記錄使用Java Poi匯出Excel表格，合併單元格，單元格背景顏色，單元格邊框
阿新 • • 發佈：2021-08-19
預覽的匯出效果
實現程式碼
Workbook wb = new XSSFWorkbook(); String sheetName = "全過程諮詢"; List<ExcelTitle> excelTitles = new ArrayList<>(); excelTitles.add(new ExcelTitle("序號" , null)); excelTitles.add(new ExcelTitle("業務部/分公司" , null)); excelTitles.add(new ExcelTitle("工程實施專案部" , null)); List<String> columns = new ArrayList<String>(){{ add("公司整體形象"); add("合同履行情況及信譽度"); }}; excelTitles.add(new ExcelTitle("工程監理過程控制能力/招標專案服務水平能力/專案諮詢造價控制能力" , columns)); excelTitles.add(new ExcelTitle("阿達瓦達瓦薩達" , null)); columns = new ArrayList<String>(){{ add("專案服務質量、進度控制/諮詢服務質量、進度控制"); add("專案服務的造價控制/諮詢業務能力"); add("專案服務的安全控制/諮詢服務的時間安排"); }}; excelTitles.add(new ExcelTitle("公司整體實力" , columns)); excelTitles.add(new ExcelTitle("發乾哈阿斯達斯的" , null)); columns = new ArrayList<String>(){{ add("專案服務質量、進度控制/諮詢服務質量、進度控制"); add("專案服務的造價控制/諮詢業務能力"); add("專案服務的安全控制/諮詢服務的時間安排"); add("專案服務的造價控制/諮詢業務能力"); add("專案服務的安全控制/諮詢服務的時間安排"); }}; excelTitles.add(new ExcelTitle("4566666666546456564564" , columns)); // 計算實際列數 int countColNums = 0; for (ExcelTitle excelTitle : excelTitles) { if(excelTitle.getColumns() != null){ // 如果有子項，那麼不統計父項的數量 不然會多出列數 countColNums += excelTitle.getColumns().size(); }else{ countColNums++; } } Sheet sheet = wb.createSheet(sheetName); int rowSize = 1; Row row = sheet.createRow(rowSize); row.setHeight((short) (50*20)); // 第四步，建立單元格，並設定值表頭 設定表頭居中 CellStyle style = wb.createCellStyle(); //設定樣式對齊方式：水平\垂直居中 style.setAlignment(HorizontalAlignment.CENTER); style.setVerticalAlignment(VerticalAlignment.CENTER); style.setFillForegroundColor(IndexedColors.GOLD.getIndex()); style.setFillPattern(FillPatternType.SOLID_FOREGROUND); // 單元格邊框 style.setBorderBottom(BorderStyle.THIN); style.setBorderLeft(BorderStyle.THIN); style.setBorderRight(BorderStyle.THIN); style.setBorderTop(BorderStyle.THIN); // 文字自動換行 style.setWrapText(true); int columnWidth = 150*20; // 記錄父項開始的列數 Map<String, Integer> titleStartColNumMap = new HashMap<>(); // 建立標題 int n = 0; for (int i = 0; i < countColNums; i++) { ExcelTitle excelTitle = excelTitles.get(n); // 合併開始列 int startRangeSize = i; // 合併結束列 int endRangeColSize = i; if(excelTitle.getColumns() != null){ titleStartColNumMap.put(excelTitle.getName() , i); for (int k = 0; k < excelTitle.getColumns().size(); k++) { Cell cell = row.createCell(i + k); cell.setCellStyle(style); cell.setCellValue(excelTitle.getName()); sheet.setColumnWidth((short) i + k , columnWidth); } i += excelTitle.getColumns().size() - 1; endRangeColSize = i; }else{ Cell cell = row.createCell(i); cell.setCellStyle(style); cell.setCellValue(excelTitle.getName()); sheet.setColumnWidth((short) i , columnWidth); } int rangeRowSize = excelTitle.getColumns() == null ? row.getRowNum() + 1 : row.getRowNum(); // 合併單元格 CellRangeAddress rangeAddress = new CellRangeAddress(row.getRowNum(), rangeRowSize, startRangeSize, endRangeColSize); sheet.addMergedRegion(rangeAddress); // 增加合併後的單元格邊框 RegionUtil.setBorderBottom(BorderStyle.THIN, rangeAddress, sheet); // 下邊框 RegionUtil.setBorderLeft(BorderStyle.THIN, rangeAddress, sheet); // 左邊框 RegionUtil.setBorderRight(BorderStyle.THIN, rangeAddress, sheet); // 有邊框 RegionUtil.setBorderTop(BorderStyle.THIN, rangeAddress, sheet); // 上邊框 n++; } row = sheet.getRow(++rowSize); row.setHeight((short) (50*20)); // 將子項內容新增至父項下面的單元格 for (int i = 0; i < excelTitles.size(); i++) { ExcelTitle excelTitle = excelTitles.get(i); if(excelTitle.getColumns() != null){ for (int j = 0; j < excelTitle.getColumns().size(); j++) { Cell cell = row.createCell(titleStartColNumMap.get(excelTitle.getName()) + j); cell.setCellStyle(style); cell.setCellValue(excelTitle.getColumns().get(j)); sheet.setColumnWidth((short) i , columnWidth); } } } row = sheet.createRow(0); row.setHeight((short) (30*20)); style = wb.createCellStyle(); //設定樣式對齊方式：水平\垂直居中 style.setAlignment(HorizontalAlignment.CENTER); style.setVerticalAlignment(VerticalAlignment.CENTER); // 標題 Cell cell = row.createCell(0); cell.setCellValue("2020年上半年（ ）分公司（部門）監理、諮詢客戶滿意度調查情況明細"); cell.setCellStyle(style); CellRangeAddress rangeAddress = new CellRangeAddress(0, 0, 0, countColNums - 1); sheet.addMergedRegion(rangeAddress); file.getParentFile().mkdirs(); FileOutputStream os = new FileOutputStream(file); wb.write(os); os.flush(); os.close();
public static class ExcelTitle { private String name; private List<String> columns; public ExcelTitle() { } public ExcelTitle(String name, List<String> columns) { this.name = name; this.columns = columns; } public String getName() { return name; } public void setName(String name) { this.name = name; } public List<String> getColumns() { return columns; } public void setColumns(List<String> columns) { this.columns = columns; } }
pom.xml 版本 <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>4.1.0</version> </dependency> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi-ooxml</artifactId> <version>4.1.0</version> </dependency>