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laravel中间件都有哪些

中间件有:1、Authenticate;2、CheckForMaintenanceMode;3、EncryptCookies;4、RedirectIfAuthenticated;5、TrimStrings;6、TrustProxies等等。

laravel中间件都有哪些

本教程操作环境:windows7系统、Laravel6版、Dell G3电脑。

Laravel自带的中间件

Laravel 自带了一些中间件,包括身份验证、CSRF 保护等。Laravel 具体启用了哪些中间件,可通过 appHttpKernel.php 文件查看。对于以 AppHttpMiddleware 开头的中间件(位于 app/Http/Middleware 目录)是我们可以对其行为进行定制的中间件。

Authenticate 中间件

源文件:appHttpMiddlewareHttpMiddlewareAuthenticate.php

<?php namespace AppHttpMiddleware; use IlluminateAuthMiddlewareAuthenticate as Middleware; class Authenticate extends Middleware {     /**      * Get the path the user should be redirected to when they are not authenticated.      *      * @param  IlluminateHttpRequest  $request      * @return string      */     protected function redirectTo($request)     {         if (! $request->expectsJson()) {             return route('login');         }     } }

作用:

用户身份验证。可修改 redirectTo 方法,返回未经身份验证的用户应该重定向到的路径。

CheckForMaintenanceMode 中间件

源文件 :appHttpMiddlewareCheckForMaintenanceMode.php

<?php namespace AppHttpMiddleware; use IlluminateFoundationHttpMiddlewareCheckForMaintenanceMode as Middleware; class CheckForMaintenanceMode extends Middleware {     /**      * The URIs that should be reachable while maintenance mode is enabled.      *      * @var array      */     protected $except = [         //     ]; }

作用:

检测项目是否处于 维护模式。可通过 $except 数组属性设置在维护模式下仍能访问的网址。

EncryptCookies 中间件

源文件:appHttpMiddlewareEncryptCookies.php

<?php namespace AppHttpMiddleware; use IlluminateCookieMiddlewareEncryptCookies as Middleware; class EncryptCookies extends Middleware {     /**      * The names of the cookies that should not be encrypted.      *      * @var array      */     protected $except = [         //     ]; }

作用

对 Cookie 进行加解密处理与验证。可通过 $except 数组属性设置不做加密处理的 cookie。

RedirectIfAuthenticated 中间件

源文件:appHttpMiddlewareRedirectIfAuthenticated.php

<?php namespace AppHttpMiddleware; use Closure; use IlluminateSupportFacadesAuth; class RedirectIfAuthenticated {     /**      * Handle an incoming request.      *      * @param  IlluminateHttpRequest  $request      * @param  Closure  $next      * @param  string|null  $guard      * @return mixed      */     public function handle($request, Closure $next, $guard = null)     {         if (Auth::guard($guard)->check()) {             return redirect('/home');         }         return $next($request);     } }

作用:

当请求页是 注册、登录、忘记密码 时,检测用户是否已经登录,如果已经登录,那么就重定向到首页,如果没有就打开相应界面。可以在 handle 方法中定制重定向到的路径。

TrimStrings 中间件

源文件:appHttpMiddlewareTrimStrings.php

<?php namespace AppHttpMiddleware; use IlluminateFoundationHttpMiddlewareTrimStrings as Middleware; class TrimStrings extends Middleware {     /**      * The names of the attributes that should not be trimmed.      *      * @var array      */     protected $except = [         'password',         'password_confirmation',     ]; }

作用:

对请求参数内容进行 前后空白字符清理。可通过 $except 数组属性设置不做处理的参数。

TrustProxies 中间件

源文件:appHttpMiddlewareTrustProxies.php

<?php namespace AppHttpMiddleware; use IlluminateHttpRequest; use FideloperProxyTrustProxies as Middleware; class TrustProxies extends Middleware {     /**      * The trusted proxies for this application.      *      * @var array|string      */     protected $proxies;     /**      * The headers that should be used to detect proxies.      *      * @var int      */     protected $headers = Request::HEADER_X_FORWARDED_ALL; }

作用:

配置可信代理。可通过 $proxies 属性设置可信代理列表,$headers 属性设置用来检测代理的 HTTP 头字段。

VerifyCsrfToken 中间件

源文件:appHttpMiddlewareVerifyCsrfToken.php

<?php namespace AppHttpMiddleware; use IlluminateFoundationHttpMiddlewareVerifyCsrfToken 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 = [         //     ]; }

作用:

验证请求里的令牌是否与存储在会话中令牌匹配。可通过 $except 数组属性设置不做 CSRF 验证的网址。

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