JfreeChart画饼图，折线图，柱状图_jfreechart生成一张图包括2柱状图和1条折线图绘制-优快云博客

本文链接：https://blog.youkuaiyun.com/zhaojianjun111/article/details/2268079

本文详细介绍如何使用Java绘制三种常见图表：饼图、折线图和柱状图。通过具体实例展示了每种图表的数据准备、图表对象创建及自定义设置等步骤。

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1:饼图：

package test;

import java.awt.Font;

import javax.swing.JPanel;

import org.jfree.chart.ChartFactory;

import org.jfree.chart.ChartPanel;

import org.jfree.chart.JFreeChart;

import org.jfree.chart.plot.PiePlot;

import org.jfree.data.general.DefaultPieDataset;

import org.jfree.data.general.PieDataset;

import org.jfree.ui.ApplicationFrame;

import org.jfree.ui.RefineryUtilities;

public class PieCharts extends ApplicationFrame{

public PieCharts(String s){

super(s);

setContentPane(createDemoPanel());

}

// 生成显示图表的面板

public static JPanel createDemoPanel(){

JFreeChart jfreechart = createChart(createDataset());

return new ChartPanel(jfreechart);

}

// 生成饼图数据集对象

public static PieDataset createDataset(){

DefaultPieDataset defaultpiedataset = new DefaultPieDataset();

defaultpiedataset.setValue("管理人员",10.02D);

defaultpiedataset.setValue("市场人员",20.23D);

defaultpiedataset.setValue("开发人员",60.02D);

defaultpiedataset.setValue("OEM人员",10.02D);

defaultpiedataset.setValue("其他人员",5.11D);

return defaultpiedataset;

}

//生成图表主对象JFreeChart

public static JFreeChart createChart(PieDataset piedataset){

//定义图表对象

JFreeChart jfreechart = ChartFactory.createPieChart("CityInfoPort公司组织架构图",piedataset,true,true,false);

//获得图表显示对象

PiePlot pieplot = (PiePlot)jfreechart.getPlot();

//设置图表标签字体

pieplot.setLabelFont(new Font("SansSerif",Font.BOLD,12));

pieplot.setNoDataMessage("No data available");

pieplot.setCircular(true);

pieplot.setLabelGap(0.01D);//间距

return jfreechart;

}

public static void main(String[] args){

PieCharts fjc = new PieCharts("CityInfoPort公司组织架构图");

fjc.pack();

RefineryUtilities.centerFrameOnScreen(fjc);

fjc.setVisible(true);

}

2：折线图

package test;

import javax.swing.JPanel;

import org.jfree.chart.ChartFactory;

import org.jfree.chart.ChartPanel;

import org.jfree.chart.JFreeChart;

import org.jfree.chart.axis.NumberAxis;

import org.jfree.chart.plot.CategoryPlot;

import org.jfree.chart.plot.PlotOrientation;

import org.jfree.data.category.DefaultCategoryDataset;

import org.jfree.ui.ApplicationFrame;

import org.jfree.ui.RefineryUtilities;

public class LineCharts extends ApplicationFrame {

public LineCharts(String s) {

super(s);

setContentPane(createDemoLine());

}

public static void main(String[] args) {

LineCharts fjc = new LineCharts("折线图");

fjc.pack();

RefineryUtilities.centerFrameOnScreen(fjc);

fjc.setVisible(true);

}

// 生成显示图表的面板

public static JPanel createDemoLine() {

JFreeChart jfreechart = createChart(createDataset());

return new ChartPanel(jfreechart);

}

// 生成图表主对象JFreeChart

public static JFreeChart createChart(DefaultCategoryDataset linedataset) {

//定义图表对象

JFreeChart chart = ChartFactory.createLineChart("折线图", // chart title

"时间", // domain axis label

"销售额(百万)", // range axis label

linedataset, // data

PlotOrientation.VERTICAL, // orientation

true, // include legend

true, // tooltips

false // urls

);

CategoryPlot plot = chart.getCategoryPlot();

// customise the range axis...

NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();

rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());

rangeAxis.setAutoRangeIncludesZero(true);

rangeAxis.setUpperMargin(0.20);

rangeAxis.setLabelAngle(Math.PI / 2.0);

return chart;

}

//生成数据

public static DefaultCategoryDataset createDataset() {

DefaultCategoryDataset linedataset = new DefaultCategoryDataset();

// 各曲线名称

String series1 = "冰箱";

String series2 = "彩电";

String series3 = "洗衣机";

// 横轴名称(列名称)

String type1 = "1月";

String type2 = "2月";

String type3 = "3月";

linedataset.addValue(0.0, series1, type1);

linedataset.addValue(4.2, series1, type2);

linedataset.addValue(3.9, series1, type3);

linedataset.addValue(1.0, series2, type1);

linedataset.addValue(5.2, series2, type2);

linedataset.addValue(7.9, series2, type3);

linedataset.addValue(2.0, series3, type1);

linedataset.addValue(9.2, series3, type2);

linedataset.addValue(8.9, series3, type3);

return linedataset;

}

3：柱状图：

package test;

import java.awt.Color;

import javax.swing.JPanel;

import org.jfree.chart.ChartFactory;

import org.jfree.chart.ChartPanel;

import org.jfree.chart.JFreeChart;

import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;

import org.jfree.chart.plot.CategoryPlot;

import org.jfree.chart.plot.PlotOrientation;

import org.jfree.chart.renderer.category.BarRenderer3D;

import org.jfree.data.category.CategoryDataset;

import org.jfree.data.general.DatasetUtilities;

import org.jfree.ui.ApplicationFrame;

import org.jfree.ui.RefineryUtilities;

public class BarCharts extends ApplicationFrame {

public BarCharts(String s) {

super(s);

setContentPane(createDemoBar());

}

// 生成显示图表的面板

public static JPanel createDemoBar() {

JFreeChart jfreechart = createChart(createDataset());

return new ChartPanel(jfreechart);

}

// 生成图表主对象JFreeChart

public static JFreeChart createChart(CategoryDataset dataset) {

JFreeChart chart = ChartFactory.createBarChart3D("水果销量统计图", //建立3D柱状图

"水果",//横轴名称

"销量",//纵轴名称

dataset,//数据集

PlotOrientation.VERTICAL,//纵向显示

true,//显示每个颜色柱子的柱名

false, false);

CategoryPlot plot = chart.getCategoryPlot();//设置图的高级属性

BarRenderer3D renderer = new BarRenderer3D();//3D属性修改

renderer.setBaseOutlinePaint(Color.BLACK);//设置边框颜色为black

renderer.setWallPaint(Color.gray); //设置wall的颜色为gray

renderer

.setItemLabelGenerator(new StandardCategoryItemLabelGenerator());//设置柱顶数据,API中居然没有StandardCategoryItemLabelGenerator这个类

//renderer.setItemLabelFont(new Font("黑体",Font.PLAIN,12));//设置柱顶数据字体

renderer.setItemLabelsVisible(true);//打开ItemLabel开关

plot.setRenderer(renderer);//将修改后的属性值保存到图中

plot.setForegroundAlpha(0.6f);//柱的透明度

return chart;

}

// 生成数据

public static CategoryDataset createDataset() {

double[][] data = new double[][] { { 672, 766, 223, 540, 126 },

{ 325, 521, 210, 340, 106 }, { 332, 256, 523, 240, 526 } };// 设置数据

String[] rowKeys = { "苹果", "梨子", "葡萄" };// 行标志

String[] columnKeys = { "北京", "上海", "广州", "成都", "深圳" };// 列标志

CategoryDataset linedataset = DatasetUtilities.createCategoryDataset(

rowKeys, columnKeys, data); // 建立数据集

return linedataset;

}

public static void main(String[] args) {

BarCharts fjc = new BarCharts("柱状图");

fjc.pack();

RefineryUtilities.centerFrameOnScreen(fjc);

fjc.setVisible(true);

}