文档章节

django验证码配置与使用

o
 osc_4nmshwhm
发布于 2018/08/07 10:15
字数 955
阅读 5
收藏 0

精选30+云产品,助力企业轻松上云!>>>

1.安装django-simple-captcha

pip install django-simple-captcha

 

2.配置settings.py

##加app列表
INSTALLED_APPS =[
# 校验码
'captcha',

]
## django_simple_captcha 验证码配置 # 格式 CAPTCHA_OUTPUT_FORMAT = u'%(text_field)s %(hidden_field)s %(image)s' # 字体倾斜度 CAPTCHA_LETTER_ROTATION = (-70, 35) # 噪点样式 CAPTCHA_NOISE_FUNCTIONS = ( # 'captcha.helpers.noise_null', # 没有样式 'captcha.helpers.noise_arcs', # 线 'captcha.helpers.noise_dots', # 点 ) # 图片大小 CAPTCHA_IMAGE_SIZE = (90, 25) CAPTCHA_BACKGROUND_COLOR = '#ffffff'
CAPTCHA_CHALLENGE_FUNCT = 'captcha.helpers.random_char_challenge' # 图片中的文字为随机英文字母,如 mdsh
# CAPTCHA_CHALLENGE_FUNCT = 'captcha.helpers.math_challenge' # 图片中的文字为数字表达式,如1+2=</span> CAPTCHA_LENGTH = 4 # 字符个数 CAPTCHA_TIMEOUT = 3 # 超时时间(minutes),默认为5分钟 # 是否测试模式,测试模式下输入任何字符都可通过 CAPTCHA_TEST_MODE = False # CAPTCHA_MATH_CHALLENGE_OPERATOR='math_challenge'

 3.迁移数据库

# 生成迁移文件
python manage.py makemigrations 
# 生成数据表
python manage.py migrate

  迁移成功后,数据库生成captcha_captchastore表,models.py如下

 

class CaptchaStore(models.Model):
    challenge = models.CharField(blank=False, max_length=32) # 验证码
    response = models.CharField(blank=False, max_length=32) # 验证码,回复时验证
    hashkey = models.CharField(blank=False, max_length=40, unique=True) # 唯一标识key
    expiration = models.DateTimeField(blank=False) # 过期时间

    def save(self, *args, **kwargs):
        self.response = self.response.lower()
        if not self.expiration:
            self.expiration = get_safe_now() + datetime.timedelta(minutes=int(captcha_settings.CAPTCHA_TIMEOUT))
        if not self.hashkey:
            key_ = (
                smart_text(randrange(0, MAX_RANDOM_KEY)) +
                smart_text(time.time()) +
                smart_text(self.challenge, errors='ignore') +
                smart_text(self.response, errors='ignore')
            ).encode('utf8')
            self.hashkey = hashlib.sha1(key_).hexdigest()
            del(key_)
        super(CaptchaStore, self).save(*args, **kwargs)

    def __unicode__(self):
        return self.challenge

    def remove_expired(cls):
        cls.objects.filter(expiration__lte=get_safe_now()).delete()
    remove_expired = classmethod(remove_expired)

    @classmethod
    def generate_key(cls):
        challenge, response = captcha_settings.get_challenge()() # 生成验证码
        store = cls.objects.create(challenge=challenge, response=response) # 验证码存库

        return store.hashkey

 

4.urls.py配置

urlpatterns += [
    url(r'^captcha/', include('captcha.urls')),
]

 5.forms.py

from django import forms
from maiziedu.models import UserProfile
from captcha.fields import CaptchaField
 
class RegisterForm(forms.Form):
    '''
    注册
    '''
    username = forms.EmailField(widget=forms.TextInput(
                  attrs={"class": "form-control", "placeholder": "请输入邮箱账号", "value": "", "required": "required",}), max_length=50,error_messages={"required": "用户名不能为空",}) password = forms.CharField(widget=forms.PasswordInput(
                  attrs={"class": "form-control", "placeholder": "请输入密码", "value": "", "required": "required",}), min_length=8, max_length=50,error_messages={"required": "密码不能为空",}) # 验证码 captcha = CaptchaField() def clean(self): # 验证码 try: captcha_x = self.cleaned_data['captcha'] except Exception as e: print 'except: '+ str(e) raise forms.ValidationError(u"验证码有误,请重新输入") # 用户名 try: username=self.cleaned_data['username'] except Exception as e: print 'except: '+ str(e) raise forms.ValidationError(u"注册账号需为邮箱格式") # 登录验证 is_email_exist = UserProfile.objects.filter(email=username).exists() is_username_exist = UserProfile.objects.filter(username=username).exists() if is_username_exist or is_email_exist: raise forms.ValidationError(u"该账号已被注册") # 密码 try: password=self.cleaned_data['password'] except Exception as e: print 'except: '+ str(e) raise forms.ValidationError(u"请输入至少8位密码"); return self.cleaned_data

 6.views.py

# 注册
# 改为ajax post 
def register(request):
    if request.method == 'POST':
        # 验证码
        print 'captcha_0: ' + request.POST.get('captcha_0')
        print 'captcha_1: ' + request.POST.get('captcha_1')
        try:
            reg_form = RegisterForm(request.POST)
        except Exception as e:
            print str(e)
            # 登录失败 返回错误提示    
            err = "注册失败,请重试"
            return result_response(request, err) 
 
        if reg_form.is_valid():
            print "register success"
            try:
                username = reg_form.cleaned_data['username']
                password = reg_form.cleaned_data['password']
                user = UserProfile.objects.create(username = username, email = username, 
                  password = make_password(password), is_active = True)
                user.save()
#         # 指定默认的登录验证方式 user.backend = 'django.contrib.auth.backends.ModelBackend' # 验证成功登录 auth.login(request, user) return result_response(request, "") except Exception as e: print str(e) setFormTips(reg_form, "注册失败,请重试") else: print "register failed" if request.POST.get('captcha_1') == "": setFormTips(reg_form, "验证码不能为空") # 登录失败 返回错误提示 err = getFormTips(reg_form) return result_response(request, err) else: reg_form = RegisterForm() return render(request, 'index.html', locals())

 7.html模板中显示验证码

第一种:
{{ reg_form.captcha }}
###这种方法对页面的适应性不太好,如上面模板变量生成html如下:
<input autocomplete="off" id="id_captcha_1" name="captcha_1" type="text">
<input id="id_captcha_0" name="captcha_0" type="hidden" value="e91228ab45df7338b59b64cb0eae1b60a48fd125">
<img src="/%2Fimage/e91228ab45df7338b59b64cb0eae1b60a48fd125/" alt="captcha" class="captcha">

第二种:
#views.py
from captcha.models import CaptchaStore
from captcha.helpers import captcha_image_url
hashkey = CaptchaStore.generate_key()
imgage_url = captcha_image_url(hashkey)
###这种方法给刷新验证码提供了方便,生成html如下:
<input type="text"  id="id_reg_captcha_1" name="captcha_1" class="form-control form-control-captcha fl" placeholder="请输入验证码">
<span class="v5-yzm fr"><a href="#" class="next-captcha"><img src="{{ imgage_url }}" class="captcha" alt="captcha">换一张</a></span>
<input id="id_reg_captcha_0" name="captcha_0" type="hidden" value="{{ hashkey }}">

 8.刷新验证码

前台js

// 刷新验证码
  $(".next-captcha").click(function(){
      $.getJSON("{% url 'refresh-captcha' %}", function(json) {
          // This should update your captcha image src and captcha hidden input
          // debugger;
          var status = json['status'];
          var new_cptch_key = json['new_cptch_key'];
          var new_cptch_image = json['new_cptch_image'];
          id_captcha_0 = $("#id_reg_captcha_0");
          img = $(".captcha");
          id_captcha_0.attr("value", new_cptch_key);
          img.attr("src", new_cptch_image);
      });
      
  });

 后台代码

# 刷新验证码
def refresh_captcha(request):
    to_json_response = dict()
    to_json_response['status'] = 1
    to_json_response['new_cptch_key'] = CaptchaStore.generate_key()
    to_json_response['new_cptch_image'] = captcha_image_url(to_json_response['new_cptch_key'])
    return HttpResponse(json.dumps(to_json_response), content_type='application/json')

 

o
粉丝 0
博文 500
码字总数 0
作品 0
私信 提问
加载中
请先登录后再评论。

暂无文章

深入浅出Zabbix 3.0 -- 第二章 Zabbix Web操作与定义

第二章 Zabbix Web操作与定义 本章介绍Zabbix 中一些基本概念的定义和web前端页面的操作,包括Zabbix中使用的一些术语的定义,Web页面中用户管理、主机和主机组的管理,以及监控项、模板、触...

osc_5zaxkz1e
23分钟前
14
0
深入浅出Zabbix 3.0 -- 第一章 Zabbix 安装与配置

第一章 Zabbix 安装与配置 1.1 Zabbix 介绍 Zabbix是一个企业级的开源监控软件,可以监控IT基础架构的可用性和应用的性能,为用户提供集中管理、分布式监控的一站式(all in one)监控解决方...

osc_nvkeo9cj
24分钟前
10
0
PHP 实现抽奖逻辑

public static function get_rand($proArr) { $result = ''; //概率数组的总概率精度 $proSum = array_sum($proArr); //概率数组循环 forea......

chenhongjiang
24分钟前
18
0
struts2 上传 下载

东方部落: http://11144439.blog.51cto.com struts中上传文件功能小测试。这里jar是 2.5 版本。 项目结构图 废话不多说,直接代码。 2. web.xml配置 <?xml version="1.0" encoding="UTF-8......

osc_1qix3fyb
26分钟前
31
0
SVN管理系统安装及其操作

SVN管理系统安装及操作 防伪码:学习永远不晚! 前言: SVN是Subversion的简称,是一个开放源代码的版本控制系统,相较于RCS、CVS,它采用了分支管理系统,它的设计目标就是取代CVS。互联网上...

osc_afifi2qt
27分钟前
24
0

没有更多内容

加载失败,请刷新页面

加载更多

返回顶部
顶部