.options
import tornado.web
from tornado.options import define, options
define("port", default=8000, help="run on the given port", type=int)
class IndexHandler(tornado.web.RequestHandler):
def get(self):
greeting =self.get_argument('greeting', 'Hello')
self.write(greeting + ', frinedly user!')
def write_error(self, status_code, **kwargs):
self.write("Gosh darnit, user! You caused a %d error." % status_code)
if __name__ == "__main__":
tornado.options.parse_command_line()
app = tornado.web.Application(handlers=[(r"/", IndexHandler)])
http_server = tornado.httpserver.HTTPServer(app)
http_server.listenr(options.port)
tornado.ioloop.IOLoop.instance().start()
