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java - 使用 Apache POI 在 Excel 中创建条形图

转载 作者:塔克拉玛干 更新时间:2023-11-03 03:06:07 26 4
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我正在尝试使用 Apache POI 在 XLSX 电子表格中创建条形图,但当我尝试打开文件时,Excel 一直提示内容有问题并删除图表。这是我要执行的操作的完整代码:

public static void createBarChart() {

Workbook wb = new XSSFWorkbook();
Sheet sheet = wb.createSheet("Sheet2");
Row row;
Cell cell;

row = sheet.createRow(0);
row.createCell(0);
row.createCell(1).setCellValue("HEADER 1");
row.createCell(2).setCellValue("HEADER 2");
row.createCell(3).setCellValue("HEADER 3");

for (int r = 1; r < 5; r++) {
row = sheet.createRow(r);
cell = row.createCell(0);
cell.setCellValue("Serie " + r);
cell = row.createCell(1);
cell.setCellValue(123);
cell = row.createCell(2);
cell.setCellValue(456);
cell = row.createCell(3);
cell.setCellValue(789);
}

Drawing drawing = sheet.createDrawingPatriarch();
ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 5, 5, 20);

Chart chart = drawing.createChart(anchor);

CTChart ctChart = ((XSSFChart) chart).getCTChart();

ctChart.addNewTitle();

CTPlotArea ctPlotArea = ctChart.getPlotArea();
CTBarChart ctBarChart = ctPlotArea.addNewBarChart();

ctBarChart.addNewBarDir().setVal(STBarDir.COL);
ctBarChart.addNewGrouping().setVal(STBarGrouping.CLUSTERED);
ctBarChart.addNewVaryColors().setVal(false);

// First series
CTBarSer ctBarSer = ctBarChart.addNewSer();

ctBarSer.addNewIdx().setVal(0);
ctBarSer.addNewOrder().setVal(0);

// [01] Title
CTSerTx ctSerTx = ctBarSer.addNewTx();
CTStrRef ctSerTxStrRef = ctSerTx.addNewStrRef();
ctSerTxStrRef.setF("Sheet2!$A$2");

CTStrData strCache = ctSerTxStrRef.addNewStrCache();
strCache.addNewPtCount().setVal(1);
CTStrVal newPt = strCache.addNewPt();
newPt.setV("Serie 1");
newPt.setIdx(0);

// [01] SpPr
CTShapeProperties spPr = ctBarSer.addNewSpPr();
CTSolidColorFillProperties solidFill = spPr.addNewSolidFill();
solidFill.addNewSchemeClr().setVal(STSchemeColorValImpl.ACCENT_1);
spPr.addNewLn().addNewNoFill();
spPr.addNewEffectLst();

// [01] Invert if negative
ctBarSer.addNewInvertIfNegative().setVal(false);

// [01] Series titles
CTAxDataSource newCat = ctBarSer.addNewCat();
CTStrRef addNewStrRef = newCat.addNewStrRef();
addNewStrRef.setF("Sheet2!$B$1:$D$1");

CTStrData addNewStrCache = addNewStrRef.addNewStrCache();
addNewStrCache.addNewPtCount().setVal(3);

CTStrVal pt1 = addNewStrCache.addNewPt();
pt1.setIdx(0);
pt1.setV(sheet.getRow(0).getCell(1).getStringCellValue());

CTStrVal pt2 = addNewStrCache.addNewPt();
pt2.setIdx(1);
pt2.setV(sheet.getRow(0).getCell(2).getStringCellValue());

CTStrVal pt3 = addNewStrCache.addNewPt();
pt3.setIdx(2);
pt3.setV(sheet.getRow(0).getCell(3).getStringCellValue());

// [01] Series values
CTNumDataSource newVal = ctBarSer.addNewVal();
CTNumRef numRef = newVal.addNewNumRef();
numRef.setF("Sheet2!$B$2:$D$2");
CTNumData numCache = numRef.addNewNumCache();
numCache.addNewPtCount().setVal(3);

CTNumVal numpt1 = numCache.addNewPt();
numpt1.setIdx(0);
numpt1.setV(String.valueOf(sheet.getRow(1).getCell(1).getNumericCellValue()));

CTNumVal numpt2 = numCache.addNewPt();
numpt2.setIdx(1);
numpt2.setV(String.valueOf(sheet.getRow(1).getCell(2).getNumericCellValue()));

CTNumVal numpt3 = numCache.addNewPt();
numpt3.setIdx(2);
numpt3.setV(String.valueOf(sheet.getRow(1).getCell(3).getNumericCellValue()));

// dLbls
CTDLbls dLbls = ctBarChart.addNewDLbls();
dLbls.addNewShowBubbleSize().setVal(false);
dLbls.addNewShowLegendKey().setVal(false);
dLbls.addNewShowCatName().setVal(false);
dLbls.addNewShowSerName().setVal(false);
dLbls.addNewShowPercent().setVal(false);
dLbls.addNewShowVal().setVal(false);

FileOutputStream fileOut = new FileOutputStream("barchart.xlsx");
wb.write(fileOut);
wb.close();
fileOut.close();
}

谁能帮我找到(并解决)问题?提前致谢!

最佳答案

呸,难产 ;-)。对于不了解 Apache POI supports only ScatterCharts and LineCharts why? 背景的用户。描述了原则上如何进行。

正如我所说。先拿最简单可能的条形图进行测试。这是一个具有两个值的系列。然后你会发现你已经完全忘记了代码中的坐标轴。饼图没有轴。这就是为什么他们没有必要。但是如果没有轴,条形图将无法工作。

相反,您可以肆无忌惮地忘记所有名为“缓存”的东西。

是否需要其他东西,通过试错来决定。也可以阅读 Office OpenXML recommendation 。可能缺少所有具有 minOccurs <> "0"` 的元素会导致在打开工作簿时删除绘图。

条形图的简单示例:

import java.io.FileOutputStream;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.*;
import org.apache.poi.ss.usermodel.charts.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFChart;

import org.openxmlformats.schemas.drawingml.x2006.chart.CTChart;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTPlotArea;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTBarChart;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTBoolean;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTBarSer;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTAxDataSource;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTNumDataSource;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTNumRef;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTStrRef;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTSerTx;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTCatAx;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTValAx;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTScaling;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTLegend;
import org.openxmlformats.schemas.drawingml.x2006.chart.STAxPos;
import org.openxmlformats.schemas.drawingml.x2006.chart.STBarDir;
import org.openxmlformats.schemas.drawingml.x2006.chart.STOrientation;
import org.openxmlformats.schemas.drawingml.x2006.chart.STLegendPos;
import org.openxmlformats.schemas.drawingml.x2006.chart.STTickLblPos;

public class BarChart {

public static void main(String[] args) throws Exception {
Workbook wb = new XSSFWorkbook();
Sheet sheet = wb.createSheet("Sheet1");

Row row;
Cell cell;

row = sheet.createRow(0);
row.createCell(0);
row.createCell(1).setCellValue("HEADER 1");
row.createCell(2).setCellValue("HEADER 2");
row.createCell(3).setCellValue("HEADER 3");

for (int r = 1; r < 5; r++) {
row = sheet.createRow(r);
cell = row.createCell(0);
cell.setCellValue("Serie " + r);
cell = row.createCell(1);
cell.setCellValue(new java.util.Random().nextDouble());
cell = row.createCell(2);
cell.setCellValue(new java.util.Random().nextDouble());
cell = row.createCell(3);
cell.setCellValue(new java.util.Random().nextDouble());
}

Drawing drawing = sheet.createDrawingPatriarch();
ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 5, 8, 20);

Chart chart = drawing.createChart(anchor);

CTChart ctChart = ((XSSFChart)chart).getCTChart();
CTPlotArea ctPlotArea = ctChart.getPlotArea();
CTBarChart ctBarChart = ctPlotArea.addNewBarChart();
CTBoolean ctBoolean = ctBarChart.addNewVaryColors();
ctBoolean.setVal(true);
ctBarChart.addNewBarDir().setVal(STBarDir.COL);

for (int r = 2; r < 6; r++) {
CTBarSer ctBarSer = ctBarChart.addNewSer();
CTSerTx ctSerTx = ctBarSer.addNewTx();
CTStrRef ctStrRef = ctSerTx.addNewStrRef();
ctStrRef.setF("Sheet1!$A$" + r);
ctBarSer.addNewIdx().setVal(r-2);
CTAxDataSource cttAxDataSource = ctBarSer.addNewCat();
ctStrRef = cttAxDataSource.addNewStrRef();
ctStrRef.setF("Sheet1!$B$1:$D$1");
CTNumDataSource ctNumDataSource = ctBarSer.addNewVal();
CTNumRef ctNumRef = ctNumDataSource.addNewNumRef();
ctNumRef.setF("Sheet1!$B$" + r + ":$D$" + r);

//at least the border lines in Libreoffice Calc ;-)
ctBarSer.addNewSpPr().addNewLn().addNewSolidFill().addNewSrgbClr().setVal(new byte[] {0,0,0});

}

//telling the BarChart that it has axes and giving them Ids
ctBarChart.addNewAxId().setVal(123456);
ctBarChart.addNewAxId().setVal(123457);

//cat axis
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
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.addNewTickLblPos().setVal(STTickLblPos.NEXT_TO);

//legend
CTLegend ctLegend = ctChart.addNewLegend();
ctLegend.addNewLegendPos().setVal(STLegendPos.B);
ctLegend.addNewOverlay().setVal(false);

System.out.println(ctChart);

FileOutputStream fileOut = new FileOutputStream("BarChart.xlsx");
wb.write(fileOut);
fileOut.close();
}
}

此示例需要 FAQ-N10025 中提到的所有模式 ooxml-schemas-1.3.jar 的完整 jar。


以上代码一直有效到 apache poi 3.17

以下代码使用 apache poi 4.1.0 运行。它需要所有模式的完整 jar ooxml-schemas-1.4.jar

import java.io.FileOutputStream;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.*;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.apache.poi.xssf.usermodel.XSSFChart;
import org.apache.poi.xssf.usermodel.XSSFDrawing;

import org.openxmlformats.schemas.drawingml.x2006.chart.CTChart;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTPlotArea;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTBarChart;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTBoolean;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTBarSer;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTAxDataSource;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTNumDataSource;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTNumRef;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTStrRef;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTSerTx;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTCatAx;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTValAx;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTScaling;
import org.openxmlformats.schemas.drawingml.x2006.chart.CTLegend;
import org.openxmlformats.schemas.drawingml.x2006.chart.STAxPos;
import org.openxmlformats.schemas.drawingml.x2006.chart.STBarDir;
import org.openxmlformats.schemas.drawingml.x2006.chart.STOrientation;
import org.openxmlformats.schemas.drawingml.x2006.chart.STLegendPos;
import org.openxmlformats.schemas.drawingml.x2006.chart.STTickLblPos;

public class BarChart {

public static void main(String[] args) throws Exception {
Workbook wb = new XSSFWorkbook();
Sheet sheet = wb.createSheet("Sheet1");

Row row;
Cell cell;

row = sheet.createRow(0);
row.createCell(0);
row.createCell(1).setCellValue("HEADER 1");
row.createCell(2).setCellValue("HEADER 2");
row.createCell(3).setCellValue("HEADER 3");

for (int r = 1; r < 5; r++) {
row = sheet.createRow(r);
cell = row.createCell(0);
cell.setCellValue("Serie " + r);
cell = row.createCell(1);
cell.setCellValue(new java.util.Random().nextDouble());
cell = row.createCell(2);
cell.setCellValue(new java.util.Random().nextDouble());
cell = row.createCell(3);
cell.setCellValue(new java.util.Random().nextDouble());
}

XSSFDrawing drawing = (XSSFDrawing)sheet.createDrawingPatriarch();
ClientAnchor anchor = drawing.createAnchor(0, 0, 0, 0, 0, 5, 8, 20);

XSSFChart chart = drawing.createChart(anchor);

CTChart ctChart = ((XSSFChart)chart).getCTChart();
CTPlotArea ctPlotArea = ctChart.getPlotArea();
CTBarChart ctBarChart = ctPlotArea.addNewBarChart();
CTBoolean ctBoolean = ctBarChart.addNewVaryColors();
ctBoolean.setVal(true);
ctBarChart.addNewBarDir().setVal(STBarDir.COL);

for (int r = 2; r < 6; r++) {
CTBarSer ctBarSer = ctBarChart.addNewSer();
CTSerTx ctSerTx = ctBarSer.addNewTx();
CTStrRef ctStrRef = ctSerTx.addNewStrRef();
ctStrRef.setF("Sheet1!$A$" + r);
ctBarSer.addNewIdx().setVal(r-2);
CTAxDataSource cttAxDataSource = ctBarSer.addNewCat();
ctStrRef = cttAxDataSource.addNewStrRef();
ctStrRef.setF("Sheet1!$B$1:$D$1");
CTNumDataSource ctNumDataSource = ctBarSer.addNewVal();
CTNumRef ctNumRef = ctNumDataSource.addNewNumRef();
ctNumRef.setF("Sheet1!$B$" + r + ":$D$" + r);

//at least the border lines in Libreoffice Calc ;-)
ctBarSer.addNewSpPr().addNewLn().addNewSolidFill().addNewSrgbClr().setVal(new byte[] {0,0,0});

}

//telling the BarChart that it has axes and giving them Ids
ctBarChart.addNewAxId().setVal(123456);
ctBarChart.addNewAxId().setVal(123457);

//cat axis
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
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.addNewTickLblPos().setVal(STTickLblPos.NEXT_TO);

//legend
CTLegend ctLegend = ctChart.addNewLegend();
ctLegend.addNewLegendPos().setVal(STLegendPos.B);
ctLegend.addNewOverlay().setVal(false);

System.out.println(ctChart);

FileOutputStream fileOut = new FileOutputStream("BarChart.xlsx");
wb.write(fileOut);
fileOut.close();
}
}

关于java - 使用 Apache POI 在 Excel 中创建条形图,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/38913412/

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