JFreeChart生成混合图（柱状图折线图）并插入excel中

效果如下



java code

package com.springapp.mvc;

import org.apache.poi.util.IOUtils;
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;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.NumberTickUnit;
import org.jfree.chart.labels.ItemLabelAnchor;
import org.jfree.chart.labels.ItemLabelPosition;
import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.DatasetRenderingOrder;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.chart.renderer.category.StackedBarRenderer;
import org.jfree.chart.renderer.category.StandardBarPainter;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DatasetUtilities;
import org.jfree.ui.TextAnchor;

import java.awt.*;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.NumberFormat;
import java.util.Random;

/**
* Created by acer on 2017/9/3.
*/
public class MyJFreeChart {
public static final String[] ITMES = {"JAN","Feb","Mar"};

//Stacked Bar Chart data
private static CategoryDataset categoryDataset(String[] items){
String[] series = new String[]{"Green","Amber","Red"};

double[] greenItems = new double[items.length];
double[] amberItems = new double[items.length];
double[] redItems = new double[items.length];

Random rd = null;
for (int i = 0; i < items.length; i++) {
rd = new Random();
greenItems[i] = 700 + rd.nextInt(100);
amberItems[i] = 150 + rd.nextInt(100);
redItems[i] = 10 + rd.nextInt(100);
}

double[][] data = new double[][]{greenItems,amberItems,redItems};
return DatasetUtilities.createCategoryDataset(series,ITMES,data);
}
//line Chart data
private static CategoryDataset categoryLineDataset(String[] items){
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
String s = "%Reds";

Random rd = null;
for (int i = 0; i < items.length; i++) {
rd = new Random();
dataset.addValue(rd.nextDouble()/10,s,items[i]);
}

return dataset;
}

private static JFreeChart createChart(CategoryDataset categoryBarDataset,CategoryDataset categoryLineDataset){
JFreeChart chart = ChartFactory.createBarChart("Title","","",categoryBarDataset, PlotOrientation.VERTICAL,true,true,false);
CategoryPlot plot = (CategoryPlot)chart.getPlot();
//set right margin
plot.getDomainAxis().setUpperMargin(0.1);
//set X axis Label lines
plot.getDomainAxis().setMaximumCategoryLabelLines(2);
NumberAxis na = (NumberAxis)plot.getRangeAxis();
//stack bar chart
StackedBarRenderer rederer = new StackedBarRenderer();
plot.setRenderer(0,rederer);
rederer.setBaseItemLabelsVisible(true);
rederer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
rederer.setBaseItemLabelFont(new Font("Calibri",Font.ITALIC,15));
rederer.setMaximumBarWidth(0.07);
rederer.setMinimumBarLength(0.1);
rederer.setBarPainter(new StandardBarPainter());
rederer.setSeriesPaint(0,Color.green);
rederer.setSeriesPaint(1,Color.yellow);
rederer.setSeriesPaint(2,Color.red);

//line chart
LineAndShapeRenderer lineRenderer = new LineAndShapeRenderer();
plot.setRenderer(1,lineRenderer);

//set data display as x.x%
NumberFormat nf = NumberFormat.getPercentInstance();
nf.setMinimumFractionDigits(1);
lineRenderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator("{2}",nf));
lineRenderer.setBaseItemLabelFont(new Font("Calibri",Font.ITALIC,15));
lineRenderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.INSIDE12, TextAnchor.BASELINE_LEFT));
lineRenderer.setBaseItemLabelsVisible(true);
lineRenderer.setBaseShapesVisible(true);
//point style
lineRenderer.setSeriesShape(0,new Rectangle(5,5));
lineRenderer.setBaseShapesVisible(true);
NumberAxis rightYAxis = new NumberAxis("");
//set axis display as x.x%
rightYAxis.setNumberFormatOverride(nf);
rightYAxis.setTickUnit(new NumberTickUnit(0.01));
//point axis, point dataset, mapping axis and dataset
plot.setRangeAxis(1,rightYAxis);
plot.setDataset(1,categoryLineDataset);
plot.mapDatasetToRangeAxis(1,1);
//set render order
plot.setDatasetRenderingOrder(DatasetRenderingOrder.FORWARD);
return chart;
}

//generate jpg and insert into excel
public static void main(String[] args) {
int rowsNum = 5;
JFreeChart chart = createChart(categoryDataset(ITMES),categoryLineDataset(ITMES));
FileOutputStream excelFos = null;
FileInputStream excelFis = null;

ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream(128);
try {
ChartUtilities.writeChartAsJPEG(byteArrayOutputStream,1.0f,chart,1200,900);
excelFis = new FileInputStream("D://testFreeChart.xlsx");
XSSFWorkbook wb = new XSSFWorkbook(excelFis);
XSSFSheet sheet = wb.getSheetAt(0);
XSSFDrawing patriarch = sheet.createDrawingPatriarch();
// begin column,begin row; end column,end row;
//1,0 + rowsNum,15,42+rowsNum; insert from cell(1,0 + rowsNum) to cell(15,42 + rowsNum)
XSSFClientAnchor anchor = new XSSFClientAnchor(0,0,0,0,1,0 + rowsNum,15,42+rowsNum);
patriarch.createPicture(anchor,wb.addPicture(byteArrayOutputStream.toByteArray(),XSSFWorkbook.PICTURE_TYPE_JPEG));
excelFos = new FileOutputStream("D://result.xlsx");
wb.write(excelFos);
} catch (IOException e) {
e.printStackTrace();
}finally {
IOUtils.closeQuietly(byteArrayOutputStream);
IOUtils.closeQuietly(excelFos);
IOUtils.closeQuietly(excelFis);
}
}
}
maven pom 依赖

<dependency>
<groupId>org.jfree</groupId>
<artifactId>jfreechart</artifactId>
<version>1.0.19</version>
</dependency>

<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.15</version>
</dependency>