| | |
| | | // 如果是index为1的sheet,设置顶端标题行 |
| | | |
| | | // 将第1行(索引为0)设置为每页重复的标题行 |
| | | sheet.setRepeatingRows(CellRangeAddress.valueOf("$1:$4")); |
| | | sheet.setRepeatingRows(CellRangeAddress.valueOf("$1:$5")); |
| | | row = sheet.createRow(0); |
| | | row.setHeight((short) (37*20)); |
| | | |
| | |
| | | // if (Files.exists(Paths.get(imagePath))) { |
| | | // byte[] imageBytes = Files.readAllBytes(Paths.get(imagePath)); |
| | | // 将byte数组转换成inputstream,以便插入到Excel中 |
| | | ClientAnchor anchor = new HSSFClientAnchor(0, 0, 0, 100, (short) cell.getColumnIndex(), cell.getRow().getRowNum(), (short) (cell.getColumnIndex() + 5), |
| | | cell.getRow().getRowNum() + 1); |
| | | ClientAnchor anchor = new HSSFClientAnchor(813, 0, 787, 71, (short) 2, 0, (short) 4, |
| | | 1); |
| | | |
| | | |
| | | |
| | | // ClientAnchor anchor = new HSSFClientAnchor(813, 0, 787, 71, (short) 2, 0, (short) 4, |
| | | // 2); |
| | | // 设置锚点类型为MOVE_AND_RESIZE,使图片可以随单元格调整大小 |
| | | anchor.setAnchorType(ClientAnchor.AnchorType.MOVE_AND_RESIZE); |
| | | // 计算居中位置 |
| | | int col1 = 3; // 中间列 |
| | | int col2 = col1 + 2; |
| | | anchor.setCol1(col1); |
| | | anchor.setCol2(col2); |
| | | anchor.setRow1(0); |
| | | anchor.setRow2(1); |
| | | // int col1 = 3; // 中间列 |
| | | // int col2 = col1 + 2; |
| | | // anchor.setCol1(col1); |
| | | // anchor.setCol2(col2); |
| | | // anchor.setRow1(0); |
| | | // anchor.setRow2(1); |
| | | // anchor.set |
| | | // anchor.setHorizontallyCenter(true); |
| | | |
| | |
| | | row = sheet.createRow(i + 5 ); |
| | | else |
| | | row = sheet.createRow(i + 1 ); |
| | | // 第一步:让POI自动计算适配内容的行高 |
| | | // sheet.autoSizeRow(0); |
| | | // 第二步:获取自动计算后的行高 |
| | | |
| | | |
| | | // 得到导出对象. |
| | | T vo = (T) list.get(i); |
| | |
| | | // 设置实体类私有属性可访问 |
| | | field.setAccessible(true); |
| | | this.addCell(excel, row, vo, field, column++); |
| | | |
| | | } |
| | | |
| | | } |
| | | } |
| | | |
| | |
| | | Cell cell = null; |
| | | try { |
| | | // 设置行高为自动调整 |
| | | row.setHeight((short) -1); |
| | | // row.setHeight((short) -1); |
| | | // 根据Excel中设置情况决定是否导出,有些情况需要保持为空,希望用户填写这一列. |
| | | if (attr.isExport()) { |
| | | // 创建cell |
| | |
| | | } else if (align == HorizontalAlignment.RIGHT) { |
| | | styleKey = "data3"; |
| | | } |
| | | cell.setCellStyle(styles.get(styleKey)); |
| | | // 获取并修改样式 |
| | | CellStyle style = styles.get(styleKey); |
| | | Workbook workbook = row.getSheet().getWorkbook(); |
| | | CellStyle newStyle = workbook.createCellStyle(); |
| | | newStyle.cloneStyleFrom(style); |
| | | newStyle.setWrapText(true); // 关键:启用自动换行 |
| | | cell.setCellStyle(newStyle); |
| | | |
| | | // 用于读取对象中的属性 |
| | | Object value = getTargetValue(vo, field, attr); |
| | |
| | | // 设置列类型 |
| | | setCellVo(value, attr, cell); |
| | | } |
| | | |
| | | adjustRowHeightAfterSetValue(row, cell, value); |
| | | |
| | | addStatisticsData(column, Convert.toStr(value), attr); |
| | | } |
| | | } catch (Exception e) { |
| | |
| | | } |
| | | return cell; |
| | | } |
| | | /** |
| | | * 设置值后调整行高 |
| | | */ |
| | | private void adjustRowHeightAfterSetValue(Row row, Cell cell, Object value) { |
| | | if (value == null) return; |
| | | |
| | | String text = value.toString(); |
| | | Sheet sheet = row.getSheet(); |
| | | |
| | | // 1. 计算自动高度(基于内容) |
| | | short autoHeight = calculateSimpleAutoHeight(text, cell); |
| | | |
| | | // 2. 获取当前行高 |
| | | short currentHeight = row.getHeight(); |
| | | if (currentHeight == -1) { |
| | | currentHeight = sheet.getDefaultRowHeight(); |
| | | } |
| | | |
| | | // 3. 使用较大的高度(自动计算的高度或当前高度) |
| | | short baseHeight = (short) Math.max(currentHeight, autoHeight); |
| | | System.out.println(baseHeight+"aaaaaaaaatttttttt"); |
| | | // 4. 在基础上增加额外高度(100单位 = 5点) |
| | | short extraHeight = 80; |
| | | short newHeight = (short) (baseHeight + extraHeight); |
| | | |
| | | // 5. 限制最大高度 |
| | | short maxHeight = (short) 4000; // 100点 |
| | | row.setHeight((short) Math.min(maxHeight,newHeight)); |
| | | } |
| | | |
| | | /** |
| | | * 简化的自动高度计算 |
| | | */ |
| | | private short calculateSimpleAutoHeight(String text, Cell cell) { |
| | | if (text == null || text.isEmpty()) return 0; |
| | | |
| | | Sheet sheet = cell.getSheet(); |
| | | int colIndex = cell.getColumnIndex(); |
| | | |
| | | // 获取列宽(字符数) |
| | | int colWidthChars = sheet.getColumnWidth(colIndex) / 256; |
| | | if (colWidthChars <= 0) colWidthChars = 10; |
| | | |
| | | // 计算文本行数 |
| | | int lines = 1; |
| | | if (text.contains("\n")) { |
| | | // 有显式换行 |
| | | String[] parts = text.split("\n"); |
| | | for (String part : parts) { |
| | | lines += Math.max(1, (int) Math.ceil(part.length() * 1.5 / colWidthChars)); |
| | | } |
| | | } else { |
| | | // 自动换行 |
| | | lines = (int) Math.ceil(text.length() * 1.5 / colWidthChars); |
| | | } |
| | | |
| | | // 每行高度:假设18点(360 POI单位) |
| | | return (short) (lines * 360); |
| | | } |
| | | /** |
| | | * 设置 POI HSSFSheet 单元格提示 |
| | | * |
| | |
| | | HSSFSheet hssfSheet = hssfWb.getSheetAt(index); |
| | | HSSFHeader header = hssfSheet.getHeader(); |
| | | // 设置页眉字体 |
| | | // header.setFontName("宋体"); |
| | | // header.setFontName("宋体");4 |
| | | // header.setFontSize((short) 10); |
| | | // 设置页眉内容 |
| | | hssfSheet.setMargin(Sheet.HeaderMargin, 2.1); |
| | | hssfSheet.setMargin(Sheet.HeaderMargin, 1.43); |
| | | header.setRight("&\"宋体,Bold\"共 &N 页 第 &P 页"); |
| | | } |
| | | // 如果是index为1的sheet,设置顶端标题行 |