django项目登录中使用图片验证码的实现方法

应用下创建untils文件夹放置封装图片验证码的函数

创建validCode.py文件定义验证码规则

import random
def get_random_color():
 return (random.randint(0, 255), random.randint(0, 255), random.randint(0, 255))
def get_valid_code_img(request):
 # 方式:
 from PIL import Image, ImageDraw, ImageFont
 from io import BytesIO
 import random
 img = Image.new("RGB", (270, 40), color=get_random_color())#生成一个宽270*高40的画布，背景颜色随机
 draw = ImageDraw.Draw(img)#进行绘画
 kumo_font = ImageFont.truetype("static/font/kumo.ttf", size=32)#字体 字体大小
 valid_code_str = ""
 for i in range(5):
 random_num = str(random.randint(0, 9))#0-9的随机数 9
 random_low_alpha = chr(random.randint(97, 122))#a 到 z 随机的一个小写字母 b
 random_upper_alpha = chr(random.randint(65, 90))#A 到 Z 随机的一个大写字母 Q
 random_char = random.choice([random_num, random_low_alpha, random_upper_alpha]) #2
 draw.text((i * 50 + 20, 5), random_char, get_random_color(), font=kumo_font) #往长方形上写字
 # 保存验证码字符串
 valid_code_str += random_char #85656
 width=270
 height=40
 for i in range(10):
 # draw.point([random.randint(0, width), random.randint(0, height)], fill=get_random_color())#画小点
 x = random.randint(0, width)
 y = random.randint(0, height)
 draw.arc((x, y, x + 4, y + 4), 0, 90, fill=get_random_color()) #小线段
 request.session["valid_code_str"] = valid_code_str
 f = BytesIO()
 img.save(f, "png") #png
 data = f.getvalue()
 return data

建路由

# 登录
path('login/', login.login,name='login'),
# 图片验证码
re_path('get_valid_code_img/', login.get_valid_code_img, name='get_valid_code_img'),

写后台方法

from blog.utils import validCode # 引入自定义的验证码
#页面返回方法
from django.shortcuts import render, HttpResponse, redirect
#哈希加密
from django.contrib.auth.hashers import make_password, check_password
#数据库
from blog.models import Article, Comment, Member, Praise, Web, Image
# 登陆
def login(request):
 res = {'status': None, 'info': None}
 if request.method == 'POST':
 valid_code = request.POST.get("valid_code")
 valid_code_str = request.session.get("valid_code_str")
 print(valid_code, valid_code_str)
 if valid_code.upper() == valid_code_str.upper():
 # 查询用户和密码是否正确
 username = request.POST.get('username')
 pwd = request.POST.get('pwd')
 username_obj = Member.objects.filter(member_name=username).first()
 if not username_obj:
 res['status'] = 3
 res['info'] = '用户名不存在'
 return HttpResponse(json.dumps(res))
 if check_password(pwd, username_obj.member_pwd):
 res['status'] = 1
 res['info'] = '登录成功'
 request.session['member_name'] = username
 request.session['member_id'] = Member.objects.filter(member_name=username).first().member_id
 response_new = HttpResponse(json.dumps(res)) # 把这个结果告诉给前台，ajax
 return response_new
 else:
 res['status'] = 0
 res['info'] = '帐号/密码错误'
 return HttpResponse(json.dumps(res))
 else:
 res['status'] = 2
 res['info'] = '验证码错误'
 return HttpResponse(json.dumps(res))
 return render(request, 'blog/login.html', locals())
 # 生成图片验证码
def get_valid_code_img(request):
 img_data = validCode.get_valid_code_img(request)
 return HttpResponse(img_data)

前端登录的表单

{#登陆的表单#}
<form action="{% url 'blog:login' %}" method="post" id="login">
 <input type="text" class="name" name="username" Placeholder="Username" required=""/>
 <input type="password" class="password" name="pwd" Placeholder="Password" required=""/>
 {% csrf_token %}
 <input type="text" name="valid_code" placeholder="验证码">
 <img width="270" height="36" id="valid_code_img" src="/blog/get_valid_code_img/" alt=""
 onclick="this.src='/blog/get_valid_code_img/?'+Math.random()">
 <div class="login-agileits-bottom">
 <h6><a href="javascript:;" type="button" id="onsubmit">登陆</a></h6>
 </div>
</form>
{#登陆的表单结束#}

前端提交登录表单的jquery

{# 登陆的jquery #}
$(document).ready(function () {
 $('#onsubmit').click(function () {
 $.post('/blog/login/', $('#login').serialize(), function (data) {
 if (data['status'] == 1) {
 layer.msg(data.info);
 location.href = "{% url 'index' %}";
 } else {
 layer.msg(data['info'])
 }
 }, 'json')
 })
})
{# 登陆的jquery结束 #}

页面效果

总结

以上所述是小编给大家介绍的django项目登录中使用图片验证码,希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！ 如果你觉得本文对你有帮助，欢迎转载，烦请注明出处，谢谢！