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第39章 Django调用验证码(调用验证码接口)

zazugpt 2024-09-11 11:31:29 编程文章 16 ℃ 0 评论

在保持不修改Django框架源代码的基准下,只好通过ajax调用captcha库返回验证码了。可惜vue.js不支持ajax功能,但好在有axios等第3方插件助力。

39.1 安装axios

要想使用axios插件,可以通过npm指令进行安装或直接引入cdn地址。注意:大部分操作系统本身是不支持npm指令,它可通过安装node.js获得。

使用 npm:

npm install axios

使用 cdn:

<script src="https://unpkg.com/axios/dist/axios.min.js"></script>

39.2 应用axios

不懂偷懒的程序猿不是好工程师,我喜欢偷懒,喜欢用cdn的方式。打开templates/ admin/login.html文件,在引入login.js的上一行,加入引入axios的代码。另外在表单(form.errors)错误提示信息的下方,加入验证码错误提示的代码;在输入密码框的下方,加入输入验证码的的代码,还有一个隐藏hashkey的hiddle,自己找找看。

{% load i18n static simpletags %}
{% get_current_language as LANGUAGE_CODE %}{% get_current_language_bidi as LANGUAGE_BIDI %}
<!DOCTYPE html>
<html lang="{{ LANGUAGE_CODE|default:"en-us" }}" {% if LANGUAGE_BIDI %}dir="rtl"{% endif %}>
<head>
    <meta charset="UTF-8">
    <meta name="renderer" content="webkit">
    <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
    <meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1">
    <title>{{ site_title }}-{% trans 'Log in' %}</title>
    <link rel="icon" href="{% static '/admin/simpleui-x/img/favicon.png' %}">

    {% if "SIMPLEUI_STATIC_OFFLINE"|get_config %}
        <link rel="stylesheet" href="{% static '/admin/simpleui-x/elementui/theme-chalk/index.css' %}">
        <link rel="stylesheet" href="{% static '/admin/simpleui-x/fontawesome-free-5.8.1-web/css/all.min.css' %}">
    {% else %}
        <link rel="stylesheet" href="https://unpkg.com/element-ui/lib/theme-chalk/index.css">
        <link rel="stylesheet" href="https://cdn.bootcss.com/font-awesome/5.8.1/css/all.min.css">
    {% endif %}


    <link rel="stylesheet" href="{% static '/admin/simpleui-x/css/login.css' %}?_=2.1">
    <style type="text/css">
        .bg {
            background: #f0f2f5;
            background-image: url('{% static '/admin/simpleui-x/img/bg.svg' %}');
            min-height: 100%;
            background-repeat: no-repeat;
            background-position: 50%;
            background-size: 100%;
            padding: 20px 0;
            position: relative;
        }
    </style>
    {% block head %}
        {# You can add code here. #}
    {% endblock %}
</head>
<body class="bg">

<div class="login-main">
    {% block logo %}
    <div class="logo">
        {% if "SIMPLEUI_LOGO"|get_config %}
            <img src="{{ "SIMPLEUI_LOGO"|get_config |safe }}">
        {% else %}
            <img src="{% static '/admin/simpleui-x/img/logo.png' %}">
        {% endif %}
    </div>
    {% endblock %}

    {% block header %}
    <div class="header">{{ site_header }}</div>
    {% endblock %}

    {% block errors %}

    {% if form.non_field_errors %}
        {% for error in form.non_field_errors %}
            <el-alert
                    title="{{ error }}"
                    type="error">
            </el-alert>
        {% endfor %}
    {% endif %}
    {% if form.errors and not form.non_field_errors %}
        <p class="errornote">
            {% if form.errors.items|length == 1 %}
                <el-alert title="{% trans "Please correct the error below." %}" type="error"></el-alert>
            {% else %}
                <el-alert title="{% trans "Please correct the errors below." %}" type="error"></el-alert>
            {% endif %}
        </p>
    {% endif %}
        <el-alert v-if="show_error" title="验证码错误" type="error"></el-alert>
    {% endblock %}
    {% block form %}
    <form class="simpleui-form" action="{{ app_path }}" method="post" id="login-form">
        {% csrf_token %}
        <div class="simpleui-input-inline">
            <el-input prefix-icon="fas fa-user" v-model="username" name="username"
                      placeholder="{% trans 'username' %}"></el-input>
        </div>
        <div class="simpleui-input-inline">
            <el-input prefix-icon="fas fa-lock" type="password" v-model="password" name="password"
                      placeholder="{% trans 'password' %}" show-password></el-input>
        </div>
         <div class="simpleui-input-inline">
            <el-input prefix-icon="fas el-icon-s-help" v-model="captcha" name="captcha"
                      placeholder="验证码">
                <img  slot="append"  :src="img_url" @click="refresh()"/>
            </el-input>
        </div>
        <div class="simpleui-input-inline login-btn">
            <el-button :icon="loading?'el-icon-loading':''" @click="login()" type="primary">{% trans 'Log in' %}</el-button>
        </div>
        <input id="hashkey" type="hidden" v-model="hashkey" name="hashkey"/>
        <input type="hidden" name="next" value="{{ next }}"/>
    </form>
    {% endblock %}
</div>



{% if "SIMPLEUI_STATIC_OFFLINE"|get_config %}
    <script type="text/javascript" src="{% static '/admin/simpleui-x/js/vue.min.js' %}"></script>
    <script type="text/javascript" src="{% static '/admin/simpleui-x/elementui/index.js' %}"></script>

{% else %}
    <script src="https://cdn.jsdelivr.net/npm/vue"></script>
    <script src="https://unpkg.com/element-ui/lib/index.js"></script>
{% endif %}
   <script src="https://unpkg.com/axios/dist/axios.min.js"></script>
   <script type="text/javascript" src="{% static '/admin/simpleui-x/js/login.js' %}?_=2.3"></script>

{% if 'SIMPLEUI_LOGIN_PARTICLES'|get_config != False %}
<style type="text/css">
    #particles-js{
        position: fixed;
        top: 0px;
        left: 0px;
        right: 0px;
        bottom: 0px;
        z-index: -1;
    }
    </style>
<!-- particles.js container -->
<div id="particles-js"></div>
<script type="text/javascript" src="{% static '/admin/simpleui-x/particles/particles.js' %}"></script>
<script type="text/javascript" src="{% static '/admin/simpleui-x/particles/app.js' %}"></script>
{% endif %}
</body>
</html>

39.3 调用验证码

在模板文件上的添油加醋,只是对验证码进行一番造势而已,如果没有真材实料,最终火不过3天,活不到第二集。我说的是什么,你懂得。打开static/simpleui-x/js/login.js,调整内容如下。

if (parent.callback) {
    //如果是在子框架内就把首页刷新
    parent.callback();
}
new Vue({
    el: '.login-main',
    data: {
        username: '',
        password: '',
        captcha:'',
        hashkey:'',
        img_url:'',
        show_error: false,
        loading: false
    },

    created: function () {
        this.get_captcha();
    },

methods: {
refresh:function () {
       this.get_captcha();
    },

        login: function () {
            hash_key = this.hashkey;
            captcha_str = this.captcha;
            this.loading = true;
            this.show_error = false;
            var that = this;
            axios.get('/special/check_captcha/', {
                    params: {
                        hash_key: hash_key,
                        captcha_str: captcha_str
                    }
                }
            ).then(function (response) {
                    var json = JSON.parse(JSON.stringify(response.data));
                    var result =  json['result'];
                    if (result) {
                        document.getElementById('login-form').submit();
                    }
                    else {
                        that.loading = false;
                        that.show_error = true;
                    }
                })
        },

       get_captcha: function () {
            var that=this;
            axios.get('/special/captcha/')
            .then(function (response) {
                var result = JSON.parse(JSON.stringify(response.data));
                that.hashkey = result['hashkey'];
                that.img_url = result['image_url'];
            })
        } ,
    }
})

辛苦了好久,我也想早点见到效果(图),有效果才有成就,有效果,才有说服力。

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