JFreeChart生成柱状图、饼状图、折线图详解

柱状图
 package util;
 import java.awt.Color;
 import java.awt.Font;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import org.jfree.chart.ChartFactory;
 import org.jfree.chart.ChartUtilities;
 import org.jfree.chart.JFreeChart;
 import org.jfree.chart.axis.CategoryAxis;
 import org.jfree.chart.axis.CategoryLabelPositions;
 import org.jfree.chart.axis.NumberAxis;
 import org.jfree.chart.axis.ValueAxis;
 import org.jfree.chart.labels.StandardCategoryItemLabelGenerator;
 import org.jfree.chart.plot.CategoryPlot;
 import org.jfree.chart.plot.PlotOrientation;
 import org.jfree.chart.renderer.category.BarRenderer;
 import org.jfree.chart.title.LegendTitle;
 import org.jfree.chart.title.TextTitle;
 import org.jfree.data.category.CategoryDataset;
 import org.jfree.data.category.DefaultCategoryDataset;
 public class BarChart3DDemo 
 { 
 public static void main(String[] args) throws IOException 
 { 
   
 JFreeChart chart = ChartFactory.createBarChart3D( 
 "图书销量统计图", // 图表标题 
 "图书", // 目录轴的显示标签 
 "销量", // 数值轴的显示标签 
 getDataSet(), // 数据集 
 //PlotOrientation.HORIZONTAL , // 图表方向：水平 
 PlotOrientation.VERTICAL , // 图表方向：垂直 
 true, // 是否显示图例(对于简单的柱状图必须是false) 
 false, // 是否生成工具 
 false // 是否生成URL链接 
 ); 
 //重新设置图标标题，改变字体 
 chart.setTitle(new TextTitle("图书销量统计图", new Font("黑体", Font.ITALIC , 22))); 
 //取得统计图标的第一个图例 
 LegendTitle legend = chart.getLegend(0); 
 //修改图例的字体 
 legend.setItemFont(new Font("宋体", Font.BOLD, 14)); 
 CategoryPlot plot = (CategoryPlot)chart.getPlot(); //设置柱状图到图片上端的距离
 ValueAxis rangeAxis = plot.getRangeAxis();
 rangeAxis.setUpperMargin(0.1);
 //取得横轴 
 CategoryAxis categoryAxis = plot.getDomainAxis(); 
 //设置横轴显示标签的字体 
 categoryAxis.setLabelFont(new Font("宋体" , Font.BOLD , 22)); 
 //分类标签以45度角倾斜 
 categoryAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45); 
 categoryAxis.setTickLabelFont(new Font("宋体" , Font.BOLD , 18)); 
 //取得纵轴 
 NumberAxis numberAxis = (NumberAxis)plot.getRangeAxis(); 
 //设置纵轴显示标签的字体 
 numberAxis.setLabelFont(new Font("宋体" , Font.BOLD , 22)); //在柱体的上面显示数据
 BarRenderer custombarrenderer3d = new BarRenderer();
 custombarrenderer3d.setBaseItemLabelPaint(Color.BLACK);//数据字体的颜色
 custombarrenderer3d
    .setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
 custombarrenderer3d.setBaseItemLabelsVisible(true);
 plot.setRenderer(custombarrenderer3d); FileOutputStream fos = null; 
 fos = new FileOutputStream("d:book1.jpg"); 
 //将统计图标输出成JPG文件 
 ChartUtilities.writeChartAsJPEG( 
 fos, //输出到哪个输出流 
 1, //JPEG图片的质量，0~1之间 
 chart, //统计图标对象 
 800, //宽 
 600,//宽 
 null //ChartRenderingInfo 信息 
 ); 
 fos.close(); 
 } 
 //返回一个CategoryDataset实例 
 private static CategoryDataset getDataSet() 
 { 
 DefaultCategoryDataset dataset = new DefaultCategoryDataset(); 
 dataset.addValue(45000 , "北京" , "Spring2.0宝典"); 
 dataset.addValue(38000 , "北京" , "轻量级J2EE企业实战"); 
 dataset.addValue(24000 , "北京" , "基于J2EE的Ajax宝典"); 
 dataset.addValue(32000 , "北京" , "JavaScript权威指南"); 
 dataset.addValue(21000 , "北京" , "Ajax In Action"); 
 dataset.addValue(37000 , "上海" , "Spring2.0宝典"); 
 dataset.addValue(36000 , "上海" , "轻量级J2EE企业实战"); 
 dataset.addValue(34000 , "上海" , "基于J2EE的Ajax宝典"); 
 dataset.addValue(42000 , "上海" , "JavaScript权威指南"); 
 dataset.addValue(12000 , "上海" , "Ajax In Action"); 
 dataset.addValue(42000 , "广州" , "Spring2.0宝典"); 
 dataset.addValue(40000 , "广州" , "轻量级J2EE企业实战"); 
 dataset.addValue(34000 , "广州" , "基于J2EE的Ajax宝典"); 
 dataset.addValue(18000 , "广州" , "JavaScript权威指南"); 
 dataset.addValue(26000 , "广州" , "Ajax In Action"); 
 return dataset; 
 } 
 }饼状图
package test;
 import java.awt.Color;
 import java.awt.Font;
 import java.io.File;
 import java.io.IOException;
 import java.text.DecimalFormat;
 import java.text.NumberFormat;
 import org.jfree.chart.ChartFactory;
 import org.jfree.chart.ChartUtilities;
 import org.jfree.chart.JFreeChart;
 import org.jfree.chart.labels.StandardPieSectionLabelGenerator;
 import org.jfree.chart.plot.PiePlot3D;
 import org.jfree.chart.title.LegendTitle;
 import org.jfree.chart.title.TextTitle;
 import org.jfree.data.general.DefaultPieDataset;
 public class testPieChart {
 public static void main(String []args){
    DefaultPieDataset dataset = new DefaultPieDataset();
    dataset.setValue(" 市场前期", new Double(10)); 
    dataset.setValue(" 立项", new Double(15));    
    dataset.setValue(" 计划", new Double(10));    
    dataset.setValue(" 需求与设计", new Double(10));    
    dataset.setValue(" 执行控制", new Double(35));    
    dataset.setValue(" 收尾", new Double(10));    
    dataset.setValue(" 运维",new Double(10));    
    JFreeChart chart = ChartFactory.createPieChart3D("项目状态分布", dataset,
        true, true, false);
      PiePlot3D plot = (PiePlot3D) chart.getPlot();
      // 图片中显示百分比:默认方式
      // plot.setLabelGenerator(new
      // StandardPieSectionLabelGenerator(StandardPieToolTipGenerator.DEFAULT_TOOLTIP_FORMAT));
      // 图片中显示百分比:自定义方式，{0} 表示选项， {1} 表示数值， {2} 表示所占比例 ,小数点后两位
      plot.setLabelGenerator(new StandardPieSectionLabelGenerator(
        "{0}({2})", NumberFormat.getNumberInstance(),
        new DecimalFormat("0.00%")));
      // 图例显示百分比:自定义方式， {0} 表示选项， {1} 表示数值， {2} 表示所占比例
      plot.setLegendLabelGenerator(new StandardPieSectionLabelGenerator(
        "{0}={1}({2})"));
      // 设置背景色为白色
      chart.setBackgroundPaint(Color.white);
      // 指定图片的透明度(0.0-1.0)
      plot.setForegroundAlpha(1.0f);
      // 指定显示的饼图上圆形(false)还椭圆形(true)
      plot.setCircular(true);
      // 设置图标题的字体
      Font font = new Font(" 黑体", Font.CENTER_BASELINE, 20);
      TextTitle title = new TextTitle("项目状态分布");
      title.setFont(font);
      chart.setTitle(title);
      plot.setLabelFont(new Font("SimSun", 0, 12));//
      LegendTitle legend = chart.getLegend(0);
      legend.setItemFont(new Font("宋体", Font.BOLD, 14));   try {
       ChartUtilities.saveChartAsJPEG( 
         new File("d:\\PieTest9.jpg"), //输出到哪个输出流 
         1, //JPEG图片的质量，0~1之间 
         chart, //统计图标对象 
         640, //宽 
         300,//宽 
         null //ChartRenderingInfo 信息 
         );
      } catch (IOException e) {
       // TODO Auto-generated catch block
       e.printStackTrace();
      } 
 }}
折线图
package chart;
 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.axis.CategoryAxis;
 import org.jfree.chart.axis.NumberAxis;
 import org.jfree.chart.plot.CategoryPlot;
 import org.jfree.chart.plot.PlotOrientation;
 import org.jfree.chart.title.LegendTitle;
 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();  
    // 设置图示字体 
    chart.getTitle().setFont(new Font("宋体", Font.BOLD, 22));   
    //设置横轴的字体
    CategoryAxis categoryAxis = plot.getDomainAxis();
    categoryAxis.setLabelFont(new Font("宋体", Font.BOLD, 22));//x轴标题字体 
    categoryAxis.setTickLabelFont(new Font("宋体", Font.BOLD, 18));//x轴刻度字体   //以下两行 设置图例的字体
    LegendTitle legend = chart.getLegend(0);
    legend.setItemFont(new Font("宋体", Font.BOLD, 14));
    //设置竖轴的字体
    NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
    rangeAxis.setLabelFont(new Font("宋体" , Font.BOLD , 22)); //设置数轴的字体
    rangeAxis.setTickLabelFont(new Font("宋体" , Font.BOLD , 22));
   
    rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());//去掉竖轴字体显示不全
    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;
 }}