293 lines
9.1 KiB
PHP
293 lines
9.1 KiB
PHP
<?php
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namespace app\common\service\qrcode;
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use think\facade\Request;
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use Endroid\QrCode\QrCode;
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use Endroid\QrCode\Writer\PngWriter;
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use Endroid\QrCode\Color\Color;
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use Endroid\QrCode\Encoding\Encoding;
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use Endroid\QrCode\ErrorCorrectionLevel;
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use Endroid\QrCode\RoundBlockSizeMode;
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use Exception;
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class QrcodeService
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{
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/**
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* 生成二维码并保存到文件
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* @param string $content 二维码内容
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* @param string $filename 文件名（可选，不包含路径）
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* @param array $options 配置选项
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* @return array 返回结果信息
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*/
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public function saveImage(string $content, string $filename = '', array $options = []): array
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{
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try {
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// 验证内容
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if (empty($content)) {
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throw new Exception('二维码内容不能为空');
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}
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// 默认配置
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$defaultOptions = [
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'size' => 200, // 图片尺寸
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'margin' => 10, // 边距
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'foreground_color' => '#000000', // 前景色（黑色）
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'background_color' => '#FFFFFF', // 背景色（白色）
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'error_correction' => 'high', // 容错级别：low, medium, quartile, high
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'encoding' => 'UTF-8', // 编码
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'round_block_size' => false, // 圆角模块
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'validate_result' => false, // 验证结果
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];
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// 合并配置
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$config = array_merge($defaultOptions, $options);
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// 生成文件名
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if (empty($filename)) {
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$filename = $this->generateFilename($content);
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}
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// 确保是PNG格式
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$filename = $this->ensurePngExtension($filename);
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// 生成二维码
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$imageData = $this->generateQrCode($content, $config);
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// 保存文件
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$saveInfo = $this->saveToFile($imageData, $filename);
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return [
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'file_url' => $saveInfo['path']
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];
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} catch (Exception $e) {
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return [
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'success' => false,
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'message' => '二维码生成失败',
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'error' => $e->getMessage(),
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'content' => $content
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];
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}
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}
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/**
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* 生成二维码图片数据
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*/
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private function generateQrCode(string $content, array $config): string
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{
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// 创建二维码对象
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$qrCode = QrCode::create($content)
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->setEncoding(new Encoding($config['encoding']))
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->setErrorCorrectionLevel($this->getErrorCorrectionLevel($config['error_correction']))
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->setSize($config['size'])
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->setMargin($config['margin'])
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->setRoundBlockSizeMode($config['round_block_size'] ?
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RoundBlockSizeMode::Margin : RoundBlockSizeMode::None)
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->setForegroundColor(new Color(
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$this->hexToR($config['foreground_color']),
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$this->hexToG($config['foreground_color']),
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$this->hexToB($config['foreground_color'])
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))
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->setBackgroundColor(new Color(
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$this->hexToR($config['background_color']),
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$this->hexToG($config['background_color']),
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$this->hexToB($config['background_color'])
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));
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// 创建写入器
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$writer = new PngWriter();
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// 生成二维码
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$result = $writer->write($qrCode);
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// 如果需要验证
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if ($config['validate_result']) {
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$reader = new \Endroid\QrCode\Reader\Reader();
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try {
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$reader->read($result->getString());
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} catch (\Exception $e) {
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throw new Exception('二维码验证失败: ' . $e->getMessage());
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}
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}
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return $result->getString();
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}
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/**
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* 保存图片到文件
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*/
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private function saveToFile(string $imageData, string $filename): array
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{
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// 创建存储目录（按日期分类）
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$dateDir = date('Ymd');
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$saveDir = 'uploads/qrcode/' . $dateDir . '/';
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$relativePath = $saveDir . $filename;
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// 获取完整路径
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$rootPath = app()->getRootPath();
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$fullPath = $rootPath . 'public/' . $relativePath;
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// 确保目录存在
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$dirPath = dirname($fullPath);
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if (!is_dir($dirPath)) {
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if (!mkdir($dirPath, 0755, true)) {
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throw new Exception('无法创建目录: ' . $dirPath);
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}
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}
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// 保存文件
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if (file_put_contents($fullPath, $imageData) === false) {
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throw new Exception('无法保存文件到: ' . $fullPath);
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}
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// 验证文件是否保存成功
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if (!file_exists($fullPath) || filesize($fullPath) === 0) {
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throw new Exception('文件保存失败或文件大小为0');
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}
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// 生成可访问的URL
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$domain = Request::domain();
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$fileUrl = $domain . '/' . $relativePath;
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return [
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'filename' => $filename,
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'path' => $relativePath,
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'full_path' => $fullPath,
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'url' => $fileUrl
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];
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}
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/**
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* 生成唯一的文件名
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*/
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private function generateFilename(string $content): string
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{
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$timestamp = time();
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$hash = substr(md5($content . $timestamp), 0, 8);
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return 'qrcode_' . date('YmdHis') . '_' . $hash . '.png';
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}
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/**
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* 确保文件扩展名为.png
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*/
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private function ensurePngExtension(string $filename): string
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{
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$pathinfo = pathinfo($filename);
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// 如果没有扩展名或扩展名不是png，则添加.png
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if (!isset($pathinfo['extension']) || strtolower($pathinfo['extension']) !== 'png') {
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$filename = ($pathinfo['filename'] ?? 'qrcode') . '.png';
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}
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return $filename;
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}
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/**
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* 获取错误纠正级别
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*/
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private function getErrorCorrectionLevel(string $level): ErrorCorrectionLevel
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{
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$levels = [
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'low' => ErrorCorrectionLevel::Low,
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'medium' => ErrorCorrectionLevel::Medium,
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'quartile' => ErrorCorrectionLevel::Quartile,
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'high' => ErrorCorrectionLevel::High,
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];
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return $levels[$level] ?? ErrorCorrectionLevel::High;
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}
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/**
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* 从十六进制颜色获取R值
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*/
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private function hexToR(string $hex): int
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{
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$hex = ltrim($hex, '#');
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if (strlen($hex) == 3) {
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$hex = $hex[0] . $hex[0] . $hex[1] . $hex[1] . $hex[2] . $hex[2];
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}
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return hexdec(substr($hex, 0, 2));
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}
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/**
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* 从十六进制颜色获取G值
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*/
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private function hexToG(string $hex): int
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{
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$hex = ltrim($hex, '#');
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if (strlen($hex) == 3) {
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$hex = $hex[0] . $hex[0] . $hex[1] . $hex[1] . $hex[2] . $hex[2];
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}
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return hexdec(substr($hex, 2, 2));
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}
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/**
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* 从十六进制颜色获取B值
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*/
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private function hexToB(string $hex): int
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{
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$hex = ltrim($hex, '#');
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if (strlen($hex) == 3) {
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$hex = $hex[0] . $hex[0] . $hex[1] . $hex[1] . $hex[2] . $hex[2];
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}
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return hexdec(substr($hex, 4, 2));
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}
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/**
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* 生成二维码并返回Base64编码
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* @param string $content 二维码内容
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* @param array $options 配置选项
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* @return string Base64编码的图片
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*/
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public function generateBase64(string $content, array $options = []): string
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{
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try {
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$defaultOptions = [
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'size' => 300,
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'margin' => 10,
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'foreground_color' => '#000000',
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'background_color' => '#FFFFFF',
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'error_correction' => 'high',
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];
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$config = array_merge($defaultOptions, $options);
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$imageData = $this->generateQrCode($content, $config);
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return 'data:image/png;base64,' . base64_encode($imageData);
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} catch (Exception $e) {
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throw new Exception('生成Base64二维码失败: ' . $e->getMessage());
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}
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}
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/**
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* 直接生成并输出二维码图片
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* @param string $content 二维码内容
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* @param array $options 配置选项
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* @return \think\Response
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*/
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public function generateResponse(string $content, array $options = [])
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{
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try {
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$defaultOptions = [
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'size' => 300,
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'margin' => 10,
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'foreground_color' => '#000000',
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'background_color' => '#FFFFFF',
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'error_correction' => 'high',
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];
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$config = array_merge($defaultOptions, $options);
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$imageData = $this->generateQrCode($content, $config);
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return response($imageData)
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->contentType('image/png')
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->header('Cache-Control', 'public, max-age=3600');
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} catch (Exception $e) {
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return response('二维码生成失败: ' . $e->getMessage())
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->contentType('text/plain')
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->code(500);
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}
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}
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} |