Php '；名为“的插件”；示例\段“；在插件管理器Zend\Router\RoutePluginManager中找不到

我目前正在学习Zend 3教程。唯一的区别是我使用的是示例表/类而不是相册。除每次尝试访问dev服务器时出现以下错误外，所有内容都符合规范要求：

致命错误：未捕获异常 带有消息的“Zend\ServiceManager\Exception\ServiceNotFoundException” '在插件中找不到名为“Example\Segment”的插件 manager Zend\Router\RoutePluginManager'位于 C:\Websites\ZEND2\vendor\zendframework\zend servicemanager\src\AbstractPluginManager.php:133 堆栈跟踪：#0 C:\Websites\ZEND2\vendor\zendframework\zend router\src\SimpleRouteStack.php（280）： Zend\ServiceManager\AbstractPluginManager->get（'Example\Segment'， 数组）#1 C:\Websites\ZEND2\vendor\zendframework\zend router\src\Http\TreeRouteStack.php（201）： Zend\Router\SimpleRouteStack->routeFromArray（阵列）#2 C:\Websites\ZEND2\vendor\zendframework\zend router\src\Http\TreeRouteStack.php（151）： Zend\Router\Http\TreeRouteStack->routeFromArray（数组）#3 C:\Websites\ZEND2\vendor\zendframework\zend router\src\SimpleRouteStack.php（142）： Zend\Router\Http\TreeRouteStack->addRoute（'example'，Array）#4 C:\Websites\ZEND2\vendor\zendframework\zend router\src\SimpleRouteStack.php（86）： Zend\Router\SimpleRouteStack->addRoutes（数组）中的 C:\Websites\ZEND2\vendor\zendframework\zend servicemanager\src\AbstractPluginManager.php 在线133

ExampleController.php

namespace Example\Controller;

use Example\Model\ExampleTable;
use Zend\Mvc\Controller\AbstractActionController;
use Zend\View\Model\ViewModel;

class ExampleController extends AbstractActionController
{
    private $table;

    public function indexAction()
    {
        return new ViewModel([
            'examples' => $this->table->fetchAll(),
        ]);
    }

    public function addAction()
    {
    }

    public function editAction()
    {
    }

    public function deleteAction()
    {
    }

     public function __construct(ExampleTable $table)
    {
        $this->table = $table;
    }
}

ExampleTable.php

<?php 

namespace Example\Model;

use RuntimeException;
use Zend\Db\TableGateway\TableGatewayInterface;

class ExampleTable
{
    private $tableGateway;

    public function __construct(TableGatewayInterface $tableGateway)
    {
        $this->tableGateway = $tableGateway;
    }

    public function fetchAll()
    {
        return $this->tableGateway->select();
    }

    public function getExample($id)
    {
        $id = (int) $id;
        $rowset = $this->tableGateway->select(['id' => $id]);
        $row = $rowset->current();
        if (! $row) {
            throw new RuntimeException(sprintf(
                'Could not find row with identifier %d',
                $id
            ));
        }

        return $row;
    }

    public function saveExample(Example $example)
    {
        $data = [
            'name' => $example->name,
            'description'  => $example->description,
            'web_url'  => $example->web_url,
        ];

        $id = (int) $example->id;

        if ($id === 0) {
            $this->tableGateway->insert($data);
            return;
        }

        if (! $this->getExample($id)) {
            throw new RuntimeException(sprintf(
                'Cannot update example with identifier %d; does not exist',
                $id
            ));
        }

        $this->tableGateway->update($data, ['id' => $id]);
    }

    public function deleteExample($id)
    {
        $this->tableGateway->delete(['id' => (int) $id]);
    }
}

modules.config.php

<?php

namespace Example;

return [

    // The following section is new and should be added to your file:
    'router' => [
        'routes' => [
            'example' => [
                'type'    => Segment::class,
                'options' => [
                    'route' => '/example[/:action[/:id]]',
                    'constraints' => [
                        'action' => '[a-zA-Z][a-zA-Z0-9_-]*',
                        'id'     => '[0-9]+',
                    ],
                    'defaults' => [
                        'controller' => Controller\ExampleController::class,
                        'action'     => 'index',
                    ],
                ],
            ],
        ],
    ],

    'view_manager' => [
        'template_path_stack' => [
            'example' => __DIR__ . '/../view',
        ],
    ],
];

<?php
/**
 * @link      http://github.com/zendframework/ZendSkeletonApplication for the canonical source repository
 * @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 */

/**
 * List of enabled modules for this application.
 *
 * This should be an array of module namespaces used in the application.
 */
return [
    'Zend\Form',
    'Zend\Db',
    'Zend\Router',
    'Zend\Validator',
    'Application',
    'Example',
];

---

您的
module.config.php
文件需要一个：

use Zend\Router\Http\Segment;

在顶部附近声明以创建稍后在文件中使用的
段
别名。目前，由于该类不存在，PHP正在您声明的名称空间中查找该类（因此
Example\Segment
），该类不存在。
请仅包含修复该问题所需的代码。请参阅
module.config.php
write
'segment'
中的堆栈溢出指导原则，以取代
segment:：class
Nice、worked和removes错误！当你试着迈出第一步时，像这样的洞出现在你的脚下，这真是令人沮丧。谢谢你，蒂姆
<?php
/**
 * @link      http://github.com/zendframework/ZendSkeletonApplication for the canonical source repository
 * @copyright Copyright (c) 2005-2016 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 */

/**
 * List of enabled modules for this application.
 *
 * This should be an array of module namespaces used in the application.
 */
return [
    'Zend\Form',
    'Zend\Db',
    'Zend\Router',
    'Zend\Validator',
    'Application',
    'Example',
];

use Zend\Router\Http\Segment;