public void exportExcel(Long activityId, HttpServletResponse response) throws IOException

{

// 获取统计报表信息

List productInfoList = reportDao.queryStatisticReport(activityId);

// 创建一个工作薄

HSSFWorkbook workbook = new HSSFWorkbook();

// 创建一个工作表sheet

HSSFSheet sheet = workbook.createSheet("统计报表");

// 设置单元格每列的宽度

sheet.setColumnWidth(0, 50 * 256);

sheet.setColumnWidth(1, 50 * 256);

sheet.setColumnWidth(2, 10 * 256);

// 表格信息内容的样式

HSSFCellStyle style = workbook.createCellStyle();

// 水平居中

style.setAlignment(HorizontalAlignment.CENTER);

// 垂直居中

style.setVerticalAlignment(VerticalAlignment.CENTER);

// 行数

int rowCount = 0;

// 第一行的标题行

HSSFRow row0 = sheet.createRow(rowCount++);

// 列表格

HSSFCell cell_title = row0.createCell(0);

cell_title.setCellValue("统计报表");

// 标题样式

HSSFCellStyle style_title = workbook.createCellStyle();

style_title.setAlignment(HorizontalAlignment.CENTER);

style_title.setVerticalAlignment(VerticalAlignment.CENTER);

//设置字体样式

HSSFFont font = workbook.createFont();

//字号

font.setFontHeightInPoints((short) 16);

// 红色字体

font.setColor(HSSFFont.COLOR_RED);

style_title.setFont(font);

cell_title.setCellStyle(style_title);

sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, 2));

// 第二行的表头

HSSFRow row1 = sheet.createRow(rowCount++);

// 表头样式

HSSFCellStyle style_header = workbook.createCellStyle();

style_header.setAlignment(HorizontalAlignment.CENTER);

style_header.setVerticalAlignment(VerticalAlignment.CENTER);

style_header.setFillForegroundColor(new HSSFColor.SKY_BLUE().getIndex());

style_header.setFillPattern(FillPatternType.SOLID_FOREGROUND);

// 列表格

HSSFCell cell_header0 = row1.createCell(0);

cell_header0.setCellValue("展示商品名称");

cell_header0.setCellStyle(style_header);

HSSFCell cell_header1 = row1.createCell(1);

cell_header1.setCellValue("SKU商品名称");

cell_header1.setCellStyle(style_header);

HSSFCell cell_header2 = row1.createCell(2);

cell_header2.setCellValue("数量");

cell_header2.setCellStyle(style_header);

if (!StringUtils.isEmpty(productInfoList))

{

for (ProductInfo productInfo : productInfoList)

{

List sbomInfoList = productInfo.getSbomInfoList();

for (int i = 0; i < sbomInfoList.size(); i++)

{

// 行表格

HSSFRow row = sheet.createRow(rowCount);

SbomInfo sbomInfo = sbomInfoList.get(i);

if (i == 0)

{

// 列表格

HSSFCell cell0 = row.createCell(0);

cell0.setCellValue(productInfo.getDisPrdName());

cell0.setCellStyle(style);

// 含有2个以上数据的,则需要合并单元格

if (sbomInfoList.size() > 1)

{

sheet.addMergedRegion(new CellRangeAddress(rowCount, rowCount + sbomInfoList.size() - 1, 0, 0));

}

}

// 列表格

HSSFCell cell1 = row.createCell(1);

cell1.setCellValue(sbomInfo.getSbomName());

cell1.setCellStyle(style);

// 列表格

HSSFCell cell2 = row.createCell(2);

cell2.setCellValue(sbomInfo.getNumber());

cell2.setCellStyle(style);

// 行数增1

rowCount = rowCount + 1;

}

}

}

// 设置文件名

String fileName = "统计报表.xls";

response.setContentType("application/vnd.ms-excel");

response.setHeader("Content-disposition", "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));

response.setHeader("Pragma", "No-cache");

OutputStream outputStream = response.getOutputStream();

workbook.write(outputStream);

outputStream.flush();

outputStream.close();

workbook.close();

}

导出Excel表格：