apache poi 4.0条形图示例不起作用

Question

当我在尝试apache poi4.0的项目示例时，我遇到了创建条形图的问题，运行代码后，我打开带有错误消息的xlsx文件 Excel found unreadable content in 'xxx.xlsx'. Do you want to recover the contents of this workbook? If you trust the source of the workbook, click Yes. 点击yes然后获取另一个消息

Excel was able to open the file by repairing or removing the unreadable content.
Removed Part: /xl/drawings/drawing1.xml part (Drawing shape).

单击close，然后在Excel中没有添加图表，但数据很好。 然后我尝试lineChart和scatterChart示例，面临同样的问题。 这个错误的最可能原因是什么以及如何解决这个问题？ 提前致谢。 :)

package org.apache.poi.xssf.usermodel.examples;

import java.io.FileOutputStream;
import java.io.IOException;

import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xddf.usermodel.PresetColor;
import org.apache.poi.xddf.usermodel.XDDFColor;
import org.apache.poi.xddf.usermodel.XDDFShapeProperties;
import org.apache.poi.xddf.usermodel.XDDFSolidFillProperties;
import org.apache.poi.xddf.usermodel.chart.AxisCrosses;
import org.apache.poi.xddf.usermodel.chart.AxisPosition;
import org.apache.poi.xddf.usermodel.chart.ChartTypes;
import org.apache.poi.xddf.usermodel.chart.LegendPosition;
import org.apache.poi.xddf.usermodel.chart.XDDFCategoryAxis;
import org.apache.poi.xddf.usermodel.chart.XDDFChartData;
import org.apache.poi.xddf.usermodel.chart.XDDFChartLegend;
import org.apache.poi.xddf.usermodel.chart.XDDFDataSource;
import org.apache.poi.xddf.usermodel.chart.XDDFDataSourcesFactory;
import org.apache.poi.xddf.usermodel.chart.XDDFNumericalDataSource;
import org.apache.poi.xddf.usermodel.chart.XDDFValueAxis;
import org.apache.poi.xssf.usermodel.XSSFChart;
import org.apache.poi.xssf.usermodel.XSSFClientAnchor;
import org.apache.poi.xssf.usermodel.XSSFDrawing;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;


public class BarChart {

  public static void main(String[] args) throws IOException {
    try (XSSFWorkbook wb = new XSSFWorkbook()) {
      XSSFSheet sheet = wb.createSheet("barchart");
      final int NUM_OF_ROWS = 3;
      final int NUM_OF_COLUMNS = 10;

      // Create a row and put some cells in it. Rows are 0 based.
      Row row;
      Cell cell;
      for (int rowIndex = 0; rowIndex < NUM_OF_ROWS; rowIndex++) {
        row = sheet.createRow((short) rowIndex);
        for (int colIndex = 0; colIndex < NUM_OF_COLUMNS; colIndex++) {
          cell = row.createCell((short) colIndex);
          cell.setCellValue(colIndex * (rowIndex + 1));
        }
      }

      XSSFDrawing drawing = sheet.createDrawingPatriarch();
      XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 5, 10, 15);

      XSSFChart chart = drawing.createChart(anchor);
      XDDFChartLegend legend = chart.getOrAddLegend();
      legend.setPosition(LegendPosition.TOP_RIGHT);

      // Use a category axis for the bottom axis.
      XDDFCategoryAxis bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
      XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
      leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);

      XDDFDataSource<Double> xs = XDDFDataSourcesFactory.fromNumericCellRange(sheet,
          new CellRangeAddress(0, 0, 0, NUM_OF_COLUMNS - 1));
      XDDFNumericalDataSource<Double> ys1 = XDDFDataSourcesFactory.fromNumericCellRange(sheet,
          new CellRangeAddress(1, 1, 0, NUM_OF_COLUMNS - 1));
      XDDFNumericalDataSource<Double> ys2 = XDDFDataSourcesFactory.fromNumericCellRange(sheet,
          new CellRangeAddress(2, 2, 0, NUM_OF_COLUMNS - 1));

      XDDFChartData data = chart.createData(ChartTypes.BAR, bottomAxis, leftAxis);
      data.addSeries(xs, ys1);
      data.addSeries(xs, ys2);
      chart.plot(data);

      XDDFSolidFillProperties fill = new XDDFSolidFillProperties(XDDFColor.from(PresetColor.CHARTREUSE));
      XDDFChartData.Series firstSeries = data.getSeries().get(0);
      XDDFShapeProperties properties = firstSeries.getShapeProperties();
      if (properties == null) {
        properties = new XDDFShapeProperties();
      }
      properties.setFillProperties(fill);
      firstSeries.setShapeProperties(properties);

      // Write the output to a file
      try (FileOutputStream fileOut = new FileOutputStream("ooxml-bar-chart.xlsx")) {
        wb.write(fileOut);
      }
    }
  }
}

Answer 1

新的XDDF代码缺乏axIds中barChart的设置，以及条形方向barDir的设置，其可以是柱形图的COL或条形图的BAR。

在/xl/charts/chart1.xml，这看起来像：

<c:barChart>
 <c:barDir val="bar"/>
 ...
 <c:axId val="0"/>
 <c:axId val="1"/>
</c:barChart>

用于条形图

和

<c:barChart>
 <c:barDir val="col"/>
 ...
 <c:axId val="0"/>
 <c:axId val="1"/>
</c:barChart>

对于柱形图。

添加：

...
      chart.plot(data);

      chart.getCTChart().getPlotArea().getBarChartArray(0).addNewBarDir().setVal(
       //org.openxmlformats.schemas.drawingml.x2006.chart.STBarDir.COL);
       org.openxmlformats.schemas.drawingml.x2006.chart.STBarDir.BAR);
      chart.getCTChart().getPlotArea().getBarChartArray(0).addNewAxId().setVal(bottomAxis.getId());
      chart.getCTChart().getPlotArea().getBarChartArray(0).addNewAxId().setVal(leftAxis.getId());
...

它至少会起作用。

轴设置也存在其他问题。这就是为什么我会说只使用高级别的apache poi的条形图创建还没有准备好。