Workbook workbook = new XSSFWorkbook();
Sheet sheet = workbook.createSheet();
Row row = sheet.createRow((short) 1);
CellStyle style = workbook.createCellStyle();
style.setFillForegroundColor(***IndexedColors.AQUA.getIndex()***);
style.setFillPattern(CellStyle.SOLID_FOREGROUND);
Cell cell = row.createCell((short) 1);
cell.setCellValue("X1");
cell.setCellStyle(style);
图片对应位置:

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上面的单元格颜色对应下面的英语颜色表示,从X1-X49 按顺序对应;
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将下面对应的code填入上述代码加粗斜体位置即可。
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IndexedColors.AQUA.getIndex()
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IndexedColors.AUTOMATIC.getIndex()
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IndexedColors.BLUE.getIndex()
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IndexedColors.BLUE_GREY.getIndex()
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IndexedColors.BRIGHT_GREEN.getIndex()
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IndexedColors.BROWN.getIndex()
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IndexedColors.CORAL.getIndex()
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IndexedColors.CORNFLOWER_BLUE.getIndex()
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IndexedColors.DARK_BLUE.getIndex()
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IndexedColors.DARK_GREEN.getIndex()
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IndexedColors.DARK_RED.getIndex()
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IndexedColors.DARK_TEAL.getIndex()
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IndexedColors.DARK_YELLOW.getIndex()
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IndexedColors.GOLD.getIndex()
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IndexedColors.GREEN.getIndex()
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IndexedColors.GREY_25_PERCENT.getIndex()
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IndexedColors.GREY_40_PERCENT.getIndex()
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IndexedColors.GREY_50_PERCENT.getIndex()
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IndexedColors.GREY_80_PERCENT.getIndex()
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IndexedColors.INDIGO.getIndex()
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IndexedColors.LAVENDER.getIndex()
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IndexedColors.LEMON_CHIFFON.getIndex()
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IndexedColors.LIGHT_BLUE.getIndex()
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IndexedColors.LEMON_CHIFFON.getIndex()
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IndexedColors.LIGHT_BLUE.getIndex()
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IndexedColors.LIGHT_CORNFLOWER_BLUE.getIndex()
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IndexedColors.LIGHT_GREEN.getIndex()
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IndexedColors.LIGHT_ORANGE.getIndex()
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IndexedColors.LIGHT_TURQUOISE.getIndex()
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IndexedColors.LIGHT_YELLOW.getIndex()
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IndexedColors.LIME.getIndex()
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IndexedColors.MAROON.getIndex()
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IndexedColors.OLIVE_GREEN.getIndex()
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IndexedColors.ORANGE.getIndex()
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IndexedColors.ORCHID.getIndex()
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IndexedColors.PALE_BLUE.getIndex()
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IndexedColors.PINK.getIndex()
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IndexedColors.PLUM.getIndex()
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IndexedColors.RED.getIndex()
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IndexedColors.ROSE.getIndex()
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IndexedColors.ROYAL_BLUE.getIndex()
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IndexedColors.SEA_GREEN.getIndex()
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IndexedColors.SKY_BLUE.getIndex()
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IndexedColors.TAN.getIndex()
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IndexedColors.TEAL.getIndex()
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IndexedColors.TURQUOISE.getIndex()
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IndexedColors.VIOLET.getIndex()
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IndexedColors.WHITE.getIndex()
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IndexedColors.YELLOW.getIndex()