Excel导出之多工作表导出
导出是我们工作中长遇到的一个问题，我分享记录一下我最近做的excel 多个工作表导出，
/**
* 课题五 导出详情
* @param response
* @return
*/
@RequestMapping(value = "exportFiveDetail", method = RequestMethod.GET)
public Json exportFiveDetail(HttpServletResponse response) {
Map map = uploadExclBiz.getFiveDetail();
ExcelUtil excelUtil =new ExcelUtil();
ByteArrayOutputStream out = new ByteArrayOutputStream();
List parm = getListExcelParm(map,out);
excelUtil.exportExcelMany(parm);
String title ="课题五评分详情";
try {
byte[] content = out.toByteArray();
InputStream is = new ByteArrayInputStream(content);
response.reset();
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8");
response.setHeader("Content-Disposition", "attachment;filename=" + new String((title + ".xlsx").getBytes(), "ISO-8859-1"));
ServletOutputStream outputStream = response.getOutputStream();
BufferedInputStream bis = new BufferedInputStream(is);
BufferedOutputStream bos = new BufferedOutputStream(outputStream);
byte[] buff = new byte[2048];
int bytesRead;
while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {
bos.write(buff, 0, bytesRead);
}
bis.close();
bos.close();
outputStream.flush();
outputStream.close();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (IOException ee) {
ee.printStackTrace();
}
return Json.SUCCESS().setMessage("导出成功");
}
Map是获取四个对象列表，对应我要导出的四个工作表数据
下面是excel 工具类
/**
* 导出excel
*/
public void exportExcelMany(List list) {
if (list.get(0).getDatePattern() == null) {
String datePattern = DEFAULT_DATE_PATTERN;
//工作簿 指定最多访问多少行。 创建excel
SXSSFWorkbook workbook = new SXSSFWorkbook(10000);
//设置临时文件是否被压缩
workbook.setCompressTempFiles(true);
//创建一个新的单元格样式并添加到工作薄的样式表中
CellStyle titleStyle = workbook.createCellStyle();
//设置单元格的水平对齐方式 。
titleStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
//单元格内容的中对齐
titleStyle.setAlignment(HSSFCellStyle.VERTICAL_CENTER);
//创建一个新的字体并添加 到工作薄的字体样式表中；
Font font = workbook.createFont();
font.setFontHeightInPoints((short) 20);
font.setBoldweight((short) 70);
titleStyle.setFont(font);
CellStyle cellStyle = workbook.createCellStyle();
cellStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
cellStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN);
cellStyle.setBorderLeft(HSSFCellStyle.BORDER_THIN);
cellStyle.setBorderRight(HSSFCellStyle.BORDER_THIN);
cellStyle.setBorderTop(HSSFCellStyle.BORDER_THIN);
cellStyle.setAlignment(HSSFCellStyle.ALIGN_LEFT);
Font headerFont = workbook.createFont();
headerFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
cellStyle.setFont(headerFont);
for(ExcelParmDto epd : list){
//创建工作表
SXSSFSheet sheet = (SXSSFSheet) workbook.createSheet();
// 设置工作表名称
workbook.setSheetName(epd.getSheetNum(),epd.getSheetTitle());
logger.info("工作表个数 workbook.getNumberOfSheets() :" + workbook.getNumberOfSheets());
logger.info("工作表dang当前位置 :" + workbook.getSheetIndex(sheet));
int minBytes = epd.getColWidth() < DEFAULT_COLOUMN_WIDTH ? DEFAULT_COLOUMN_WIDTH : epd.getColWidth();
int[] arrColWidth = new int[epd.getHeadMap().size()];
String[] properties = new String[epd.getHeadMap().size()];
String[] headers = new String[epd.getHeadMap().size()];
int ii = 0;
for (Iterator iter = epd.getHeadMap().keySet().iterator(); iter.hasNext(); ) {
String filedName = iter.next();
properties[ii] = filedName;
headers[ii] = epd.getHeadMap().get(filedName);
int bytes = filedName.getBytes().length;
arrColWidth[ii] = bytes < minBytes ? minBytes : bytes;
sheet.setColumnWidth(ii, arrColWidth[ii] * 200);
// sheet.setColumnWidth(ii,120);
ii++;
}
int rowIndex = 0;
for (Object obj : epd.getJsonArray()) {
if (rowIndex == 65535 || rowIndex == 0) {
if (rowIndex != 0)
sheet = (SXSSFSheet) workbook.createSheet();
SXSSFRow titleRow = (SXSSFRow) sheet.createRow(0);
titleRow.createCell(0).setCellValue(epd.getTitle());
titleRow.getCell(0).setCellStyle(titleStyle);
sheet.addMergedRegion(new CellRangeAddress(0, 0, 0, epd.getHeadMap().size() - 1));
// 第三步 创建行
SXSSFRow headerRow = (SXSSFRow) sheet.createRow(1);
for (int i = 0; i < headers.length; i++) {
//第四步 创建列
headerRow.createCell(i).setCellValue(headers[i]);
if (i > 3) {
sheet.setColumnWidth(i, arrColWidth[i] * 500);
}
// headerRow.getCell(i).setCellStyle(cellStyle);}
rowIndex = 2;
}
if (headers.length == 8) {
for (int i = 0; i < headers.length; i++) {
headerRow.createCell(i).setCellValue(headers[i]);
sheet.setColumnWidth(i, arrColWidth[i] * 512);
rowIndex = 2;
}
}
}
JSONObject jo = (JSONObject) JSONObject.toJSON(obj);
SXSSFRow dataRow = (SXSSFRow) sheet.createRow(rowIndex);
// 第五步 设置值
for (int i = 0; i < properties.length; i++) {
SXSSFCell newCell = (SXSSFCell) dataRow.createCell(i);
Object o = jo.get(properties[i]);
String cellValue = "";
if (o == null) {
cellValue = "";
} else if (o instanceof Date) {
cellValue = new SimpleDateFormat(datePattern).format(o);
} else {
cellValue = o.toString();
}
newCell.setCellValue(cellValue);
// newCell.setCellStyle(cellStyle);
}
rowIndex++;
}
}
try {
workbook.write(list.get(0).getOut());
// workbook.write(list.get(1).getOut());
} catch (IOException e) {
e.printStackTrace();
}
}
}
导出效果：
