使用Apache POI有条件地为行着色

Question

I work by Apache poi API, I want to color the lines conditionally , the rule is alternating color after 5 lines: the line 1-5 red, line 6-10 blue, line 11-15 red. so on.

this rule :

 ConditionalFormattingRule rule1 = sheetCF.createConditionalFormattingRule("MOD(ROW(),2)");

alternate row in a different color.

how I can write my rule ??

Answer 1

You'll need two rules, one for red and one for blue. Subtract 1 from ROW() so that row 11 becomes 10 and row 15 becomes 14, so that the result of the mod is less than 5. Also, row 10 becomes 9 and the mod is greater than or equal to 5, so it will become blue. The pattern repeats after 10 rows, so that's why the mod operand is 10 .

ConditionalFormattingRule red = sheetCF.createConditionalFormattingRule(
    "MOD(ROW() - 1, 10) < 5");
FontFormatting ffRed = red.createFontFormatting();
ffRed.setFontColorIndex(IndexedColors.RED.index);

ConditionalFormattingRule blue = sheetCF.createConditionalFormattingRule(
    "MOD(ROW() - 1, 10) >= 5");
FontFormatting ffBlue = blue.createFontFormatting();
ffBlue.setFontColorIndex(IndexedColors.BLUE.index);

Then you can add the conditional formatting to your sheet with your SheetConditionalFormatting object, with an appropriate CellRangeAddress .

For more detail, see the Quick Guide on Conditional Formatting .

Answer 2

我认为以下方法（或类似方法，可能使用(ROW()+1)或(ROW()-1)而不是ROW() ）应该有效：

ConditionalFormattingRule rule1 = sheetCF.createConditionalFormattingRule("MOD(ROW() / 5,2)");