Laravel 中配置公共页面访问权限：避免根路径重定向到登录页

// site.php
Route::get('/', 'HomeController@index')->name('home');
Route::get('/read/{id}', 'HomeController@read')->name('read');
Route::post('/read/{id}', 'HomeController@read')->name('postread');

// app/Http/Controllers/HomeController.php
class HomeController extends Controller
{
    public function __construct()
    {
        $this->middleware('auth'); // 问题根源
    }

    public function index()
    {
        // ...
    }

    public function read(Request $request, $id)
    {
        // ...
    }
    // ... 其他方法
}

// app/Http/Controllers/HomeController.php
class HomeController extends Controller
{
    public function __construct()
    {
       // 排除 'index' 方法，使其不受 'auth' 中间件保护
       $this->middleware('auth')->except('index');
    }

    /**
     * 显示应用仪表盘。
     *
     * @return \Illuminate\Http\Response
     */
    public function index()
    {
        $articles = Article::all();
        $ar=Array('articles'=>$articles);
        return view('site.home',$ar);
    }

    // ... 其他方法，如 read、admin_index 等
}

public function __construct()
{
   $this->middleware('auth')->except(['index', 'read']);
}

public function __construct()
{
    // 只有 'admin_index', 'AddArticle' 方法需要认证
    $this->middleware('auth')->only(['admin_index', 'AddArticle']);
}

// routes/site.php 或 routes/web.php

// 公共路由，无需任何认证中间件
Route::get('/', 'HomeController@index')->name('home');
Route::get('/read/{id}', 'HomeController@read')->name('read');

// 管理员路由组，应用 'auth' 中间件
Route::group(['prefix' => 'dashboard', 'middleware' => ['web', 'auth']], function () {
    Route::get('/', 'HomeController@admin_index')->name('dashboard');
    Route::get('/add', 'HomeController@AddArticle')->name('addarticle');
    // ... 其他管理路由
});

// app/Http/Controllers/Auth/LoginController.php
class LoginController extends Controller
{
    public function __construct()
    {
        $this->middleware('guest')->except('logout');
    }
    // ...
}