python通过captcha实现验证码的功能

╰半橙微兮° 2022-10-02 10:58 252阅读 0赞

1、安装django-simple-captcha

pip install django-simple-captcha

2、打开settings.py在INSTALLED\_APPS中配置

INSTALLED_APPS = [
    	'captcha',
    ]

3、打开urls.py在urlpatterns中配置url

urlpatterns = [
        path('captcha',include('captcha.urls')),
    ]

4、迁移同步，生成captcha所依赖的表

python manage.py makemigrations
    python manage.py migrate

![在这里插入图片描述][20190618140537690.png]  
5、将captcha字段在form类当中进行设置

from django import forms
    from captcha.fields import CaptchaField
    class UserRegisterForm(forms.Form):
        email = forms.EmailField(required=True)
        password = forms.CharField(required=True,min_length=3,max_length=15,error_messages={
            'required':'密码必须填写',
            'min_length':'密码不得小于3位',
            'max_length':'密码不得大于15位'
        })
        captcha = CaptchaField(error_messages={
            'invalid': '验证码错误'
        })

6、后台逻辑里面，在get请求中实例化form,将form对象返回到页面

def user_register(request):
    	if request.method == 'GET':
    		user_register_form = UserRegisterForm()
    		return render(request,'register.html',{
    			'user_register_form':user_register_form
    		})

7、在前端页面上通过\{ \{ user\_register\_form.captcha \}\}获取验证码  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MDk3MDk4Nw_size_16_color_FFFFFF_t_70]

[20190618140537690.png]: /images/20220112/d9507dadeff94f7aaf30839dc50b3399.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80MDk3MDk4Nw_size_16_color_FFFFFF_t_70]: /images/20220112/038c5bdaddd3487a891b362a0810c2d0.png