初始化项目：添加后端代码、ThinkPHP框架、前端资源

extend/TuzhiEasyWeChat/Kernel/Http/Response.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\Kernel\Http;
+
+use TuzhiEasyWeChat\Kernel\Support\Collection;
+use TuzhiEasyWeChat\Kernel\Support\XML;
+use GuzzleHttp\Psr7\Response as GuzzleResponse;
+use Psr\Http\Message\ResponseInterface;
+
+/**
+ * Class Response.
+ *
+ * @author overtrue <i@overtrue.me>
+ */
+class Response extends GuzzleResponse
+{
+    /**
+     * @return string
+     */
+    public function getBodyContents()
+    {
+        $this->getBody()->rewind();
+        $contents = $this->getBody()->getContents();
+        $this->getBody()->rewind();
+
+        return $contents;
+    }
+
+    /**
+     * @return \TuzhiEasyWeChat\Kernel\Http\Response
+     */
+    public static function buildFromPsrResponse(ResponseInterface $response)
+    {
+        return new static(
+            $response->getStatusCode(),
+            $response->getHeaders(),
+            $response->getBody(),
+            $response->getProtocolVersion(),
+            $response->getReasonPhrase()
+        );
+    }
+
+    /**
+     * Build to json.
+     *
+     * @return string
+     */
+    public function toJson()
+    {
+        return json_encode($this->toArray());
+    }
+
+    /**
+     * Build to array.
+     *
+     * @return array
+     */
+    public function toArray()
+    {
+        $content = $this->removeControlCharacters($this->getBodyContents());
+
+        if (false !== stripos($this->getHeaderLine('Content-Type'), 'xml') || 0 === stripos($content, '<xml')) {
+            return XML::parse($content);
+        }
+
+        $array = json_decode($content, true, 512, JSON_BIGINT_AS_STRING);
+
+        if (JSON_ERROR_NONE === json_last_error()) {
+            return (array) $array;
+        }
+
+        return [];
+    }
+
+    /**
+     * Get collection data.
+     *
+     * @return \TuzhiEasyWeChat\Kernel\Support\Collection
+     */
+    public function toCollection()
+    {
+        return new Collection($this->toArray());
+    }
+
+    /**
+     * @return object
+     */
+    public function toObject()
+    {
+        return json_decode($this->toJson());
+    }
+
+    /**
+     * @return bool|string
+     */
+    public function __toString()
+    {
+        return $this->getBodyContents();
+    }
+
+    /**
+     * @return string
+     */
+    protected function removeControlCharacters(string $content)
+    {
+        return \preg_replace('/[\x00-\x1F\x80-\x9F]/u', '', $content);
+    }
+}

extend/TuzhiEasyWeChat/Kernel/Http/StreamResponse.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\Kernel\Http;
+
+use TuzhiEasyWeChat\Kernel\Exceptions\InvalidArgumentException;
+use TuzhiEasyWeChat\Kernel\Exceptions\RuntimeException;
+use TuzhiEasyWeChat\Kernel\Support\File;
+
+/**
+ * Class StreamResponse.
+ *
+ * @author overtrue <i@overtrue.me>
+ */
+class StreamResponse extends Response
+{
+    /**
+     * @return bool|int
+     *
+     * @throws \TuzhiEasyWeChat\Kernel\Exceptions\InvalidArgumentException
+     * @throws \TuzhiEasyWeChat\Kernel\Exceptions\RuntimeException
+     */
+    public function save(string $directory, string $filename = '', bool $appendSuffix = true)
+    {
+        $this->getBody()->rewind();
+
+        $directory = rtrim($directory, '/');
+
+        if (!is_dir($directory)) {
+            mkdir($directory, 0755, true); // @codeCoverageIgnore
+        }
+
+        if (!is_writable($directory)) {
+            throw new InvalidArgumentException(sprintf("'%s' is not writable.", $directory));
+        }
+
+        $contents = $this->getBody()->getContents();
+
+        if (empty($contents) || '{' === $contents[0]) {
+            throw new RuntimeException('Invalid media response content.');
+        }
+
+        if (empty($filename)) {
+            if (preg_match('/filename="(?<filename>.*?)"/', $this->getHeaderLine('Content-Disposition'), $match)) {
+                $filename = $match['filename'];
+            } else {
+                $filename = md5($contents);
+            }
+        }
+
+        if ($appendSuffix && empty(pathinfo($filename, PATHINFO_EXTENSION))) {
+            $filename .= File::getStreamExt($contents);
+        }
+
+        file_put_contents($directory.'/'.$filename, $contents);
+
+        return $filename;
+    }
+
+    /**
+     * @return bool|int
+     *
+     * @throws \TuzhiEasyWeChat\Kernel\Exceptions\InvalidArgumentException
+     * @throws \TuzhiEasyWeChat\Kernel\Exceptions\RuntimeException
+     */
+    public function saveAs(string $directory, string $filename, bool $appendSuffix = true)
+    {
+        return $this->save($directory, $filename, $appendSuffix);
+    }
+}