web 框架3 tornado 分页 session 继承extend 包含include 路由系统的域名使用 钩子函数

1  路由系统正则匹配，浏览器输入数字

application = tornado.web.Application([
    (r"/index/(?P<page>\d*)",home.IndexHandler),

],**settings)

　　访问时候 地址最后要么是数字结尾要么是index/结尾， / 不要忘记　

　　127.0.0.1：（start.py内的port）/index/1  或者 127.0.0.1：（start.py内的port）/index/  因为后面有规则匹配

1.1 目录结构

#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'

import  tornado.ioloop
import tornado.web

from controller import home
settings = {
    "template_path" : "views",  # 模板路径的配置
    "static_path" : "statics",
}

#路由映射　　路由系统

application = tornado.web.Application([
    (r"/index/(?P<page>\d*)",home.IndexHandler),

],**settings)


if __name__ == '__main__':
    # socket 运行起来

    application.listen(8888)
    tornado.ioloop.IOLoop.instance().start()
start.py
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
</head>
<body>
    <div>首页</div>
    <h2>提交数据</h2>
    <form method="post" action="/index/{{all_ye}}">
        <input type="text" name="username">
        <input type="text" name="email">
        <input type="submit">

    </form>

    <h2>显示数据</h2>
    <table border="1px">
        <thead>
            <tr>
                <th>用户名</th>
                <th>邮箱地址</th>
            </tr>
        </thead>
        <tbody>
            {% for item in info_list %}
                <tr>
                    <td>{{ item["username"] }}</td>
                    <td>{{ item["email"] }}</td>
                </tr>
            {% end %}
        </tbody>
    </table>

    <div>
        <a>上一页</a>
        {% for i in all_page %}
            <a href="/index/{{ i }}">{{ i }}</a>
        {% end %}
        <a>下一页</a>
    </div>
</body>
</html>
home/index.html
#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'


#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'

import  tornado.ioloop
import tornado.web

INFO_LIST = [
    {"username":"alex","email":"alex3721@163.com"}
]

class IndexHandler(tornado.web.RequestHandler):

    def get(self, page):

        try:
            page = int(page)
        except Exception as e:
            page = 1
        if page < 1:
            page = 1

        all_num = INFO_LIST.__len__()
        x = divmod(all_num,5)
        all_page = x[0] if x[1] == 0 else x[0]+1
        print(all_page)
        all = []
        for i in range(all_page):
            all.append(i+1)
        print(all)
        start = (page - 1)*5
        end = page * 5

        CURRENT_LIST = INFO_LIST[start:end]
        print(CURRENT_LIST)
        self.render("home/index.html",info_list = CURRENT_LIST,all_page =all,all_ye=all_page)


    def post(self, page):

        username = self.get_argument("username",None)
        email = self.get_argument("email",None)
        temp = {"username":username,"email":email}
        INFO_LIST.append(temp)

        self.redirect("/index/"+page)
home.py
#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'


#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'

import  tornado.ioloop
import tornado.web

class RegisterHandler(tornado.web.RequestHandler):

    def get(self, *args, **kwargs):
        pass

class LogoutHandler(tornado.web.RequestHandler):

    def get(self, *args, **kwargs):
        pass


class LoginHandler(tornado.web.RequestHandler):

    def get(self, *args, **kwargs):
        pass
    def post(self, *args, **kwargs):
        pass
account.py

 

2  分页为整合前 目录结构和代码

访问地址 ：127.0.0.1：（start.py内的port）/index/1

#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'

import  tornado.ioloop
import tornado.web

from controller import home
settings = {
    "template_path" : "views",  # 模板路径的配置
    "static_path" : "statics",
}

#路由映射　　路由系统

application = tornado.web.Application([
    (r"/index/(?P<page>\d*)",home.IndexHandler),

],**settings)


if __name__ == '__main__':
    # socket 运行起来

    application.listen(8880)
    tornado.ioloop.IOLoop.instance().start()
start.py
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
    <style>
        .pager a{
            display: inline-block;
            padding: 5px;
            margin: 3px;
            background-color: #e0e0e0;
            border: 1px solid red;
            border-radius: 6px;
        }
        .pager a.active{
            background-color: red;
            color: white;
        }

    </style>
</head>
<body>
    <div>首页</div>
    <h2>提交数据</h2>
    <form method="post" action="/index/{{all_ye}}">
        <input type="text" name="username">
        <input type="text" name="email">
        <input type="submit">
    </form>

    <h2>显示数据</h2>
    <table border="1px">
        <thead>
            <tr>
                <th>用户名</th>
                <th>邮箱地址</th>
            </tr>
        </thead>
        <tbody>
            {% for item in info_list %}
                <tr>
                    <td>{{ item["username"] }}</td>
                    <td>{{ item["email"] }}</td>
                </tr>
            {% end %}
        </tbody>
    </table>

    <div class="pager">
            {% raw str_page %}
    </div>
</body>
</html>
home/index.html
#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'


#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'

import  tornado.ioloop
import tornado.web

INFO_LIST = [
    {"username":"alex","email":"alex3721@163.com"}
]

for i in range(300):
    temp = {"username":"alex"+str(i),"email":str(i)+"alex3721@163.com"}
    INFO_LIST.append(temp)

class IndexHandler(tornado.web.RequestHandler):

    def get(self, page):

        try:
            page = int(page)
        except Exception as e:
            page = 1
        if page < 1:
            page = 1


        start = (page - 1)*5
        end = page * 5

        CURRENT_LIST = INFO_LIST[start:end]
        print(CURRENT_LIST)

        all_pager,c = divmod(len(INFO_LIST),5)
        if c > 0:
            all_pager +=1

        list_page = []

        if all_pager < 11:
            s =1
            t = all_pager +1
        else:
            if page<6:
                s = 1
                t = 12
            else:
                if all_pager - page >5:
                    s = page -5
                    t = page +5
                else:
                    s = all_pager - 5
                    t = all_pager +1

        # 上一页
        if page == 1:
            prev = "<a href='javascript:void(0);'> 上一页</a>"
        else:
            prev = "<a href='/index/%s'> 上一页</a>" % (page -1)
        list_page.append(prev)

        for p in range(s,t):
            if p == page:
                temp = '<a class="active" href="/index/%s">%s</a>' %(p,p)
            else:
                temp = '<a href="/index/%s">%s</a>' % (p , p)

            list_page.append(temp)

        # 下一页
        if page == all_pager:
            nex = "<a href='javascript:void(0);'> 下一页</a>"
        else:
            nex = "<a href='/index/%s'>下一页</a>" % (page + 1)
        list_page.append(nex)


        str_page = "".join(list_page)

        self.render("home/index.html",info_list = CURRENT_LIST,all_page =all,str_page=str_page,all_ye=all_pager)


    def post(self, page):

        username = self.get_argument("username",None)
        email = self.get_argument("email",None)
        temp = {"username":username,"email":email}
        INFO_LIST.append(temp)

        self.redirect("/index/"+page)
home.py
#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'


#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'

import  tornado.ioloop
import tornado.web

class RegisterHandler(tornado.web.RequestHandler):

    def get(self, *args, **kwargs):
        pass

class LogoutHandler(tornado.web.RequestHandler):

    def get(self, *args, **kwargs):
        pass


class LoginHandler(tornado.web.RequestHandler):

    def get(self, *args, **kwargs):
        pass
    def post(self, *args, **kwargs):
        pass
account.py

 

2  分页为整合后 目录结构和代码  说明

访问地址 ：127.0.0.1：（start.py内的port）/index/1

 

 common 下的pager模块

#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'


class Pagenation:
    def __init__(self, current_page,all_item,base_url,per_items):
        """

        :param current_page:  当前页
        :param all_item:   所有数据总条数
        :param base_url:  提交url 例如 /index/
        :param per_items:  每页显示内容条数
        """
        try:
            page = int(current_page)
        except Exception as e:
            page = 1
        if page < 1:
            page = 1

        all_pager , c = divmod(all_item,per_items)
        if c >0:
            all_pager += 1

        self.current_page = page
        self.all_pager = all_pager
        self.base_url = base_url
        self.per_items = per_items

    @property
    def start(self):
        return (self.current_page -1 )* self.per_items

    @property
    def end(self):
        return self.current_page * self.per_items

    def string_pager(self):
        list_page = [ ]
        if self.all_pager <11:
            s = 1
            t = self.all_pager + 1
        else:
            if self.current_page < 6:
                s = 1
                t = 12;
            else:
                if (self.current_page + self.per_items ) <self.all_pager:
                    s = self.current_page - 5
                    t = self.current_page+5 + 1
                else:
                    s = self.all_pager - 10
                    t = self.all_pager +1

        # 首页
        first = "<a href='/index/1'>首页</a>"
        list_page.append(first)

        if self.current_page == 1:
            prev = "<a href='javascript:void(0);'> 上一页</a>"
        else:
            prev = "<a href='/index/%s'> 上一页</a>" % (self.current_page - 1)
        list_page.append(prev)

        for p in range(s, t):
            if p == self.current_page:
                temp = '<a class="active" href="/index/%s">%s</a>' % (p, p)
            else:
                temp = '<a href="/index/%s">%s</a>' % (p, p)

            list_page.append(temp)
        # 下一页
        if self.current_page == self.all_pager:
            nex = "<a href='javascript:void(0);'> 下一页</a>"
        else:
            nex = "<a href='/index/%s'>下一页</a>" % (self.current_page + 1)
        list_page.append(nex)

        # 尾页
        first = "<a href='/index/%s'>首页</a>" %  (self.all_pager)
        list_page.append(first)

        # 跳转
        jump = """<input type='text' /><a onclick="Jump('%s',this);">GO</a>""" % ('/index/')
        script = """<script>
            function Jump(baseUrl,ths){
                var val = ths.previousElementSibling.value;
                if(val.trim().length>0){
                    location.href = baseUrl + val;
                }
            }
            </script>"""
        list_page.append(jump)
        list_page.append(script)
        str_page = "".join(list_page)
        return str_page
公共模块 分页的pager.py

controller home文件的调用pager模块

from  commons import pager
# 写在前端的文涨以字典格式存放测试
INFO_LIST = [
    {"username":"alex","email":"alex3721@163.com"}
]
#创建３００条文章来进行测试分页
for i in range(300):
    temp = {"username":"alex"+str(i),"email":str(i)+"alex3721@163.com"}
    INFO_LIST.append(temp)

class IndexHandler(tornado.web.RequestHandler):

    def get(self, page):
        obj =  pager.Pagenation(page,len(INFO_LIST),"/index/",10)
        current_list = INFO_LIST[obj.start:obj.end]
        str_page = obj.string_pager()

        self.render("home/index.html",info_list = current_list,all_page =all,str_page=str_page,all_ye=obj.all_pager)

　

测试目录结构的所有代码　

 

#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'

import  tornado.ioloop
import tornado.web

from controller import home
settings = {
    "template_path" : "views",  # 模板路径的配置
    "static_path" : "statics",
}

#路由映射　　路由系统

application = tornado.web.Application([
    (r"/index/(?P<page>\d*)",home.IndexHandler),

],**settings)


if __name__ == '__main__':
    # socket 运行起来

    application.listen(8880)
    tornado.ioloop.IOLoop.instance().start()
start。py
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>首页</title>
    <style>
        .pager a{
            display: inline-block;
            padding: 5px;
            margin: 3px;
            background-color: #e0e0e0;
            border: 1px solid red;
            border-radius: 6px;
        }
        .pager a.active{
            background-color: red;
            color: white;
        }

    </style>
</head>
<body>
    <div>首页</div>
    <h2>提交数据</h2>
    <form method="post" action="/index/{{all_ye}}">
        <input type="text" name="username">
        <input type="text" name="email">
        <input type="submit">
    </form>

    <h2>显示数据</h2>
    <table border="1px">
        <thead>
            <tr>
                <th>用户名</th>
                <th>邮箱地址</th>
            </tr>
        </thead>
        <tbody>
            {% for item in info_list %}
                <tr>
                    <td>{{ item["username"] }}</td>
                    <td>{{ item["email"] }}</td>
                </tr>
            {% end %}
        </tbody>
    </table>

    <div class="pager">
            {% raw str_page %}
    </div>
</body>
</html>
home/index.html
#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'


#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'

import  tornado.ioloop
import tornado.web

class RegisterHandler(tornado.web.RequestHandler):

    def get(self, *args, **kwargs):
        pass

class LogoutHandler(tornado.web.RequestHandler):

    def get(self, *args, **kwargs):
        pass


class LoginHandler(tornado.web.RequestHandler):

    def get(self, *args, **kwargs):
        pass
    def post(self, *args, **kwargs):
        pass
account。py
#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'


#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'

import  tornado.ioloop
import tornado.web
from  commons import pager

INFO_LIST = [
    {"username":"alex","email":"alex3721@163.com"}
]

for i in range(300):
    temp = {"username":"alex"+str(i),"email":str(i)+"alex3721@163.com"}
    INFO_LIST.append(temp)

class IndexHandler(tornado.web.RequestHandler):

    def get(self, page):
        obj =  pager.Pagenation(page,len(INFO_LIST),"/index/",10)
        current_list = INFO_LIST[obj.start:obj.end]
        str_page = obj.string_pager()

        self.render("home/index.html",info_list = current_list,all_page =all,str_page=str_page,all_ye=obj.all_pager)


    def post(self, page):

        username = self.get_argument("username",None)
        email = self.get_argument("email",None)
        temp = {"username":username,"email":email}
        INFO_LIST.append(temp)

        self.redirect("/index/"+page)
home.py
#!/usr/bin/env python
# _*_ coding:utf-8 _*_
__author__ = 'liujianzuo'


class Pagenation:
    def __init__(self, current_page,all_item,base_url,per_items):
        """

        :param current_page:  当前页
        :param all_item:   所有数据总条数
        :param base_url:  提交url 例如 /index/
        :param per_items:  每页显示内容条数
        """
        try:
            page = int(current_page)
        except Exception as e:
            page = 1
        if page < 1:
            page = 1

        all_pager , c = divmod(all_item,per_items)
        if c >0:
            all_pager += 1

        self.current_page = page
        self.all_pager = all_pager
        self.base_url = base_url
        self.per_items = per_items

    @property
    def start(self):
        return (self.current_page -1 )* self.per_items

    @property
    def end(self):
        return self.current_page * self.per_items

    def string_pager(self):
        list_page = [ ]
        if self.all_pager <11:
            s = 1
            t = self.all_pager + 1
        else:
            if self.current_page < 6:
                s = 1
                t = 12;
            else:
                if (self.current_page + self.per_items ) <self.all_pager:
                    s = self.current_page - 5
                    t = self.current_page+5 + 1
                else:
                    s = self.all_pager - 10
                    t = self.all_pager +1

        # 首页
        first = "<a href='/index/1'>首页</a>"
        list_page.append(first)

        if self.current_page == 1:
            prev = "<a href='javascript:void(0);'> 上一页</a>"
        else:
            prev = "<a href='/index/%s'> 上一页</a>" % (self.current_page - 1)
        list_page.append(prev)

        for p in range(s, t):
            if p == self.current_page:
                temp = '<a class="active" href="/index/%s">%s</a>' % (p, p)
            else:
                temp = '<a href="/index/%s">%s</a>' % (p, p)

            list_page.append(temp)
        # 下一页
        if self.current_page == self.all_pager:
            nex = "<a href='javascript:void(0);'> 下一页</a>"
        else:
            nex = "<a href='/index/%s'>下一页</a>" % (self.current_page + 1)
        list_page.append(nex)

        # 尾页
        first = "<a href='/index/%s'>首页</a>" %  (self.all_pager)
        list_page.append(first)

        # 跳转
        jump = """<input type='text' /><a onclick="Jump('%s',this);">GO</a>""" % ('/index/')
        script = """<script>
            function Jump(baseUrl,ths){
                var val = ths.previousElementSibling.value;
                if(val.trim().length>0){
                    location.href = baseUrl + val;
                }
            }
            </script>"""
        list_page.append(jump)
        list_page.append(script)
        str_page = "".join(list_page)
        return str_page
common/pager.py 分页公共模块，在home,py内调用

 

3 继承extend 与 引用include

 

 

说明：

　1 　extend 继承

　　master是公共母版，其他是继承者

　　母版格式： 需要子板继承的格式都写在母版，各自子板的格式自己写

　　　　

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>母版</title>
    <style>
        .pg-header{
            height: 49px;
            background-color: black;
        }
        .pg-footer{
            height: 100px;
            background-color: #dddddd;
        }
    </style>
    {% block css %}
    {% end %}
</head>
<body>

<div class="pg-header">
    母版  header
</div>

<div class="pg-content">  
    {% block body %}

    {% end %}
</div>


<div class="pg-footer"> 母版 footer</div>
    {% block js %}
    {% end %}
</body>
</html>

 

子板格式 ： extend/index.html  extend/fuck.html

index.html

{% extends "../master/layout.html" %}

{% block body %}
    <h1>继承1 fuck</h1>
    {% include "../include/form.html" %}
{% end %}

fuck.html　　

{% extends "../master/layout.html" %}

{% block body %}
    <h1>继承2index</h1>

    {% include "../include/form.html" %}
{% end %}


{% block js %}
    <script>

        console.log("sd")
    </script>

{% end %}

 

 

2 引用 include　 目录结构在上面的截图

　　

引用相对位置的页面即可
{% include "../include/form.html" %}

 

extend/fuck.html

{% extends "../master/layout.html" %}

{% block body %}
    <h1>继承2index</h1>

    {% include "../include/form.html" %}
{% end %}


{% block js %}
    <script>

        console.log("sd")
    </script>

{% end %}


include/form.html

<form>
    <input type="text">
    <input type="submit">
</form>

<ul>
    {% for i in list_info %}  在tornado后台get的时候传过来的一个列表，详细见上面的具体代码
    <li>{{ i }}</li>
    {% end %}

</ul>

　　

4 tornado 路由系统的 域名处理

 

通过在tornado的路由配置不同的域名访问不同的index.html

测试 需要改etc/hosts文件指向127.0.0.1 buy.wupeiqi.com

域名 配置 （import 模块是拆分后的主页所在的模块）

from controller import home  # 主页方法写在包下的模块
from controller import buy


#路由映射　　路由系统

application = tornado.web.Application([
    (r"/index/(?P<page>\d*)",home.IndexHandler),

],**settings)

# 域名访问 只有特定域名访问才会访问该类

application.add_handlers(
    "buy.wupeiqi.com$",[
        (r"/index/(?P<page>\d*)",buy.IndexHandler)
    ]
)

 

浏览器访问 buy.wupeiqi.com:8888/index/　　

 

5 tornado initialize钩子函数

class BaseHandler(tornado.web.RequestHandler):
    def initialize(self):
        self.session = Session(self)#将 Indexhandler 类实例化对象传入

 

看一下tornado.web.ReuestHandler源码

class RequestHandler(object):
    """Base class for HTTP request handlers.

    Subclasses must define at least one of the methods defined in the
    "Entry points" section below.
    """
    SUPPORTED_METHODS = ("GET", "HEAD", "POST", "DELETE", "PATCH", "PUT",
                         "OPTIONS")

    _template_loaders = {}  # type: typing.Dict[str, template.BaseLoader]
    _template_loader_lock = threading.Lock()
    _remove_control_chars_regex = re.compile(r"[\x00-\x08\x0e-\x1f]")

    def __init__(self, application, request, **kwargs):
        super(RequestHandler, self).__init__()

        self.application = application
        self.request = request
        self._headers_written = False
        self._finished = False
        self._auto_finish = True
        self._transforms = None  # will be set in _execute
        self._prepared_future = None
        self._headers = None  # type: httputil.HTTPHeaders
        self.path_args = None
        self.path_kwargs = None
        self.ui = ObjectDict((n, self._ui_method(m)) for n, m in
                             application.ui_methods.items())
        # UIModules are available as both `modules` and `_tt_modules` in the
        # template namespace.  Historically only `modules` was available
        # but could be clobbered by user additions to the namespace.
        # The template {% module %} directive looks in `_tt_modules` to avoid
        # possible conflicts.
        self.ui["_tt_modules"] = _UIModuleNamespace(self,
                                                    application.ui_modules)
        self.ui["modules"] = self.ui["_tt_modules"]
        self.clear()
        self.request.connection.set_close_callback(self.on_connection_close)
        self.initialize(**kwargs)

    def initialize(self):
        """Hook for subclass initialization. Called for each request.

        A dictionary passed as the third argument of a url spec will be
        supplied as keyword arguments to initialize().

        Example::

            class ProfileHandler(RequestHandler):
                def initialize(self, database):
                    self.database = database

                def get(self, username):
                    ...

            app = Application([
                (r'/user/(.*)', ProfileHandler, dict(database=database)),
                ])
        """
        pass
大家看到了吧 initialize钩子函数

要想让下面的代码运行起来，还需要再下一个jQuery-cookie。js

 

#!/usr/bin/env python
#_*_coding:utf-8_*_

import  tornado.web
import tornado.ioloop

"""
session

1、面向对象基础

面向对象中通过索引的方式访问对象，需要内部实现 __getitem__ 、__delitem__、__setitem__方法


obj = class1()
obj() ====对象加括号调用的是类的__call__方法

如果要设置 获取 删除 需要__getitem__ 、__delitem__、__setitem__方法

#!/usr/bin/env python
# -*- coding:utf-8 -*-

class Foo(object):

    def __getitem__(self, key):
        print  '__getitem__',key

    def __setitem__(self, key, value):
        print '__setitem__',key,value

    def __delitem__(self, key):
        print '__delitem__',key



obj = Foo()
result = obj['k1']
#obj['k2'] = 'wupeiqi'
#del obj['k1']

"""
container = {}
# container = {
#     # "第一个人的随机字符串":{}，
#     # "第一个人的随机字符串":{'k1': 111, 'parents': '你'}，
# }

class Session:
    def __init__(self, handler):
        self.handler = handler
        self.random_str = None

    def __genarate_random_str(self):
        import hashlib
        import time
        obj = hashlib.md5()
        obj.update(bytes(str(time.time()), encoding='utf-8'))
        random_str = obj.hexdigest()
        return random_str

    # def set_value(self, key,value):
    def __setitem__(self, key, value):
        # 在container中加入随机字符串
        # 定义专属于自己的数据
        # 在客户端中写入随机字符串
        # 判断，请求的用户是否已有随机字符串
        if not self.random_str: # 重点1个: 如果我设置1成cookie的key val 这段代码一定会走,但是如果我连续对象调这个方法设置多个值,这段代码则不会走了
            random_str = self.handler.get_cookie('__session__')
            if not random_str:
                random_str = self.__genarate_random_str()
                container[random_str] = {}
            else:
                # 客户端有随机字符串
                if random_str in container.keys():
                    pass
                else:
                    random_str = self.__genarate_random_str()
                    container[random_str] = {}
            self.random_str = random_str # self.random_str = asdfasdfasdfasdf

        container[self.random_str][key] = value
        self.handler.set_cookie("__session__", self.random_str)

    def __getitem__(self, key):
        # 获取客户端的随机字符串
        # 从container中获取专属于我的数据
        #  专属信息【key】
        random_str =  self.handler.get_cookie("__session__")
        print("client ", random_str)
        if not random_str:
            return None
        # 客户端有随机字符串
        user_info_dict = container.get(random_str,None)
        if not user_info_dict:
            return None
        value = user_info_dict.get(key, None)
        return value



class BaseHandler(tornado.web.RequestHandler):
    def initialize(self):
        self.session = Session(self)#将 Indexhandler 类实例化对象传入




class IndexHandler(BaseHandler):
    def get(self):
        if self.get_argument("u",None) in ["alex","eric"]:
            self.session["is_login"] = True
            self.session["name"] = self.get_argument("u",None)
            print(container)
            self.write("dffff   df cookie设置成功了")
        else:
            self.write("请d d s 登录")

class ManaggerHandler(BaseHandler):
    def get(self, *args, **kwargs):
        print(container)
        # print(self.get_cookie("__session__"))
        val = self.session["is_login"]
        if val:
            self.write(self.session["name"]+"登录成功")
        else:
            self.write("登录失败1sdfdsfds2")


# 图片验证码

class CheckCodeHandler(BaseHandler):
    def get(self, *args, **kwargs):
        #生成 图片并且返回
        import io
        import check_code
        mstream = io.BytesIO()
        img, code = check_code.create_validate_code()

        # 将图片对象写入mstream,
        img.save(mstream,"GIF")
        # 为每个用户保存期验证码
        self.session["CheckCode"] = code

        self.write(mstream.getvalue())


class LoginHandler(BaseHandler):
    def get(self, *args, **kwargs):
        self.render('login.html', status="")

    def post(self, *args, **kwargs):
        user = self.get_argument('user', None)
        pwd = self.get_argument('pwd', None)
        code = self.get_argument('code', None)

        check_code = self.session["CheckCode"]
        if code.upper() == check_code.upper():
            self.write('验证码正确')
        else:
            # self.redirect('/login')
            self.render('login.html', status='验证码错误')

# csrf

class CsrfHandler(BaseHandler):

    def get(self, *args, **kwargs):
        self.render('csrf.html')

    def post(self, *args, **kwargs):
        self.write('csrf.post')


settings = {
    "template_path":"views",
    "static_path":"statics",
    "static_url_prefix":"/statics/",
    "cookie_secret":"dsfsfsafsdfasdf",
    'xsrf_cookies': True # csrf的cookie

}

application = tornado.web.Application([
    (r"/index",IndexHandler),
    (r"/manager",ManaggerHandler),
    (r"/login", LoginHandler),
    (r"/check_code", CheckCodeHandler),
    (r"/csrf", CsrfHandler), # 定义路由

],**settings)

if __name__ == '__main__':

    application.listen(8888)
    tornado.ioloop.IOLoop.instance().start()
session模块整合后的tornado后端
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form action="/login" method="post">
        <p><input name="user" type="text" placeholder="用户"/></p>
        <p><input name='pwd' type="text" placeholder="密码"/></p>
        <p>
            <input name="code" type="text" placeholder="验证码"/>
            <img src="/check_code" onclick='ChangeCode();' id='imgCode'>
        </p>
        <input type="submit" value="Submit" /> <span style="color:red">{{status}}</span>
    </form>
    <script type="text/javascript">

        function ChangeCode() {
            var code = document.getElementById('imgCode');
//            code.src += '?';
        }
    </script>
</body>
</html>
login.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<div>
    <h1>
        cookie有两种写入方式:
        <br>
            1 服务端写入到浏览器
        <br>
            2 浏览器自己通过js写入  document.cookie
    </h1>


</div>

<script src="/statics/jquery.cookie.js"></script>
<script src="/statics/jquery-1.12.4.js"></script>

<script>
    // javascripts方式 在浏览器设置cookie
    function setCookieBySeconds(name,value,expires) {
        var current_date = new Date();
        current_date.setDate(current_date.getSeconds() + expires);
        document.cookie = name + "= " +value +";expires=" + current_date.toUTCString()

    };
    function setCookieByDays(name,value,expires) {

        var current_date = new Date();
        current_date.setDate(current_date.getDay() + expires);
        document.cookie = name +"= " +value +";expires="+current_date.toUTCString() // 要转换为utc时间

    }
    // 调用
    // setCookieBySeconds('k1','v1',5) // 5秒过期
    // setCookieByDays('k1','v1',5) // 5天过期

    //###################jQuery设置###################
    $.cookie('k1','v1',{expires:7}); // 7天 设置k1=v1的cookie7天过期

    //如果不是按天的话,需要先定义时间秒变量
    var  current_date = new Date();
    current_date.setDate(current_date.getSeconds() + 6) ; //当前时间+6s
    $.cookie('k1',"v1",{expires:current_date}) //6s 后过期


</script>

</body>
</html>
index.html
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <form action="/csrf" method="post">
        {% raw xsrf_form_html() %}
        <!--输出结果如下-->
        <!--<input type="hidden" name="_xsrf" value="2|1a3c1c71|31ad9ca267d4350e09d426eb66244e5b|1470061982">-->
        <p><input name="user" type="text" placeholder="用户"/></p>
        <p><input name='pwd' type="text" placeholder="密码"/></p>
        <p>
            <input name="code" type="text" placeholder="验证码"/>
            <img src="/check_code" onclick='ChangeCode();' id='imgCode'>
        </p>
        <input type="submit" value="Submit" /> <span style="color:red"></span>
    </form>
    <script src="/statics/jquery-1.12.4.js"></script>
    <input type="button" value="Ajax CSRF" onclick="SubmitCsrf();" />
    <script type="text/javascript">

        function ChangeCode() {
            var code = document.getElementById('imgCode');
            code.src += '?';
        }
        function getCookie(name) {
            var r = document.cookie.match("\\b" + name + "=([^;]*)\\b");


            return r ? r[1] : undefined;

            /*document.cookie
            "k1=2|1:0|10:1469588097|2:k1|4:OTk5|1b6ea1b4be4fa44f24e1add4447c74c27f969248bef14f19b347ed9f703b20a5; user="2|1:0|10:1469606426|4:user|8:YWxleA==|465b3e5dc3a2585bd5f5200a46c11e406b759a4c4fd7d96f5554b99bcdc619e9"; _xsrf=2|53738789|78e2075a2e9baef6409bbd132f6bd5a3|1470061982; __session__=f01a331979313ee036accf4be458ef11"
            name = "_xsrf"
            "_xsrf"
            document.cookie.match("\\b" + name + "=([^;]*)\\b");
            ["_xsrf=2|53738789|78e2075a2e9baef6409bbd132f6bd5a3|1470061982", "2|53738789|78e2075a2e9baef6409bbd132f6bd5a3|1470061982"]*/
        }

        function SubmitCsrf() {
            var nid = getCookie('_xsrf'); //csrf的name名
            $.post({
                url: '/csrf',
                data: {'k1': 'v1',"_xsrf": nid},
                success: function (callback) {
                    // Ajax请求发送成功有，自动执行
                    // callback，服务器write的数据 callback=“csrf.post”
                    console.log(callback);
                }
            });
        }
    </script>
</body>
</html>
csrf.html 后面的文章介绍到csrf时候再详细介绍

 

　　

 

　　

　　

　　

　　　　

 

 

 

　

posted @ 2016-07-25 16:55  众里寻，阑珊处  阅读(322)  评论(0)  编辑  收藏  举报
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