Route::prefix('admin')->group(function () {
    Route::get('/user/{id}', function ($id) {
        return $id;
    });
});

Route::group(['prefix' => 'admin'], function () {
    Route::get('/user/{id}', function ($id) {
        return $id;
    });
});

两个写法一致、都是路径

​​http://127.0.0.1:8000/api/admin/user/1234​​

Laravel 路由前缀_elementui