说起验证码，尽管用户反感但还是挺需要的，以前的项目用自己写的基于GeeTest（极验）的 Laravel + Vue 组件，这次也考虑过reCaptcha的国内版，不过实在担心改版、收费及其它原因，所以自己用Laravel做一个吧。
这个包默认是用于SPA这种无状态下的响应，所以没有依赖Session，使用Session可以依照IStorage进行扩展，记得middleware使用web。
内置两个路由，一个获取验证码图像，返回一个base64的代码和一个身份标识；另一个进行验证。
提供简单的字符展示和数学计算两种，每种都支持Ascii（阿拉伯数字）和非Ascii（如中文），样子如下：
axios
.get('your_domain/api/v1/captcha/image')
.then(response => (this.captcha = response.data))
返回
{
"image": "data:image/png;base64,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",
"validation": "f9cc27ee094dbb5024da2e9a103b3642"
}
axios
.post('your_domain/api/v1/captcha/image', post_data)
.then(response => (this.validation = response.data))
响应如下
{
"message": "The captcha code input valid, please try again",
"status": 403
}
使用配置文件可以方便的修改路由
'router_api' => '/api/v1/captcha/image',
源码中有比较细致的注释
php artisan vendor:publish --tag=captcha
<?php
return [
/*
|--------------------------------------------------------------------------
| Captcha router name
|--------------------------------------------------------------------------
|
*/
'router' => '/api/v1/captcha/image',
/*
|--------------------------------------------------------------------------
| Specify captcha generator.
|--------------------------------------------------------------------------
|
*/
'generator' => \Tao\Captcha\Core\Generator\SimpleGenerator::class,
/*
|--------------------------------------------------------------------------
| Specify code generator.
|--------------------------------------------------------------------------
|
*/
'code' => \Tao\Captcha\Core\Code\CalculatorCode::class,
'storage' => \Tao\Captcha\Core\Storage\CacheStorage::class,
/*
|--------------------------------------------------------------------------
| Number type
|--------------------------------------------------------------------------
| ASCII number / Not ASCII number
*/
// 'codeType' => [
// 'chars' => '一二三四五六七八九',
// 'isAscii' => false,
// 'operations' => '加减乘' // if you use calculator-style, you need to add this (mapped to 'plus', 'minus', 'multiply')
// ],
'codeType' => [
'chars' => '1234567890',
'isAscii' => true,
'operations' => '+-*' // if you use calculator-style, you need to add this (mapped to 'plus', 'minus', 'multiply')
],
/*
|--------------------------------------------------------------------------
| Font
|--------------------------------------------------------------------------
|
*/
'font' => base_path('vendor/tao/captcha/src/resources/fonts/ximai.ttf'),
/*
|--------------------------------------------------------------------------
| Font size
|--------------------------------------------------------------------------
| Font size in pixels.
|
*/
'fontSize' => 26,
/*
|--------------------------------------------------------------------------
| Letter spacing
|--------------------------------------------------------------------------
| Spacing between letters in pixels.
|
*/
'letterSpacing' => 15,
/*
|--------------------------------------------------------------------------
| Code Length
|--------------------------------------------------------------------------
*/
'length' => [4, 5],
/*
|--------------------------------------------------------------------------
| Image Size
|--------------------------------------------------------------------------
| Captcha image size can be controlled by setting the width
| and height properties.
|
|
*/
'width' => 180,
'height' => 50,
/*
|--------------------------------------------------------------------------
| Background Captcha
|--------------------------------------------------------------------------
| You can specify an array or string.
|
*/
'background' => ['f9f4e0', 'd3dee0', 'f6f7f9'],
/*
|--------------------------------------------------------------------------
| Colors characters
|--------------------------------------------------------------------------
| You can specify an array or string.
|
*/
'colors' => ['b8364f', '0390aa', '1b6aa8'],
/*
|--------------------------------------------------------------------------
| Scratches
|--------------------------------------------------------------------------
| The number of scratches displayed in the Captcha.
|
*/
'scratches' => [3, 3],
];
├── src
│ ├── CaptchaServiceProvider.php
│ ├── Controllers
│ │ └── CaptchaController.php
│ ├── Core
│ │ ├── Captcha.php
│ │ ├── Code
│ │ │ ├── AbstractCode.php
│ │ │ ├── CalculatorCode.php
│ │ │ └── SimpleCode.php
│ │ ├── Generator
│ │ │ ├── AbstractGenerator.php
│ │ │ ├── IGenerator.php
│ │ │ └── SimpleGenerator.php
│ │ ├── Helper.php
│ │ └── Storage
│ │ ├── CacheStorage.php
│ │ └── IStorage.php
│ ├── Facades
│ │ └── Captcha.php
│ ├── resources
│ │ ├── fonts
│ │ │ └── ximai.ttf
│ │ └── lang
│ │ ├── en
│ │ │ └── message.php
│ │ └── zh-CN
│ │ └── message.php
│ └── routes
│ └── api.php
├── tests
│ └── CaptchaTest.php