批量生成PDF条码

效果图：

 
//调用下方接口注意编码格式if(CollectionUtil.isNotEmpty(productExList)){String exportFileName = URLEncoder.encode("商品条码", "UTF-8") + DateUtil.format(new Date(), "yyyyMMddHHmmss");response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + exportFileName + ".pdf");response.setHeader("Access-Control-Expose-Headers", "Content-Disposition");response.setHeader("content-Type", "application/pdf");generateProdBarcodePDF(productExList, response.getOutputStream(),response);}else {response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "没有要生成的条码请调整查询条件后重新生成");}/*** 批量生成商品条形码pdf文件** @param productExList 条码数据x信息【对象集合】* @param os    输出流* @throws IOException*/public static void generateProdBarcodePDF(List<MProductEx> productExList, OutputStream os,HttpServletResponse response) throws IOException {Document document = null;try {document = new Document(new Rectangle(283F, 425F), 10, 10, 10, 10);PdfWriter writer = PdfWriter.getInstance(document, os);document.open();PdfContentByte cb = writer.getDirectContent();//判断列，一条数据只允许单列int dataCount = productExList.stream().filter(f -> StringUtils.isNotEmpty(f.getProdLabel())).collect(Collectors.toList()).size();int numColumns = 1;if (dataCount > 1) {numColumns = 2;}BaseFont bfChinese = BaseFont.createFont("C:\\Windows\\Fonts\\simsun.ttc,1",  BaseFont.IDENTITY_H,BaseFont.NOT_EMBEDDED);Font fontChinese = new Font(bfChinese, 5, Font.NORMAL);//创建一个两列的表格PdfPTable headerTable = new PdfPTable(numColumns);if(numColumns == 1){headerTable.setWidthPercentage(40.0f);}else {headerTable.setWidthPercentage(80.0f);}PdfPCell rightCell = null;Pattern pat = Pattern.compile("[\u4e00-\u9fa5]");Matcher m = null;for (MProductEx p : productExList) {m = pat.matcher(p.getProdLabel());if(StringUtils.isNullOrEmpty(p.getProdLabel()) || m.find()){response.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR, "商品编号不能为中文且不能为空");}rightCell = new PdfPCell();Image codeImage = BarcodeUtil.generateBarcodePrefixSuffix(cb, p.getProdLabel(), 72, 24);Phrase imageP = new Phrase("", fontChinese);//自己调整偏移值 主要是负值往下imageP.add(new Chunk(codeImage, 15, -4));String textNmShow ="商品名称:" + (StringUtils.isNotEmpty(p.getProdNm()) ? p.getProdNm() : "");String textUnitShow ="计量单位:" + (StringUtils.isNotEmpty(p.getUnitNm()) ? p.getUnitNm() : "") ;String textSpecShow ="规格: " + (StringUtils.isNotEmpty(p.getSpec()) ? p.getSpec() : "");String textModelAndUnitShow ="型号:" + (StringUtils.isNotEmpty(p.getModel()) ? p.getModel() : "") +"  " + textUnitShow;//Chunk chunkCd = new Chunk(textCdShow,fontChinese);Chunk chunkNm = new Chunk(textNmShow,fontChinese);//Chunk chunkUnit = new Chunk(textUnitShow,fontChinese);Chunk chunkSpec = new Chunk(textSpecShow,fontChinese);Chunk chunkModel = new Chunk(textModelAndUnitShow,fontChinese);rightCell = new PdfPCell();//imageP.setLeading(2f,1.5f);rightCell.addElement(imageP);//rightCell.addElement(chunkCd);rightCell.addElement(new Chunk("  ",fontChinese));rightCell.addElement(chunkNm);//rightCell.addElement(chunkUnit);rightCell.addElement(chunkSpec);rightCell.addElement(chunkModel);//false自动换行rightCell.setNoWrap(false);//行间距//rightCell.setLeading(40f,10.0f);rightCell.setHorizontalAlignment(Element.ALIGN_LEFT);rightCell.setVerticalAlignment(Element.ALIGN_MIDDLE);rightCell.setFixedHeight(70.0f);//rightCell.setPadding(4.0f);//填充headerTable.addCell(rightCell);}if(productExList.size()%2 ==1){rightCell = new PdfPCell();new Chunk("END",fontChinese);headerTable.addCell(rightCell);}document.add(headerTable);os.flush();} catch (DocumentException e) {e.printStackTrace();} finally {if(Objects.nonNull(document)){document.close();}if (Objects.nonNull(os)) {os.close();}}}