Cannot set font with CellUtil.setCellStyleProperties from ApachePOI-CodePudding

Sample code:

    val workbook = XSSFWorkbook()
    val sheet = workbook.createSheet()

    val properties: MutableMap<String, Any> = mutableMapOf()
    val font = workbook.createFont()
    font.bold = true
    properties[CellUtil.BORDER_BOTTOM] = BorderStyle.DOUBLE
    properties[CellUtil.FILL_BACKGROUND_COLOR] = IndexedColors.GREY_50_PERCENT.index
    properties[CellUtil.FILL_FOREGROUND_COLOR] = IndexedColors.GREY_50_PERCENT.index
    properties[CellUtil.FILL_PATTERN] = FillPatternType.SOLID_FOREGROUND

    val row = sheet.createRow(0)
    val cell = row.createCell(0)
    CellUtil.setCellStyleProperties(cell, properties)
    CellUtil.setCellStyleProperty(cell, CellUtil.FONT, font)
    cell.setCellValue("This should be bold.")

    val fileOut = FileOutputStream("customers.xlsx")
    workbook.write(fileOut)
    fileOut.close()
    workbook.close()

Both the background color and the border are set correctly, the font however does not appear to be set in the document itself, as can be seen here: Resulting table

I am using apache poi-ooxml version 5.2.0, but I've tried other versions with no success. I'm also using Microsoft Excel for Microsoft 365 MSO (16.0.14326.20706) 64-bit.

NOTE: I haven't had this issue before, it appeared only recently, roughly 5th Jan.

Any idea what might be going on?

CodePudding user response：

To set the font with setCellStyleProperty you need to pass the font's index as a value, not a font itself:

CellUtil.setCellStyleProperty(cell, CellUtil.FONT, font.index)

Alternatively, you may use setFont method, accepting Font:

CellUtil.setFont(cell, font)