Pengenalan: Mengeksport borang pembayaran balik hendaklah menggantikan secara automatik yang sepadan mengikut templat excel yang ditentukan, dan kemudian menjana semula excel baharu. Dalam templat excel yang diberikan, beberapa medan telah digabungkan sel, seperti ditunjukkan di bawah.
Memandangkan borang pembayaran balik mungkin mengandungi berbilang kandungan pembayaran balik, dapat dilihat apabila kandungan pembayaran balik melebihi pratetap nilai dalam templat, Apabila garis yang ditentukan ditentukan, garisan itu akan dibalut secara automatik, tetapi sel tidak akan digabungkan secara automatik mengikut gaya dalam templat apabila garisan dibalut, seperti yang ditunjukkan di bawah.
Pertama sekali, anda boleh melihatnya secara intuitif apabila excel memasukkan data dan membalut baris secara automatik , garis putus Data tidak digabungkan secara automatik mengikut gaya baris sebelumnya.
Jadi saya terfikir untuk menggabungkan lajur ini secara manual menggunakan kod, dan kemudian menambahkan gaya sempadan untuk menyelesaikan masalah.
4. Penyelesaian:
Perlu diingat bahawa mengikut idea di atas, secara langsung menggabungkan sel dan kemudian menambah sempadan tidak dapat menyelesaikan masalah secara langsung.
Anda perlu mencipta setiap sel kosong di bahagian belakang dahulu, dan kemudian menggabungkannya bersama-sama untuk menyelesaikan masalah Kod untuk mencipta sel dijelaskan dalam kelas CustomCellWriteHandler
di bawah.
Ini boleh dianggap sebagai perangkap yang mengambil masa sehari suntuk untuk dilalui. . .
public static void outExcelBalance(String modelFile, String newFile, Map<String, Object> map, List<FillDataExpense> fillData, HttpServletResponse response, String fileName){ //定义model模板中默认的行数 int firstRow = 7; //excel中表示第八行,即模板中默认的一条 int lastRow = 7; InputStream is = null; File file = new File(modelFile); File file1 = new File(newFile); //String file1Name = file1.getName(); BufferedInputStream bis = null; try { if (!file.exists()) { copyFileUsingJava7Files(file, file1); } //TODO 单元格样式 Set<Integer> rowsBorderSet= new HashSet<>(); CustomCellWriteHandler customCellWriteHandler = null; //TODO 单元格合并 List<CellRangeAddress> cellRangeAddresss = new ArrayList<>(); if (ListUtils.isNotNull(fillData)){ if (fillData.size() > 1){ //合并每条报销单的第3-10列 for (int i = 1; i < fillData.size(); i++) { firstRow++; lastRow++; cellRangeAddresss.add(new CellRangeAddress(firstRow, lastRow, 2, 9)); cellRangeAddresss.add(new CellRangeAddress(firstRow, lastRow, 10, 11)); rowsBorderSet.add(firstRow); } } } customCellWriteHandler = new CustomCellWriteHandler(rowsBorderSet); MyMergeStrategy myMergeStrategy = new MyMergeStrategy(cellRangeAddresss); ExcelWriter excelWriter = EasyExcel.write(newFile) //注册单元格式 .registerWriteHandler(customCellWriteHandler) //注册合并策略 .registerWriteHandler(myMergeStrategy) .withTemplate(modelFile).build(); WriteSheet writeSheet = EasyExcel.writerSheet().build(); FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build(); if (!ListUtil.listIsEmpty(fillData)){ excelWriter.fill(fillData, fillConfig, writeSheet); //excelWriter.fill(fillData, fillConfig, writeSheet); } excelWriter.fill(map, writeSheet); excelWriter.finish(); response.setHeader("content-type", "text/plain"); response.setHeader("content-type", "application/x-msdownload;"); response.setContentType("text/plain; charset=utf-8"); response.setHeader("Content-Disposition", "attachment; filename=" + new String(fileName.getBytes("utf-8"),"ISO8859-1")); byte[] buff = new byte[1024]; OutputStream os = null; os = response.getOutputStream(); bis = new BufferedInputStream(new FileInputStream(file1)); int i = bis.read(buff); while (i != -1) { os.write(buff, 0, buff.length); os.flush(); i = bis.read(buff); } } catch (Exception e){ LOGGER.error(e.getMessage()); } finally { if (bis != null) { try { bis.close(); } catch (IOException e) { e.printStackTrace(); } } // 删除生成文件 /*if (file1.exists()) { file1.delete(); }*/ } }
Gabungan selMyMergeStrategy
Kod kelas:
public class MyMergeStrategy extends AbstractMergeStrategy { //合并坐标集合 private List<CellRangeAddress> cellRangeAddresss; //构造 public MyMergeStrategy(List<CellRangeAddress> cellRangeAddresss) { this.cellRangeAddresss = cellRangeAddresss; } @Override protected void merge(Sheet sheet, Cell cell, Head head, Integer integer) { if (ListUtils.isNotNull(cellRangeAddresss)) { if (cell.getRowIndex() == 7 ) { for (CellRangeAddress item : cellRangeAddresss) { sheet.addMergedRegionUnsafe(item); } } } } }
Gaya selCustomCellWriteHandler
Kod kelas:
public class CustomCellWriteHandler implements CellWriteHandler { private static final Logger LOGGER = LoggerFactory.getLogger(CustomCellWriteHandler.class); //标黄行宽集合 private Set<Integer> rowIndexs; //构造 public CustomCellWriteHandler(Set<Integer> rowIndexs) { this.rowIndexs = rowIndexs; } public CustomCellWriteHandler() { } @Override public void beforeCellCreate(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, Row row, Head head, Integer columnIndex, Integer relativeRowIndex, Boolean isHead) { LOGGER.info("beforeCellCreate~~~~"); } @Override public void afterCellCreate(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, Cell cell, Head head, Integer relativeRowIndex, Boolean isHead) { LOGGER.info("afterCellCreate~~~~"); } @Override public void afterCellDataConverted(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, CellData cellData, Cell cell, Head head, Integer integer, Boolean aBoolean) { } @Override public void afterCellDispose(WriteSheetHolder writeSheetHolder, WriteTableHolder writeTableHolder, List<CellData> cellDataList, Cell cell, Head head, Integer relativeRowIndex, Boolean isHead) { //获取工作簿 // HSSFWorkbook wb = new HSSFWorkbook(); // //获取sheet // HSSFSheet sheet = wb.createSheet(); // HSSFRow row = sheet.createRow(); // HSSFCellStyle style = wb.createCellStyle(); // 这里可以对cell进行任何操作 if (CollectionUtils.isNotEmpty(rowIndexs)) { Workbook workbook = writeSheetHolder.getSheet().getWorkbook(); CellStyle cellStyle = workbook.createCellStyle(); Sheet sheet = writeSheetHolder.getSheet(); cellStyle.setAlignment(new HSSFWorkbook().createCellStyle().getAlignment()); cellStyle.setBorderBottom(BorderStyle.THIN); //下边框 cellStyle.setBottomBorderColor(IndexedColors.BLACK.getIndex()); cellStyle.setBorderLeft(BorderStyle.THIN);//左边框 cellStyle.setBorderTop(BorderStyle.THIN);//上边框 cellStyle.setBorderRight(BorderStyle.THIN);//右边框 cellStyle.setWrapText(true);//自动换行 //字体 // Font cellFont = workbook.createFont(); // cellFont.setBold(true); // cellStyle.setFont(cellFont); // //标黄,要一起设置 // cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND); //设置前景填充样式 // cellStyle.setFillForegroundColor(IndexedColors.YELLOW.getIndex());//前景填充色 if (rowIndexs.contains(cell.getRowIndex())) { Row row = null; //循环创建空白单元格 for (int i = 0; i < rowIndexs.size(); i++) { for (Integer rowIndex : rowIndexs){ //创建4-10列的空白格 row = sheet.getRow(rowIndex.intValue()); if (row == null){ row = sheet.createRow(rowIndex.intValue()); } for (int j = 3; j <= 9; j++) { //获取8行的cell列 cell = row.createCell(j); cell.setCellStyle(cellStyle); cell.setCellValue(" "); LOGGER.info("第{}行,第{}列创建空白格。", cell.getRowIndex(), j); } //创建12列的红白格 cell = row.createCell(11); cell.setCellStyle(cellStyle); cell.setCellValue(" "); LOGGER.info("第{}行,第11列创建空白格。", cell.getRowIndex()); //创建21列的空白格 cell = row.createCell(21); cell.setCellStyle(cellStyle); cell.setCellValue(" "); LOGGER.info("第{}行,第21列创建空白格。", cell.getRowIndex()); } } } } } }
1. //创建单元格样式 CustomCellWriteHandler customCellWriteHandler = new CustomCellWriteHandler(参数按需给定); 2. //单元格进行合并 List<CellRangeAddress> cellRangeAddresss = new ArrayList<>(); //例如:从firstRow行到lastRow行的2列到9列合并 cellRangeAddresss.add(new CellRangeAddress(firstRow, lastRow, 2, 9)); cellRangeAddresss.add(new CellRangeAddress(firstRow, lastRow, 10, 11)); MyMergeStrategy myMergeStrategy = new MyMergeStrategy(cellRangeAddresss); 3. //注册以上两种策略 ExcelWriter excelWriter = EasyExcel.write(newFile) //注册单元格式 .registerWriteHandler(customCellWriteHandler) //注册合并策略 .registerWriteHandler(myMergeStrategy) .withTemplate(modelFile).build();
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