manage.py

from tornado.ioloop import IOLoop  # 处理I/Ofrom tornado.web import RequestHandler  # 处理请求from tornado.web import Application  # 实例化APP网页USER_DICT = {    '1': {'name': '金超', 'age': '22'},    '2': {'name': '小可', 'age': '42'},    '3': {'name': '小鱼', 'age': '32'},    '4': {'name': '小狗', 'age': '52'},}# 中间件用于验证是否登录class AuthHandler(object):    def prepare(self):        # name = self.get_cookie('xxxxx')  #与Django方法做对比        name = self.get_secure_cookie('xxxxx')        if not name:            self.redirect('/login')# home页面  要先继承AuthHandlerclass HomeHandler(AuthHandler, RequestHandler):    def get(self, *args, **kwargs):        self.render('index.html', user_dict=USER_DICT, num=[11, 22, 33])# index主页面class IndexHandler(AuthHandler, RequestHandler):    def get(self, *args, **kwargs):        # 用user_dict带入参数传给页面        self.render('index.html', user_dict=USER_DICT, num=[11, 22, 33])# login登录页面函数class LoginHandler(RequestHandler):    def get(self, *args, **kwargs):        self.render('login.html', error='')    def post(self, *args, **kwargs):        # Tornado和Django做类比        # self.get_query_argument('user')         request.GET.get('user')        # self.get_query_arguments('user')        request.GET.getlist('user')        # self.get_body_argument('user')          request.POST.get('user')        # self.get_body_arguments('user')         request.POST.getlist('user')        user = self.get_body_argument('user')        pwd = self.get_body_argument('pwd')        if user == 'alex' and pwd == '123':            self.set_secure_cookie('xxxxx', user)            self.redirect('/index')            return        self.render('login.html', error='用户名或密码错误')# 在settings中注册templates和中间件cookiesettings = {    'template_path': 'templates',    'cookie_secret': 'asq3wurasldf'}# 在Application()方法里面写页面对应着函数application = Application([    ('/login', LoginHandler),    ('/index', IndexHandler),    ('/home', HomeHandler),], **settings)# listen()方法可以监控端口和IP默认是本机if __name__ == '__main__':    application.listen(8888)    IOLoop.instance().start()

　　index.html

    
         
用户列表
     
        {% for k,v in user_dict.items() %}            
        {% end %}    
          
               
        
ID
                
姓名
                
年龄
           
      
          
                      
                        
{
    {k}}
                        
{
    {v['name']}}
                        
{
    {v.get('age')}}
                   
      
     
     
    
          {% for item in num %}        
      
{
    {item}}
    {% end %}
     
{
    {num[1]}}

　　login.html

    
             
     
        
              
              
              
      
       {
    {error}}