django - 开发个人博客 | 登录 | 验证码

1. urls

    path('login/', views.login),

    path('index/', views.index),

    # 登录 验证码图片
    path('get_validCode_img/', views.get_validCode_img),

2. views 代码

from django.shortcuts import render, HttpResponse, redirect
from django.http import JsonResponse
from django.contrib import auth

# 首页面
def index(request):
    return render(request, 'index.html')



# 用户登录
def login(request):

    if request.method == 'POST':

        response = {'user': None, 'msg': None}

        # 接受前台数据
        user = request.POST.get('user')
        pwd = request.POST.get('pwd')
        valid_code = request.POST.get('valid_code')



        # 获取session中 验证码
        valid_code_str = request.session.get('valid_code_str')
        if valid_code.upper() == valid_code_str.upper():
            user = auth.authenticate(username=user, password=pwd)
            if user:
                auth.login(request, user)  # rerequest.user 当前登录对象
                response['user'] = user.username
            else:
                response['msg'] = '用户名或密码错误'
        else:
            response['msg'] = '验证码错误'
        return JsonResponse(response)
    return render(request, 'login.html')


# 随机数 字母 验证码
def get_validCode_img(request):
    # 得到一个随机颜色
    import random
    def get_random_color():
        return (random.randint(0,255),random.randint(0,255),random.randint(0,255))


    '''
        画板-> Image, 笔->ImageDraw, 字体->ImageFont 
        需要安装 pip install pilow -> Image: 图片 , ImageDraw->画笔
    '''
    from PIL import Image, ImageDraw, ImageFont
    # 创建一张图片 rgb :彩色图片; 长 高 ; 背景颜色
    img = Image.new('RGB', (190, 34), color=get_random_color())

    # 在 img 上画文字
    draw = ImageDraw.Draw(img)
    # 设置字体 路径 与 字体大小
    font = ImageFont.truetype('static/fonts/hanyi.ttf', size=20)

    # 保存验证码字符串
    valid_code_str = ''

    for i in range(2):
        # 得到随机数字
        random_num = str(random.randint(0, 9))
        # 得到随机大写字母
        random_alpha = chr(random.randint(65, 90))
        # 随机选择 random_num 与 random_alpha 一个字符
        random_char = random.choice([random_num, random_alpha])
        # 验证码保存到 code_str 变量
        valid_code_str += random_char

        # 画字->draw.text()  画点->draw.point()  画线->draw.line()
        draw.text((i * 29 + 20, 8), random_char, '#ffffff', font=font)



    # ''' 画干扰线 '''
    # width = 190
    # height = 34
    # for i in range(10):
    #     x1 = random.randint(0, width)
    #     x2 = random.randint(0, width)
    #     y1 = random.randint(0, height)
    #     y2 = random.randint(0, height)
    #     draw.line((x1, y1, x2, y2), fill=get_random_color())
    #
    # ''' 画干扰点 '''
    # for i in range(80):
    #     draw.point([random.randint(0, width), random.randint(0, height)], fill=get_random_color())
    #
    # # 写干扰圆圈
    # for i in range(40):
    #     draw.point([random.randint(0, width), random.randint(0, height)], fill=get_random_color())
    #     x = random.randint(0, width)
    #     y = random.randint(0, height)
    #     draw.arc((x, y, x + 4, y + 4), 0, 90, fill=get_random_color())




    # 将验证码 写入session 中
    request.session['valid_code_str'] = valid_code_str
    #print(valid_code_str)

    ''' 通过内存方式 来获取验证码  '''
    # 内存管理工具
    from io import BytesIO
    # 创建一个内存据点
    f = BytesIO()
    # 图片保存 在据点f 以png格式
    img.save(f, 'png')
    # 读取数据
    data = f.getvalue()

    return HttpResponse(data)

3. 静态页面 index

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
    <h2> 登录成功 {{ request.user.username }}</h2>
</body>
</html>

4. 静态页面登录页面 login

{% load static %}
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title> 登录页面 </title>
    <link rel="stylesheet" href="{% static  'css/bootstrap.min.css' %}">
</head>
<body>

<div class="container">

    <div style="width: 500px; margin: auto; margin-top:150px; height: 420px; box-shadow: 1px 1px 10px #444; padding: 40px 40px">
        <h2> 用户登录 </h2>
        <form>
        {% csrf_token %}
        <div class="form-group">
            <label for="user">用户名</label>
            <input type="text" class="form-control"  id="user" placeholder="用户名">
        </div>
        <div class="form-group">
            <label for="pwd">密码</label>
            <input type="password" class="form-control" id="pwd" placeholder="密码">
        </div>

        <div class="form-group">
            <label for="code">验证码</label>
            <div class="row">
                <div class="col-lg-6">
                    <input type="text" class="form-control" id="valid_code" placeholder="验证码">
                </div>

                 <div class="col-lg-6">
                     <img style="height: 34px; width: 190px;" src="/get_validCode_img/" alt="" id="valid_code_img">
                </div>
            </div>
        </div>

        <input type="button" class="btn btn-success login_btn" value="提交">
        <span class="error"></span>
        </form>
    </div>

</div>

<script src="{% static  'js/jquery.min.js' %}"></script>
<script>
    // 验证码图片刷新
    $('#valid_code_img').click(function () {
        $(this)[0].src += '?'
    });

    // 登录验证
    $('.login_btn').click(function () {

        $.ajax({
            url:'',
            type: 'post',
            data:{
                user:$('#user').val(),
                pwd:$('#pwd').val(),
                valid_code:$('#valid_code').val(),
                csrfmiddlewaretoken:$("[name='csrfmiddlewaretoken']").val()
            },
            success:function (data) {
                console.log(data)
                if (data.user){
                    location.href='/index/'
                }
                else{
                    $('.error').text(data.msg).css({'color':'red', 'margin-left':'10px'})
                }
            }
        })
    })

</script>
</body>
</html>

6. setting 文件

"""
Django settings for boke project.

Generated by 'django-admin startproject' using Django 4.0.5.

For more information on this file, see
https://docs.djangoproject.com/en/4.0/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/4.0/ref/settings/
"""

from pathlib import Path
import os
# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/4.0/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = 'django-insecure-^l2di0fn7!xp1l7_3p90+9kwh^i3r4-=bm9+lp!14)vxuyj6lk'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
    'app.apps.AppConfig',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'boke.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [BASE_DIR / 'templates']
        ,
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

WSGI_APPLICATION = 'boke.wsgi.application'


# Database
# https://docs.djangoproject.com/en/4.0/ref/settings/#databases

# DATABASES = {
#     'default': {
#         'ENGINE': 'django.db.backends.sqlite3',
#         'NAME': BASE_DIR / 'db.sqlite3',
#     }
# }


DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.mysql',
        'NAME': 'boke0001',
        'USER': 'boke0001',
        'PASSWORD': 'boke0001',
        'HOST': '127.0.0.1',
        'PORT': 3306,
    }
}



# Password validation
# https://docs.djangoproject.com/en/4.0/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/4.0/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/4.0/howto/static-files/

STATIC_URL = 'static/'
STATICFILES_DIRS=[
    os.path.join(BASE_DIR, 'static')
]
# Default primary key field type
# https://docs.djangoproject.com/en/4.0/ref/settings/#default-auto-field

DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'

# 使用现有表的扩展
AUTH_USER_MODEL = 'app.UserInfo'

posted @ 2022-06-11 14:35 我在春天等伱阅读(53) 评论(0) 收藏举报

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django - 开发个人博客 | 登录 | 验证码

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