使用JFreeChart创建3D柱状图
package com.cs.jfreechart;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.NumberAxis;import org.jfree.chart.plot.CategoryPlot;import org.jfree.chart.plot.PlotOrientation;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 Bar3DChartDemo {/** * @param args * @throws IOException */public static void main(String[] args) throws IOException {//生成柱状图JFreeChart chart = ChartFactory.createBarChart3D ("图书销售统计表", //图表标题"图书", //目录轴的显示标签"销量", //数值轴的显示标签getDateSet(), //数据//PlotOrientation.HORIZONTAL, //图表方向水平PlotOrientation.VERTICAL, //图表方向垂直true, //是否显示图例false, //是否显示工具提示false //是否生成URL);//设置标题及标题字体chart.setTitle(new TextTitle("图书销售统计图",new Font("黑体",Font.ITALIC,22)));//建一个图例LegendTitle legendTitle = chart.getLegend(0);//设置图例字体legendTitle.setItemFont(new Font("宋体",Font.BOLD,14));//获取柱状图plot对象CategoryPlot plot = (CategoryPlot) chart.getPlot();//设置柱型的颜色plot.getRenderer().setSeriesPaint(0, Color.BLUE);plot.getRenderer().setSeriesPaint(1, Color.GREEN);plot.getRenderer().setSeriesPaint(2, Color.ORANGE);//取得横轴CategoryAxis categoryAxis = plot.getDomainAxis();//设置横轴的字体categoryAxis.setLabelFont(new Font("宋体",Font.BOLD,22));//设置分类标签以45度倾斜//categoryAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);//设置分类标签字体categoryAxis.setTickLabelFont(new Font("宋体",Font.BOLD,22));//取得纵轴NumberAxis numberAxis = (NumberAxis) plot.getRangeAxis();//设置纵轴的字体numberAxis.setLabelFont(new Font("宋体",Font.BOLD,22));//设置背景透明度（0~1）plot.setBackgroundAlpha(0.9f);//设置前景色透明度（0~1）plot.setForegroundAlpha(0.5f);//输出文件FileOutputStream fos = new FileOutputStream("book.jpg");//用ChartUtilities工具输出ChartUtilities.writeChartAsJPEG(fos, chart, 800, 600);fos.close();}private static CategoryDataset getDateSet() {//提供生成柱状图的数据DefaultCategoryDataset dataset = new DefaultCategoryDataset();//dataset.addValue(47,"","JAVA教程");//dataset.addValue(23,"","c++教程");//dataset.addValue(20,"","C#教程");//dataset.addValue(10,"","VC++教程");//生成复杂带图例的柱状图dataset.addValue(47,"北京","JAVA教程");dataset.addValue(23,"北京","c++教程");dataset.addValue(20,"北京","C#教程");dataset.addValue(10,"北京","VC++教程");dataset.addValue(40,"天津","JAVA教程");dataset.addValue(20,"天津","c++教程");dataset.addValue(35,"天津","C#教程");dataset.addValue(5,"天津","VC++教程");dataset.addValue(30,"上海","JAVA教程");dataset.addValue(28,"上海","c++教程");dataset.addValue(22,"上海","C#教程");dataset.addValue(20,"上海","VC++教程");return dataset;}}