初始化项目：添加后端代码、ThinkPHP框架、前端资源

extend/TuzhiEasyWeChat/Channels/Server/Guard.php

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+<?php
+
+/*
+ * This file is part of the overtrue/wechat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace TuzhiEasyWeChat\Channels\Server;
+
+use TuzhiEasyWeChat\Kernel\ServerGuard;
+use TuzhiEasyWeChat\Kernel\Encryptor;
+/**
+ * Class Guard.
+ *
+ * @author overtrue <i@overtrue.me>
+ */
+class Guard extends ServerGuard
+{
+    protected function shouldReturnRawResponse(): bool
+    {
+        return !is_null($this->app['request']->get('echostr'));
+    }
+
+    /**
+     * @return mixed
+     *
+     * @throws \EasyWeChat\Kernel\Exceptions\RuntimeException
+     */
+    protected function decryptMessage(array $message)
+    {
+        $encryptor = new Encryptor($this->app['config']->get('app_id'), $this->app['config']->get('token'), $this->app['config']->get('aes_key'));
+
+        return $message = $encryptor->decrypt(
+            $message['Encrypt'],
+            $this->app['request']->get('msg_signature'),
+            $this->app['request']->get('nonce'),
+            $this->app['request']->get('timestamp')
+        );
+    }
+}
+

extend/TuzhiEasyWeChat/Channels/Server/Handlers/EchoStrHandler.php

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+<?php
+
+/*
+ * This file is part of the overtrue/wechat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace TuzhiEasyWeChat\Channels\Server\Handlers;
+
+use TuzhiEasyWeChat\Kernel\Contracts\EventHandlerInterface;
+use TuzhiEasyWeChat\Kernel\Decorators\FinallyResult;
+use TuzhiEasyWeChat\Kernel\ServiceContainer;
+
+/**
+ * Class EchoStrHandler.
+ *
+ * @author overtrue <i@overtrue.me>
+ */
+class EchoStrHandler implements EventHandlerInterface
+{
+    /**
+     * @var ServiceContainer
+     */
+    protected $app;
+
+    /**
+     * EchoStrHandler constructor.
+     */
+    public function __construct(ServiceContainer $app)
+    {
+        $this->app = $app;
+    }
+
+    /**
+     * @param mixed $payload
+     *
+     * @return FinallyResult|null
+     */
+    public function handle($payload = null)
+    {
+        if ($str = $this->app['request']->get('echostr')) {
+            return new FinallyResult($str);
+        }
+    }
+}

extend/TuzhiEasyWeChat/Channels/Server/ServiceProvider.php

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+<?php
+
+/*
+ * This file is part of the overtrue/wechat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace TuzhiEasyWeChat\Channels\Server;
+
+use TuzhiEasyWeChat\Kernel\Encryptor;
+use TuzhiEasyWeChat\Channels\Server\Handlers\EchoStrHandler;
+use Pimple\Container;
+use Pimple\ServiceProviderInterface;
+
+/**
+ * Class ServiceProvider.
+ *
+ * @author overtrue <i@overtrue.me>
+ */
+class ServiceProvider implements ServiceProviderInterface
+{
+    /**
+     * {@inheritdoc}.
+     */
+    public function register(Container $app)
+    {
+        !isset($app['encryptor']) && $app['encryptor'] = function ($app) {
+            return new Encryptor(
+                $app['config']['app_id'],
+                $app['config']['token'],
+                $app['config']['aes_key']
+            );
+        };
+
+        !isset($app['server']) && $app['server'] = function ($app) {
+            $guard = new Guard($app);
+            $guard->push(new EchoStrHandler($app));
+
+            return $guard;
+        };
+    }
+}