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;
}

}

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