服务器A要求服务器B的接口,那末平常会涌现跨域题目。
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.
意义就是服务器相应不允许跨域接见.
那我们就须要让服务器支撑跨域接见, 也就是在相应头部中增加
'Access-Control-Allow-Origin: *'
第一步: 建立中间件
建立 `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('Access-Control-Allow-Origin: *'); 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 middleware
到 kernel
中.
分别在 protected $middleware
数组中和 protected $routeMiddleware
数组中
增加我们适才建立的谁人文件class
名, 运用 cors
这个别号.
第三步: 设置中间件庇护接口
然后在设置它庇护 api , 就是$middlewareGroups['api']
的数组中增加它的别号, 本文中是 'cors'
app/Http/Kernel.php
<?php namespace App\Http; use Illuminate\Foundation\Http\Kernel as HttpKernel; class Kernel extends HttpKernel { /** * The application'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's route middleware groups. * * @var array */ protected $middlewareGroups = [ 'web' => [ \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:在路由中增加路由
Route::middleware('cors')->group(function () { // });
以上就是Laravel API跨域接见的完成步骤的细致内容,更多请关注ki4网别的相干文章!