Java实战之利用POI生成Excel图表

<dependency>  
    <groupId>org.apache.poi</groupId>  
    <artifactId>poi-ooxml</artifactId>  
    <version>5.2.3</version>  
</dependency>  

XSSFWorkbook workbook = new XSSFWorkbook();  
XSSFSheet sheet = workbook.createSheet("数据表");  

// 创建标题行  
Row headerRow = sheet.createRow(0);  
headerRow.createCell(0).setCellValue("国家");  
headerRow.createCell(1).setCellValue("俄罗斯");  
headerRow.createCell(2).setCellValue("中国");  
// 填充数据行  
Row dataRow = sheet.createRow(1);  
dataRow.createCell(0).setCellValue("GDP（万亿美元）");  
dataRow.createCell(1).setCellValue(1.78);  
dataRow.createCell(2).setCellValue(17.96);  

// 定义图表位置与尺寸  
XSSFDrawing drawing = sheet.createDrawingPatriarch();  
XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 5, 10, 20);  

// 创建图表对象  
XSSFChart chart = drawing.createChart(anchor);  
chart.setTitleText("国家GDP趋势分析");  

// 绑定数据源  
XDDFDataSource<String> countries = XDDFDataSourcesFactory.fromStringCellRange(sheet, new CellRangeAddress(0, 0, 1, 2));  
XDDFNumericalDataSource<Double> values = XDDFDataSourcesFactory.fromNumericCellRange(sheet, new CellRangeAddress(1, 1, 1, 2));  

// 配置坐标轴与样式  
XDDFCategoryAxis xAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);  
XDDFValueAxis yAxis = chart.createValueAxis(AxisPosition.LEFT);  
XDDFLineChartData data = (XDDFLineChartData) chart.createData(ChartTypes.LINE, xAxis, yAxis);  

// 添加数据系列并渲染  
XDDFLineChartData.Series series = data.addSeries(countries, values);  
series.setTitle("GDP", null);  
chart.plot(data);  

XDDFBarChartData data = (XDDFBarChartData) chart.createData(ChartTypes.BAR, xAxis, yAxis);  

XDDFPieChartData data = (XDDFPieChartData) chart.createData(ChartTypes.PIE, null, null);  
XDDFPieChartData.Series series = data.addSeries(countries, values);  
chart.plot(data);  
// 启用百分比标签  
chart.getCTChart().getPlotArea().getPieChartArray(0).addNewDLbls().addNewShowPercent().setVal(true);  

CellRangeAddress valuesRange = new CellRangeAddress(1, 1, 1, sheet.getRow(1).getLastCellNum());