有些时候需要上传一些附件，比如exl，word，预览的时候客户需要用pdf展示，下面就简答介绍下转换方法

效果图

依赖：

这是我从网上下载到本地然后再依赖的，也可以使用pom文件依赖更好

代码如下：

import com.aspose.cells.License;
import com.aspose.cells.PdfSaveOptions;
import com.aspose.cells.Workbook;
import com.aspose.words.Document;
import com.aspose.words.SaveFormat;import java.io.*;public class Office2PdfUtil {/*** 生成pdf方法* @param sPath* @param dPath*/public static void excel2pdf(String sPath, String dPath) {// 验证License 否则有水印if (!authrolizeLicense()){System.out.println("许可证无效！");}try {// 原始excel路径Workbook wb = new Workbook(sPath);FileOutputStream fileOS = new FileOutputStream(dPath);PdfSaveOptions pdfSaveOptions = new PdfSaveOptions();//把内容放在一张PDF 页面上；pdfSaveOptions.setOnePagePerSheet(false);pdfSaveOptions.setAllColumnsInOnePagePerSheet(true);wb.save(fileOS, pdfSaveOptions);fileOS.flush();fileOS.close();} catch (Exception e) {e.printStackTrace();}}public static boolean doc2pdf(String inPath, String outPath) {// 验证License 若不验证则转化出的pdf文档会有水印产生if (!authrolizeLicense()) {return false;}FileOutputStream os = null;try {long old = System.currentTimeMillis();// 新建一个空白pdf文档File file = new File(outPath);os = new FileOutputStream(file);// Address是将要被转化的word文档Document doc = new Document(inPath);// 全面支持DOC, DOCX, OOXML, TXT,RTF HTML, OpenDocument, PDF,doc.save(os, SaveFormat.PDF);// EPUB, XPS, SWF 相互转换long now = System.currentTimeMillis();// 转化用时System.out.println("pdf转换成功，共耗时：" + ((now - old) / 1000.0) + "秒");} catch (Exception e) {e.printStackTrace();return false;}finally {if (os != null) {try {os.flush();os.close();} catch (IOException e) {e.printStackTrace();}}}return true;}/*** 鉴权* @return*/public static boolean authrolizeLicense() {boolean result = false;try {InputStream is = License.class.getResourceAsStream("/com.aspose.cells.lic_2999.xml");License asposeLicense = new License();asposeLicense.setLicense(is);is.close();result = true;} catch (Exception e) {e.printStackTrace();}return result;}public static void main(String[] args) {excel2pdf("D:\\work\\pdf\\xls测试.xls", "D:\\work\\output\\xls测试.pdf");excel2pdf("D:\\work\\pdf\\xlsx测试.xlsx", "D:\\work\\output\\xlsx测试.pdf");doc2pdf("D:\\work\\pdf\\文本测试.txt", "D:\\work\\output\\文本测试.pdf");doc2pdf("D:\\work\\pdf\\docx测试.docx", "D:\\work\\output\\docx测试.pdf");doc2pdf("D:\\work\\pdf\\doc测试.doc", "D:\\work\\output\\doc测试.pdf");}
}