问题
I want to import the .xlsx file into PowerBuilder DataWindow, I know we can able to do it with CSV format, but the user wants to use the xlsx format, Please let me know if there are any options to import.
回答1:
you can import xls like this (this is our import function). Of course you have to know where to put each columns value from the excel to the datawindow. I think you do not need such a sophisticated solution, but there are the main guidelines:
int li_rtn, li_i
string ls_range
long ll_excel_rows, ll_max_rows, ll_max_columns
long ll_i, ll_j
string lsa_column_names[], ls_mod
long lla_column_pos[]
long ll_row
int li_rc
string las_truncated_data[]
string ls_errorMessage
oleobject lole_excel, lole_workbook, lole_worksheet
TRY
lole_excel = create oleobject
li_rtn = lole_excel.ConnectToNewObject("excel.application")
if li_rtn <> 0 then
ls_errorMessage = "Error running MS Excel api"
li_rtn = -1
else
li_rtn = 1
lole_excel.WorkBooks.Open(as_filepath)
lole_workbook = lole_excel.application.workbooks(1)
int li_sheetnum
IF IsNumber(as_sheet) THEN
li_sheetnum = Integer(as_sheet)
ELSE
li_sheetnum = uof_pub_excel_get_sheet_byname(as_sheet, lole_workbook)
END IF
lole_worksheet = lole_workbook.worksheets(li_sheetnum)
ll_max_rows = lole_worksheet.UsedRange.Rows.Count
ll_max_columns = lole_worksheet.UsedRange.Columns.Count
string lsa_tmp[]
lsa_column_names = f_split(f_trim(as_imported_columns,";"), ";")
FOR ll_i = 1 TO UpperBound(lsa_column_names)
IF (pos(lsa_column_names[ll_i], ":")>0) THEN
lsa_tmp = f_split(lsa_column_names[ll_i], ":")
lla_column_pos[UpperBound(lla_column_pos)+1] = long(lsa_tmp[2])
lsa_column_names[ll_i] = lsa_tmp[1]
END IF
NEXT
string ls_cellValue, ls_coltype, ls_value
int li_idx_col, li_statrRow
boolean lb_copyData = false
int li_col_offset, li_vlen
li_statrRow = ai_start_row
IF (UpperBound(lla_column_pos)=0) THEN
IF (UpperBound(lsa_column_names)<ll_max_columns) THEN ll_max_columns = UpperBound(lsa_column_names)
FOR ll_j = li_statrRow TO ll_max_rows
li_col_offset = 0
ll_row = adw_dest.insertRow(0) // insert new row
FOR ll_i = 1 TO (ll_max_columns)
ls_cellValue = String(lole_worksheet.cells(ll_j,ll_i).value)
IF (lsa_column_names[(ll_i)] = "") THEN
li_col_offset++
continue
END IF
// li_rc = adw_dest.SetItem(ll_row, lsa_column_names[(ll_i)], lole_worksheet.cells(ll_j, (ll_i)).value)
ls_value = String(lole_worksheet.cells(ll_j, ll_i).value)
ls_coltype = adw_dest.describe(lsa_column_names[(ll_i)]+'.ColType')
// Checking length of string data
IF (pos(ls_coltype, "char")>0) THEN
li_vlen = integer(replace(left(ls_coltype, len(ls_coltype)-1), 1, 5, ""))
IF (li_vlen > 0 AND len(ls_value)>li_vlen) THEN
li_rtn = -2
ls_value = left(ls_value, li_vlen)
IF (f_array_indexof(las_truncated_data, lsa_column_names[ll_i])<1) THEN
las_truncated_data[UpperBound(las_truncated_data)+1] = lsa_column_names[ll_i]
END IF
END IF
END IF
li_rc = guo_common_utilities.uof_pub_set_dw_value(adw_dest, ll_row, lsa_column_names[(ll_i)], ls_value, ls_coltype)
NEXT
NEXT
ELSE
FOR ll_j = li_statrRow TO ll_max_rows
ll_row = adw_dest.insertRow(0) // insert new row
FOR ll_i = 1 TO UpperBound(lla_column_pos)
ls_cellValue = String(lole_worksheet.cells(ll_j,lla_column_pos[ll_i]).value)
adw_dest.SetItem(ll_row, lsa_column_names[ll_i], ls_cellValue)
NEXT
NEXT
END IF
end if
CATCH ( runtimeerror lo_rte)
li_rtn = -1
ls_errorMessage = "MS Excel api runtime error"
FINALLY
// Quit
IF (IsValid(lole_excel)) THEN
lole_excel.application.quit()
lole_excel.DisconnectObject()
END IF
destroy lole_Excel
destroy lole_workbook
destroy lole_worksheet
END TRY
uo_nv_response luo_return
luo_return = create uo_nv_response
luo_return.ii_errorCode = li_rtn
IF (UpperBound(las_truncated_data)>0) THEN
luo_return.is_errorMessage = "Zeichenkette von "
FOR li_i = 1 TO UpperBound(las_truncated_data)
luo_return.is_errorMessage += las_truncated_data[li_i] + ", "
NEXT
luo_return.is_errorMessage = Left(luo_return.is_errorMessage, Len(luo_return.is_errorMessage)-2)
luo_return.is_errorMessage += " wurde abgeschnitten"
ELSE
luo_return.is_errorMessage = ls_errorMessage
END IF
return luo_return
Here are some missing functions:
global type f_array_indexof from function_object
end type
forward prototypes
global function integer f_array_indexof (any aa_array[], any aa_element)
end prototypes
global function integer f_array_indexof (any aa_array[], any aa_element);int li_count
FOR li_count = 1 TO UpperBound(aa_array)
IF (lower(aa_array[li_count]) = lower(aa_element)) THEN
return li_count
END IF
NEXT
return -1
end function
f_split:
global type f_split from function_object end type
forward prototypes global function boolean f_split (string as_str) global function any f_split (string as_str, string as_delimiter) end prototypes
global function any f_split (string as_str, string as_delimiter);long ll_pos1, ll_pos2, i String lsa_split[]
ll_pos1 = Pos(as_str, as_delimiter) ll_pos2 = 0 i = 1
if (ll_pos1 = 0 and Len(as_str)>0) then lsa_split[1] = as_str
do while ll_pos1 > 0
lsa_split[i] = ''
if( i = 1 )then
lsa_split[i] = mid (as_str, 1, ll_pos1 - 1)
ll_pos2 = ll_pos1
else
ll_pos2 = Pos (as_str, as_delimiter, ll_pos1 + 1)
if( ll_pos2 = 0 )then // it's the end :)
lsa_split[i] = mid (as_str, ll_pos1 + 1, Len(as_str) - ll_pos1 )
else
lsa_split[i] = mid (as_str, ll_pos1 + 1, ll_pos2 - ll_pos1 - 1)
end if
end if
ll_pos1 = ll_pos2
i = i + 1
loop
//lsa_split[i] = Right( as_str, Len(as_str) - ll_pos1 )
return lsa_split end function
f_trim:
global type f_trim from function_object end type
forward prototypes global function string f_trim (string as_string, character ac_remove) end prototypes
global function string f_trim (string as_string, character ac_remove);if (Isnull(as_string) or Isnull(ac_remove)) then return as_string
do while (left(as_string, 1) = ac_remove) as_string = right(as_string, Len(as_string)-1) loop
do while (right(as_string, 1) = ac_remove) as_string = left(as_string, Len(as_string)-1) loop
return as_string end function
public function integer uof_pub_excel_get_sheet_byname (string as_sheetname, oleobject aole_workbook);int li_sheets_count, li_i
li_sheets_count = aole_workbook.worksheets.count FOR li_i = 1 TO li_sheets_count IF (aole_workbook.worksheets(li_i).name = as_sheetname) THEN return li_i NEXT
return 0 end function
回答2:
If the spreadsheet is defined correctly (header row contains the column name, rows 2-n contain the data), then you can define an ODBC connection to it, and treat it just like a database.
You paint the datawindow directly against the spreadsheet - no coding at all!! (Other than setting SQLCA and calling dw.Retrieve(), of course)
回答3:
I would open the workbook with OLE, save it as format 8 (DBase3) with a dbf extension, then import it in the DataWindow.
回答4:
Save it to a text file using OLE and then import it. Below piece of code does this
li_return = GetFileOpenName('Select a spreadsheet to upload - XLS or XLSX formats only', ls_path, ls_file, 'xl*', "All Excel Files (*.xl*),*.xl*", "%userprofile%\desktop")
//Save the file as Text using OLE and then import
MyExcelFile = Create OLEObject
If MyExcelFile.ConnectToObject(ls_path) < 0 then
MessageBox('Import Error', 'Unable to load spreadsheet. Please check if the file is open')
Return
End If
ls_txt_path = Mid(ls_path, 1, Pos(ls_path, '.xl') - 1) + '.txt'
FileDelete(ls_txt_path)
MyExcelFile.Application.WorkBooks(1).SaveAs(ls_txt_path, 21);
MyExcelFile.Application.DisplayAlerts = False
MyExcelFile.Application.WorkBooks(1).Close();
Destroy MyExcelFile;
Now import the file with the name ls_txt_path into the datawindow
来源：https://stackoverflow.com/questions/17803298/how-to-import-excel-file-into-datawindow