如何使用java和Apache POI库覆盖excel文件中的单元格样式？

Question

我正在使用java和Apache POI库对input.xlsx文件进行excel验证。

public static CellStyle getNewCellStyle(){
    CellStyle style = myWorkBook.createCellStyle();
    style.setFillBackgroundColor(IndexedColors.GREEN.getIndex());
    style.setFillPattern(CellStyle.ALIGN_FILL); 
    return style;
}


public static void chCaseNumberColumnValidation(Cell cell){
    String cellData = getCellDataValue(cell);
    if(cellData.length() == 10){
        if(cellData.equals("BLANK") || cellData.trim().length() == 0){
            System.out.println("BLANK CELL:   " + cell.getRowIndex() + "," + cell.getColumnIndex());
        }

        if(cellData.charAt(0) != '5'){
            System.out.println("DON't START WITH 5:    " + cell.getRowIndex() + "," + cell.getColumnIndex());
            cell.setCellStyle(getNewCellStyle());
        }
    }
    else{
        System.out.println("****INVALID SIZE   " + cell.getRowIndex() + "," + cell.getColumnIndex());

    }

}

Answer 1

粘贴Apache POI Developer Guide中设置颜色的示例

填充和颜色

Workbook wb = new XSSFWorkbook();
Sheet sheet = wb.createSheet("new sheet");

// Create a row and put some cells in it. Rows are 0 based.
Row row = sheet.createRow((short) 1);

// Aqua background
CellStyle style = wb.createCellStyle();
style.setFillBackgroundColor(IndexedColors.AQUA.getIndex());
style.setFillPattern(CellStyle.BIG_SPOTS);
Cell cell = row.createCell((short) 1);
cell.setCellValue("X");
cell.setCellStyle(style);

// Orange "foreground", foreground being the fill foreground not the font color.
style = wb.createCellStyle();
style.setFillForegroundColor(IndexedColors.ORANGE.getIndex());
style.setFillPattern(CellStyle.SOLID_FOREGROUND);
cell = row.createCell((short) 2);
cell.setCellValue("X");
cell.setCellStyle(style);

// Write the output to a file
FileOutputStream fileOut = new FileOutputStream("workbook.xls");
wb.write(fileOut);
fileOut.close();