java excel导出单元格增加色阶条并根据值的范围渲染不同颜色
时间: 2023-12-10 07:39:35 浏览: 248
实现Java Excel导出单元格增加色阶条并根据值的范围渲染不同颜色的步骤如下:
1. 导入poi-ooxml依赖
在pom.xml文件中添加以下依赖:
```xml
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>4.1.2</version>
</dependency>
```
2. 设置单元格样式
```java
Workbook wb = new XSSFWorkbook();
Sheet sheet = wb.createSheet("Sheet1");
// 创建一个新的单元格样式
CellStyle style = wb.createCellStyle();
// 设置填充颜色
style.setFillForegroundColor(IndexedColors.WHITE.getIndex());
style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
// 设置字体颜色
Font font = wb.createFont();
font.setColor(IndexedColors.BLACK.getIndex());
style.setFont(font);
// 设置边框
style.setBorderBottom(BorderStyle.THIN);
style.setBottomBorderColor(IndexedColors.BLACK.getIndex());
style.setBorderLeft(BorderStyle.THIN);
style.setLeftBorderColor(IndexedColors.BLACK.getIndex());
style.setBorderRight(BorderStyle.THIN);
style.setRightBorderColor(IndexedColors.BLACK.getIndex());
style.setBorderTop(BorderStyle.THIN);
style.setTopBorderColor(IndexedColors.BLACK.getIndex());
// 设置数据格式
DataFormat format = wb.createDataFormat();
style.setDataFormat(format.getFormat("#,##0.00"));
// 设置颜色规则
ConditionalFormattingRule rule = sheet.getSheetConditionalFormatting().createConditionalFormattingRule(ComparisonOperator.BETWEEN, "0", "100");
ColorScaleFormatting colorScale = rule.createColorScaleFormatting();
colorScale.getThresholds()[0].setRangeType(RangeType.MIN);
colorScale.getThresholds()[0].setFormatColor(Color.YELLOW);
colorScale.getThresholds()[1].setRangeType(RangeType.PERCENTILE);
colorScale.getThresholds()[1].setValue(50d);
colorScale.getThresholds()[1].setFormatColor(Color.ORANGE);
colorScale.getThresholds()[2].setRangeType(RangeType.MAX);
colorScale.getThresholds()[2].setFormatColor(Color.RED);
// 应用样式到单元格
Cell cell = sheet.createRow(0).createCell(0);
cell.setCellValue(50);
CellRangeAddress[] regions = { CellRangeAddress.valueOf("A1") };
sheet.getSheetConditionalFormatting().addConditionalFormatting(regions, rule);
cell.setCellStyle(style);
```
以上代码创建了一个新的单元格样式,并设置了填充颜色、字体颜色、边框、数据格式和颜色规则。其中,颜色规则使用了三个阈值,分别为最小值、中间值和最大值,并设置了对应的颜色。
3. 导出Excel文件
```java
FileOutputStream out = new FileOutputStream("example.xlsx");
wb.write(out);
out.close();
```
以上代码将Excel文件导出到磁盘中。
完成以上步骤后,生成的Excel文件中单元格会根据其值自动渲染不同的颜色,并在单元格的右侧添加了一个色阶条。
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