Apache POI 第六讲之利用Excel模板实现数据的批量导出

利用Excel模板实现数据的批量导出

public static Workbook fillExcelDataWithTemplate(ResultSet rs ,String templateFile) throws Exception {
InputStream inp = ExcelUtil.class.getResourceAsStream("/com/wenteryan/template/"+templateFile) ;
POIFSFileSystem fs = new POIFSFileSystem(inp) ;
Workbook wb = new HSSFWorkbook(fs) ;
Sheet sheet = wb.getSheetAt(0) ;
int cellNums = sheet.getRow(0).getLastCellNum() ;
int rowIndex = 1 ;
while(rs.next()) {
Row row = sheet.createRow(rowIndex++) ;
for(int i=0; i<cellNums; i++) {
row.createCell(i).setCellValue(rs.getObject(i+1).toString()) ;
}
}
return wb ;
}

public String export2() throws Exception{
Connection con=null;
try {
con=dbUtil.getCon();
Workbook wb= ExcelUtil.fillExcelDataWithTemplate(userDao.userList(con, null), "userExporTemplate.xls") ;
ResponseUtil.export(ServletActionContext.getResponse(), wb, "利用模板导出excel.xls");
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
try {
dbUtil.closeCon(con);
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
return null;
}

function exportUser2(){
window.open('user!export2') ;
}