[py]一步一步实现tornado form验证
来源：互联网 发布：淘宝led散热片 编辑：程序博客网 时间：2024/05/24 06:09
第一关
第二关
第四关
第五关
第六关
以下是各步逐渐成熟的代码.关数和上面图无关.
相关git代码
第零关: 一个index表单
#!/usr/bin/env python# -*- coding:utf-8 -*-import tornado.ioloopimport tornado.webfrom hashlib import sha1import os, timeimport re# 创建form类class MainForm(object): # 初始化 def __init__(self): self.host = "(.*)" self.ip = "^(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}$" self.port = '(\d+)' self.phone = '^1[3|4|5|8][0-9]\d{8}$' # 验证 def check_valid(self, request): # 循环当前类中的成员，注意此种方法 flag = True value_dict = {} for key, regular in self.__dict__.items(): ''' 通过request.get_argument()来获取用户前端输入的值 在循环时，不需要关心前端输入值的个数，这里以自定义方法为主 ''' post_value = request.get_argument(key) # 前端提交的数据与自定义的正则表达式进行匹配验证 ret = re.match(regular, post_value) print(key,"---------",ret, "---------",post_value) # 如果结果 结果为None时候,即只要有一项不匹配,就返回false,flag = False if not ret: flag = False # {"ip":192.168.1.1,"port":8080,....} value_dict[key] = post_value # print(value_dict) return flag,value_dictclass MainHandler(tornado.web.RequestHandler): def get(self): self.render('index.html') def post(self, *args, **kwargs): obj = MainForm() is_valid, value_dict= obj.check_valid(self) # self.write('ok') # 如果全部验证成功,则打印 if is_valid: print(value_dict) self.write("ok")settings = { 'template_path': 'templates', 'static_path': 'statics', 'static_url_prefix': '/static/', 'cookie_secret': 'aiuasdhflashjdfoiuashdfiuh', 'login_url': '/login'}application = tornado.web.Application([ (r"/index", MainHandler),], **settings)if __name__ == "__main__": print("http://127.0.0.1:8888/index") application.listen(8888) tornado.ioloop.IOLoop.instance().start()index.html
<!DOCTYPE html><html><head lang="en"> <meta charset="UTF-8"> <title></title> <link href="{{static_url("commons.css")}}" rel="stylesheet" /></head><body> <h1>hello</h1> <form action="/index" method="post"> <p>hostname: <input type="text" name="host" /> </p> <p>ip: <input type="text" name="ip" /> </p> <p>port: <input type="text" name="port" /> </p> <p>phone: <input type="text" name="phone" /> </p> <input type="submit" /> </form></body></html>第一关: 2个表单index和home需要验证
form11.html
#!/usr/bin/env python# -*- coding:utf-8 -*-import tornado.ioloopimport tornado.webfrom hashlib import sha1import os, timeimport re# 创建indexform类class IndexForm(object): # 初始化 def __init__(self): self.host = "(.*)" self.ip = "^(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}$" self.port = '(\d+)' self.phone = '^1[3|4|5|8][0-9]\d{8}$' # 验证 def check_valid(self, request): # 循环当前类中的成员，注意此种方法 flag = True value_dict = {} for key, regular in self.__dict__.items(): ''' 通过request.get_argument()来获取用户前端输入的值 在循环时，不需要关心前端输入值的个数，这里以自定义方法为主 ''' post_value = request.get_argument(key) # 前端提交的数据与自定义的正则表达式进行匹配验证 ret = re.match(regular, post_value) print(key,"---------",ret, "---------",post_value) # 如果结果 结果为None时候,即只要有一项不匹配,就返回false,flag = False if not ret: flag = False # {"ip":192.168.1.1,"port":8080,....} value_dict[key] = post_value # print(value_dict) return flag,value_dict# 创建homeform类class HomeForm(object): # 初始化 def __init__(self): self.host = "(.*)" self.ip = "^(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}$" # 验证 def check_valid(self, request): # 循环当前类中的成员，注意此种方法 flag = True value_dict = {} for key, regular in self.__dict__.items(): ''' 通过request.get_argument()来获取用户前端输入的值 在循环时，不需要关心前端输入值的个数，这里以自定义方法为主 ''' post_value = request.get_argument(key) # 前端提交的数据与自定义的正则表达式进行匹配验证 ret = re.match(regular, post_value) print(key,"---------",ret, "---------",post_value) # 如果结果 结果为None时候,即只要有一项不匹配,就返回false,flag = False if not ret: flag = False # {"ip":192.168.1.1,"port":8080,....} value_dict[key] = post_value # print(value_dict) return flag,value_dictclass IndexHandler(tornado.web.RequestHandler): def get(self): self.render('index.html') def post(self, *args, **kwargs): obj = IndexForm() is_valid, value_dict= obj.check_valid(self) # self.write('ok') # 如果全部验证成功,则打印 if is_valid: print(value_dict) self.write("ok")class HomeHandler(tornado.web.RequestHandler): def get(self): self.render('home.html') def post(self, *args, **kwargs): obj = HomeForm() is_valid, value_dict= obj.check_valid(self) # self.write('ok') # 如果全部验证成功,则打印 if is_valid: print(value_dict) self.write("ok")settings = { 'template_path': 'templates', 'static_path': 'statics', 'static_url_prefix': '/static/', 'cookie_secret': 'aiuasdhflashjdfoiuashdfiuh', 'login_url': '/login'}application = tornado.web.Application([ (r"/index", IndexHandler), (r"/home", HomeHandler),], **settings)if __name__ == "__main__": print("http://127.0.0.1:8888/index") application.listen(8888) tornado.ioloop.IOLoop.instance().start()index.html
<!DOCTYPE html><html><head lang="en"> <meta charset="UTF-8"> <title></title> <link href="{{static_url("commons.css")}}" rel="stylesheet" /></head><body> <h1>hello</h1> <form action="/index" method="post"> <p>hostname: <input type="text" name="host" /> </p> <p>ip: <input type="text" name="ip" /> </p> <p>port: <input type="text" name="port" /> </p> <p>phone: <input type="text" name="phone" /> </p> <input type="submit" /> </form></body></html>home.html
<!DOCTYPE html><html><head lang="en"> <meta charset="UTF-8"> <title></title> <link href="{{static_url("commons.css")}}" rel="stylesheet" /></head><body> <h1>hello</h1> <form action="/home" method="post"> <p>hostname: <input type="text" name="host" /> </p> <p>ip: <input type="text" name="ip" /> </p> <input type="submit" /> </form></body></html>第二关:2个表单index和home需要验证-继承
- 完整code
form12.py
#!/usr/bin/env python# -*- coding:utf-8 -*-import reimport tornado.web# 验证类class BaseForm(object): # 验证 def check_valid(self, request): # 循环当前类中的成员，注意此种方法 flag = True value_dict = {} for key, regular in self.__dict__.items(): ''' 通过request.get_argument()来获取用户前端输入的值 在循环时，不需要关心前端输入值的个数，这里以自定义方法为主 ''' post_value = request.get_argument(key) # 前端提交的数据与自定义的正则表达式进行匹配验证 ret = re.match(regular, post_value) print(key, "---------", ret, "---------", post_value) # 如果结果 结果为None时候,即只要有一项不匹配,就返回false,flag = False if not ret: flag = False # {"ip":192.168.1.1,"port":8080,....} value_dict[key] = post_value # print(value_dict) return flag, value_dict# 创建indexform类class IndexForm(BaseForm): # 初始化 def __init__(self): self.host = "(.*)" self.ip = "^(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}$" self.port = '(\d+)' self.phone = '^1[3|4|5|8][0-9]\d{8}$'# 创建homeform类class HomeForm(BaseForm): # 初始化 def __init__(self): self.host = "(.*)" self.ip = "^(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}$"class IndexHandler(tornado.web.RequestHandler): def get(self): self.render('index.html') def post(self, *args, **kwargs): obj = IndexForm() is_valid, value_dict = obj.check_valid(self) # self.write('ok') # 如果全部验证成功,则打印 if is_valid: print(value_dict) self.write("ok")class HomeHandler(tornado.web.RequestHandler): def get(self): self.render('home.html') def post(self, *args, **kwargs): obj = HomeForm() is_valid, value_dict = obj.check_valid(self) # self.write('ok') # 如果全部验证成功,则打印 if is_valid: print(value_dict) self.write("ok")settings = { 'template_path': 'templates', 'static_path': 'statics', 'static_url_prefix': '/static/', 'cookie_secret': 'aiuasdhflashjdfoiuashdfiuh', 'login_url': '/login'}application = tornado.web.Application([ (r"/index", IndexHandler), (r"/home", HomeHandler),], **settings)if __name__ == "__main__": print("http://127.0.0.1:8888/index") application.listen(8888) tornado.ioloop.IOLoop.instance().start()## 不能区分是哪里错了home.html
<!DOCTYPE html><html><head lang="en"> <meta charset="UTF-8"> <title></title> <link href="{{static_url("commons.css")}}" rel="stylesheet" /></head><body> <h1>hello</h1> <form action="/home" method="post"> <p>hostname: <input type="text" name="host" /> </p> <p>ip: <input type="text" name="ip" /> </p> <input type="submit" /> </form></body></html>index.html
<!DOCTYPE html><html><head lang="en"> <meta charset="UTF-8"> <title></title> <link href="{{static_url("commons.css")}}" rel="stylesheet" /></head><body> <h1>hello</h1> <form action="/index" method="post"> <p>hostname: <input type="text" name="host" /> </p> <p>ip: <input type="text" name="ip" /> </p> <p>port: <input type="text" name="port" /> </p> <p>phone: <input type="text" name="phone" /> </p> <input type="submit" /> </form></body></html>第三关:封装字段
理解这个,需要一点前戏, 猛戳这里
以ipfield为例
- 效果
如果没自定义信息,如果输入格式错误,则报系统内置错误
如果自定义了错误信息,则优先报自定义的错误
逻辑关系
代码逻辑
- 完整code
form13.py
#!/usr/bin/env python# -*- coding:utf-8 -*-import reimport tornado.webclass IPField: REGULAR = "^(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}$" # error_dict 自定义报错信息 def __init__(self, error_dict=None, required=True): self.error_dict = {} # 如果自定义了错误信息,更新错误 if error_dict: self.error_dict.update(error_dict) # 保存required self.required = required # 错误信息 self.error = None # 是否匹配 self.is_valid = None # 匹配成功后值是多少 self.value = None # name 字段名(便于提示错误) # input_value 用于输入值,用于验证 def validate(self, name, input_value): ''' :param name: 字段名(便于提示错误) :param input_value: :return: input_value 用于输入值,用于验证 ''' if not self.required: # 值允许为空 self.is_valid = True self.value = input_value else: # 值不允许为空 if not input_value.strip(): # 用户输入为空 if self.error_dict.get("required", None): # 生成错误信息 self.error = self.error_dict["required"] else: # 提示ip不能为空 self.error = "%s is required" % name else: # 用户输入了ip,接下来判断ip格式 ret = re.match(IPField.REGULAR, input_value) # 静态字段IPField.REGULAR if ret: # 匹配成功 self.is_valid = True self.value = ret.group() # self.value = ret.input_value else: # 匹配失败 构造错误信息 if self.error_dict.get("valid", None): self.error = self.error_dict["valid"] else: self.error = "%s is invalid" % name# 验证类class BaseForm(object): # 验证 def check_valid(self, handle): # 循环当前类中的成员，注意此种方法 flag = True value_dict = {} # 错误信息 error_msg_dict = {} success_value_dict = {} for key, regular in self.__dict__.items(): # key: ip # regular: IPField对象 # input_value 用户输入的值 input_value = handle.get_argument(key) regular.validate(key, input_value) # 如果验证成功 if regular.is_valid: # pass success_value_dict[key] = regular.value else: error_msg_dict[key] = regular.error # 如果验证失败 flag = False value_dict[key] = input_value return flag, success_value_dict, error_msg_dict# 创建homeform类class HomeForm(BaseForm): # 初始化 def __init__(self): # self.host = "(.*)" # self.ip = "^(25[0-5]|2[0-4]\d|[0-1]?\d?\d)(\.(25[0-5]|2[0-4]\d|[0-1]?\d?\d)){3}$" self.ip = IPField(required=True, error_dict={"required": "别闹,不能为空", "valid": "格式错了,兄弟..."}) # required=True 必须要写 # self.ip = IPField()class HomeHandler(tornado.web.RequestHandler): def get(self): self.render('home1.html') def post(self, *args, **kwargs): obj = HomeForm() is_valid, success_dict, error_dict = obj.check_valid(self) # self.write('ok') # 如果全部验证成功,则打印 if is_valid: print("sucess", success_dict) else: print("error", error_dict)settings = { 'template_path': 'templates', 'static_path': 'statics', 'static_url_prefix': '/static/', 'cookie_secret': 'aiuasdhflashjdfoiuashdfiuh', 'login_url': '/login'}application = tornado.web.Application([ (r"/home", HomeHandler),], **settings)if __name__ == "__main__": print("http://127.0.0.1:8888/index") application.listen(8888) tornado.ioloop.IOLoop.instance().start()home1.html
<!DOCTYPE html><html><head lang="en"> <meta charset="UTF-8"> <title></title> <link href="{{static_url("commons.css")}}" rel="stylesheet" /></head><body> <h1>hello</h1> <form action="/home" method="post"> <p>ip: <input type="text" name="ip" /> </p> <input type="submit" /> </form></body></html>阅读全文
0 0
- [py]一步一步实现tornado form验证
- [py]tornado form表单逻辑前戏
- [py]tornado分页实现-从本质到完全实现
- [py]tornado-jquery ajax
- [py]tornado诠释cookie
- python开发框架(tornado, web.py)
- [py]pyweb框架本质-tornado框架初探
- sharepoint实现简单的form验证
- tomcat配合实现basic与FORM验证
- tomcat配合实现basic与FORM验证
- tomcat配合实现basic与FORM验证
- web实现basic与FORM验证
- 06、一步一步学thinkjs之实现登录验证
- java验证 web实现basic与FORM验证
- Form验证
- form验证
- Form验证
- Form验证
- java 打印日志的几种方式
- G
- 基数排序
- MongoDB开发学习（2）索引的基本操作
- HDU6172-Array Challenge
- [py]一步一步实现tornado form验证
- 分布式应用系统服务器上下线动态感知程序开发学习笔记
- not in 和 not exists 区别
- mongodb常用命令
- python中文件基本操作
- keilc 4 编译出现的几个错误解决
- QT5.9 在线程中导出EXCLE报 CoCreateInstance failure (尚未调用 CoInitialize) 解决办法
- CFGym 101002C 状压DP
- oracle内置函数
