search
HomePHP FrameworkLaravelDetailed explanation of Laravel API allowing cross-domain access

下面由Laravel框架教程栏目给大家介绍Laravel API允许跨域访问,希望对需要的朋友有所帮助!

服务器A请求服务器B的接口,那么一般会出现跨域问题。全解跨域请求处理办法
XMLHttpRequest cannot load http://api.console.vms3.com/api/user. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8080' istherefore not allowed access.

意思就是服务器响应不允许跨域访问.

那我们就需要让服务器支持跨域访问, 也就是在响应头部中添加

"'Access-Control-Allow-Origin: *' "

第一步: 创建中间件

创建 `app/Http/Middleware/AccessControlAllowOrigin.php` middleware 把 'Access-Control-Allow-Origin: *' 写入头部.
app/Http/Middleware/AccessControlAllowOrigin.php
<?php

namespace App\Http\Middleware;

use Closure;
use Illuminate\Support\Facades\Auth;

class AccessControlAllowOrigin
{
    /**
     *
     * Handle an incoming request.
     *
     * @param  \Illuminate\Http\Request  $request
     * @param  \Closure  $next
     * @return mixed
     */
    public function handle($request, Closure $next)
    {
        header(&#39;Access-Control-Allow-Origin: *&#39;);
        header("Access-Control-Allow-Credentials: true");
        header("Access-Control-Allow-Methods: *");
        header("Access-Control-Allow-Headers: Content-Type,Access-Token");
        header("Access-Control-Expose-Headers: *");

        return $next($request);
    }

}

第二步: 注册路由

注册这个 middlewarekernel 中.
分别在 protected $middleware 数组中和 protected $routeMiddleware 数组中
添加我们刚才创建的那个文件class名, 使用 cors 这个别名.

第三步: 设置中间件保护接口

然后在设置它保护 api , 就是$middlewareGroups[&#39;api&#39;] 的数组中添加它的别名, 本文中是 &#39;cors&#39;
app/Http/Kernel.php

<?php

namespace App\Http;

use Illuminate\Foundation\Http\Kernel as HttpKernel;

class Kernel extends HttpKernel
{
    /**
     * The application&#39;s global HTTP middleware stack.
     *
     * These middleware are run during every request to your application.
     *
     * @var array
     */
    protected $middleware = [
        \Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode::class,
        \Illuminate\Foundation\Http\Middleware\ValidatePostSize::class,
        \App\Http\Middleware\TrimStrings::class,
        \Illuminate\Foundation\Http\Middleware\ConvertEmptyStringsToNull::class,
        \App\Http\Middleware\AccessControlAllowOrigin::class,
    ];

    /**
     * The application&#39;s route middleware groups.
     *
     * @var array
     */
    protected $middlewareGroups = [
        &#39;web&#39; => [
            \App\Http\Middleware\EncryptCookies::class,
            \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::class,
            \Illuminate\Session\Middleware\StartSession::class,
            // \Illuminate\Session\Middleware\AuthenticateSession::class,
            \Illuminate\View\Middleware\ShareErrorsFromSession::class,
            \App\Http\Middleware\VerifyCsrfToken::class,
            \Illuminate\Routing\Middleware\SubstituteBindings::class,
        ],

        'api' => [
            'throttle:60,1',
            'bindings',
            'cors'
        ],
    ];

    /**
     * The application's route middleware.
     *
     * These middleware may be assigned to groups or used inpidually.
     *
     * @var array
     */
    protected $routeMiddleware = [
        'auth' => \Illuminate\Auth\Middleware\Authenticate::class,
        'auth.basic' => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::class,
        'bindings' => \Illuminate\Routing\Middleware\SubstituteBindings::class,
        'can' => \Illuminate\Auth\Middleware\Authorize::class,
        'guest' => \App\Http\Middleware\RedirectIfAuthenticated::class,
        'throttle' => \Illuminate\Routing\Middleware\ThrottleRequests::class,
        'cors' => \App\Http\Middleware\AccessControlAllowOrigin::class,
    ];
}

第四步:在路由中添加路由

Route::middleware('cors')->group(function () {
    //
});

The above is the detailed content of Detailed explanation of Laravel API allowing cross-domain access. For more information, please follow other related articles on the PHP Chinese website!

Statement
This article is reproduced at:cnblogs. If there is any infringement, please contact admin@php.cn delete
Laravel's Impact: Simplifying Web DevelopmentLaravel's Impact: Simplifying Web DevelopmentApr 21, 2025 am 12:18 AM

Laravel stands out by simplifying the web development process and delivering powerful features. Its advantages include: 1) concise syntax and powerful ORM system, 2) efficient routing and authentication system, 3) rich third-party library support, allowing developers to focus on writing elegant code and improve development efficiency.

Laravel: Frontend or Backend? Clarifying the Framework's RoleLaravel: Frontend or Backend? Clarifying the Framework's RoleApr 21, 2025 am 12:17 AM

Laravelispredominantlyabackendframework,designedforserver-sidelogic,databasemanagement,andAPIdevelopment,thoughitalsosupportsfrontenddevelopmentwithBladetemplates.

Laravel vs. Python: Exploring Performance and ScalabilityLaravel vs. Python: Exploring Performance and ScalabilityApr 21, 2025 am 12:16 AM

Laravel and Python have their own advantages and disadvantages in terms of performance and scalability. Laravel improves performance through asynchronous processing and queueing systems, but due to PHP limitations, there may be bottlenecks when high concurrency is present; Python performs well with the asynchronous framework and a powerful library ecosystem, but is affected by GIL in a multi-threaded environment.

Laravel vs. Python (with Frameworks): A Comparative AnalysisLaravel vs. Python (with Frameworks): A Comparative AnalysisApr 21, 2025 am 12:15 AM

Laravel is suitable for projects that teams are familiar with PHP and require rich features, while Python frameworks depend on project requirements. 1.Laravel provides elegant syntax and rich features, suitable for projects that require rapid development and flexibility. 2. Django is suitable for complex applications because of its "battery inclusion" concept. 3.Flask is suitable for fast prototypes and small projects, providing great flexibility.

Frontend with Laravel: Exploring the PossibilitiesFrontend with Laravel: Exploring the PossibilitiesApr 20, 2025 am 12:19 AM

Laravel can be used for front-end development. 1) Use the Blade template engine to generate HTML. 2) Integrate Vite to manage front-end resources. 3) Build SPA, PWA or static website. 4) Combine routing, middleware and EloquentORM to create a complete web application.

PHP and Laravel: Building Server-Side ApplicationsPHP and Laravel: Building Server-Side ApplicationsApr 20, 2025 am 12:17 AM

PHP and Laravel can be used to build efficient server-side applications. 1.PHP is an open source scripting language suitable for web development. 2.Laravel provides routing, controller, EloquentORM, Blade template engine and other functions to simplify development. 3. Improve application performance and security through caching, code optimization and security measures. 4. Test and deployment strategies to ensure stable operation of applications.

Laravel vs. Python: The Learning Curves and Ease of UseLaravel vs. Python: The Learning Curves and Ease of UseApr 20, 2025 am 12:17 AM

Laravel and Python have their own advantages and disadvantages in terms of learning curve and ease of use. Laravel is suitable for rapid development of web applications. The learning curve is relatively flat, but it takes time to master advanced functions. Python's grammar is concise and the learning curve is flat, but dynamic type systems need to be cautious.

Laravel's Strengths: Backend DevelopmentLaravel's Strengths: Backend DevelopmentApr 20, 2025 am 12:16 AM

Laravel's advantages in back-end development include: 1) elegant syntax and EloquentORM simplify the development process; 2) rich ecosystem and active community support; 3) improved development efficiency and code quality. Laravel's design allows developers to develop more efficiently and improve code quality through its powerful features and tools.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

mPDF

mPDF

mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

PhpStorm Mac version

PhpStorm Mac version

The latest (2018.2.1) professional PHP integrated development tool

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor