创建 oooxml 图表。 org.apache.poi
Create oooxml chart. with org.apache.poi
我目前正在使用 org.apache.poi 和 oooxml 库制作 Excel 图表。我开发了下图。
enter image description here
enter image description here
XSSFDrawing drawing = (XSSFDrawing)sheet.createDrawingPatriarch();
ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 35, 20, 57);
XSSFChart chart = drawing.createChart(anchor);
CTChart ctChart = ((XSSFChart)chart).getCTChart();
CTPlotArea ctPlotArea = ctChart.getPlotArea();
//여기까지는 똑같음
//the first bar chart
CTBarChart ctBarChart = ctPlotArea.addNewBarChart();
CTBoolean ctBoolean = ctBarChart.addNewVaryColors();
ctBoolean.setVal(true);
ctBarChart.addNewBarDir().setVal(STBarDir.COL);
//the first chart series
CTBarSer ctBarSer = ctBarChart.addNewSer();
CTSerTx ctSerTx = ctBarSer.addNewTx();
CTStrRef ctStrRef = ctSerTx.addNewStrRef();
ctStrRef.setF("Sheet1!$B");
ctBarSer.addNewIdx().setVal(0);
CTAxDataSource ctAxDataSource = ctBarSer.addNewCat();
ctStrRef = ctAxDataSource.addNewStrRef();
ctStrRef.setF("Sheet1!$A:$A");
CTNumDataSource ctNumDataSource = ctBarSer.addNewVal();
CTNumRef ctNumRef = ctNumDataSource.addNewNumRef();
ctNumRef.setF("Sheet1!$B:$B");
//the second chart series
CTBarSer ctBarSer1 = ctBarChart.addNewSer();
CTSerTx ctSerTx1 = ctBarSer1.addNewTx();
CTStrRef ctStrRef1 = ctSerTx1.addNewStrRef();
ctStrRef1.setF("Sheet1!$C");
ctBarSer1.addNewIdx().setVal(1);
CTAxDataSource ctAxDataSource1 = ctBarSer1.addNewCat();
ctStrRef1 = ctAxDataSource1.addNewStrRef();
ctStrRef1.setF("Sheet1!$A:$A");
CTNumDataSource ctNumDataSource1 = ctBarSer1.addNewVal();
CTNumRef ctNumRef1 = ctNumDataSource1.addNewNumRef();
ctNumRef1.setF("Sheet1!$C:$C");
// 3번째
CTBarSer ctBarSer2 = ctBarChart.addNewSer();
CTSerTx ctSerTx2 = ctBarSer2.addNewTx();
CTStrRef ctStrRef2 = ctSerTx2.addNewStrRef();
ctStrRef2.setF("Sheet1!$D");
ctBarSer2.addNewIdx().setVal(2);
CTAxDataSource ctAxDataSource2 = ctBarSer2.addNewCat();
ctStrRef2 = ctAxDataSource2.addNewStrRef();
ctStrRef2.setF("Sheet1!$A:$A");
CTNumDataSource ctNumDataSource2 = ctBarSer2.addNewVal();
CTNumRef ctNumRef2 = ctNumDataSource2.addNewNumRef();
ctNumRef2.setF("Sheet1!$D:$D");
//at least the border lines in Libreoffice Calc ;-)
ctBarSer.addNewSpPr().addNewLn().addNewSolidFill().addNewSrgbClr().setVal(new byte[] {0,0,0});
ctBarSer1.addNewSpPr().addNewLn().addNewSolidFill().addNewSrgbClr().setVal(new byte[] {0,0,0});
ctBarSer2.addNewSpPr().addNewLn().addNewSolidFill().addNewSrgbClr().setVal(new byte[] {0,0,0});
ctBarChart.addNewAxId().setVal(123456); //cat axis 1 (lines)
ctBarChart.addNewAxId().setVal(123457); //val axis 1 (left)
ctBarChart.addNewAxId().setVal(123458); //val axis 1 (right)
ctBarChart.addNewAxId().setVal(123459); //val axis 1 (right)
//cat axis 1
CTCatAx ctCatAx = ctPlotArea.addNewCatAx();
ctCatAx.addNewAxId().setVal(123456); //id of the cat axis
CTScaling ctScaling = ctCatAx.addNewScaling();
ctScaling.addNewOrientation().setVal(STOrientation.MIN_MAX);
ctCatAx.addNewDelete().setVal(false);
ctCatAx.addNewAxPos().setVal(STAxPos.B);
ctCatAx.addNewCrossAx().setVal(123457); //id of the val axis
ctCatAx.addNewTickLblPos().setVal(STTickLblPos.NEXT_TO);
//val axis 1 (left)
CTValAx ctValAx = ctPlotArea.addNewValAx();
ctValAx.addNewAxId().setVal(123457); //id of the val axis
ctScaling = ctValAx.addNewScaling();
ctScaling.addNewOrientation().setVal(STOrientation.MIN_MAX);
ctValAx.addNewDelete().setVal(false);
ctValAx.addNewAxPos().setVal(STAxPos.L);
ctValAx.addNewCrossAx().setVal(123456); //id of the cat axis
ctValAx.addNewCrosses().setVal(STCrosses.AUTO_ZERO); //this val axis crosses the cat axis at zero
ctValAx.addNewTickLblPos().setVal(STTickLblPos.NEXT_TO);
关于“transmission=C cell”的数量，单位很大，所以我想在右边再做一个数值轴，但是一直报错，所以才问。如何在右边创建一个valueaxis，根据右边的“传输次数”，根据左边的“用户D单元格，传输计数B单元格”生成图表？
从 apache poi 4 开始，您应该使用新的 XDDF 类 来创建图表。使用低级别 CT* 类 非常复杂且容易出错。
使用折线图，我已经在此处提供了示例：。
但是使用条形图还有一个问题需要解决。如果一个条形图系列在主轴上而另一个在次轴上，则条形图将相互重叠。这是因为每个系列都仅针对使用相同轴的那些系列。换句话说，在图表上采用 space 时，主轴上的系列不尊重次轴上的系列。对于折线图，这不是问题，但对于条形图，它是。
为了解决这个具有虚拟数据（全为 0）的附加系列，可以在两个轴上使用。这些额外的系列导致不可见的条形图（高度 0）也需要 space，因此可用于移动可见的条形图。
下面的完整示例说明了这一点。它已经过测试，可以使用 apache poi 4.1.2 和 apache poi 5.1.0.
import java.io.*;
import org.apache.poi.xwpf.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xddf.usermodel.*;
import org.apache.poi.xddf.usermodel.chart.*;
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 CreateExcelXDDFChart {
public static void main(String[] args) throws Exception {
try (XSSFWorkbook document = new XSSFWorkbook()) {
XSSFSheet chartSheet = document.createSheet("chart");
XSSFSheet dataSheet = document.createSheet("data");
// create the data
String[] categories = new String[] { "c1", "c2", "c3", "c4", "c5", "c6", "c7", "c8", "c9" };
Double[] values1 = new Double[] { 1d, 2d, 3d, 4d, 5d, 6d, 7d, 8d, 9d };
Double[] values2 = new Double[] { 200d, 300d, 400d, 500d, 600d, 700d, 800d, 900d, 1000d };
int r = 0;
for (String cat : categories) {
dataSheet.createRow(r).createCell(0).setCellValue(cat);
dataSheet.getRow(r).createCell(1).setCellValue(values1[r]);
dataSheet.getRow(r).createCell(2).setCellValue(values2[r]);
r++;
}
// create the chart
XSSFDrawing drawing = chartSheet.createDrawingPatriarch();
XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 0, 16, 22);
XDDFChart chart = drawing.createChart(anchor);
// create data sources
int numOfPoints = categories.length;
// dummy 0-values for the pad data source
Double[] dummyValuesForPad = new Double[numOfPoints];
for (int i = 0; i < numOfPoints; i++) {
dummyValuesForPad[i] = 0d;
}
XDDFDataSource<String> categoriesData = XDDFDataSourcesFactory.fromStringCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 0, 0));
XDDFNumericalDataSource<Double> valuesData1 = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 1, 1));
XDDFNumericalDataSource<Double> valuesData2 = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 2, 2));
// data source for the pad series
XDDFNumericalDataSource<Double> pad = XDDFDataSourcesFactory.fromArray(dummyValuesForPad);
// first bar chart
XDDFCategoryAxis bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);
leftAxis.setCrossBetween(AxisCrossBetween.BETWEEN);
XDDFChartData data = chart.createData(ChartTypes.BAR, bottomAxis, leftAxis);
XDDFBarChartData bar = (XDDFBarChartData) data;
bar.setBarDirection(BarDirection.COL);
XDDFChartData.Series series = data.addSeries(categoriesData, valuesData1);
series.setTitle("Series 1", null);
// additional pad series - takes space at right side for primary axis
series = data.addSeries(categoriesData, pad);
series.setTitle("pad", null);
chart.plot(data);
// second bar chart
// bottom axis must be there but must not be visible
bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
bottomAxis.setVisible(false);
XDDFValueAxis rightAxis = chart.createValueAxis(AxisPosition.RIGHT);
rightAxis.setCrosses(AxisCrosses.MAX);
rightAxis.setCrossBetween(AxisCrossBetween.BETWEEN);
// set correct cross axis
bottomAxis.crossAxis(rightAxis);
rightAxis.crossAxis(bottomAxis);
data = chart.createData(ChartTypes.BAR, bottomAxis, rightAxis);
bar = (XDDFBarChartData) data;
bar.setBarDirection(BarDirection.COL);
// additional pad series - takes space at left side for secondary axis
series = data.addSeries(categoriesData, pad);
series.setTitle("pad", null);
series = data.addSeries(categoriesData, valuesData2);
series.setTitle("Series 2", null);
chart.plot(data);
// Write the output to a file
try (FileOutputStream fileOut = new FileOutputStream("CreateExcelXDDFChart.xlsx")) {
document.write(fileOut);
}
}
}
}
以上示例在使用 Microsoft Excel 显示生成的 *.xlsx 文件时有效。但是其他一些电子表格计算应用程序无法使用数组文字 ({0,0,0,0,0,0,0,0,0}) 作为图表系列的数据源。因此，更兼容的解决方案将使用未使用的单元格范围作为附加虚拟系列的数据源。例如，为此使用列 IV：
...
// dummy 0-values for the pad data source in column IV
for (int r = 0; r < numOfPoints; r++) {
XSSFRow row = dataSheet.getRow(r); if (row == null) row = dataSheet.createRow(r);
XSSFCell cell = row.createCell(255);
cell.setCellValue(0);
}
// data source for the pad series
XDDFNumericalDataSource<Double> pad = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 255, 255));
...
并且出于兼容性原因，您应该像 BarChart.java 中的 apache poi 示例那样设置条形颜色，该示例在 https://svn.apache.org/repos/asf/poi/trunk/poi-examples/src/main/java/org/apache/poi/examples/xssf/usermodel/ 中可用。如果没有给定颜色，其他一些电子表格计算应用程序将不会自动选择颜色，Excel 会。
如果您在一个条形图中有多个系列，则在使用另一个轴的另一个条形图中需要更多的垫系列。需要 pad 系列来移动可见的条形系列并确定它们的条形宽度。因此，如果您在使用左轴的第一个图表上有两个可见条形系列，在使用右轴的第二个图表上有一个可见条形系列，那么您需要一个额外的 pad 系列作为第一个条形图中的最后一个系列，并且您需要两个 pad 系列作为第二个条形图中的第一个系列。换句话说，您需要尽可能多的 pad 系列，两个条形图都具有相同的系列数，才能在两者中具有相同的条宽。而不可见的 pad 系列的位置决定了可见的 bar 系列如何移动。
需要图例的话pad系列就打扰了。所以你需要从图例中删除它们。在 中，我展示了如何做到这一点。
我将提供另一个完整的例子来展示这一切：
import java.io.*;
import org.apache.poi.xwpf.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xddf.usermodel.*;
import org.apache.poi.xddf.usermodel.chart.*;
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.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class CreateExcelXDDFChart {
public static void main(String[] args) throws Exception {
try (XSSFWorkbook document = new XSSFWorkbook()) {
XSSFSheet chartSheet = document.createSheet("chart");
XSSFSheet dataSheet = document.createSheet("data");
// create the data
String[] categories = new String[] { "c1", "c2", "c3", "c4", "c5", "c6", "c7", "c8", "c9" };
Double[] values1 = new Double[] { 1d, 2d, 3d, 4d, 5d, 6d, 7d, 8d, 9d };
Double[] values2 = new Double[] { 200d, 300d, 400d, 500d, 600d, 700d, 800d, 900d, 1000d };
Double[] values3 = new Double[] { 4.5d, 4d, 3.5d, 3d, 2.5d, 2d, 1.5d, 1d, 0.5d };
int r = 0;
for (String cat : categories) {
dataSheet.createRow(r).createCell(0).setCellValue(cat);
dataSheet.getRow(r).createCell(1).setCellValue(values1[r]);
dataSheet.getRow(r).createCell(2).setCellValue(values2[r]);
dataSheet.getRow(r).createCell(3).setCellValue(values3[r]);
r++;
}
// create the chart
XSSFDrawing drawing = chartSheet.createDrawingPatriarch();
XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 0, 16, 22);
XDDFChart chart = drawing.createChart(anchor);
// create data sources
int numOfPoints = categories.length;
XDDFDataSource<String> categoriesData = XDDFDataSourcesFactory.fromStringCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 0, 0));
XDDFNumericalDataSource<Double> valuesData1 = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 1, 1));
XDDFNumericalDataSource<Double> valuesData2 = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 2, 2));
XDDFNumericalDataSource<Double> valuesData3 = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 3, 3));
/*
// dummy 0-values for the pad data source
Double[] dummyValuesForPad = new Double[numOfPoints];
for (int i = 0; i < numOfPoints; i++) {
dummyValuesForPad[i] = 0d;
}
*/
// data source for the pad series
//XDDFNumericalDataSource<Double> pad = XDDFDataSourcesFactory.fromArray(dummyValuesForPad);
//XDDFNumericalDataSource<Double> pad = XDDFDataSourcesFactory.fromArray(dummyValuesForPad, null);
// dummy 0-values for the pad data source in column IV
for (int i = 0; i < numOfPoints; i++) {
XSSFRow row = dataSheet.getRow(i); if (row == null) row = dataSheet.createRow(i);
XSSFCell cell = row.createCell(255);
cell.setCellValue(0);
}
// data source for the pad series
XDDFNumericalDataSource<Double> pad = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 255, 255));
// first bar chart
XDDFCategoryAxis bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);
leftAxis.setCrossBetween(AxisCrossBetween.BETWEEN);
XDDFChartData data = chart.createData(ChartTypes.BAR, bottomAxis, leftAxis);
XDDFBarChartData bar = (XDDFBarChartData) data;
bar.setBarDirection(BarDirection.COL);
XDDFChartData.Series series = data.addSeries(categoriesData, valuesData1);
series.setTitle("Series 1", null);
series = data.addSeries(categoriesData, valuesData3);
series.setTitle("Series 3", null);
// additional pad series - takes space at right side for primary axis
series = data.addSeries(categoriesData, pad);
series.setTitle("pad", null);
chart.plot(data);
// set bar colors
solidFillSeries(data, 0, PresetColor.GREEN);
solidFillSeries(data, 1, PresetColor.BLUE);
// second bar chart
// bottom axis must be there but must not be visible
bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
bottomAxis.setVisible(false);
XDDFValueAxis rightAxis = chart.createValueAxis(AxisPosition.RIGHT);
rightAxis.setCrosses(AxisCrosses.MAX);
rightAxis.setCrossBetween(AxisCrossBetween.BETWEEN);
// set correct cross axis
bottomAxis.crossAxis(rightAxis);
rightAxis.crossAxis(bottomAxis);
data = chart.createData(ChartTypes.BAR, bottomAxis, rightAxis);
bar = (XDDFBarChartData) data;
bar.setBarDirection(BarDirection.COL);
// additional pad series - takes space at left side for secondary axis
series = data.addSeries(categoriesData, pad);
series.setTitle("pad", null);
series = data.addSeries(categoriesData, pad);
series.setTitle("pad", null);
series = data.addSeries(categoriesData, valuesData2);
series.setTitle("Series 2", null);
chart.plot(data);
// set bar colors
solidFillSeries(data, 2, PresetColor.RED);
// set legend
XDDFChartLegend legend = chart.getOrAddLegend();
legend.setPosition(LegendPosition.BOTTOM);
// set legend entries for pad series deleted
XDDFLegendEntry legendEntry = getOrAddLegendEntry(legend, 2);
legendEntry.setDelete(true);
legendEntry = getOrAddLegendEntry(legend, 3);
legendEntry.setDelete(true);
legendEntry = getOrAddLegendEntry(legend, 4);
legendEntry.setDelete(true);
// Write the output to a file
try (FileOutputStream fileOut = new FileOutputStream("CreateExcelXDDFChart.xlsx")) {
document.write(fileOut);
}
}
}
private static XDDFLegendEntry getOrAddLegendEntry(XDDFChartLegend legend, long index) {
XDDFLegendEntry legendEntry = null;
for (XDDFLegendEntry storedLegendEntry : legend.getEntries()) {
if (storedLegendEntry.getIndex() == index) {
legendEntry = storedLegendEntry;
break;
}
}
if (legendEntry == null) {
legendEntry = legend.addEntry();
legendEntry.setIndex(index);
}
return legendEntry;
}
private static void solidFillSeries(XDDFChartData data, int index, PresetColor color) {
XDDFSolidFillProperties fill = new XDDFSolidFillProperties(XDDFColor.from(color));
XDDFChartData.Series series = data.getSeries(index);
XDDFShapeProperties properties = series.getShapeProperties();
if (properties == null) {
properties = new XDDFShapeProperties();
}
properties.setFillProperties(fill);
series.setShapeProperties(properties);
}
}
我目前正在使用 org.apache.poi 和 oooxml 库制作 Excel 图表。我开发了下图。
enter image description here
enter image description here
XSSFDrawing drawing = (XSSFDrawing)sheet.createDrawingPatriarch();
ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 35, 20, 57);
XSSFChart chart = drawing.createChart(anchor);
CTChart ctChart = ((XSSFChart)chart).getCTChart();
CTPlotArea ctPlotArea = ctChart.getPlotArea();
//여기까지는 똑같음
//the first bar chart
CTBarChart ctBarChart = ctPlotArea.addNewBarChart();
CTBoolean ctBoolean = ctBarChart.addNewVaryColors();
ctBoolean.setVal(true);
ctBarChart.addNewBarDir().setVal(STBarDir.COL);
//the first chart series
CTBarSer ctBarSer = ctBarChart.addNewSer();
CTSerTx ctSerTx = ctBarSer.addNewTx();
CTStrRef ctStrRef = ctSerTx.addNewStrRef();
ctStrRef.setF("Sheet1!$B");
ctBarSer.addNewIdx().setVal(0);
CTAxDataSource ctAxDataSource = ctBarSer.addNewCat();
ctStrRef = ctAxDataSource.addNewStrRef();
ctStrRef.setF("Sheet1!$A:$A");
CTNumDataSource ctNumDataSource = ctBarSer.addNewVal();
CTNumRef ctNumRef = ctNumDataSource.addNewNumRef();
ctNumRef.setF("Sheet1!$B:$B");
//the second chart series
CTBarSer ctBarSer1 = ctBarChart.addNewSer();
CTSerTx ctSerTx1 = ctBarSer1.addNewTx();
CTStrRef ctStrRef1 = ctSerTx1.addNewStrRef();
ctStrRef1.setF("Sheet1!$C");
ctBarSer1.addNewIdx().setVal(1);
CTAxDataSource ctAxDataSource1 = ctBarSer1.addNewCat();
ctStrRef1 = ctAxDataSource1.addNewStrRef();
ctStrRef1.setF("Sheet1!$A:$A");
CTNumDataSource ctNumDataSource1 = ctBarSer1.addNewVal();
CTNumRef ctNumRef1 = ctNumDataSource1.addNewNumRef();
ctNumRef1.setF("Sheet1!$C:$C");
// 3번째
CTBarSer ctBarSer2 = ctBarChart.addNewSer();
CTSerTx ctSerTx2 = ctBarSer2.addNewTx();
CTStrRef ctStrRef2 = ctSerTx2.addNewStrRef();
ctStrRef2.setF("Sheet1!$D");
ctBarSer2.addNewIdx().setVal(2);
CTAxDataSource ctAxDataSource2 = ctBarSer2.addNewCat();
ctStrRef2 = ctAxDataSource2.addNewStrRef();
ctStrRef2.setF("Sheet1!$A:$A");
CTNumDataSource ctNumDataSource2 = ctBarSer2.addNewVal();
CTNumRef ctNumRef2 = ctNumDataSource2.addNewNumRef();
ctNumRef2.setF("Sheet1!$D:$D");
//at least the border lines in Libreoffice Calc ;-)
ctBarSer.addNewSpPr().addNewLn().addNewSolidFill().addNewSrgbClr().setVal(new byte[] {0,0,0});
ctBarSer1.addNewSpPr().addNewLn().addNewSolidFill().addNewSrgbClr().setVal(new byte[] {0,0,0});
ctBarSer2.addNewSpPr().addNewLn().addNewSolidFill().addNewSrgbClr().setVal(new byte[] {0,0,0});
ctBarChart.addNewAxId().setVal(123456); //cat axis 1 (lines)
ctBarChart.addNewAxId().setVal(123457); //val axis 1 (left)
ctBarChart.addNewAxId().setVal(123458); //val axis 1 (right)
ctBarChart.addNewAxId().setVal(123459); //val axis 1 (right)
//cat axis 1
CTCatAx ctCatAx = ctPlotArea.addNewCatAx();
ctCatAx.addNewAxId().setVal(123456); //id of the cat axis
CTScaling ctScaling = ctCatAx.addNewScaling();
ctScaling.addNewOrientation().setVal(STOrientation.MIN_MAX);
ctCatAx.addNewDelete().setVal(false);
ctCatAx.addNewAxPos().setVal(STAxPos.B);
ctCatAx.addNewCrossAx().setVal(123457); //id of the val axis
ctCatAx.addNewTickLblPos().setVal(STTickLblPos.NEXT_TO);
//val axis 1 (left)
CTValAx ctValAx = ctPlotArea.addNewValAx();
ctValAx.addNewAxId().setVal(123457); //id of the val axis
ctScaling = ctValAx.addNewScaling();
ctScaling.addNewOrientation().setVal(STOrientation.MIN_MAX);
ctValAx.addNewDelete().setVal(false);
ctValAx.addNewAxPos().setVal(STAxPos.L);
ctValAx.addNewCrossAx().setVal(123456); //id of the cat axis
ctValAx.addNewCrosses().setVal(STCrosses.AUTO_ZERO); //this val axis crosses the cat axis at zero
ctValAx.addNewTickLblPos().setVal(STTickLblPos.NEXT_TO);
关于“transmission=C cell”的数量，单位很大，所以我想在右边再做一个数值轴，但是一直报错，所以才问。如何在右边创建一个valueaxis，根据右边的“传输次数”，根据左边的“用户D单元格，传输计数B单元格”生成图表？
从 apache poi 4 开始，您应该使用新的 XDDF 类 来创建图表。使用低级别 CT* 类 非常复杂且容易出错。
使用折线图，我已经在此处提供了示例：
但是使用条形图还有一个问题需要解决。如果一个条形图系列在主轴上而另一个在次轴上，则条形图将相互重叠。这是因为每个系列都仅针对使用相同轴的那些系列。换句话说，在图表上采用 space 时，主轴上的系列不尊重次轴上的系列。对于折线图，这不是问题，但对于条形图，它是。
为了解决这个具有虚拟数据（全为 0）的附加系列，可以在两个轴上使用。这些额外的系列导致不可见的条形图（高度 0）也需要 space，因此可用于移动可见的条形图。
下面的完整示例说明了这一点。它已经过测试，可以使用 apache poi 4.1.2 和 apache poi 5.1.0.
import java.io.*;
import org.apache.poi.xwpf.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xddf.usermodel.*;
import org.apache.poi.xddf.usermodel.chart.*;
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 CreateExcelXDDFChart {
public static void main(String[] args) throws Exception {
try (XSSFWorkbook document = new XSSFWorkbook()) {
XSSFSheet chartSheet = document.createSheet("chart");
XSSFSheet dataSheet = document.createSheet("data");
// create the data
String[] categories = new String[] { "c1", "c2", "c3", "c4", "c5", "c6", "c7", "c8", "c9" };
Double[] values1 = new Double[] { 1d, 2d, 3d, 4d, 5d, 6d, 7d, 8d, 9d };
Double[] values2 = new Double[] { 200d, 300d, 400d, 500d, 600d, 700d, 800d, 900d, 1000d };
int r = 0;
for (String cat : categories) {
dataSheet.createRow(r).createCell(0).setCellValue(cat);
dataSheet.getRow(r).createCell(1).setCellValue(values1[r]);
dataSheet.getRow(r).createCell(2).setCellValue(values2[r]);
r++;
}
// create the chart
XSSFDrawing drawing = chartSheet.createDrawingPatriarch();
XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 0, 16, 22);
XDDFChart chart = drawing.createChart(anchor);
// create data sources
int numOfPoints = categories.length;
// dummy 0-values for the pad data source
Double[] dummyValuesForPad = new Double[numOfPoints];
for (int i = 0; i < numOfPoints; i++) {
dummyValuesForPad[i] = 0d;
}
XDDFDataSource<String> categoriesData = XDDFDataSourcesFactory.fromStringCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 0, 0));
XDDFNumericalDataSource<Double> valuesData1 = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 1, 1));
XDDFNumericalDataSource<Double> valuesData2 = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 2, 2));
// data source for the pad series
XDDFNumericalDataSource<Double> pad = XDDFDataSourcesFactory.fromArray(dummyValuesForPad);
// first bar chart
XDDFCategoryAxis bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);
leftAxis.setCrossBetween(AxisCrossBetween.BETWEEN);
XDDFChartData data = chart.createData(ChartTypes.BAR, bottomAxis, leftAxis);
XDDFBarChartData bar = (XDDFBarChartData) data;
bar.setBarDirection(BarDirection.COL);
XDDFChartData.Series series = data.addSeries(categoriesData, valuesData1);
series.setTitle("Series 1", null);
// additional pad series - takes space at right side for primary axis
series = data.addSeries(categoriesData, pad);
series.setTitle("pad", null);
chart.plot(data);
// second bar chart
// bottom axis must be there but must not be visible
bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
bottomAxis.setVisible(false);
XDDFValueAxis rightAxis = chart.createValueAxis(AxisPosition.RIGHT);
rightAxis.setCrosses(AxisCrosses.MAX);
rightAxis.setCrossBetween(AxisCrossBetween.BETWEEN);
// set correct cross axis
bottomAxis.crossAxis(rightAxis);
rightAxis.crossAxis(bottomAxis);
data = chart.createData(ChartTypes.BAR, bottomAxis, rightAxis);
bar = (XDDFBarChartData) data;
bar.setBarDirection(BarDirection.COL);
// additional pad series - takes space at left side for secondary axis
series = data.addSeries(categoriesData, pad);
series.setTitle("pad", null);
series = data.addSeries(categoriesData, valuesData2);
series.setTitle("Series 2", null);
chart.plot(data);
// Write the output to a file
try (FileOutputStream fileOut = new FileOutputStream("CreateExcelXDDFChart.xlsx")) {
document.write(fileOut);
}
}
}
}
以上示例在使用 Microsoft Excel 显示生成的 *.xlsx 文件时有效。但是其他一些电子表格计算应用程序无法使用数组文字 ({0,0,0,0,0,0,0,0,0}) 作为图表系列的数据源。因此，更兼容的解决方案将使用未使用的单元格范围作为附加虚拟系列的数据源。例如，为此使用列 IV：
...
// dummy 0-values for the pad data source in column IV
for (int r = 0; r < numOfPoints; r++) {
XSSFRow row = dataSheet.getRow(r); if (row == null) row = dataSheet.createRow(r);
XSSFCell cell = row.createCell(255);
cell.setCellValue(0);
}
// data source for the pad series
XDDFNumericalDataSource<Double> pad = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 255, 255));
...
并且出于兼容性原因，您应该像 BarChart.java 中的 apache poi 示例那样设置条形颜色，该示例在 https://svn.apache.org/repos/asf/poi/trunk/poi-examples/src/main/java/org/apache/poi/examples/xssf/usermodel/ 中可用。如果没有给定颜色，其他一些电子表格计算应用程序将不会自动选择颜色，Excel 会。
如果您在一个条形图中有多个系列，则在使用另一个轴的另一个条形图中需要更多的垫系列。需要 pad 系列来移动可见的条形系列并确定它们的条形宽度。因此，如果您在使用左轴的第一个图表上有两个可见条形系列，在使用右轴的第二个图表上有一个可见条形系列，那么您需要一个额外的 pad 系列作为第一个条形图中的最后一个系列，并且您需要两个 pad 系列作为第二个条形图中的第一个系列。换句话说，您需要尽可能多的 pad 系列，两个条形图都具有相同的系列数，才能在两者中具有相同的条宽。而不可见的 pad 系列的位置决定了可见的 bar 系列如何移动。
需要图例的话pad系列就打扰了。所以你需要从图例中删除它们。在
我将提供另一个完整的例子来展示这一切：
import java.io.*;
import org.apache.poi.xwpf.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xddf.usermodel.*;
import org.apache.poi.xddf.usermodel.chart.*;
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.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class CreateExcelXDDFChart {
public static void main(String[] args) throws Exception {
try (XSSFWorkbook document = new XSSFWorkbook()) {
XSSFSheet chartSheet = document.createSheet("chart");
XSSFSheet dataSheet = document.createSheet("data");
// create the data
String[] categories = new String[] { "c1", "c2", "c3", "c4", "c5", "c6", "c7", "c8", "c9" };
Double[] values1 = new Double[] { 1d, 2d, 3d, 4d, 5d, 6d, 7d, 8d, 9d };
Double[] values2 = new Double[] { 200d, 300d, 400d, 500d, 600d, 700d, 800d, 900d, 1000d };
Double[] values3 = new Double[] { 4.5d, 4d, 3.5d, 3d, 2.5d, 2d, 1.5d, 1d, 0.5d };
int r = 0;
for (String cat : categories) {
dataSheet.createRow(r).createCell(0).setCellValue(cat);
dataSheet.getRow(r).createCell(1).setCellValue(values1[r]);
dataSheet.getRow(r).createCell(2).setCellValue(values2[r]);
dataSheet.getRow(r).createCell(3).setCellValue(values3[r]);
r++;
}
// create the chart
XSSFDrawing drawing = chartSheet.createDrawingPatriarch();
XSSFClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 0, 16, 22);
XDDFChart chart = drawing.createChart(anchor);
// create data sources
int numOfPoints = categories.length;
XDDFDataSource<String> categoriesData = XDDFDataSourcesFactory.fromStringCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 0, 0));
XDDFNumericalDataSource<Double> valuesData1 = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 1, 1));
XDDFNumericalDataSource<Double> valuesData2 = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 2, 2));
XDDFNumericalDataSource<Double> valuesData3 = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 3, 3));
/*
// dummy 0-values for the pad data source
Double[] dummyValuesForPad = new Double[numOfPoints];
for (int i = 0; i < numOfPoints; i++) {
dummyValuesForPad[i] = 0d;
}
*/
// data source for the pad series
//XDDFNumericalDataSource<Double> pad = XDDFDataSourcesFactory.fromArray(dummyValuesForPad);
//XDDFNumericalDataSource<Double> pad = XDDFDataSourcesFactory.fromArray(dummyValuesForPad, null);
// dummy 0-values for the pad data source in column IV
for (int i = 0; i < numOfPoints; i++) {
XSSFRow row = dataSheet.getRow(i); if (row == null) row = dataSheet.createRow(i);
XSSFCell cell = row.createCell(255);
cell.setCellValue(0);
}
// data source for the pad series
XDDFNumericalDataSource<Double> pad = XDDFDataSourcesFactory.fromNumericCellRange(dataSheet, new CellRangeAddress(0, numOfPoints-1, 255, 255));
// first bar chart
XDDFCategoryAxis bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
XDDFValueAxis leftAxis = chart.createValueAxis(AxisPosition.LEFT);
leftAxis.setCrosses(AxisCrosses.AUTO_ZERO);
leftAxis.setCrossBetween(AxisCrossBetween.BETWEEN);
XDDFChartData data = chart.createData(ChartTypes.BAR, bottomAxis, leftAxis);
XDDFBarChartData bar = (XDDFBarChartData) data;
bar.setBarDirection(BarDirection.COL);
XDDFChartData.Series series = data.addSeries(categoriesData, valuesData1);
series.setTitle("Series 1", null);
series = data.addSeries(categoriesData, valuesData3);
series.setTitle("Series 3", null);
// additional pad series - takes space at right side for primary axis
series = data.addSeries(categoriesData, pad);
series.setTitle("pad", null);
chart.plot(data);
// set bar colors
solidFillSeries(data, 0, PresetColor.GREEN);
solidFillSeries(data, 1, PresetColor.BLUE);
// second bar chart
// bottom axis must be there but must not be visible
bottomAxis = chart.createCategoryAxis(AxisPosition.BOTTOM);
bottomAxis.setVisible(false);
XDDFValueAxis rightAxis = chart.createValueAxis(AxisPosition.RIGHT);
rightAxis.setCrosses(AxisCrosses.MAX);
rightAxis.setCrossBetween(AxisCrossBetween.BETWEEN);
// set correct cross axis
bottomAxis.crossAxis(rightAxis);
rightAxis.crossAxis(bottomAxis);
data = chart.createData(ChartTypes.BAR, bottomAxis, rightAxis);
bar = (XDDFBarChartData) data;
bar.setBarDirection(BarDirection.COL);
// additional pad series - takes space at left side for secondary axis
series = data.addSeries(categoriesData, pad);
series.setTitle("pad", null);
series = data.addSeries(categoriesData, pad);
series.setTitle("pad", null);
series = data.addSeries(categoriesData, valuesData2);
series.setTitle("Series 2", null);
chart.plot(data);
// set bar colors
solidFillSeries(data, 2, PresetColor.RED);
// set legend
XDDFChartLegend legend = chart.getOrAddLegend();
legend.setPosition(LegendPosition.BOTTOM);
// set legend entries for pad series deleted
XDDFLegendEntry legendEntry = getOrAddLegendEntry(legend, 2);
legendEntry.setDelete(true);
legendEntry = getOrAddLegendEntry(legend, 3);
legendEntry.setDelete(true);
legendEntry = getOrAddLegendEntry(legend, 4);
legendEntry.setDelete(true);
// Write the output to a file
try (FileOutputStream fileOut = new FileOutputStream("CreateExcelXDDFChart.xlsx")) {
document.write(fileOut);
}
}
}
private static XDDFLegendEntry getOrAddLegendEntry(XDDFChartLegend legend, long index) {
XDDFLegendEntry legendEntry = null;
for (XDDFLegendEntry storedLegendEntry : legend.getEntries()) {
if (storedLegendEntry.getIndex() == index) {
legendEntry = storedLegendEntry;
break;
}
}
if (legendEntry == null) {
legendEntry = legend.addEntry();
legendEntry.setIndex(index);
}
return legendEntry;
}
private static void solidFillSeries(XDDFChartData data, int index, PresetColor color) {
XDDFSolidFillProperties fill = new XDDFSolidFillProperties(XDDFColor.from(color));
XDDFChartData.Series series = data.getSeries(index);
XDDFShapeProperties properties = series.getShapeProperties();
if (properties == null) {
properties = new XDDFShapeProperties();
}
properties.setFillProperties(fill);
series.setShapeProperties(properties);
}
}