这一次我们讲POST请求
post请求和get请求的定义方式一样，只不过在laravel中为了安全，post请求会有csrf限制
老规矩，上代码
<?php
namespace App\Http\Controllers\Web;
use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
class IndexController extends Controller
{
//
public function index()
{
return view('welcome');
}
public function add(Request $request)
{
return $request->all();
}
}
路由
<?php
Route::get('/', 'IndexController@index');
Route::post('/add', 'IndexController@add');
我们定义了一个post请求，在命令行执行，起一个web服务
php artisan serve
我们用post进行模拟post请求
post请求测试
服务端返回419页面，遇到这样的情况怎么处理呢？
1、解除当前路由的限制
修改learnLaravel\app\Http\Middleware\VerifyCsrfToken.php文件中的代码，将路由/add加入到$except数组中，表示这个路由不受csrf防护
<?php
namespace App\Http\Middleware;
use Illuminate\Foundation\Http\Middleware\VerifyCsrfToken as Middleware;
class VerifyCsrfToken extends Middleware
{
/**
* Indicates whether the XSRF-TOKEN cookie should be set on the response.
*
* @var bool
*/
protected $addHttpCookie = true;
/**
* The URIs that should be excluded from CSRF verification.
*
* @var array
*/
protected $except = [
//
'/add'
];
}
我们再次用postman模拟post请求，结果如下图
image.png
2、增加token验证
新建页面，内容如下
<!DOCTYPE html>
<html lang="{{ str_replace('_', '-', app()->getLocale()) }}">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Laravel</title>
<!-- Fonts -->
<link href="https://fonts.googleapis.com/css?family=Nunito:200,600" rel="stylesheet">
<!-- Styles -->
</head>
<body>
<form action="{{url('/add')}}" method="post">
@csrf
<input type="submit">
</form>
</body>
</html>
查看页面源码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Laravel</title>
<!-- Fonts -->
<link href="https://fonts.googleapis.com/css?family=Nunito:200,600" rel="stylesheet">
<!-- Styles -->
</head>
<body>
<form action="http://127.0.0.1:8000/add" method="post">
<input type="hidden" name="_token" value="F8eL5FrA5scHvqR0SAyQoaNEbL1bLLNyqetjNYcJ"> <input type="submit">
</form>
</body>
</html>
我们发现@csrf被转化成了
<input type="hidden" name="_token" value="F8eL5FrA5scHvqR0SAyQoaNEbL1bLLNyqetjNYcJ">
我们再次修改F:\web\learnLaravel\app\Http\Middleware\VerifyCsrfToken.php中的文件移除$except数组中的/add
<?php
namespace App\Http\Middleware;
use Illuminate\Foundation\Http\Middleware\VerifyCsrfToken as Middleware;
class VerifyCsrfToken extends Middleware
{
/**
* Indicates whether the XSRF-TOKEN cookie should be set on the response.
*
* @var bool
*/
protected $addHttpCookie = true;
/**
* The URIs that should be excluded from CSRF verification.
*
* @var array
*/
protected $except = [
//
];
}
打开我们的页面点击提交表单，数据正常提交，419限制也没有了，至此我们post请求常见问题讲解完毕。
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