使用SpringBoot实现excel生成和下载，生成模板如下
controller
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@RequestMapping(value = { "/downloadExcelTemplate" }, method = RequestMethod.GET) public String downloadExcelTemplate(HttpSession httpSession, HttpServletResponse response) { try { dealExcelService.downloadExcelTemplate(response); return "success"; } catch (Exception e) { logger.error("downloadExcelTemplate_error", e); return "failure"; }} |
service
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public void downloadExcelTemplate(HttpServletResponse response) throws Exception { //文件名 SimpleDateFormat format3 = new SimpleDateFormat("yyyyMMddHHmm"); String fileName = new String(("文件名" + format3.format(new Date()) + "导入模板").getBytes(), "ISO8859_1"); //配置请求头 ServletOutputStream outputStream = response.getOutputStream(); // 组装附件名称和格式 response.setHeader("Content-disposition", "attachment; filename=" + fileName + ".xlsx"); // 创建一个workbook 对应一个excel应用文件 XSSFWorkbook workBook = new XSSFWorkbook(); // 在workbook中添加一个sheet,对应Excel文件中的sheet XSSFSheet sheet = workBook.createSheet("模板"); ExportUtil exportUtil = new ExportUtil(workBook, sheet); XSSFCellStyle headStyle = exportUtil.getHeadStyle(); XSSFCellStyle bodyStyle = exportUtil.getBodyStyle2(); // 构建表头 XSSFRow headRow = ExportUtil.createRow(sheet, 0); XSSFCell cell; String[] titles = {"表头一", "表头二", "表头三"}; int index = 0; for (String title : titles) { cell = ExportUtil.createCell(headRow, index); cell.setCellStyle(headStyle); cell.setCellValue(title); index++; } try { workBook.write(outputStream); outputStream.flush(); outputStream.close(); } catch (IOException e) { e.printStackTrace(); } finally { try { outputStream.close(); } catch (IOException e) { e.printStackTrace(); } }} |
ExportUtil导出工具类
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package com.shengsheng.utils; import org.apache.poi.hssf.util.HSSFColor;import org.apache.poi.ss.util.CellRangeAddress;import org.apache.poi.xssf.usermodel.*; /** * excel 表格导出工具类 * * @author shengshenglalala */public class ExportUtil { private XSSFWorkbook wb; private XSSFSheet sheet; /** * @param wb * @param sheet */ public ExportUtil(XSSFWorkbook wb, XSSFSheet sheet) { this.wb = wb; this.sheet = sheet; } /** * 合并单元格后给合并后的单元格加边框 * * @param region * @param cs */ public void setRegionStyle(CellRangeAddress region, XSSFCellStyle cs) { int toprowNum = region.getFirstRow(); for (int i = toprowNum; i <= region.getLastRow(); i++) { XSSFRow row = sheet.getRow(i); for (int j = region.getFirstColumn(); j <= region.getLastColumn(); j++) { XSSFCell cell = row.getCell(j); cell.setCellStyle(cs); } } } /** * 设置表头的单元格样式 * * @return */ public XSSFCellStyle getHeadStyle() { // 创建单元格样式 XSSFCellStyle cellStyle = wb.createCellStyle(); // // 设置单元格的背景颜色为淡蓝色 cellStyle.setFillForegroundColor(HSSFColor.PALE_BLUE.index); cellStyle.setFillPattern(XSSFCellStyle.SOLID_FOREGROUND); // 设置单元格居中对齐 cellStyle.setAlignment(XSSFCellStyle.ALIGN_CENTER); // 设置单元格垂直居中对齐 cellStyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_CENTER); // 创建单元格内容显示不下时自动换行 // cellStyle.setWrapText(true); // 设置单元格字体样式 XSSFFont font = wb.createFont(); // 设置字体加粗 font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD); font.setFontName("宋体"); // font.setFontHeight((short) 200); cellStyle.setFont(font); // 设置单元格边框为细线条// cellStyle.setBorderLeft(XSSFCellStyle.BORDER_THIN);// cellStyle.setBorderBottom(XSSFCellStyle.BORDER_THIN);// cellStyle.setBorderRight(XSSFCellStyle.BORDER_THIN);// cellStyle.setBorderTop(XSSFCellStyle.BORDER_THIN); return cellStyle; } /** * 设置表体的单元格样式 * * @return */ public XSSFCellStyle getBodyStyle2() { // 创建单元格样式 // 创建单元格样式 XSSFCellStyle cellStyle = wb.createCellStyle(); // 创建单元格内容显示不下时自动换行 // cellStyle.setWrapText(true); // 设置单元格字体样式 XSSFFont font = wb.createFont(); // 设置字体加粗 // font.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD); font.setFontName("宋体"); font.setFontHeight((short) 200); font.setColor(HSSFColor.BLACK.index); cellStyle.setFont(font); // 设置单元格边框为细线条 return cellStyle; } /** * 没有行，就创建行 * * @param sheet * @param index * @return */ public static XSSFRow createRow(XSSFSheet sheet, Integer index) { XSSFRow row = sheet.getRow(index); if (row == null) { return sheet.createRow(index); } return row; } /** * 如果没有列，就创建列 * * @param row * @param index * @return */ public static XSSFCell createCell(XSSFRow row, Integer index) { XSSFCell cell = row.getCell(index); if (cell == null) { return row.createCell(index); } return cell; }} |
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原文链接：https://blog.csdn.net/shengshenglalalala/article/details/113744729
