1.效果圖

2.Java程式碼

/**
	 * 
	* @Title: exportExcel 
	* @Description: 匯出excel
	* @param request
	* @param response
	* @return
	* @throws Exception 
	* @author 大都督
	* @date 2018年11月30日
	* @return String
	 */
	@RequestMapping(value = "/export_excel", method = RequestMethod.GET)
    public String exportExcel(HttpServletRequest request, HttpServletResponse response) throws Exception{
		
        return poiService.exportExcel(response);
	}
 

@Override
	public String exportExcel(HttpServletResponse response) throws Exception {
			HSSFWorkbook wb = new HSSFWorkbook();
			String sheetName = "測試";
			HSSFSheet sheet = wb.createSheet(sheetName);
			HSSFCellStyle style = wb.createCellStyle();
			style.setAlignment(HSSFCellStyle.ALIGN_CENTER); // 建立一個居中格式
			sheet.setDefaultColumnWidth(15);
			
			//合併單元格（行開始，行結束，列開始，列結束）從零開始
			sheet.addMergedRegion(new CellRangeAddress(0,0,0,8));
			sheet.addMergedRegion(new CellRangeAddress(1,1,1,8));
			sheet.addMergedRegion(new CellRangeAddress(2,2,1,2));
			sheet.addMergedRegion(new CellRangeAddress(2,2,3,4));
			sheet.addMergedRegion(new CellRangeAddress(2,2,5,8));
			sheet.addMergedRegion(new CellRangeAddress(3,3,1,8));
			
			sheet.addMergedRegion(new CellRangeAddress(4,7,0,0));
			sheet.addMergedRegion(new CellRangeAddress(5,7,1,1));
			sheet.addMergedRegion(new CellRangeAddress(5,7,2,2));
			sheet.addMergedRegion(new CellRangeAddress(5,7,8,8));
			
			HSSFRow row = null;
			HSSFCell cell = null;
			//第1行
			row = sheet.createRow(0);
			//第1行-第1列
			cell = row.createCell(0);
			cell.setCellValue("A1-I1");
			cell.setCellStyle(style);
			//第2行
			row = sheet.createRow(1);
			//第2行-第1列
			cell = row.createCell(0);
			cell.setCellValue("A2");
			cell.setCellStyle(style);
			cell = row.createCell(1);
			cell.setCellValue("B2-I2");
			cell.setCellStyle(style);
			//第3行
			row = sheet.createRow(2);
			//第3行-第1列
			cell = row.createCell(0);
			cell.setCellValue("A3");
			cell.setCellStyle(style);
			//第3行-第2列
			cell = row.createCell(1);
			cell.setCellValue("B3-C3");
			cell.setCellStyle(style);
			//第3行-第3列
			cell = row.createCell(3);
			cell.setCellValue("D3-E3");
			cell.setCellStyle(style);
			//第3行-第4列
			cell = row.createCell(5);
			cell.setCellValue("F3-I3");
			cell.setCellStyle(style);
			//第4行
			row = sheet.createRow(3);
			//第4行-第1列
			cell = row.createCell(0);
			cell.setCellValue("A4");
			cell.setCellStyle(style);
			//第4行-第2列
			cell = row.createCell(1);
			cell.setCellValue("B4-I4");
			cell.setCellStyle(style);
			//第5行
			row = sheet.createRow(4);
			cell = row.createCell(0);
			cell.setCellValue("A5-A8");
			cell.setCellStyle(style);
			
			cell = row.createCell(1);
			cell.setCellValue("姓名");
			cell.setCellStyle(style);
			
			cell = row.createCell(2);
			cell.setCellValue("電話");
			cell.setCellStyle(style);
			
			cell = row.createCell(3);
			cell.setCellValue("");
			cell.setCellStyle(style);
			
			cell = row.createCell(4);
			cell.setCellValue("一級");
			cell.setCellStyle(style);
			
			cell = row.createCell(5);
			cell.setCellValue("特約");
			cell.setCellStyle(style);
			
			cell = row.createCell(6);
			cell.setCellValue("品牌");
			cell.setCellStyle(style);
			
			cell = row.createCell(7);
			cell.setCellValue("零售");
			cell.setCellStyle(style);
			
			cell = row.createCell(8);
			cell.setCellValue("總金額");
			cell.setCellStyle(style);
			
			int i = 0, num = 4;
			row = sheet.createRow(i+num);
			cell = row.createCell(0);
			cell.setCellValue("A5-A8");
			cell.setCellStyle(style);
			
			cell = row.createCell(1);
			cell.setCellValue("B5");
			cell.setCellStyle(style);
			
			cell = row.createCell(2);
			cell.setCellValue("C5");
			cell.setCellStyle(style);
			
			cell = row.createCell(3);
			cell.setCellValue("D5");
			cell.setCellStyle(style);
			
			cell = row.createCell(4);
			cell.setCellValue("E5");
			cell.setCellStyle(style);
			
			cell = row.createCell(5);
			cell.setCellValue("F5");
			cell.setCellStyle(style);
			
			cell = row.createCell(6);
			cell.setCellValue("G5");
			cell.setCellStyle(style);
			
			cell = row.createCell(7);
			cell.setCellValue("H5");
			cell.setCellStyle(style);
			
			cell = row.createCell(8);
			cell.setCellValue("I5");
			cell.setCellStyle(style);
			
			//第i+5行
			row = sheet.createRow(i+num+1);
			cell = row.createCell(1);
			cell.setCellValue("B6-B8");
			cell.setCellStyle(style);
			
			cell = row.createCell(2);
			cell.setCellValue("C6-C8");
			cell.setCellStyle(style);
			
			cell = row.createCell(3);
			cell.setCellValue("D6");
			cell.setCellStyle(style);
			
			cell = row.createCell(4);
			cell.setCellValue("E6");
			cell.setCellStyle(style);
			
			cell = row.createCell(5);
			cell.setCellValue("F6");
			cell.setCellStyle(style);
			
			cell = row.createCell(6);
			cell.setCellValue("G6");
			cell.setCellStyle(style);
			
			cell = row.createCell(7);
			cell.setCellValue("H6");
			cell.setCellStyle(style);
			
			cell = row.createCell(8);
			cell.setCellValue("I6-I8");
			cell.setCellStyle(style);
			
			//第i+6行
			row = sheet.createRow(i+num+2);
			cell = row.createCell(3);
			cell.setCellValue("D7");
			cell.setCellStyle(style);
			
			cell = row.createCell(4);
			cell.setCellValue("E7");
			cell.setCellStyle(style);
			
			cell = row.createCell(5);
			cell.setCellValue("F7");
			cell.setCellStyle(style);
			
			cell = row.createCell(6);
			cell.setCellValue("G7");
			cell.setCellStyle(style);
			
			cell = row.createCell(7);
			cell.setCellValue("H7");
			cell.setCellStyle(style);
			
			//第i+7行
			row = sheet.createRow(i+num+3);
			cell = row.createCell(3);
			cell.setCellValue("D8");
			cell.setCellStyle(style);
			
			cell = row.createCell(4);
			cell.setCellValue("E8");
			cell.setCellStyle(style);
			
			cell = row.createCell(5);
			cell.setCellValue("F8");
			cell.setCellStyle(style);
			
			cell = row.createCell(6);
			cell.setCellValue("G8");
			cell.setCellStyle(style);
			
			cell = row.createCell(7);
			cell.setCellValue("H8");
			cell.setCellStyle(style);
				
		
           ByteArrayOutputStream os = new ByteArrayOutputStream();
        try {
            wb.write(os);
        } catch (IOException e) {
            e.printStackTrace();
        }
        byte[] content = os.toByteArray();
        InputStream is = new ByteArrayInputStream(content);
        // 設定response引數，可以開啟下載頁面
        response.reset();
        response.setContentType("application/vnd.ms-excel;charset=utf-8");
        response.setHeader("Content-Disposition", "attachment;filename=" + new String((sheetName).getBytes(), "iso-8859-1"));
        ServletOutputStream out = response.getOutputStream();
        BufferedInputStream bis = null;
        BufferedOutputStream bos = null;
        try {
            bis = new BufferedInputStream(is);
            bos = new BufferedOutputStream(out);
            byte[] buff = new byte[2048];
            int bytesRead;
            // Simple read/write loop.
            while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
                bos.write(buff, 0, bytesRead);
            }
        } catch (final IOException e) {
            throw e;
        } finally {
            if (bis != null)
                bis.close();
            if (bos != null)
                bos.close();
        }
		return null;
	}
 

開啟瀏覽器直接訪問該介面地址即可自動生成excel表格