java使用itext生成pdf

一、利用Adobe Acrobat DC软件创建pdf模板

备好Adobe Acrobat DC软件

1.excel/jpg/png文件转pdf文件

右击打开我们要转换的文件

2.然后点击添加域

3.可以看到域的名字

4.调整字体大小/对齐方式等

5.保存

二，代码部分

首先

上依赖

            <dependency>
                <groupId>com.itextpdf</groupId>
                <artifactId>itextpdf</artifactId>
                <version>${com.itextpdf.version}</version>
            </dependency>

Controller

    @PostMapping(value = "printlabel/pallet", produces = MediaType.APPLICATION_PDF_VALUE)
    @ApiOperation(value = "打印托盘码", produces = MediaType.APPLICATION_PDF_VALUE)
    public void printlabelPallet(@ApiParam @Valid @RequestBody PalletPrintRequest request, HttpServletResponse response) throws Exception {
        labelService.printlabelPallet(request, response);
    }

Service

@Override
    @Lock4j
    @Transactional(rollbackFor = Exception.class)
    public void printlabelPallet(PalletPrintRequest request, HttpServletResponse response) throws Exception {
        Crossdock crossdock = new Crossdock();
        CrossdockPlanConsignee consignee = new CrossdockPlanConsignee();
        CrossdockPlan plan = new CrossdockPlan();
        //暂存
        if (request.getIsTemp()){
            crossdock = crossdockService.getByFieldValue(request.getOrderNo(), Crossdock::getOrderNo);
        }else{
            plan = planService.getByFieldValue(request.getPlanNo(),CrossdockPlan::getPlanNo);
            if (ObjectUtils.isEmpty(plan)){
                throw new ApiException(ResultCode.PARAMES_INVALID,"plan not found");
            }
            crossdock = crossdockService.getValidById(plan.getOrderId());
            consignee = planConsigneeService.getByFieldValue(plan.getId(), CrossdockPlanConsignee::getPlanId);
        }
        Customer customer = customerService.getValidById(crossdock.getCustomerId());
        //托盘标号
        String consigneeName = consignee.getName() != null ? consignee.getName() : "";
        if (request.getIsCustomize() && StringUtils.isNotBlank(request.getPalletNo())){
            consigneeName = request.getPalletNo();
        }else if (request.getIsTemp()) {
            consigneeName += crossdock.getOrderNo();
            consigneeName += LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyMMdd"));
            String redisKey = redisService.genKey(new String[]{NoRules.class.getSimpleName()}, consigneeName);
            redisService.setIfAbsent(redisKey, 0, NoRulesEnums.DateFormat.yyMMdd.getDays(), TimeUnit.DAYS);
            Long no = redisService.increment(redisKey);
            consigneeName = consigneeName + String.format("%0" + 5 + "d", no);
        }else {
            consigneeName += LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyMMdd"));
            String redisKey = redisService.genKey(new String[]{NoRules.class.getSimpleName()}, consigneeName);
            redisService.setIfAbsent(redisKey, 0, NoRulesEnums.DateFormat.yyMMdd.getDays(), TimeUnit.DAYS);
            Long no = redisService.increment(redisKey);
            consigneeName = consigneeName + String.format("%0" + 5 + "d", no);
        }
        //托盘信息
        List<CrossdockPalletLabelNew> labelList = Lists.newArrayList();
        CrossdockPalletLabelNew palletLabel = new CrossdockPalletLabelNew().setCustomer(customer.getCode())
                .setPrintDate(LocalDateTime.now().format(DateTimeFormatter.ofPattern("yyyy/MM/dd")))
                .setContainerNo(StringUtils.right(crossdock.getContainerNo(), 5))//取后5位
                .setTotalAmount(crossdock.getTotalAmount().stripTrailingZeros().toPlainString())// 转运单总箱数
                .setWarehouse(consignee.getName())// 收件人名称
                .setPieces(request.getPieces().stripTrailingZeros().toPlainString())
                .setBarcode(consigneeName)
                .setPalletNO(consigneeName);
        labelList.add(palletLabel);
        //保存crossdock_plan_pallet
        BigDecimal palletCount = planPalletService.countByFieldValue(consigneeName, CrossdockPlanPallet::getPalletNo);
        if (palletCount.compareTo(BigDecimal.ZERO) <= 0) {
            CrossdockPlanPallet pallet = new CrossdockPlanPallet();
            pallet.setPalletNo(consigneeName).setOrderId(crossdock.getId()).setAmount(request.getPieces());
            if (ObjectUtils.isNotEmpty(plan) && StringUtils.isNotBlank(plan.getId())){
                pallet.setPlanId(plan.getId());
            }
            planPalletService.save(pallet);
        }else {
            throw new ApiException(ResultCode.FORBIDDEN,"msg:the_pallet_code_already_exists");
        }
        //保存crossdock_plan_pda
        BigDecimal pdaCount = planPdaService.countByFieldValue(consigneeName, CrossdockPlanPda::getPalletNo);
        if (pdaCount.compareTo(BigDecimal.ZERO) <= 0) {
            CrossdockPlanPda pda = new CrossdockPlanPda();
            pda.setPalletNo(consigneeName).setOrderNo(crossdock.getOrderNo()).setStatus(CrossdockEnums.PlanPdaStatus.INBOUND.name());
            if (ObjectUtils.isNotEmpty(plan) && StringUtils.isNotBlank(plan.getPlanNo())){
                pda.setPlanNo(plan.getPlanNo());
            }
            if(request.getIsTemp()){
                pda.setSourcePalletNo(PrintEnums.sourcePalletNo.STORAGE.name());
            }else {
                pda.setSourcePalletNo(PrintEnums.sourcePalletNo.PLAN.name());
            }
            planPdaService.save(pda);
        }else {
            throw new ApiException(ResultCode.FORBIDDEN,"msg:the_pallet_code_already_exists");
        }
        //保存托盘打印日志
        PalletPrintLogCreateRequest log = new PalletPrintLogCreateRequest().setOrderId(crossdock.getId())
                .setPalletNo(consigneeName)
                .setIsCustomize(request.getIsCustomize())
                .setPieces(request.getPieces());
        if (ObjectUtils.isNotEmpty(plan) && StringUtils.isNotBlank(plan.getId())){
            log.setPlanId(plan.getId());
        }
        palletPrintLogService.createPalletPrintLog(log);
        printPalletLabel(labelList, response.getOutputStream());
    }

    public void printPalletLabel(List<CrossdockPalletLabelNew> labelList, OutputStream outputStream) throws Exception {
        Document doc = new Document();
        PdfCopy copy = new PdfCopy(doc, outputStream);
        doc.open();
        BaseFont bf = BaseFont.createFont(TEMPLATE_FONT, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
        for (CrossdockPalletLabelNew label : labelList) {
            for(int i = 0; i < NUM_TO_PRINT; i++) {
                ByteArrayOutputStream bos = new ByteArrayOutputStream();
                PdfStamper stamper = new PdfStamper(new PdfReader(PALLET_TEMPLATE), bos);
                Map<String, Object> fieldMap = BeanMap.create(label);
                AcroFields fields = stamper.getAcroFields();
                fields.addSubstitutionFont(bf);
                for (String key : fieldMap.keySet()) {
                    if (key.equals(BARCODE)) {
                        createBarcode(stamper.getOverContent(1), label.getBarcode(), fields.getFieldPositions(BARCODE).get(0).position);
                    } else {
                        fields.setField(key, Objects.toString(fieldMap.get(key), StringPool.EMPTY));
                    }
                }
                stamper.setFormFlattening(true);
                stamper.close();
                copy.addPage(copy.getImportedPage(new PdfReader(bos.toByteArray()), 1));
            }
        }
        doc.close();
    }

private final String TEMPLATE_FONT = "template/font/Alibaba-PuHuiTi-Medium.ttf";

private final String PALLET_TEMPLATE = "template/pallet.pdf";

private final int NUM_TO_PRINT = 2;

生成条形码

    private void createBarcode(PdfContentByte cb, String barcode, Rectangle position) throws DocumentException {
        Barcode128 barcode128 = new Barcode128();
        barcode128.setCode(barcode);
        barcode128.setX(1.7F);
        barcode128.setBarHeight(position.getHeight());
        Image image128 = barcode128.createImageWithBarcode(cb, null, null);
        image128.scaleToFit(position.getWidth(), position.getHeight());
        image128.setAbsolutePosition(position.getLeft() + (position.getWidth() - image128.getScaledWidth()) / 2,
                position.getBottom() + (position.getHeight() - image128.getScaledHeight()) / 2);
        cb.addImage(image128);
    }