编写下载网络图片方法,在excel中画图片的方法

composer.json

@@ -12,6 +12,8 @@
   "require": {
     "ext-json": "*",
     "ext-redis": "*",
+    "ext-gd": "*",
+    "ext-curl": "*",
     "hyperf/cache": "~1.1.0",
     "hyperf/framework": "~1.1.0",
     "hyperf/db-connection": "~1.1.0",

src/Tools/Drawer.php

+<?php
+/**
+ * Created by PhpStorm.
+ * User: Zero
+ * Date: 2020/7/27
+ * Time: 11:44
+ */
+
+namespace Meibuyu\Micro\Tools;
+
+use Exception;
+use Hyperf\Contract\ConfigInterface;
+use PhpOffice\PhpSpreadsheet\Worksheet\Drawing;
+use PhpOffice\PhpSpreadsheet\Worksheet\Worksheet;
+
+class Drawer
+{
+
+    /**
+     * @var ConfigInterface
+     */
+    protected $config;
+
+    private $rootPath;
+
+    private $savePath = '';
+
+    public function __construct()
+    {
+        $this->config = container(ConfigInterface::class);
+        $this->rootPath = $this->config->get('server.settings.document_root', BASE_PATH . '/public');
+    }
+
+    private function parseImagePath($imagePath)
+    {
+        if (strstr($imagePath, 'http') !== false) {
+            $imagePath = $this->downloadWebImage($imagePath);
+        }
+        return $imagePath;
+    }
+
+    /**
+     * @param string $url
+     * @param string $path
+     * @return string
+     */
+    public function downloadWebImage($url, $path = null)
+    {
+        $filename = pathinfo($url, PATHINFO_BASENAME);
+        $url = $this->parseUrl($url);
+        $path = $this->rootPath . '/download/images/' . ($path ?: $this->savePath);
+        if (!is_dir($path)) {
+            // 判断路径是否存在,不存在,则创建
+            mkdir($path, 0777, true);
+        }
+        $filePath = $path . '/' . $filename;
+        if (!file_exists($filePath)) {
+            $ch = curl_init();
+            curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false); // 信任任何证书
+            curl_setopt($ch, CURLOPT_URL, $url);
+            curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
+            curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 30);
+            $file = curl_exec($ch);
+            curl_close($ch);
+
+            $resource = fopen($path . '/' . $filename, 'a');
+            fwrite($resource, $file);
+            fclose($resource);
+        }
+        return $filePath;
+    }
+
+    private function parseUrl($url)
+    {
+        $url = rawurlencode($url);
+        $url = str_replace("%3A", ":", $url);
+        return str_replace("%2F", "/", $url);
+    }
+
+    /**
+     * @param $imgPath
+     * @param int $px
+     * @return bool|string
+     * @throws Exception
+     */
+    public function addBoard($imgPath, $px = 2)
+    {
+        $imgPath = $this->parseImagePath($imgPath);
+
+        $imgPathInfo = pathinfo($imgPath);
+        $filename = $imgPathInfo['filename']; // 图片名称
+        $ext = $imgPathInfo['extension']; // 图片扩展名
+        [$img_w, $img_h] = getimagesize($imgPath); // 图片大小
+
+        $savePath = $this->rootPath . '/download/board';
+        if (!is_dir($savePath)) {
+            // 判断路径是否存在,不存在,则创建
+            mkdir($savePath, 0777, true);
+        }
+        $imgNewPath = $savePath . '/' . $filename . '.' . $ext;
+        if (file_exists($imgNewPath)) {
+            return $imgNewPath;
+        }
+
+        switch ($ext) {
+            case 'jpeg':
+            case 'jpg':
+                $img_create_func = 'imagecreatefromjpeg';
+                $img_save_func = 'imagejpeg';
+                break;
+            case 'png':
+                $img_create_func = 'imagecreatefrompng';
+                $img_save_func = 'imagepng';
+                break;
+            case 'bmp':
+                $img_create_func = 'imagecreatefrombmp';
+                $img_save_func = 'imagebmp';
+                break;
+            case 'gif':
+                $img_create_func = 'imagecreatefromgif';
+                $img_save_func = 'imagegif';
+                break;
+            case 'vnd.wap.wbmp':
+                $img_create_func = 'imagecreatefromwbmp';
+                $img_save_func = 'imagewbmp';
+                break;
+            case 'xbm':
+                $img_create_func = 'imagecreatefromxbm';
+                $img_save_func = 'imagexbm';
+                break;
+            default:
+                throw new Exception("图片类型不支持");
+        }
+
+        // 黑色背景图片
+        $im = @imagecreatetruecolor(($img_w + $px), ($img_h + $px)) or die ("Cannot Initialize new GD image stream");
+        // 为真彩色画布创建背景，再设置为透明
+        $color = imagecolorallocate($im, 0, 0, 0);
+        imagefill($im, 0, 0, $color);
+        imageColorTransparent($im, $color);
+        // 把图片放到黑色背景图片上。边框是1px
+        $resource = $img_create_func($imgPath);
+        imagecopy($im, $resource, $px / 2, $px / 2, 0, 0, $img_w, $img_h);
+
+        $res = $img_save_func($im, $imgNewPath);
+
+        imagedestroy($im);
+        return $res ? $imgNewPath : false;
+    }
+
+    /**
+     * 画图片
+     * @param string $path 图片路径
+     * @param int $h 图片高度
+     * @param string $p 单元格索引
+     * @param Worksheet $sheet
+     * @param bool $addBoard
+     */
+    public function draw2Excel($path, $h, $p, $sheet, $addBoard = true)
+    {
+        try {
+            $path = $this->parseImagePath($path);
+            if ($addBoard) {
+                $path = $this->addBoard($path);
+            }
+            $drawing = new Drawing();
+            $drawing->setPath($path)->setCoordinates($p)->setHeight($h)->setWorksheet($sheet);
+        } catch (Exception $e) {
+            put_log($e->getMessage());
+        }
+    }
+
+    public function setSavePath($path)
+    {
+        $this->savePath = $path;
+    }
+
+}