Java导出Excel

model

private String name;
private String conName;
private String serialNo;
private float amount;
private Date createDate;
private Date date;
private String creator;

ExportModel

private SimpleDateFormat ymdDateFormat=new SimpleDateFormat("yyyy-MM-dd");
private NumberFormat nf=new DecimalFormat("0.00#");
private HSSFWorkbook workbook;
private HSSFSheet sheet;
private HSSFCellStyle titleStyle;
private HSSFFont titleFont;
private HSSFCellStyle contententStyle;
private HSSFFont contententFont;
private HSSFCellStyle headerStyle;
private HSSFFont headerFont;

public ModelExport(){
workbook = new HSSFWorkbook();// 声明一个工作薄
titleStyle = workbook.createCellStyle();
titleFont = workbook.createFont();// 生成表头字体
contententStyle = workbook.createCellStyle();
contententFont = workbook.createFont();
headerStyle = workbook.createCellStyle();
headerFont = workbook.createFont();
// 设置标题样式
headerStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
headerFont.setColor(HSSFColor.BLACK.index);
headerFont.setFontHeightInPoints((short) 14);
headerFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
// 把字体应用到当前的样式
headerStyle.setFont(headerFont);

titleStyle.setFillForegroundColor(HSSFColor.GREY_25_PERCENT.index);
titleStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
titleStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
titleStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);
titleFont.setColor(HSSFColor.BLACK.index);
titleFont.setFontHeightInPoints((short) 12);
titleFont.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);
titleStyle.setFont(titleFont);

contententStyle.setFillForegroundColor(HSSFColor.WHITE.index);
contententStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
contententStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);
contententStyle.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);

contententFont.setBoldweight(HSSFFont.BOLDWEIGHT_NORMAL);
contententStyle.setFont(contententFont);
}

public void exportExcel(String title, Model model, OutputStream out) throws IOException {
int rowIndex=0;
// 生成一个表格
sheet = workbook.createSheet(title);
// 设置表格默认列宽度为15个字节
sheet.setDefaultColumnWidth(25);
//标题
HSSFRow titleRow=sheet.createRow(rowIndex);
HSSFCell titleCell = titleRow.createCell(0);
titleCell.setCellValue(title);
titleCell.setCellStyle(headerStyle);
sheet.addMergedRegion(new CellRangeAddress(rowIndex,rowIndex,0,3));
rowIndex++;//增加一个空行
rowIndex++;

HSSFRow row2 = sheet.createRow(rowIndex);
HSSFCell companyTitle=row2.createCell(0);
companyTitle.setCellValue("积分而非：");
companyTitle.setCellStyle(titleStyle);
HSSFCell company=row2.createCell(1);
company.setCellValue(model.getName());
sheet.addMergedRegion(new CellRangeAddress(rowIndex,rowIndex,1,3));

rowIndex++;
HSSFRow row3 = sheet.createRow(rowIndex);
HSSFCell htNoTitle=row3.createCell(0);
htNoTitle.setCellValue("给开理发店：");
htNoTitle.setCellStyle(titleStyle);
HSSFCell htNo=row3.createCell(1);
htNo.setCellValue(vo.getSerialNo());
HSSFCell htNameTitle=row3.createCell(2);
htNameTitle.setCellValue("疾病和：");
htNameTitle.setCellStyle(titleStyle);
HSSFCell htName=row3.createCell(3);
htName.setCellValue(vo.getConName());

rowIndex++;
HSSFRow row4 = sheet.createRow(rowIndex);
HSSFCell htAmountTitle=row4.createCell(0);
htAmountTitle.setCellValue("逛了个：");
htAmountTitle.setCellStyle(titleStyle);
HSSFCell htAmount=row4.createCell(1);
htAmount.setCellValue(nf.format(vo.getAmount()));
HSSFCell signDateTitle=row4.createCell(2);
signDateTitle.setCellValue("基本函数：");
signDateTitle.setCellStyle(titleStyle);
HSSFCell signDate=row4.createCell(3);
signDate.setCellValue(ymdDateFormat.format(vo.getDate()));

rowIndex++;//插入一个空行
rowIndex++;
HSSFRow row5 = sheet.createRow(rowIndex);
HSSFCell prodTitle=row5.createCell(0);
prodTitle.setCellValue("我看个够");
prodTitle.setCellStyle(titleStyle);
HSSFCell cardTitle=row5.createCell(1);
cardTitle.setCellValue("讲个故事");
cardTitle.setCellStyle(titleStyle);
sheet.addMergedRegion(new CellRangeAddress(rowIndex,rowIndex,1,3));

Set<Entry<String, List<String>>> prodCardEntries=model.getProdCardsMap().entrySet();

for (Entry<String, List<String>> entry : prodCardEntries) {
rowIndex++;
String prod=entry.getKey();
List<String> cardNoList=entry.getValue();
int subCount=cardNoList.size();
for(int subRow=0;subRow<cardNoList.size();subRow++,rowIndex++){
HSSFRow cardRow=sheet.createRow(rowIndex);
if(subRow==0){//创建列
sheet.addMergedRegion(new CellRangeAddress(rowIndex,rowIndex+subCount-1,0,0));
HSSFCell prodCell=cardRow.createCell(0);
prodCell.setCellValue(prod);
prodCell.setCellStyle(contententStyle);
}

HSSFCell cardCell=cardRow.createCell(1);
cardCell.setCellValue(cardNoList.get(subRow));
sheet.addMergedRegion(new CellRangeAddress(rowIndex,rowIndex,1,3));
}
}

workbook.write(out);
}

Controller

@RequestMapping(params = "action=exportXls",method=RequestMethod.GET)
public void exportXls(HttpServletRequest request,HttpServletResponse response,Long id) {
Model model=ModelService.getModel(id);
if(model==null)return;
String filename=model.getSerialNo();
response.setContentType("application/vnd.ms-excel");
response.addHeader("Content-Disposition", "attachment;filename="+filename+".xls");
ExportModel export=new ExportModel();
try {
OutputStream out=response.getOutputStream();
export.exportExcel("过好几个就会更好", model, out);
} catch (IOException e) {
logger.error("导出过好几个就会更好失败", e);
}
}