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二十六 .ajax登录 认证 验证码(session)

由 孤街浪徒 提交于 2020-02-11 05:49:16
一. ajax 登录 认证 验证码 https://download.csdn.net/download/baobao267/10722491 Django之Form表单验证及Ajax验证方式汇总 https://download.csdn.net/download/baobao267/10722491 Django之Form表单验证及Ajax验证方式汇总 https://blog.csdn.net/HFZeng/article/details/98654307 https://blog.csdn.net/kkorkk/article/details/80150644 https://www.jb51.net/article/165394.htm https://segmentfault.com/q/1010000009345281 https://blog.csdn.net/huangql517/article/details/81259011 templates<!DOCTYPE html> <html lang="en"> <head> {% load staticfiles %} <meta charset="UTF-8"> <title>login</title> <link rel="stylesheet" type="text/css" href="{%static

python中random模块

由 让人想犯罪 __ 提交于 2020-02-11 01:44:51
python中random函数 使用之前要先导入random模块：import random (1). random.uniform(a， b)—用于生成指定范围[a,b] 或者[a,b)内的浮点数字 import random n = random . uniform ( 3 , 5 ) #在[3，5）范围内生成一个浮点数 print ( n ) 3.742022683986172 (2).random.random()–生成[0, 1)范围内的随机浮点数 import random n = random . random ( ) print ( n ) 0.37348131780988314 (3).random.randint(a,b)–选取[a, b]范围内随机的整数 import random random . randint ( 4 , 8 ) 8 (4).random.randrange(start, stop, step=1, _int=<class ‘int’>)，从[start, stop]中随机选择一个值返回，默认返回值类型为int，step默认为1.。start和stop为必须的参数，其他是可选参数。 import random n = random . randrange ( 20 , 30 , 2 ) #随机返回一个【20，30】内的偶数 print (

BBS+Blog项目开发

由 ￡可爱￡侵袭症＋ 提交于 2020-02-10 21:45:07
1.需求分析和表结构设计 一 项目开发流程 1.1 需求分析 (1) 基于用户认证组件和Ajax实现登录验证(图片验证码) (2) 基于forms组件和Ajax实现注册功能 (3) 设计系统首页（文章列表渲染） (4) 设计个人站点页面 (5) 文章详情页 (6) 实现文章点赞功能 (7) 实现文章的评论 －－－文章的评论 －－－评论的评论 (8) 富文本编辑框和防止xss攻击 1.2 表结构设计 博客系统的表关系： from django.db import models # Create your models here. from django.contrib.auth.models import AbstractUser class UserInfo(AbstractUser): """ 用户信息 """ nid = models.AutoField(primary_key=True) telephone = models.CharField(max_length=11, null=True, unique=True) avatar = models.FileField(upload_to='avatars/', default="/avatars/default.png") create_time = models.DateTimeField(verbose_name=

Seeding a random number generator C++ [duplicate]

由 做~自己de王妃 提交于 2020-02-10 15:13:48
问题 This question already has answers here : How to generate a random number in C++? (10 answers) Closed 2 years ago . I have two questions. What other ways are there to seed a psuedo-random number generator in C++ without using srand(time(NULL)) ? The reason I asked the first question. I'm currently using time as my seed for my generator, but the number that the generator returns is always the same. I'm pretty sure the reason is because the variable that stores time is being truncated to some

Seeding a random number generator C++ [duplicate]

由 独自空忆成欢 提交于 2020-02-10 15:13:29
问题 This question already has answers here : How to generate a random number in C++? (10 answers) Closed 2 years ago . I have two questions. What other ways are there to seed a psuedo-random number generator in C++ without using srand(time(NULL)) ? The reason I asked the first question. I'm currently using time as my seed for my generator, but the number that the generator returns is always the same. I'm pretty sure the reason is because the variable that stores time is being truncated to some

python学习—random生成随机数

由 让人想犯罪 __ 提交于 2020-02-09 20:07:49
random.random()---随机生成0到1的小数 random.randint（x，y）---随机生成x到y的整数，闭区间，包含两端 random.uniform(a，b)---随机生成a到b的浮点数，闭区间，包含两端 使用随机数模块生成一个5到10之间的浮点数，输出到控制台 import random a1 = random.random() a2 = random.randint(5, 9) number = a2 + a1 print(number) # 扩展:实现方式:random.uniform() print(random.uniform(5, 10)) 来源： https://www.cnblogs.com/erchun/p/12288399.html

RandomPool等概率随机快速获取key

由 爱⌒轻易说出口 提交于 2020-02-09 03:28:05
文章目录 等概率随机快速获取key的结构 RandomPool结构 算法思路 相应代码 等概率随机快速获取key的结构 RandomPool结构 完成以下三个功能: insert(key):将某个key加入到该结构，做到不重复加入； delete(key):将原本在结构中的某个key移除； getRandom(): 等概率随机返回结构中的任何一个key。 【要求】 insert 、 delete 和 getRandom 方法的时间复杂度都是 O ( 1 ) O(1) O ( 1 ) 。 算法思路 HashSet 结构 insert 、 delete 操作时间复杂度为 O ( 1 ) O(1) O ( 1 ) ，而现需要等概率随机返回key； random 等概率生成数值，而 HashSet 按 key 索引而不是数值索引，因此想到使用 HashMap 引入数值； 所以用两个 HashMap ： key_num_map 和 num_key_map key_num_map 维护 key 值 num_key_map 通过随机生成的数值获取 key 要点 ： count 保存 key数量 对应的 num 值随着 count 增加（唯一）； key_num_map 和 num_key_map 在移除 给定的key 时需要 调整对应的num和count ； num为给定key对应的值

统计100-999中水仙花的个数

由 此生再无相见时 提交于 2020-02-08 09:38:19
/ 1、建立一个100个元素的一维数组，随机生成每个元素的值，范围为[100,999]，统计水仙花数的个数。 / import java.util.Random; public class Testwyz123{ public static void main(String[] args){ Random r = new Random(); int[] a=new int[100]; int b,c,d; int n=0; System.out.println(“数组为”); for(int i=0;i<a.length;i++){ a[i]=r.nextInt(900)+100; System.out.println(“a[”+i+"]="+a[i]); b=a[i]%10; d=a[i]/100; c=a[i]/10%10; if(b b b+c c c+d d d==a[i]){ n++; } } System.out.println(“水仙花个数为:”+n); } } 来源： CSDN 作者： qq_45567225 链接： https://blog.csdn.net/qq_45567225/article/details/103647831

What algorithm is Rand() based on in C language? [duplicate]

由 ℡╲_俬逩灬. 提交于 2020-02-08 09:14:05
问题 This question already has answers here : What common algorithms are used for C's rand()? (4 answers) Closed 4 years ago . I have been researching the source code of Rand() for a while, but until now I couldn't figure out the whole picture of the function. The following are the source codes found and researched by me: rand.c random.c Could somebody provide some advices or assistance for me? Thanks a million! 回答1: It's not required to be based on any specific algorithm but many will use a

登录验证码

由 怎甘沉沦 提交于 2020-02-08 03:44:41
　　　　 //// <summary> /// 生成验证码 /// </summary> /// <param name="length">指定验证码的长度</param> /// <returns></returns> public static string CreateValidateCode(int length) { int[] randMembers = new int[length]; int[] validateNums = new int[length]; string validateNumberStr = ""; //生成起始序列值 int seekSeek = unchecked((int)DateTime.Now.Ticks); Random seekRand = new Random(seekSeek); int beginSeek = (int)seekRand.Next(0, Int32.MaxValue - length * 10000); int[] seeks = new int[length]; for (int i = 0; i < length; i++) { beginSeek += 10000; seeks[i] = beginSeek; } //生成随机数字 for (int i = 0; i < length; i++) {
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