JXLS模板导出EXCEL
JXLS模板导出EXCEL
最近做要做一些报表导出的功能，由于表格内容比较复杂，直接生成excel比较麻烦，所以采用模板的方式来做，可惜自己不了解，也证明了自己技术有多差！通过多次资料，终于找到了适合自己的方法。特此记录，方便以后查找。
maven用到的包
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1.0
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1.0
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Service代码
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public
void
exportChargeCount(String yearMonth, String buildId, HttpServletRequest request,HttpServletResponse response)
{
String templateFile = request.getSession().getServletContext().getRealPath(
"/"
)+
"/doc/reportTmp/billingInfo.xls"
;
Date date = BillingDateUtil.getBillingEndTime(Integer.valueOf(yearMonth.substring(
0
,
4
)),Integer.valueOf(yearMonth.substring(
5
,
7
)));
String buildName = dataCenter.getBuildInfoById(buildId).getBuildName();
String fileName = buildName+
"("
+yearMonth+
")客户汇总报表.xls"
;
List
this
.reportDao.getChargeCount(DateUtil.getFormatNormal(date), buildId);
Map
new
HashMap<>();
XLSTransformer transformer =
new
XLSTransformer();
float
sumMoney =
0
;
for
(ChargeCountVO chargeCountVO : list) {
sumMoney += chargeCountVO.getEnergyMoney();
}
context.put(
"billingList"
, list);
context.put(
"sumMoney"
, sumMoney);
context.put(
"billingDate"
, yearMonth);
context.put(
"buildName"
,buildName );
try
{
response.setContentType(
"application/vnd.ms-excel"
);
response.setHeader(
"Content-disposition"
,
"attachment;filename="
+
new
String( fileName.getBytes(
"GBK"
),
"ISO8859-1"
));
Workbook workbook = transformer.transformXLS(
new
FileInputStream(templateFile), context);
OutputStream ouputStream = response.getOutputStream();
workbook.write(ouputStream);
ouputStream.flush();
ouputStream.close();
}
catch
(ParsePropertyException e) {
e.printStackTrace();
}
catch
(InvalidFormatException e) {
e.printStackTrace();
}
catch
(IOException e) {
e.printStackTrace();
}
}
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采用键值对的形式
xls模板
导出效果
大家可能会遇到的问题
1、web下载中文名称不显示的问题
2、模板使用公式，下载下来不计算的问题
3、合并单元格的问题
下面逐一解答
1、中文字符转码
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response.setHeader(
"Content-disposition"
,
"attachment;filename="
+
new
String( fileName.getBytes(
"GBK"
),
"ISO8859-1"
));
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2、重新加载模板公式(通用方法)
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/**
*
* 重新设置单元格计算公式
*
* */
private
void
resetCellFormula(HSSFWorkbook wb)
{
HSSFFormulaEvaluator e =
new
HSSFFormulaEvaluator(wb);
int
sheetNum = wb.getNumberOfSheets();
for
(
int
i =
0
; i < sheetNum; i++)
{
HSSFSheet sheet = wb.getSheetAt(i);
int
rows = sheet.getLastRowNum() +
1
;
for
(
int
j =
0
; j < rows; j++)
{
HSSFRow row = sheet.getRow(j);
if
(row ==
null
)
continue
;
int
cols = row.getLastCellNum();
for
(
int
k =
0
; k < cols; k++)
{
HSSFCell cell = row.getCell(k);
// if (cell != null)
// System.out.println("cell["+j+","+k+"]=:"+cell.getCellType());
if
(cell ==
null
)
continue
;
if
(cell.getCellType() == HSSFCell.CELL_TYPE_FORMULA)
{
cell.setCellFormula(cell.getCellFormula());
// System.out.println("----公式："+cell.getCellFormula());
cell = e.evaluateInCell(cell);
// System.out.println("-----------"+cell.getNumericCellValue());
}
}
}
}
}
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使用方法
3、合并单元格
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HSSFWorkbook workbook = (HSSFWorkbook )transformer.transformXLS(
new
FileInputStream(templateFile), context);
HSSFSheet sheet = workbook.getSheetAt(
0
);
sheet.addMergedRegion(
new
CellRangeAddress(起始行号,截至行号,起始列号,截至列号));
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四个参数均从0开始