I create cell styles for HSSFWorkbook:
private static HSSFCellStyle createNewColorCellStyle(Map<Color, HSSFCellStyle> cellStylesMap, HSSFWorkbook workbook, Color color) {
if (cellStylesMap.get(color) == null) {
HSSFCellStyle cellStyle = workbook.createCellStyle();
HSSFColor hssfColor = setColor(workbook, (byte) color.getRed(), (byte) color.getGreen(), (byte) color.getBlue());
cellStyle.setFillForegroundColor(hssfColor.getIndex());
cellStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
cellStyle.setBorderTop(CellStyle.BORDER_THIN);
cellStyle.setBorderLeft(CellStyle.BORDER_THIN);
cellStyle.setBorderBottom(CellStyle.BORDER_THIN);
cellStyle.setBorderRight(CellStyle.BORDER_THIN);
cellStylesMap.put(color, cellStyle);
}
return cellStylesMap.get(color);
}
There is the function where I set color to cell style
private static HSSFColor setColor(HSSFWorkbook workbook, byte r, byte g, byte b) {
HSSFPalette palette = workbook.getCustomPalette();
HSSFColor hssfColor = null;
try {
hssfColor = palette.findColor(r, g, b);
if (hssfColor == null) {
palette.setColorAtIndex(HSSFColor.BLUE_GREY.index, r, g, b);
HSSFColor hssfColor = palette.getColor(HSSFColor.BLUE_GREY.index);
}
} catch (Exception e) {
LOGGER.info(String.valueOf(e));
}
return hssfColor;
}
And I use it in that method, where I set my style to the HSSFCell. The function for usiing my map style. I create rows and cells in the loop:
void excell(Path path, JTable table) {
try {
HSSFWorkbook fWorkbook = new HSSFWorkbook();
HSSFSheet fSheet = fWorkbook.createSheet("the sheet");
Map<Color, HSSFCellStyle> cellStylesMap = new HashMap<>();
TableModel model = table.getModel();
for (int i = 0; i < model.getRowCount(); i++) {
HSSFRow fRow = fSheet.createRow((short) i);
for (int j = 0; j < table.getColumnModel().getColumnCount(); j++) {
HSSFCell cell = fRow.createCell(j);
cell.setCellValue(model.getValueAt(i, j));
Component c = table.getCellRenderer(i, j).getTableCellRendererComponent(table, cell, table.isCellSelected(i, j), table.hasFocus(), i, j);
Color color = c.getBackground() != null ? c.getBackground() : table.getBackground();
cell.setCellStyle(createNewColorCellStyle(cellStylesMap, fWorkbook, color));
}
}
}
FileOutputStream fileOutputStream;
fileOutputStream = new FileOutputStream(path.toString());
BufferedOutputStream bos = new BufferedOutputStream(fileOutputStream);
fWorkbook.write(bos);
bos.close();
fileOutputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
And all my cells are one color. In the different machine is different colors. What error is there? Why all my colors for excel are the same? I don't understand what I do wrong. Thanks.
You basically copy the background color of the components of your table to the Excel; you will need to debug/find out which color that is.
I assume that they are all of the same color - that's why you get the sme colors in Excel.
If - for example - you change
to
you get a mix of red and blue rows - so your code does work. Basically you need to check which color goes into createNewColorCellStyle, and then change that one way or another.
Also, in setColor you define hssfColor twice; in the line
you need to delete the declaration HSSFColor.