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@ -1,5 +1,10 @@ |
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package com.xujie.sys.modules.oss.service.impl; |
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import com.aspose.cells.PageOrientationType; |
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import com.aspose.cells.PageSetup; |
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import com.aspose.cells.Worksheet; |
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import com.aspose.cells.Workbook; |
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import com.aspose.cells.PaperSizeType; |
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import com.xujie.sys.datasource.annotation.DataSource; |
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import com.baomidou.mybatisplus.core.metadata.IPage; |
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import com.baomidou.mybatisplus.extension.plugins.pagination.Page; |
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@ -27,6 +32,13 @@ import java.util.List; |
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import java.util.Map; |
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import java.util.Objects; |
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import org.apache.poi.ss.usermodel.*; |
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import com.aspose.words.Document; |
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import com.aspose.cells.Workbook; |
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import java.io.File; |
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@Service("sysOssService") |
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@ -141,7 +153,7 @@ public class SysOssServiceImpl extends ServiceImpl<SysOssDao, SysOssEntity> impl |
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} |
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@Override |
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public void previewOssFileById(Integer id, HttpServletResponse response) { |
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public void previewOssFileById(Integer id, HttpServletResponse response) throws Exception { |
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SysOssEntity oss = this.getById(id); |
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if (Objects.isNull(oss)) { |
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throw new IllegalArgumentException("文件不存在"); |
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@ -152,10 +164,27 @@ public class SysOssServiceImpl extends ServiceImpl<SysOssDao, SysOssEntity> impl |
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if (!file.exists()) { |
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throw new IllegalArgumentException("文件不存在"); |
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} |
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if (!new File(oss.getUrl().split("\\.")[0] + ".pdf").exists()) { |
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// 获取文件扩展名 |
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String fileExtension = getFileExtension(file); |
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if ("xlsx".equalsIgnoreCase(fileExtension) || "xls".equalsIgnoreCase(fileExtension)) { |
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// 如果是 Excel 文件，将其转换为 PDF |
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convertExcelToPdf(file); |
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} else if ("docx".equalsIgnoreCase(fileExtension)) { |
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// 如果是 Word 文件，将其转换为 PDF |
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convertWordToPdf(file); |
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} |
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} |
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String encodedFileName; |
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String fileName = oss.getFileName(); |
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try { |
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encodedFileName = URLEncoder.encode(oss.getFileName(), "UTF-8"); |
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// 如果oss.getFileName()的扩展名为xlsx或xls或docx或doc，则将文件名后缀改为pdf |
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if (fileName.endsWith(".xlsx") || fileName.endsWith(".xls") || fileName.endsWith(".docx") || fileName.endsWith(".doc")) { |
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fileName = fileName.substring(0, fileName.lastIndexOf(".")) + ".pdf"; |
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} |
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encodedFileName = URLEncoder.encode(fileName, "UTF-8"); |
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} catch (UnsupportedEncodingException e) { |
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throw new RuntimeException("文件名编码失败", e); |
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} |
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@ -168,6 +197,13 @@ public class SysOssServiceImpl extends ServiceImpl<SysOssDao, SysOssEntity> impl |
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} |
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response.setHeader("Content-Disposition", "attachment; filename=" + encodedFileName); |
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if (oss.getFileType().equals("xlsx") || oss.getFileType().equals("xls") || oss.getFileType().equals("docx") || oss.getFileType().equals("doc")) { |
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file = new File(oss.getUrl().split("\\.")[0] + ".pdf"); |
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} else { |
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file = new File(oss.getUrl()); |
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} |
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try (FileInputStream fis = new FileInputStream(file); |
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BufferedInputStream bis = new BufferedInputStream(fis); |
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ServletOutputStream os = response.getOutputStream()) { |
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@ -183,6 +219,60 @@ public class SysOssServiceImpl extends ServiceImpl<SysOssDao, SysOssEntity> impl |
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} catch (IOException e) { |
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throw new RuntimeException("文件下载失败", e); |
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} |
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} |
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// 获取文件扩展名的方法 |
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public static String getFileExtension(File file) { |
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String fileName = file.getName(); |
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int lastIndexOfDot = fileName.lastIndexOf('.'); |
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if (lastIndexOfDot == -1) { |
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return ""; // 如果没有扩展名，返回空字符串 |
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} |
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return fileName.substring(lastIndexOfDot + 1); |
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} |
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// 将 Excel 文件转换为 PDF |
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public static void convertExcelToPdf(File file) throws Exception { |
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Workbook workbook; |
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String filePath = file.getAbsolutePath(); |
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if (filePath.endsWith(".xlsx")) { |
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workbook = new Workbook(file.getAbsolutePath()); |
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} else { |
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workbook = new Workbook(filePath); // 使用 Aspose.Cells 读取 XLS 文件 |
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} |
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Worksheet worksheet = workbook.getWorksheets().get(0); |
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PageSetup pageSetup = worksheet.getPageSetup(); |
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// 设置页面方向（横向或纵向） |
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pageSetup.setOrientation(PageOrientationType.PORTRAIT); // 纵向 |
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// pageSetup.setOrientation(PageOrientationType.LANDSCAPE); // 横向 |
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// 设置纸张大小（例如 A4） |
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pageSetup.setPaperSize(PaperSizeType.PAPER_A_4); |
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// 设置缩放比例（例如调整为 80% 的原始大小） |
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pageSetup.setZoom(60); |
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// 其他设置，比如边距 |
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pageSetup.setLeftMargin(0); // 左边距 |
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pageSetup.setRightMargin(0); // 右边距 |
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pageSetup.setTopMargin(0.5); // 上边距 |
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pageSetup.setBottomMargin(0.5); // 下边距 |
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// 转换为 PDF |
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String pdfPath = filePath.replaceAll("\\.xlsx|\\.xls", ".pdf"); |
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workbook.save(pdfPath, com.aspose.cells.SaveFormat.PDF); |
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System.out.println("Excel 文件转换为 PDF 成功，保存路径：" + pdfPath); |
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} |
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// 将 Word 文件转换为 PDF |
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public static void convertWordToPdf(File file) throws Exception { |
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Document document = new Document(file.getAbsolutePath()); |
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// 转换为 PDF |
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String pdfPath = file.getAbsolutePath().replace(".docx", ".pdf"); |
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document.save(pdfPath); |
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System.out.println("Word 文件转换为 PDF 成功，保存路径：" + pdfPath); |
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} |
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} |
yuejiayang
1 year ago