新增生成pdf
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<?php
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namespace app\common\utils\pdf\service;
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use TCPDF;
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use Exception;
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class PdfGeneratorService
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{
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private $templatePath;
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private $defaultOptions;
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public function __construct()
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{
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// 设置模板基础路径
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$this->templatePath = app_path() . '/common/utils/pdf/template/';
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// 设置 TCPDF 默认选项
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$this->defaultOptions = [
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'page_orientation' => 'P', // PDF_PAGE_ORIENTATION
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'unit' => 'mm', // PDF_UNIT
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'page_format' => 'A4', // PDF_PAGE_FORMAT
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'unicode' => true,
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'encoding' => 'UTF-8',
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// --- 修改字体设置 ---
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// 'font' => 'dejavusans', // DejaVu 字体有时可能需要额外配置
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'font' => 'stsongstdlight', // 使用 TCPDF 内置的简体中文支持字体
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'font_style' => '', // 字体样式 (e.g., 'B' for bold)
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'font_size' => 10,
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// --- 字体设置结束 ---
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'creator' => 'Your Company Internal System',
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'author' => 'Your Company',
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'margin_left' => 15,
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'margin_right' => 15,
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'margin_top' => 20,
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'margin_bottom' => 20,
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'margin_header' => 5,
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'margin_footer' => 10,
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];
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}
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/**
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* 渲染模板并返回 HTML 字符串
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*
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* @param string $templateName 模板文件名 (不含 .php)
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* @param array $data 注入模板的数据
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* @return string 渲染后的 HTML
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* @throws Exception
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*/
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private function renderTemplate(string $templateName, array $data): string
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{
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$templateFile = $this->templatePath . $templateName . '.php';
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if (!file_exists($templateFile)) {
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throw new Exception("PDF template file not found: {$templateFile}");
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}
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// 提取数据变量到当前作用域，供模板使用
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extract($data);
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// 开启输出缓冲
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ob_start();
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// 包含模板文件
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include $templateFile;
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// 获取缓冲区内容并清理缓冲区
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$htmlContent = ob_get_clean();
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if ($htmlContent === false) {
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throw new Exception("Failed to render PDF template: {$templateName}");
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}
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return $htmlContent;
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}
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/**
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* 生成 PDF
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*
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* @param string $templateName 模板文件名 (不含 .php)
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* @param array $data 注入模板的数据
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* @param array $options （可选）覆盖默认的 TCPDF 选项
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* @return string PDF 二进制数据
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* @throws Exception
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*/
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public function generate(string $templateName, array $data, array $options = []): string
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{
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// 合并选项
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$options = array_merge($this->defaultOptions, $options);
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// 渲染 HTML
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$html = $this->renderTemplate($templateName, $data);
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// 创建 TCPDF 实例
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$pdf = new TCPDF(
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$options['page_orientation'],
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$options['unit'],
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$options['page_format'],
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$options['unicode'],
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$options['encoding']
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);
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// 设置文档信息
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$pdf->SetCreator($options['creator']);
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$pdf->SetAuthor($options['author']);
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$pdf->SetTitle($templateName . ' - Generated PDF');
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// --- 修改字体设置 ---
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// 使用支持中文的字体
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// 'stsongstdlight' 是 TCPDF 内置的简体中文 CJK 字体
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// 'cid0cs' 也是支持中文的字体，可以尝试
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$pdf->SetFont($options['font'], $options['font_style'], $options['font_size'], '', true);
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// --- 字体设置结束 ---
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// 设置页边距
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$pdf->SetMargins($options['margin_left'], $options['margin_top'], $options['margin_right']);
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$pdf->SetHeaderMargin($options['margin_header']);
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$pdf->SetFooterMargin($options['margin_footer']);
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// 设置自动分页
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$pdf->SetAutoPageBreak(TRUE, $options['margin_bottom']);
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// 设置图像比例因子
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$pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);
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// 添加首页
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$pdf->AddPage();
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// 写入 HTML 内容
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$pdf->writeHTML($html, true, false, true, false, '');
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// 结束最后一页
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$pdf->endPage();
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// 返回 PDF 字符串
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return $pdf->Output('', 'S'); // 'S' 返回字符串
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}
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/**
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* 保存 PDF 到文件
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*
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* @param string $templateName 模板文件名
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* @param array $data 注入模板的数据
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* @param string $filePath 保存的完整文件路径
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* @param array $options （可选）TCPDF 选项
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* @throws Exception
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*/
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public function saveToFile(string $templateName, array $data, string $filePath, array $options = [])
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{
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$options = array_merge($this->defaultOptions, $options);
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$html = $this->renderTemplate($templateName, $data);
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$pdf = new TCPDF(
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$options['page_orientation'],
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$options['unit'],
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$options['page_format'],
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$options['unicode'],
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$options['encoding']
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);
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$pdf->SetCreator($options['creator']);
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$pdf->SetAuthor($options['author']);
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$pdf->SetTitle($templateName . ' - Saved PDF');
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// --- 修改字体设置 ---
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$pdf->SetFont($options['font'], $options['font_style'], $options['font_size'], '', true);
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// --- 字体设置结束 ---
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$pdf->SetMargins($options['margin_left'], $options['margin_top'], $options['margin_right']);
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$pdf->SetAutoPageBreak(TRUE, $options['margin_bottom']);
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$pdf->setImageScale(PDF_IMAGE_SCALE_RATIO);
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$pdf->AddPage();
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$pdf->writeHTML($html, true, false, true, false, '');
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$pdf->endPage();
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// 确保目录存在
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$dir = dirname($filePath);
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if (!is_dir($dir)) {
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mkdir($dir, 0755, true);
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}
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$pdf->Output($filePath, 'F'); // 'F' 保存到文件
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}
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}
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@@ -0,0 +1,82 @@
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<?php
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namespace app\common\utils\pdf\service\document;
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use app\common\utils\pdf\service\PdfGeneratorService;
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use Exception;
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class ReimbursementDocumentService
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{
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private $pdfGenerator;
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public function __construct()
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{
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$this->pdfGenerator = new PdfGeneratorService();
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}
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/**
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* 根据报销单 ID 生成 PDF 数据
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* （这里模拟从数据库获取数据）
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*
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* @param int $reimbursementId
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* @return string PDF 二进制数据
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* @throws Exception
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*/
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public function generatePdfById(int $reimbursementId): string
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{
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// --- 模拟从数据库获取数据 ---
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// 实际应用中，这里应该是查询数据库
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$reimbursementData = $this->getMockReimbursementData($reimbursementId);
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if (!$reimbursementData) {
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throw new Exception("Reimbursement record not found for ID: {$reimbursementId}");
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}
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// --- 数据获取结束 ---
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// 调用核心 PDF 服务生成 PDF
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// 'reimbursement_template' 对应 app/view/pdf/reimbursement_template.php
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return $this->pdfGenerator->generate('reimbursement', $reimbursementData);
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}
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/**
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* 模拟获取报销单数据
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* @param int $id
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* @return array|null
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*/
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private function getMockReimbursementData(int $id)
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{
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if ($id <= 0) return null;
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return [
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'reimbursement_id' => 'REIM-' . str_pad($id, 5, '0', STR_PAD_LEFT),
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'applicant_name' => '张三',
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'department' => '技术部',
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'application_date' => '2023-10-26',
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'total_amount' => 1250.75,
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'reason' => "参加北京技术研讨会的差旅费用。\n包括交通、住宿和餐饮。",
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'items' => [
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['date' => '2023-10-20', 'category' => '交通费', 'description' => '高铁二等座', 'amount' => 520.00, 'remark' => ''],
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['date' => '2023-10-21', 'category' => '住宿费', 'description' => 'XX酒店 2 晚', 'amount' => 680.00, 'remark' => '含早餐'],
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['date' => '2023-10-21', 'category' => '餐饮费', 'description' => '午餐晚餐', 'amount' => 50.75, 'remark' => '发票已附'],
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]
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];
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}
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/**
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* 保存报销单 PDF 到服务器
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* @param int $reimbursementId
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* @param string $savePath 保存路径 (目录)
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* @throws Exception
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*/
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public function savePdfToFile(int $reimbursementId, string $savePath)
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{
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$reimbursementData = $this->getMockReimbursementData($reimbursementId);
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if (!$reimbursementData) {
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throw new Exception("Reimbursement record not found for ID: {$reimbursementId}");
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}
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$filename = 'reimbursement_' . $reimbursementData['reimbursement_id'] . '_' . date('Ymd_His') . '.pdf';
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$fullPath = rtrim($savePath, '/') . '/' . $filename;
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$this->pdfGenerator->saveToFile('reimbursement_template', $reimbursementData, $fullPath);
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}
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}
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