如何在ThinkPHP中实现请求（Request）参数过滤？

use think\Request;
use think\middleware\FilterRequest;

// 在app\http\middleware.php中添加如下代码
return [
    // ...其他中间件配置
    FilterRequest::class => function (Request $request) {
        $data = $request->param();
        foreach ($data as $key => $value) {
            $data[$key] = htmlspecialchars(strip_tags($value));
        }
        $request->withInput($data);
    },
];

// app\validate\User.php
namespace app\validate;

use think\Validate;

class User extends Validate
{
    protected $rule = [
        'username'  => 'require|max:25',
        'password'  => 'require|min:6',
        'email'     => 'email',
    ];

    protected $message = [
        'username.require' => '用户名必须',
        'username.max'     => '用户名最多不能超过25个字符',
        'password.require' => '密码必须',
        'password.min'     => '密码最少不能少于6个字符',
        'email'            => '邮箱格式错误',
    ];
}

// app\controller\User.php
namespace app\controller;

use app\validate\User as UserValidate;

class User
{
    public function register()
    {
        $validate = new UserValidate();
        $data = input('post.');
        if (!$validate->check($data)) {
            return json(['code' => 0, 'msg' => $validate->getError()]);
        }
        // 验证通过，继续处理注册逻辑
    }
}

// app\middleware\RequestFilter.php
namespace app\middleware;

use think\Request;

class RequestFilter
{
    public function handle(Request $request, \Closure $next)
    {
        $data = $request->param();
        foreach ($data as $key => $value) {
            $data[$key] = htmlspecialchars(strip_tags($value));
        }
        $request->withInput($data);
        return $next($request);
    }
}

return [
    // ...其他中间件配置
    app\middleware\RequestFilter::class => 'app\middleware\RequestFilter',
];

// route/app.php
use think\facade\Route;

Route::group('user', function () {
    Route::post('register', 'User/register');
})->middleware(app\middleware\RequestFilter::class);