JSF – 使用Apache POI中的HSSFFont，为JSF中的Excel表单设置全局字体types

我有一个选项将数据表导出到Excel工作表。
我试着设置字体types为“Calibri”表中的所有单元格。
但是，下面的代码是只分配标题的字体types，而不是为其余的单元格
我怎么能够为表单中的所有单元格全局设置字体types？

public void exportToXLS(Object document) { HSSFWorkbook wb = (HSSFWorkbook) document; HSSFSheet sheet = wb.getSheetAt(0); wb.setSheetName(0, "report_lists"); // set sheet name sheet.shiftRows(0, sheet.getLastRowNum(), 4); // shifting the rows to HSSFRow header = sheet.getRow(4); header.getCell(1).setCellValue("Test Group"); header.getCell(2).setCellValue("Category"); HSSFRow firstrow = sheet.getRow(0); firstrow.createCell(0).setCellValue("Actuals"); SimpleDateFormat sdf = new SimpleDateFormat( "EEE MMM d HH:mm:ss 'CDT' yyyy "); Date date = new Date(); sdf.setTimeZone(TimeZone.getTimeZone("GMT-5")); String reportDate = sdf.format(date); HSSFRow thirdrow = sheet.getRow(3); thirdrow.createCell(0).setCellValue(reportDate); HSSFCellStyle cellStyle = wb.createCellStyle(); cellStyle.setFillForegroundColor(HSSFColor.YELLOW.index); cellStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); HSSFFont fontHeader = (HSSFFont) wb.createFont(); fontHeader.setFontName("Calibri"); cellStyle.setFont(fontHeader); System.out.println(" header.getPhysicalNumberOfCells();::::" + header.getPhysicalNumberOfCells()); //only for changing font for header for (int i = 0; i < header.getPhysicalNumberOfCells(); i++) { HSSFCell cell = header.getCell(i); cell.setCellStyle(cellStyle); // sheet.setDefaultColumnStyle(i, cellStyle); } System.out.println("sheet.getLastRowNum():::" + sheet.getLastRowNum()); for (int j = 1; j < sheet.getPhysicalNumberOfRows(); j++) { HSSFRow row = sheet.getRow(j); if (row != null) { System.out.println(" j>>>" + j); // you can add sysout or debug here to check if all row passed // successfully for (int i = 0; i < row.getPhysicalNumberOfCells(); i++) { HSSFCell cell = row.getCell(i); if (cell != null) { System.out.println(" i++" + i); // you can add sysout or debug here to check if all cell // passed successfully HSSFCell celll = header.getCell(i); celll.setCellStyle(cellStyle); } } } } } 

这里是excel的屏幕截图：

Answer 1

编辑你的代码就像这样：

 public void exportToXLS(Object document) { HSSFWorkbook wb = (HSSFWorkbook) document; HSSFSheet sheet = wb.getSheetAt(0); wb.setSheetName(0, "report_lists"); // set sheet name sheet.shiftRows(0, sheet.getLastRowNum(), 4); // shifting the rows to HSSFRow header = sheet.getRow(4); header.getCell(1).setCellValue("Test Group"); header.getCell(2).setCellValue("Category"); HSSFRow firstrow = sheet.getRow(0); firstrow.createCell(0).setCellValue("Actuals"); SimpleDateFormat sdf = new SimpleDateFormat( "EEE MMM d HH:mm:ss 'CDT' yyyy "); Date date = new Date(); sdf.setTimeZone(TimeZone.getTimeZone("GMT-5")); String reportDate = sdf.format(date); HSSFRow thirdrow = sheet.getRow(3); thirdrow.createCell(0).setCellValue(reportDate); HSSFCellStyle cellStyle = wb.createCellStyle(); cellStyle.setFillForegroundColor(HSSFColor.YELLOW.index); cellStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND); HSSFFont fontHeader = (HSSFFont) wb.createFont(); fontHeader.setFontName("Calibri"); cellStyle.setFont(fontHeader); System.out.println(" header.getPhysicalNumberOfCells();::::" + header.getPhysicalNumberOfCells()); //only for changing font for header //for (int i = 0; i < header.getPhysicalNumberOfCells(); i++) { // HSSFCell cell = header.getCell(i); // cell.setCellStyle(cellStyle); // sheet.setDefaultColumnStyle(i, cellStyle); //} you dont need this because the code bellow will change all style including header System.out.println("sheet.getLastRowNum():::" + sheet.getLastRowNum()); for (int j = 1; j < sheet.getPhysicalNumberOfRows(); j++) { HSSFRow row = sheet.getRow(j); if (row != null) { System.out.println(" j>>>" + j); // you can add sysout or debug here to check if all row passed // successfully for (int i = 0; i < row.getPhysicalNumberOfCells(); i++) { HSSFCell cell = row.getCell(i); if (cell != null) { System.out.println(" i++" + i); //HSSFCell celll = header.getCell(i); <<you also don't need this, this is the root of your problem, you choose to change header only instead of already declares cell cell.setCellStyle(cellStyle); } } } } }