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POI中背景颜色设置方法如下:

HSSFCellStyle style = workbook.createCellStyle();
style.setFillBackgroundColor(HSSFColor.AQUA.index);
cell.setCellStyle(style);



颜色类型是在HSSFColor里面定义的.
执行结果
HSSFColor.ROYAL_BLUE
HSSFColor.TEAL
HSSFColor.LIME
HSSFColor.PALE_BLUE
HSSFColor.AQUA
HSSFColor.GREEN
HSSFColor.TURQUOISE
HSSFColor.DARK_BLUE
HSSFColor.CORNFLOWER_BLUE
HSSFColor.OLIVE_GREEN
HSSFColor.WHITE
HSSFColor.LIGHT_TURQUOISE
HSSFColor.LEMON_CHIFFON
HSSFColor.LIGHT_GREEN
HSSFColor.BLUE
HSSFColor.DARK_RED
HSSFColor.CORAL
HSSFColor.RED
HSSFColor.LIGHT_YELLOW
HSSFColor.SKY_BLUE
HSSFColor.BROWN
HSSFColor.SEA_GREEN
HSSFColor.INDIGO
HSSFColor.MAROON
HSSFColor.GREY_80_PERCENT
HSSFColor.GREY_25_PERCENT
HSSFColor.DARK_GREEN
HSSFColor.YELLOW
HSSFColor.GOLD
HSSFColor.GREY_40_PERCENT
HSSFColor.DARK_TEAL
HSSFColor.PINK
HSSFColor.ORCHID
HSSFColor.LIGHT_BLUE
HSSFColor.LIGHT_CORNFLOWER_BLUE
HSSFColor.BLACK
HSSFColor.DARK_YELLOW
HSSFColor.VIOLET
HSSFColor.LAVENDER
HSSFColor.ROSE
HSSFColor.BLUE_GREY
HSSFColor.LIGHT_ORANGE
HSSFColor.ORANGE
HSSFColor.GREY_50_PERCENT


POI3的设置方法:
style = createBorderedStyle(wb);
style.setAlignment(HorizontalAlignment.RIGHT);
style.setFont(font1);
style.setFillForegroundColor(IndexedColors.GREY_25_PERCENT.getIndex());
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
style.setDataFormat(df.getFormat("d-mmm"));
styles.put("cell_g", style);