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随机数插件

2024-10-31 04:35:39   209人阅读

需要导入字体插件：

技术分享 
from PIL import Image,ImageDraw,ImageFont,ImageFilter
import random

def rd_check_code(width=120, height=30, char_length=5, font_file=‘kumo.ttf‘, font_size=28):
    code = []
    img = Image.new(mode=‘RGB‘, size=(width, height), color=(255, 255, 255))
    draw = ImageDraw.Draw(img, mode=‘RGB‘)
 
    def rndChar():
        """
        生成随机字母   
        :return:
        """
        return chr(random.randint(65, 90))
 
    def rndColor():
        """
        生成随机颜色
        :return:
        """
        return (random.randint(0, 255), random.randint(10, 255), random.randint(64, 255))
 
    # 写文字
    font = ImageFont.truetype(font_file, font_size)
    for i in range(char_length):
        char = rndChar()
        code.append(char)
        h = random.randint(0, 4)
        draw.text([i * width / char_length, h], char, font=font, fill=rndColor())
 
    # 写干扰点
    for i in range(40):
        draw.point([random.randint(0, width), random.randint(0, height)], fill=rndColor())
 
    # 写干扰圆圈
    for i in range(40):
        draw.point([random.randint(0, width), random.randint(0, height)], fill=rndColor())
        x = random.randint(0, width)
        y = random.randint(0, height)
        draw.arc((x, y, x + 4, y + 4), 0, 90, fill=rndColor())
 
    # 画干扰线
    for i in range(5):
        x1 = random.randint(0, width)
        y1 = random.randint(0, height)
        x2 = random.randint(0, width)
        y2 = random.randint(0, height)
 
        draw.line((x1, y1, x2, y2), fill=rndColor())
 
    img = img.filter(ImageFilter.EDGE_ENHANCE_MORE)
    return img,‘‘.join(code)
随机数插件
技术分享 
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href=http://www.mamicode.com/"/static/plugins/bootstrap-3.3.7-dist/css/bootstrap.css">
    <link rel="stylesheet" href=http://www.mamicode.com/"/static/plugins/font-awesome-4.7.0/css/font-awesome.css">
    <style>
        .login {
            width: 600px;
            margin: 0 auto;
            padding: 20px;
            margin-top: 80px;
        }
    </style>

</head>
<body>
<div class="login">
    <form class="form-horizontal" action="/login.html" method="POST">
        {% csrf_token %}
        <div class="form-group">
            <label class="col-sm-2 control-label">用户名</label>
            <div class="col-sm-10">
                <p>{{ obj.username }}{{ obj.errors.username.0 }}{{ value_error }}</p>
            </div>
        </div>
        <div class="form-group">
            <label class="col-sm-2 control-label">密码</label>
            <div class="col-sm-10">
                <p>{{ obj.password }}{{ obj.errors.password.0 }}{{ value_error }}</p>
            </div>
        </div>

        <div class="form-group">
            <label class="col-sm-2 control-label">验证码</label>
            <div class="col-sm-5">
                <p><input type="text" class="form-control"  placeholder="验证码" name="code">{{ code_error }}</p>
            </div>
            <div class="col-sm-5">
                <img style="width: 120px;height: 30px;" src=http://www.mamicode.com/"/check_code.html">
            </div>
        </div>
        <div class="form-group">
            <div class="col-sm-offset-2 col-sm-10">
                <input type="submit" class="btn btn-default" value=http://www.mamicode.com/"登录">
            </div>
        </div>
    </form>
</div>
</body>
</html>
登录使用随机数html
技术分享 
from django.shortcuts import render, HttpResponse,redirect
from app01 import models
from django.forms import Form
from django.forms import fields
from django.forms import widgets
import os
from django.core.exceptions import ValidationError


class LoginForm(Form):
    """
    登录表单
    """
    username = fields.CharField(
        max_length=18,
        min_length=3,
        required=True,
        widget=widgets.TextInput(attrs={‘class‘: ‘form-control‘,‘placeholder‘:‘用户名‘,‘name‘:"username"}),
        error_messages={
                ‘required‘: "用户名不能为空",
                ‘min_length‘: ‘太短了‘,
                ‘max_length‘: ‘太长了‘,
            }
    )
    password = fields.CharField(
        max_length=18,
        min_length=3,
        required=True,
        widget=widgets.PasswordInput(attrs={‘class‘: ‘form-control‘,‘placeholder‘:‘密码‘,‘name‘:"password"}),
        error_messages={
            ‘required‘: "密码不能为空",
            ‘min_length‘: ‘太短了‘,
            ‘max_length‘: ‘太长了‘,
        }
    )

def login(request):
    """
    登录
    :param request:
    :return:
    """
    if request.method == ‘GET‘:
        obj = LoginForm()
        return render(request, ‘login.html‘, {‘obj‘:obj})
    else:
        client_code = request.POST.get(‘code‘)
        server_code = request.session.get(‘code‘)
        obj = LoginForm(request.POST)
        if client_code != server_code:
            return render(request, ‘login.html‘, {‘code_error‘: ‘验证码错误‘, ‘obj‘:obj})
        elif obj.is_valid():
            if models.UserInfo.objects.filter(**obj.cleaned_data).first():
                request.session[‘username‘] = obj.cleaned_data[‘username‘]
                return redirect(‘/all/‘)
            else:
                return render(request, ‘login.html‘, {‘value_error‘: ‘用户名或者密码错误‘})
        return render(request, ‘login.html‘, {‘obj‘, obj})

def check_code(request):
    """
    验证码
    :param request:
    :return:
    """
    from io import BytesIO
    from utils.random_check_code import rd_check_code
    img, code = rd_check_code()
    stream = BytesIO()
    img.save(stream, ‘png‘)
    request.session[‘code‘] = code
    return HttpResponse(stream.getvalue())
视图函数

 

随机数插件


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