重新实现filesystem模块，升级到最新版本；

extend/think/filesystem/Driver.php

@@ -0,0 +1,130 @@
+<?php
+// +----------------------------------------------------------------------
+// | ThinkPHP [ WE CAN DO IT JUST THINK ]
+// +----------------------------------------------------------------------
+// | Copyright (c) 2006~2021 http://thinkphp.cn All rights reserved.
+// +----------------------------------------------------------------------
+// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
+// +----------------------------------------------------------------------
+// | Author: yunwuxin <448901948@qq.com>
+// +----------------------------------------------------------------------
+declare (strict_types = 1);
+
+namespace think\filesystem;
+
+use League\Flysystem\Filesystem;
+use League\Flysystem\FilesystemAdapter;
+use League\Flysystem\UnableToSetVisibility;
+use League\Flysystem\UnableToWriteFile;
+use RuntimeException;
+use think\Cache;
+use think\File;
+
+/**
+ * Class Driver
+ * @package think\filesystem
+ * @mixin Filesystem
+ */
+abstract class Driver
+{
+
+    /** @var Cache */
+    protected $cache;
+
+    /** @var Filesystem */
+    protected $filesystem;
+
+    /**
+     * 配置参数
+     * @var array
+     */
+    protected $config = [];
+
+    public function __construct(Cache $cache, array $config)
+    {
+        $this->cache  = $cache;
+        $this->config = array_merge($this->config, $config);
+
+        $adapter          = $this->createAdapter();
+        $this->filesystem = $this->createFilesystem($adapter);
+    }
+
+    abstract protected function createAdapter(): FilesystemAdapter;
+
+    protected function createFilesystem(FilesystemAdapter $adapter): Filesystem
+    {
+        $config = array_intersect_key($this->config, array_flip(['visibility', 'disable_asserts', 'url']));
+
+        return new Filesystem($adapter, $config);
+    }
+
+    /**
+     * 获取文件完整路径
+     * @param string $path
+     * @return string
+     */
+    public function path(string $path): string
+    {
+        return $path;
+    }
+
+    protected function concatPathToUrl($url, $path)
+    {
+        return rtrim($url, '/') . '/' . ltrim($path, '/');
+    }
+
+    public function url(string $path): string
+    {
+        throw new RuntimeException('This driver does not support retrieving URLs.');
+    }
+
+    /**
+     * 保存文件
+     * @param string $path 路径
+     * @param File $file 文件
+     * @param null|string|\Closure $rule 文件名规则
+     * @param array $options 参数
+     * @return bool|string
+     */
+    public function putFile(string $path, File $file, $rule = null, array $options = [])
+    {
+        return $this->putFileAs($path, $file, $file->hashName($rule), $options);
+    }
+
+    /**
+     * 指定文件名保存文件
+     * @param string $path 路径
+     * @param File $file 文件
+     * @param string $name 文件名
+     * @param array $options 参数
+     * @return bool|string
+     */
+    public function putFileAs(string $path, File $file, string $name, array $options = [])
+    {
+        $stream = fopen($file->getRealPath(), 'r');
+        $path   = trim($path . '/' . $name, '/');
+
+        $result = $this->put($path, $stream, $options);
+
+        if (is_resource($stream)) {
+            fclose($stream);
+        }
+
+        return $result ? $path : false;
+    }
+
+    protected function put(string $path, $contents, array $options = [])
+    {
+        try {
+            $this->writeStream($path, $contents, $options);
+        } catch (UnableToWriteFile|UnableToSetVisibility $e) {
+            return false;
+        }
+        return true;
+    }
+
+    public function __call($method, $parameters)
+    {
+        return $this->filesystem->$method(...$parameters);
+    }
+}