【项目实战】Java POI之Excel导出经典案例四

该案例的实现和【项目实战】Java
POI之Excel导出经典案例一类似，点击【导出Excel】按钮进行操作。

1、首先创建Excel文档模板：



2、在JSP中添加【导出Excel】按钮，代码如下：

<a href="javascript:void(0);"  target="_blank" onclick="excelProductProfit()" class="button button-primary button-small">导出到Excel</a>

3、在JS中实现点击事件：

/* 导出到Excel */
function excelProductProfit(){
window.location = "excelProductProfit.do?startMin="+$("#startMin").val()
+"&startMax="+$("#startMax").val()
+"&productName="+$("#productName").val()
+"&supplierName="+$("#supplierName").val()
+"&orgIds="+$("#orgIds").val()
+"&operatorIds="+$("#operatorIds").val()
+"&operType="+$("#operType").val()
+"&orderNo="+$("#dicIds").val();
}

4、Java后台Controller实现代码方法如下：

@RequestMapping(value = "/excelProductProfit.do")
@ResponseBody
public void excelProductProfit(HttpServletRequest request, HttpServletResponse response, String startMin,String startMax,String productName,String supplierName,Integer operType,
String orderNo,String operatorIds,String orgIds) {
List<DicInfo> typeList = dicService.getListByTypeCode(BasicConstants.SALES_TEAM_TYPE,
WebUtils.getCurBizId(request));
PageBean<GroupOrder> pageBean = new PageBean<GroupOrder>();
Map<String, Object> pm = new HashMap<String, Object>();
pm.put("startMin", startMin);
pm.put("startMax", startMax);
pm.put("productName", productName);
pm.put("supplierName", supplierName);
pm.put("orderNo", orderNo);
pm.put("operatorIds", operatorIds);
pm.put("operType", operType);
pm.put("set", WebUtils.getDataUserIdSet(request));
if (orgIds != null && StringUtils.isNotBlank(orgIds.toString())) {
Set<Integer> set = new HashSet<Integer>();
String[] orgIdArr = orgIds.toString().split(",");
for (String orgIdStr : orgIdArr) {
set.add(Integer.valueOf(orgIdStr));
}
set = platformEmployeeService.getUserIdListByOrgIdList(WebUtils.getCurBizId(request), set);
String salesOperatorIds = "";
for (Integer usrId : set) {
salesOperatorIds += usrId + ",";
}
if (!salesOperatorIds.equals("")) {
pm.put("saleOperatorIds", salesOperatorIds.substring(0, salesOperatorIds.length() - 1));
}
}
pageBean.setParameter(pm);
pageBean.setPage(1);
pageBean.setPageSize(10000);
pageBean = groupOrderService.selectProductProfitStatisticsListPage(pageBean, WebUtils.getCurBizId(request));
List<GroupOrder> orders=pageBean.getResult();
String path = "";

try {
String url = request.getSession().getServletContext()
.getRealPath("/template/excel/ProductProfitStatistics.xlsx");
FileInputStream input = new FileInputStream(new File(url)); // 读取的文件路径
XSSFWorkbook wb = new XSSFWorkbook(new BufferedInputStream(input));
XSSFFont createFont = wb.createFont();
createFont.setFontName("微软雅黑");
createFont.setBoldweight(XSSFFont.BOLDWEIGHT_BOLD);// 粗体显示
createFont.setFontHeightInPoints((short) 12);

XSSFFont tableIndex = wb.createFont();
tableIndex.setFontName("宋体");
tableIndex.setFontHeightInPoints((short) 11);

CellStyle cellStyle = wb.createCellStyle();
cellStyle.setBorderBottom(CellStyle.BORDER_THIN); // 下边框
cellStyle.setBorderLeft(CellStyle.BORDER_THIN);// 左边框
cellStyle.setBorderTop(CellStyle.BORDER_THIN);// 上边框
cellStyle.setBorderRight(CellStyle.BORDER_THIN);// 右边框
cellStyle.setAlignment(CellStyle.ALIGN_CENTER); // 居中

CellStyle styleFontCenter = wb.createCellStyle();
styleFontCenter.setBorderBottom(CellStyle.BORDER_THIN); // 下边框
styleFontCenter.setBorderLeft(CellStyle.BORDER_THIN);// 左边框
styleFontCenter.setBorderTop(CellStyle.BORDER_THIN);// 上边框
styleFontCenter.setBorderRight(CellStyle.BORDER_THIN);// 右边框
styleFontCenter.setAlignment(CellStyle.ALIGN_CENTER); // 居中
styleFontCenter.setFont(createFont);

CellStyle styleFontTable = wb.createCellStyle();
styleFontTable.setBorderBottom(CellStyle.BORDER_THIN); // 下边框
styleFontTable.setBorderLeft(CellStyle.BORDER_THIN);// 左边框
styleFontTable.setBorderTop(CellStyle.BORDER_THIN);// 上边框
styleFontTable.setBorderRight(CellStyle.BORDER_THIN);// 右边框
styleFontTable.setAlignment(CellStyle.ALIGN_CENTER); // 居中
styleFontTable.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
styleFontTable.setFillPattern(CellStyle.SOLID_FOREGROUND);

CellStyle styleLeft = wb.createCellStyle();
styleLeft.setBorderBottom(CellStyle.BORDER_THIN); // 下边框
styleLeft.setBorderLeft(CellStyle.BORDER_THIN);// 左边框
styleLeft.setBorderTop(CellStyle.BORDER_THIN);// 上边框
styleLeft.setBorderRight(CellStyle.BORDER_THIN);// 右边框
styleLeft.setAlignment(CellStyle.ALIGN_LEFT); // 居左

CellStyle styleRight = wb.createCellStyle();
styleRight.setBorderBottom(CellStyle.BORDER_THIN); // 下边框
styleRight.setBorderLeft(CellStyle.BORDER_THIN);// 左边框
styleRight.setBorderTop(CellStyle.BORDER_THIN);// 上边框
styleRight.setBorderRight(CellStyle.BORDER_THIN);// 右边框
styleRight.setAlignment(CellStyle.ALIGN_RIGHT); // 居右
Sheet sheet = wb.getSheetAt(0); // 获取到第一个sheet
Row row = null;
Cell cc = null;
// 遍历集合数据，产生数据行
Iterator<GroupOrder> it = orders.iterator();
int index = 0;
while (it.hasNext()) {
GroupOrder order = it.next();
String orderMode1 = "";
for (DicInfo item : typeList) {
if (item.getId().equals( order.getOrderMode())) {
orderMode1 = item.getValue();
}
}
row = sheet.createRow(index + 2);
cc = row.createCell(0);
cc.setCellValue(index + 1);
cc.setCellStyle(cellStyle);
cc = row.createCell(1);
cc.setCellValue(orderMode1);
cc.setCellStyle(styleLeft);
cc = row.createCell(2);
cc.setCellValue(order.getSupplierName());
cc.setCellStyle(styleLeft);
cc = row.createCell(3);
cc.setCellValue(order.getProductName());
cc.setCellStyle(styleLeft);
cc = row.createCell(4);
cc.setCellValue(order.getNumAdult() == null ? 0 : order.getNumAdult());
cc.setCellStyle(styleLeft);
cc = row.createCell(5);
cc.setCellValue(order.getNumChild() == null ? 0 : order.getNumChild());
cc.setCellStyle(styleLeft);
cc = row.createCell(6);
cc.setCellValue(order.getTotalIncome() == null ? 0 : order.getTotalIncome().doubleValue());
cc.setCellStyle(styleLeft);
cc = row.createCell(7);
cc.setCellValue(order.getOtherTotal() == null ? 0 : order.getOtherTotal().doubleValue());
cc.setCellStyle(cellStyle);
cc = row.createCell(8);
cc.setCellValue(order.getTotalCost() == null ? 0 : order.getTotalCost().doubleValue());
cc.setCellStyle(cellStyle);
cc = row.createCell(9);
cc.setCellValue(((order.getTotalIncome().add(order.getOtherTotal())).subtract(order.getTotalCost())).doubleValue());
cc.setCellStyle(cellStyle);
index++;

}
List<String> list = getTotal(orders);
row = sheet.createRow(orders.size() + 2); // 加合计行
cc = row.createCell(0);
cc.setCellStyle(styleRight);
cc = row.createCell(1);
cc.setCellStyle(styleRight);
cc = row.createCell(2);
cc.setCellStyle(styleRight);
cc = row.createCell(3);
cc.setCellValue("合计：");
cc.setCellStyle(styleRight);
cc = row.createCell(4);
cc.setCellValue(list.get(0));
cc.setCellStyle(styleRight);
cc = row.createCell(5);
cc.setCellValue(list.get(1));
cc.setCellStyle(styleRight);
cc = row.createCell(6);
cc.setCellValue(list.get(13));
cc.setCellStyle(styleRight);
cc = row.createCell(7);
cc.setCellValue(list.get(10));
cc.setCellStyle(styleRight);
cc = row.createCell(8);
cc.setCellValue(list.get(14));
cc.setCellStyle(styleRight);
cc = row.createCell(9);
cc.setCellValue(list.get(15));
cc.setCellStyle(cellStyle);
CellRangeAddress region = new CellRangeAddress(orders.size() + 3, orders.size() + 4, 0, 9);
sheet.addMergedRegion(region);
row = sheet.createRow(orders.size() + 3);
cc = row.createCell(0);
cc.setCellValue("打印人：" + WebUtils.getCurUser(request).getName() + " 打印时间："
+ DateUtils.format(new Date(), "yyyy-MM-dd HH:mm:ss"));
path = request.getSession().getServletContext().getRealPath("/") + "/download/" + System.currentTimeMillis()
+ ".xlsx";
FileOutputStream out = new FileOutputStream(path);
wb.write(out);
out.close();
wb.close();
} catch (Exception e) {
e.printStackTrace();
}
String fileName = "";
try {
fileName = new String("统计表.xlsx".getBytes("UTF-8"), "iso-8859-1");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
download(path, fileName, request, response);
}

downLoad方法实现如下：

private void download(String path, String fileName, HttpServletRequest request, HttpServletResponse response) {
try {
// path是指欲下载的文件的路径。
File file = new File(path);
// 以流的形式下载文件。
InputStream fis = new BufferedInputStream(new FileInputStream(path));
byte[] buffer = new byte[fis.available()];
fis.read(buffer);
fis.close();
// 清空response
response.reset();

/*
* //解决IE浏览器下下载文件名乱码问题 if
* (request.getHeader("USER-AGENT").indexOf("msie") > -1){ fileName
* = new URLEncoder().encode(fileName) ; }
*/
// 设置response的Header
response.addHeader("Content-Disposition", "attachment;filename=" + fileName);
response.addHeader("Content-Length", "" + file.length());
OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
response.setContentType("application/vnd.ms-excel;charset=gb2312");
toClient.write(buffer);
toClient.flush();
toClient.close();
file.delete();
} catch (IOException ex) {
ex.printStackTrace();
}
}

5、最终效果如下:



KO，功能实现完成！！！