我从包含超过3000行的Excel工作表中获取数据。但我得到一个像java.lang.IllegalArgumentException这样的异常：提供的POIFSFileSystem既不包含'Workbook'条目，也不包含'WORKBOOK'条目。它真的是一个excel文件吗？
以下是我的代码 -
public ActionForward exportExtraExcel(ActionMapping mapping,
ActionForm form, HttpServletRequest request,
HttpServletResponse response) throws Exception {
System.out.println("inside exportExtraExcel----------> ");
// String fileName=request.getParameter("filePath");
// System.out.println("fileName----qqqqqqqqqqqqqq---->"+fileName);
String fileName = "C:\\Users\\apanigrahi\\Desktop\\tt.xls";
Statement st = null;
ResultSet rs = null;
EmployeeDTO employeeDTO = new EmployeeDTO();
List cellDataList = new ArrayList();
try {
FileInputStream fileInputStream = new FileInputStream(fileName);
POIFSFileSystem fsFileSystem = new POIFSFileSystem(fileInputStream);
HSSFWorkbook workBook = new HSSFWorkbook(fsFileSystem);
HSSFSheet hssfSheet = workBook.getSheetAt(0);
int rows = hssfSheet.getLastRowNum() + 1;
int col = -1;
for (int i = 0; i < rows; i++) {
HSSFRow hssfRow = hssfSheet.getRow(i);
if (i == 0)
col = hssfRow.getLastCellNum();
List cellTempList = new ArrayList();
for (int j = 0; j < col; j++) {
HSSFCell hssfCell = hssfRow.getCell((short) j);
cellTempList.add(hssfCell);
}
cellDataList.add(cellTempList);
}
} catch (Exception e)
{
e.printStackTrace();
}
List<Integer> empIdArr = new ArrayList<Integer>();
List<Integer> userIdArr = new ArrayList<Integer>();
List<String> empFnameArr = new ArrayList<String>();
List<String> empLnameArr = new ArrayList<String>();
List<String> employeeIdArr = new ArrayList<String>();
List<String> date1 = new ArrayList<String>();
ArrayList<ArrayList> biometric_Data = getBiometricData(cellDataList);
ArrayList<String> date_biometric_Data = biometric_Data.get(0);
ArrayList<String> emp_code_biometric_Data = biometric_Data.get(1);
ArrayList<String> working_hours_biometric_Data = biometric_Data.get(2);
ArrayList<String> date_biometric_Data1 = new ArrayList<String>();
ArrayList<String> emp_code_biometric_Data1 =new ArrayList<String>();
ArrayList<String> working_hours_biometric_Data1 = new ArrayList<String>();
List<EmployeeDTO> extra_empLeaveSummaryReport = new ArrayList<EmployeeDTO>();
try {
connMgr = InitServlet.connMgr;
conn = connMgr.getConnection("access");
st = conn.createStatement();
for (int j = 0; j < emp_code_biometric_Data.size(); j++)
{
String qry = "select emp_id,user_id,emp_first_name,emp_last_name,employee_id from \"Employee\" where employee_id='"
+ emp_code_biometric_Data.get(j)
+ "' and is_deleted is null and emp_current_country ='1' order by employee_id";
rs = st.executeQuery(qry);
if(rs!=null){
while (rs.next()) {
int empId = rs.getInt(1);
empIdArr.add(empId);
userIdArr.add(rs.getInt(2));
empFnameArr.add(rs.getString(3));
empLnameArr.add(rs.getString(4));
employeeIdArr.add(rs.getString(5));
date_biometric_Data1.add(date_biometric_Data.get(j));
emp_code_biometric_Data1.add(emp_code_biometric_Data.get(j));
working_hours_biometric_Data1.add(working_hours_biometric_Data.get(j));
}
}
connMgr.freeConnection("access", conn);
}
} catch (Exception e) {
e.printStackTrace();
System.out.println("Exception in exportExcelLeaveSummary");
} finally {
rs.close();
st.close();
connMgr.freeConnection("access", conn);
}
for (int i = 0; i < employeeIdArr.size(); i++)
{
double hours_worked = Double.parseDouble(working_hours_biometric_Data.get(i));
if (hours_worked < 9.00 && hours_worked > 0.0)
{
String day_status = "Halfday";
try {
System.out.println("Inside if loop Halfday");
UserManager userManager = new UserManagerImpl();
employeeDTO = userManager.getEmployeeLeaveDetails(userIdArr.get(i));
employeeDTO.setDate(date_biometric_Data1.get(i));
employeeDTO.setEmployeeId(employeeIdArr.get(i));
employeeDTO.setFirstName(empFnameArr.get(i));
employeeDTO.setLastName(empLnameArr.get(i));
employeeDTO.setWorking_hours(working_hours_biometric_Data1.get(i));
int totalLeaves = employeeDTO.getTotalLeaves();
employeeDTO.setTotalLeaves(totalLeaves);
int plToCredit = employeeDTO.getPlToCredit();
employeeDTO.setPlToCredit(plToCredit);
int slclToCredit = employeeDTO.getSlclToCredit();
employeeDTO.setSlclToCredit(slclToCredit);
int slclTotalBal = totalLeaves - plToCredit;
employeeDTO.setSlclTotalBal(slclTotalBal);
connMgr = InitServlet.connMgr;
conn = connMgr.getConnection("access");
st = conn.createStatement();
String qry = "";
qry = "Select * from \"Est_Employee_Leave_Application\" Where leave_approval_status='Approved' and '"+ ConvertDate.stringtoSQLDate(date_biometric_Data
.get(i))
+ "' between leave_application_from_date and leave_application_to_date And emp_id ='"
+ empIdArr.get(i) + "'";
rs = st.executeQuery(qry);
if (!(rs.equals(null))) {
employeeDTO.setDay_status(day_status);
extra_empLeaveSummaryReport.add(employeeDTO);
request.setAttribute("leaveSummary",extra_empLeaveSummaryReport);
}
} catch (Exception e) {
e.printStackTrace();
System.out
.println("Exception in leaveDetailsReport method");
} finally {
rs.close();
st.close();
connMgr.freeConnection("access", conn);
}
}
if (hours_worked == 0.0) {
String day_status = "LOP";
try {
System.out.println("Inside if loop LOP");
UserManager userManager = new UserManagerImpl();
employeeDTO = userManager.getEmployeeLeaveDetails(userIdArr.get(i));
employeeDTO.setDate(date_biometric_Data1.get(i));
employeeDTO.setEmployeeId(employeeIdArr.get(i));
employeeDTO.setFirstName(empFnameArr.get(i));
employeeDTO.setLastName(empLnameArr.get(i));
employeeDTO.setWorking_hours(working_hours_biometric_Data1.get(i));
int totalLeaves = employeeDTO.getTotalLeaves();
employeeDTO.setTotalLeaves(totalLeaves);
int plToCredit = employeeDTO.getPlToCredit();
employeeDTO.setPlToCredit(plToCredit);
int slclToCredit = employeeDTO.getSlclToCredit();
employeeDTO.setSlclToCredit(slclToCredit);
int slclTotalBal = totalLeaves - plToCredit;
employeeDTO.setSlclTotalBal(slclTotalBal);
connMgr = InitServlet.connMgr;
conn = connMgr.getConnection("access");
st = conn.createStatement();
String qry = "";
qry = "Select * from \"Est_Employee_Leave_Application\" Where '"
+ ConvertDate.stringtoSQLDate(date_biometric_Data
.get(i))
+ "' between leave_application_from_date and leave_application_to_date And emp_id ='"
+ empIdArr.get(i) + "'";
rs = st.executeQuery(qry);
if (!(rs.equals(null))) {
employeeDTO.setDay_status(day_status);
extra_empLeaveSummaryReport.add(employeeDTO);
request.setAttribute("leaveSummary",
extra_empLeaveSummaryReport);
}
} catch (Exception e) {
e.printStackTrace();
System.out
.println("Exception in leaveDetailsReport method");
} finally {
rs.close();
st.close();
connMgr.freeConnection("access", conn);
}
}
}
List<String> columnName = new ArrayList<String>();
columnName.add("Date");
columnName.add("Emp_Id");
columnName.add("Emp_First_Name");
columnName.add("Emp_Last_Name");
columnName.add("SL/CL_TotalBal");
columnName.add("PL_ToCredit");
columnName.add("Total_Leaves");
columnName.add("SL/CL_ToCredit");
columnName.add("Working_Hours");
columnName.add("Day_status");
request.setAttribute("columnNames", columnName);
return mapping.findForward("EXTRA_DETAILED_REPORT");
}
@SuppressWarnings("rawtypes")
public ArrayList<ArrayList> getBiometricData(List cellDataList)
{
EmployeeDTO employeeDTO = new EmployeeDTO();
ArrayList<String> date_Biometric = new ArrayList<String>();
ArrayList<String> emp_code_Biometric = new ArrayList<String>();
ArrayList<String> working_hours_Biometric = new ArrayList<String>();
ArrayList<ArrayList> biometric_All = new ArrayList<ArrayList>();
for (int i = 2; i < cellDataList.size(); i++)
{
List cellTempList = (List) cellDataList.get(i);
for (int j = 0; j < cellTempList.size(); j++)
{
if (j == 0)
{
HSSFCell hssfCell = (HSSFCell) cellTempList.get(0);
Date d1 = hssfCell.getDateCellValue();
SimpleDateFormat sdfAct = new SimpleDateFormat("dd-MMM-YYYY");
String d2 = new SimpleDateFormat("EEEE").format(d1);
String week_day1 = "Sunday";
String week_day2 = "Saturday";
if (week_day1.equals(d2) || week_day2.equals(d2)) {
j = 15;
}
else {
employeeDTO.setDate(sdfAct.format(d1).toString());
}
}
if (j == 1) {
HSSFCell hssfCell = (HSSFCell) cellTempList.get(1);
// blank = hssfCell.toString();
// if(blank == "")
// System.out.println("N/A");
// //else
// //System.out.println(blank);
}
if (j == 2) {
HSSFCell hssfCell = (HSSFCell) cellTempList.get(2);
String emp_code1 = hssfCell.toString();
String temp = emp_code1;
String non_emp1="10003";
String non_emp2="1001";
String non_emp3="1002";
String non_emp4="1111";
String non_emp5="237";
String non_emp6="002";
String non_emp7="023";
String non_emp8="511";
if(temp.length()>3){
temp = ""+ Integer.parseInt(temp);
}
if(temp.equals(non_emp1)||temp.equals(non_emp2)||temp.equals(non_emp3)||temp.equals(non_emp4)||temp.equals(non_emp5)||temp.equals(non_emp6)||temp.equals(non_emp7)||temp.equals(non_emp8))
{
j=15;
}
else{
String emp_code = "EST" +temp;
employeeDTO.setEmp_code(emp_code);
System.out.println(emp_code);
}
}
if (j == 3) {
HSSFCell hssfCell = (HSSFCell) cellTempList.get(3);
String emp_name = hssfCell.toString();
employeeDTO.setName(emp_name);
}
if (j == 4) {
HSSFCell hssfCell = (HSSFCell) cellTempList.get(4);
// System.out.println(card_num);
}
if (j == 5) {
HSSFCell hssfCell = (HSSFCell) cellTempList.get(5);
String shift_start = hssfCell.toString();
}
if (j == 6) {
String emp_in = "";
HSSFCell hssfCell = (HSSFCell) cellTempList.get(6);
try {
emp_in = hssfCell.toString();
} catch (Exception e) {
emp_in = "";
}
if (emp_in == "" || emp_in.isEmpty() || emp_in == null) {
} else {
}
}
if (j == 7) {
String emp_out = "";
HSSFCell hssfCell = (HSSFCell) cellTempList.get(7);
try {
emp_out = hssfCell.toString();
} catch (Exception e) {
}
if (emp_out == "" || emp_out.isEmpty() || emp_out == null) {
} else {
}
}
if (j == 8) {
String shift_end = "";
HSSFCell hssfCell = (HSSFCell) cellTempList.get(8);
}
if (j == 9) {
String status = "";
HSSFCell hssfCell = (HSSFCell) cellTempList.get(9);
status = hssfCell.toString();
String holiday_status="Hol";
if(status.equals(holiday_status))
{
j=15;
}
}
if (j == 10) {
String emp_late = "";
HSSFCell hssfCell = (HSSFCell) cellTempList.get(10);
try {
emp_late = hssfCell.toString();
} catch (Exception e) {
emp_late = "";
}
if (emp_late == "" || emp_late.isEmpty()
|| emp_late == null) {
} else {
}
}
if (j == 11) {
String emp_early = "";
HSSFCell hssfCell = (HSSFCell) cellTempList.get(11);
try {
emp_early = hssfCell.toString();
} catch (Exception e) {
emp_early = "";
}
if (emp_early == "" || emp_early.isEmpty()
|| emp_early == null) {
} else {
}
}
if (j == 12) {
String hours_worked = "";
HSSFCell hssfCell = (HSSFCell) cellTempList.get(12);
try {
hours_worked = hssfCell.toString();
employeeDTO.setHours_worked(hours_worked);
} catch (Exception e) {
hours_worked = "";
}
if (hours_worked == "" || hours_worked.isEmpty()|| hours_worked == null)
{
hours_worked = "0.00";
employeeDTO.setHours_worked(hours_worked);
}
date_Biometric.add(employeeDTO.getDate());
emp_code_Biometric.add(employeeDTO.getEmp_code());
working_hours_Biometric.add(employeeDTO.getHours_worked());
}
if (j == 13) {
HSSFCell hssfCell = (HSSFCell) cellTempList.get(13);
}
if (j == 14) {
HSSFCell hssfCell = (HSSFCell) cellTempList.get(14);
}
}
}
biometric_All.add(date_Biometric);
biometric_All.add(emp_code_Biometric);
biometric_All.add(working_hours_Biometric);
return biometric_All;
}
.................. 在上面的代码中，我正在考虑上面提到的异常 HSSFWorkbook workBook = new HSSFWorkbook（fsFileSystem）;