Django之验证码

一、自己生成验证码

二、极验科技互动验证码

使用前步骤：下载官网文件——pip install geetest——引入其封装的js模块

代码分为三段：生成验证码——显示验证码——验证验证码、

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

 # Create your views here.

 #使用极验滑动验证码的登陆
 def login(request):
     if request.method == "POST":
         ")
         #初始化一个返回给ajax的字典
         ret = {"status":0,"msg":""}
         #从提交的数据中获取用户名和密码
         username = request.POST.get("username")
         password = request.POST.get("password")
         #获取验证码相关数据
         gt = GeetestLib(pc_geetest_id, pc_geetest_key)
         challenge = request.POST.get(gt.FN_CHALLENGE, '')
         validate = request.POST.get(gt.FN_VALIDATE, '')
         seccode = request.POST.get(gt.FN_SECCODE, '')
         status = request.session[gt.GT_STATUS_SESSION_KEY]
         user_id = request.session["user_id"]

         if status:
             result = gt.success_validate(challenge, validate, seccode, user_id)
         else:
             result = gt.failback_validate(challenge, validate, seccode)

         #如果result有值，则验证成功,利用auth做验证
         if result:
             user = auth.authenticate(username=username,password=password)
             if user:
                 #如果用户名密码正确
                 auth.login(request,user)
                 ret["msg"] = "/index/"
             else:
                 ret["status"] = 1
                 ret["msg"] = "用户名密码错误"
         else:
             #如果验证吗错误
             ret["status"] = 1
             ret["msg"] = "验证码错误"
         return JsonResponse(ret)
     return render(request,"login.html",locals())

 #请在官网申请ID使用，示例ID不可使用
 pc_geetest_id = "b46d1900d0a894591916ea94ea91bd2c"
 pc_geetest_key = "36fc3fe98530eea08dfc6ce76e3d24c4"
 #获取滑动验证码
 def get_geetest(request):
     user_id = 'test'
     gt = GeetestLib(pc_geetest_id, pc_geetest_key)
     status = gt.pre_process(user_id)
     request.session[gt.GT_STATUS_SESSION_KEY] = status
     request.session["user_id"] = user_id
     response_str = gt.get_response_str()
     return HttpResponse(response_str)

 def index(request):
     return render(request,"index.html",locals())

 <!DOCTYPE html>
 <html lang="en">
 <head>
     <meta charset="UTF-8">
     <title>Title</title>
     <link rel="stylesheet" href="/static/bootstrap/css/bootstrap.min.css">
     <link rel="stylesheet" href="/static/css/mystyle.css">
 </head>
 <body>

 <div class="container">
     <div class="row">
         <form class="form-horizontal col-md-6 col-md-offset-3 login-form">
             {% csrf_token %}
             <div class="form-group">
                 <label for="username" class="col-sm-2 control-label">用户名</label>
                 <div class="col-sm-10">
                     <input type="text" class="form-control" id="username" name="username" placeholder="用户名">
                 </div>
             </div>
             <div class="form-group">
                 <label for="password" class="col-sm-2 control-label">密码</label>
                 <div class="col-sm-10">
                     <input type="password" class="form-control" id="password" name="password" placeholder="密码">
                 </div>
             </div>
             <div class="form-group">
                 <div id="popup-captcha"></div>
             </div>
             <div class="form-group">
                 <div class="col-sm-offset-2 col-sm-10">
                     <button type="button" class="btn btn-default" id="login-button">登录</button>
                     <span class="login-error"></span>
                 </div>
             </div>
         </form>
     </div>
 </div>

 <script src="/static/jquery.js"></script>
 <script src="/static/bootstrap/js/bootstrap.min.js"></script>
 <!-- 引入封装了failback的接口--initGeetest -->
 <script src="http://static.geetest.com/static/tools/gt.js"></script>
 <script>
     //发送数据
     var handlerPopup = function (captchaObj) {
     // 成功的回调
     captchaObj.onSuccess(function () {
         var validate = captchaObj.getValidate();
         var username = $("#username").val();
         var password = $("#password").val();
         $.ajax({
             url: "/login/", // 进行二次验证
             type: "post",
             dataType: "json",
             data: {
                 username: username,
                 password: password,
                 csrfmiddlewaretoken: $("[name='csrfmiddlewaretoken']").val(),
                 geetest_challenge: validate.geetest_challenge,
                 geetest_validate: validate.geetest_validate,
                 geetest_seccode: validate.geetest_seccode
             },
             success: function (data) {
                 if(data.status){
                     $(".login-error").text(data.msg);
                 }else{
                     location.href = data.msg;
                 }
             }
         });
     });

     //绑定事件显示滑动验证码
     $("#login-button").click(function () {
         captchaObj.show();
     });
     // 将验证码加到id为captcha的元素里
     captchaObj.appendTo("#popup-captcha");
     // 更多接口参考：http://www.geetest.com/install/sections/idx-client-sdk.html
 };
     // 验证开始需要向网站主后台获取id，challenge，success（是否启用failback）
     $.ajax({
         url: "/pc-geetest/register?t=" + (new Date()).getTime(), // 加随机数防止缓存
         type: "get",
         dataType: "json",
         success: function (data) {
             // 使用initGeetest接口
             // 参数1：配置参数
             // 参数2：回调，回调的第一个参数验证码对象，之后可以使用它做appendTo之类的事件
             initGeetest({
                 gt: data.gt,
                 challenge: data.challenge,
                 product: "popup", // 产品形式，包括：float，embed，popup。注意只对PC版验证码有效
                 offline: !data.success // 表示用户后台检测极验服务器是否宕机，一般不需要关注
                 // 更多配置参数请参见：http://www.geetest.com/install/sections/idx-client-sdk.html#config
             }, handlerPopup);
         }
     });

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