【项目实战】Java POI之Excel导出经典案例二

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、创建Excel模板文档，如下：



2、在JSP页面添加按钮代码：

<button type="button" onclick="toPickUpExcel()" class="button button-primary button-small">导出到Excel</button>3、JS方法点击事件如下：
/* 导出到Excel */
function toPickUpExcel(){
var curpagenum = $('#contentGroupOrderTable').getGridParam('page');
$("#page").val(curpagenum);
var startTime=$('#startTime').val();
var endTime=$('#endTime').val();
var receiveMode=$('#receiveMode').val();
var groupCode=$('#groupCode').val();
var supplierName=$('#supplierName').val();

var orgIds=$('#orgIds').val();
var orgNames=$('#orgNames').val();
var operType=$('#operType').val();
var saleOperatorIds=$('#saleOperatorIds').val();
var saleOperatorName=$('#saleOperatorName').val();

var orderMode=$('#dicIds').val();
var remark=$('#remark').val();
var page=$('#page').val();
var pageSize=$('#pageSize').val();
var userRightType=$('#userRightType').val();

var guestName=$('#guestName').val();
var gender=$('#gender').val()
var ageFirst=$('#ageFirst').val()
var ageSecond=$('#ageSecond').val()
var nativePlace=$('#nativePlace').val()

window.location ='../taobao/toGroupOrderGuesExport.do?startTime='+startTime
+"&endTime="+endTime
+"&receiveMode="+receiveMode
+"&groupCode="+groupCode
+"&supplierName="+supplierName
+"&orgIds="+orgIds
+"&orgNames="+orgNames
+"&operType="+operType
+"&saleOperatorIds="+saleOperatorIds
+"&saleOperatorName="+saleOperatorName
+"&orderMode="+orderMode
+"&remark="+remark
+"&page="+page
+"&pageSize="+pageSize
+"&userRightType="+userRightType
+"&guestName="+guestName
+"&gender="+gender
+"&ageFirst="+ageFirst
+"&ageSecond="+ageSecond
+"&nativePlace="+nativePlace;
}一部分是获取查询的条件参数；另一部分是将参数通过请求传递到Controller方法中。
// 导出Export
@RequestMapping(value = "/toGroupOrderGuesExport.do")
@ResponseBody
public void toGroupOrderGuesExport(HttpServletRequest request, HttpServletResponse response,
String startTime,String endTime,String receiveMode,String groupCode,String supplierName,
String orgIds,String orgNames,String operType,String saleOperatorIds,String saleOperatorName,
String orderMode,String remark,Integer page,Integer pageSize,Integer userRightType,
String guestName,Integer gender,Integer ageFirst,Integer ageSecond,String nativePlace){

GroupOrder vo = new GroupOrder();
vo.setPage(page);
vo.setPageSize(pageSize);
vo.setStartTime(startTime);
vo.setEndTime(endTime);
vo.setRemark(remark);
vo.setGuestName(guestName);
vo.setOrderNo(orderMode);
vo.setGroupCode(groupCode);
vo.setSaleOperatorIds(saleOperatorIds);
vo.setOrgIds(orgIds);
vo.setOperType(Integer.valueOf(operType));
vo.setReceiveMode(receiveMode);
vo.setOrgNames(orgNames);
vo.setSaleOperatorName(saleOperatorName);
vo.setSupplierName(supplierName);
vo.setGender(gender);
vo.setAgeFirst(ageFirst);
vo.setAgeSecond(ageSecond);
vo.setNativePlace(nativePlace);
if (StringUtils.isBlank(vo.getSaleOperatorIds()) && StringUtils.isNotBlank(vo.getOrgIds())) {
Set<Integer> set = new HashSet<Integer>();
String[] orgIdArr = vo.getOrgIds().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("")) {
vo.setSaleOperatorIds(salesOperatorIds.substring(0, salesOperatorIds.length() - 1));
}
}
PageBean pageBean = new PageBean();
if (page == null) {
pageBean.setPage(1);
} else {
pageBean.setPage(page);
}
if (pageSize == null) {
pageBean.setPageSize(Constants.PAGESIZE);
} else {
pageBean.setPageSize(pageSize);
}
pageBean.setParameter(vo);
pageBean.setPage(page);

pageBean = groupOrderService.selectGroupOrderGuestListPage(pageBean, WebUtils.getCurBizId(request),
WebUtils.getDataUserIdSet(request),userRightType);
String path = "";
try {
String url = request.getSession().getServletContext().getRealPath("/template/excel/groupGuestContact.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

int index = 0;
Map map = null;

if (pageBean.getResult() != null && pageBean.getResult().size() > 0) {
for (int i = 0; i < pageBean.getResult().size(); i++) {
map = (HashMap) pageBean.getResult().get(i);
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");

row = sheet.createRow(index + 7);
addRow(row, cc, index, cellStyle, map, styleLeft, sdf);
index++;

}
}

if (pageBean.getTotalPage() > 1) {
for (int m = 2; m <= pageBean.getTotalPage(); m++) {
pageBean.setPage(m);
pageBean = groupOrderService.selectGroupOrderGuestListPage(pageBean, WebUtils.getCurBizId(request),
WebUtils.getDataUserIdSet(request),userRightType);
List list = pageBean.getResult();
if (list != null && list.size() > 0) {
for (int j = 0; j < list.size(); j++) {
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
map = (HashMap) pageBean.getResult().get(j);
row = sheet.createRow(index + 7);
addRow(row, cc, index, cellStyle, map, styleLeft, sdf);
index++;
}
}
}
}
/*
* Row to_v_row = sheet.createRow(2); Cell to_v_cc =
* to_v_row.createCell(1); to_v_cc.setCellValue("11");
* to_v_cc.setCellStyle(styleLeft);
*/

row = sheet.createRow(5);
cc = row.createCell(2);
cc.setCellValue("成员信息：" + "" + "共：" + (int) pageBean.getTotalCount() + "人");

CellRangeAddress groupInfo = new CellRangeAddress((int) pageBean.getTotalCount() + 11,
(int) pageBean.getTotalCount() + 12, 0, 4);
sheet.addMergedRegion(groupInfo);
row = sheet.createRow((int) pageBean.getTotalCount() + 11);
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("联系单.xlsx".getBytes("UTF-8"), "iso-8859-1");
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
}
download(path, fileName, request, response);

}其中的download下载方法实现代码如下：
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();
}
}

KO，搞定。看看效果：