JFreeChart 图表生成实例(饼图、柱状图、折线图、时序图)详解编程语言

import java.awt.BasicStroke; 
import java.awt.Color; 
import java.io.FileOutputStream; 
import java.io.IOException; 
import java.text.DateFormat; 
import java.text.SimpleDateFormat; 
import javax.servlet.ServletException; 
import javax.servlet.ServletRequest; 
import javax.servlet.ServletResponse; 
import javax.servlet.http.HttpServlet; 
import org.jfree.data.category.CategoryDataset; 
import org.jfree.data.category.DefaultCategoryDataset; 
import org.jfree.data.general.DefaultPieDataset; 
import org.jfree.data.time.Day; 
import org.jfree.data.time.TimeSeries; 
import org.jfree.data.time.TimeSeriesCollection; 
import org.jfree.data.xy.XYDataset; 
import org.jfree.chart.*; 
import org.jfree.chart.axis.CategoryAxis; 
import org.jfree.chart.axis.DateAxis; 
import org.jfree.chart.axis.DateTickUnit; 
import org.jfree.chart.axis.DateTickUnitType; 
import org.jfree.chart.axis.ValueAxis; 
import org.jfree.chart.plot.CategoryPlot; 
import org.jfree.chart.plot.PiePlot; 
import org.jfree.chart.plot.PlotOrientation; 
import org.jfree.chart.plot.XYPlot; 
import org.jfree.chart.renderer.category.LineAndShapeRenderer; 
import org.jfree.chart.servlet.ServletUtilities; 
import org.jfree.chart.title.TextTitle; 
import com.lowagie.text.Font; 
import demo.BarChart3DDemo1; 
/** 
* Servlet implementation class ChartDemoServlet 
*/ 
public class ChartDemoServlet extends HttpServlet { 
private static final long serialVersionUID = 1L; 
public ChartDemoServlet() { 
super(); 
// TODO Auto-generated constructor stub 
} 
public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException{ 
response.setContentType("image/jpeg"); 
DefaultPieDataset data = getDataSet(); 
CategoryDataset dataset = getDataSet2(); 
DefaultCategoryDataset linedataset = createDataset(); 
//JFreeChart chart = ChartFactory.createPieChart3D("水果产量图", data, true, false, false); 
/** 
JFreeChart chart = ChartFactory.createBarChart3D( 
"水果产量图", // 图表标题 
"水果", // 目录轴的显示标签 
"产量", // 数值轴的显示标签 
dataset, // 数据集 
PlotOrientation.VERTICAL, // 图表方向：水平、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 
); 
**/ 
JFreeChart chart = ChartFactory.createLineChart( 
"折线图", // 图表标题 
"时间", // 横轴显示标签 
"销售额(百万)", // 纵轴显示标签 
linedataset, // 数据集 
PlotOrientation.VERTICAL, // 图表方向：水平、垂直 
true, // 是否显示图例标识(对于简单的柱状图必须是 false) 
true, // 是否生成工具 
false // 是否生成 URL 链接 
); 
/* 
JFreeChart chart=ChartFactory.createTimeSeriesChart( 
"编程词典全国销量统计" 
, "销售月份" 
, "销量（份）" 
, createtimedata() 
, false 
, false 
, false 
); 
*/ 
/* 
* jfreechart1.0.13生成的图片中，中文都以方框形式显示,中文乱码解决如下（包括：饼图、柱状图、时序图、折线图）。 
*/ 
/***设置饼图相关属性***/ 
/* 
PiePlot pieplot = (PiePlot) chart.getPlot();//获取饼图区域对象。 
pieplot.setLabelFont(new java.awt.Font("宋体",0,12)); 
pieplot.setNoDataMessage("无数据显示"); //没有数据的时候显示的内容 
pieplot.setCircular(false); 
pieplot.setLabelGap(0.02D); 
TextTitle txtTitle = null; 
txtTitle = chart.getTitle(); 
java.awt.Font font = new java.awt.Font("宋体", Font.BOLD, 16); 
txtTitle.setFont(font);//解决标题中文乱码 
chart.getLegend().setItemFont(font); 
chart.setBackgroundPaint(new Color(232,232,232));//设定背景 
pieplot.setBackgroundPaint(Color.white); //设定图表数据显示部分背景色 
*/ 
/***设置柱状图、折线图相关属性***/ 
CategoryPlot catplot=chart.getCategoryPlot();  //获取柱状图、折线图区域对象。 
CategoryAxis domainAxis=catplot.getDomainAxis(); 
catplot.setNoDataMessage("无数据显示");//没有数据的时候显示的内容 
//列表标题 
TextTitle txtTitle = null; 
txtTitle = chart.getTitle(); 
txtTitle.setFont(new java.awt.Font("黑体",Font.BOLD,14)); 
//水平底部列表 
domainAxis.setLabelFont(new java.awt.Font("黑体",Font.BOLD,14)); 
//水平底部标题 
domainAxis.setTickLabelFont(new java.awt.Font("宋体",Font.BOLD,12)); 
//垂直标题 
ValueAxis rangeAxis=catplot.getRangeAxis();//获取柱状 
rangeAxis.setLabelFont(new java.awt.Font("黑体",Font.BOLD,15)); 
chart.getLegend().setItemFont(new java.awt.Font("黑体", Font.BOLD, 15)); 
//获得renderer 
LineAndShapeRenderer lineAndShapeRenderer =(LineAndShapeRenderer)catplot.getRenderer(); 
lineAndShapeRenderer.setShapesVisible(true); //series 点（即数据点）可见 
/* 
lineAndShapeRenderer.setSeriesStroke(0, new BasicStroke(2.0F, 1, 1, 1.0F, new float[] { 
10F, 6F 
}, 0.0F)); //这里是虚线，默认是直线 
*/ 
/***设置时序图相关属性***/ 
/** 
XYPlot xyplot = (XYPlot) chart.getPlot();//获取时序图区域对象。 
//列表标题 
TextTitle txtTitle = null; 
txtTitle = chart.getTitle(); 
txtTitle.setFont(new java.awt.Font("黑体",Font.BOLD,15)); 
//纵轴字体 
xyplot.getRangeAxis().setLabelFont(new java.awt.Font("宋体", Font.BOLD, 12)); 
//横轴框里的标题字体:显示图例 
//chart.getLegend().setItemFont(new java.awt.Font("宋体", Font.ITALIC, 12)); 
//横轴列表字体 
xyplot.getDomainAxis().setTickLabelFont(new java.awt.Font("新宋体", 1, 12)); 
//横轴小标题字体 
xyplot.getDomainAxis().setLabelFont(new java.awt.Font("新宋体", 1, 12)); 
chart.setBackgroundPaint(new Color(252,175,134)); //设置背景色 
xyplot.setDomainGridlinesVisible(false);  //设置网格不显示 
//获取时间轴对象 
DateAxis dateAxis = (DateAxis) xyplot.getDomainAxis(); 
//dateAxis.setLabelFont(new java.awt.Font("黑体", Font.ITALIC , 18));   //设置时间轴字体 
dateAxis.setLowerMargin(0.0);//设置时间轴上显示的最小值 
DateFormat format = new SimpleDateFormat("MM月份");   //创建日期格式对象 
//创建DateTickUnit对象 
DateTickUnit dtu = new DateTickUnit(DateTickUnitType.DAY,29,format); 
dateAxis.setTickUnit(dtu);//设置日期轴的日期标签 
**/ 
//chart.getTitle().setFont(new java.awt.Font("宋体", Font.BOLD, 15)); 
//chart.getLegend().setItemFont(new java.awt.Font("黑体", Font.BOLD, 15)); 
//CategoryAxis domainAxis = plot.getDomainAxis();   
/*------设置X轴坐标上的文字-----------*/ 
//domainAxis.setTickLabelFont(new java.awt.Font("黑体", Font.PLAIN, 11));   
/*------设置X轴的标题文字------------*/ 
//domainAxis.setLabelFont(new java.awt.Font("宋体", Font.PLAIN, 12));   
//NumberAxis numberaxis = (NumberAxis) plot.getRangeAxis();   
/*------设置Y轴坐标上的文字-----------*/ 
//numberaxis.setTickLabelFont(new java.awt.Font("黑体", Font.PLAIN, 12));   
/*------设置Y轴的标题文字------------*/ 
//numberaxis.setLabelFont(new java.awt.Font("黑体", Font.PLAIN, 12)); 
FileOutputStream fos_jpg=null; 
try{ 
fos_jpg=new FileOutputStream("D://ok_bing.jpg"); 
/* 
* 第二个参数如果为100，会报异常： 
* java.lang.IllegalArgumentException: The 'quality' must be in the range 0.0f to 1.0f 
* 限制quality必须小于等于1,把100改成 0.1f。 
*/ 
ChartUtilities.writeChartAsJPEG(fos_jpg, 0.99f, chart, 600, 300, null); 
}catch(Exception e){ 
System.out.println("[e]"+e); 
}finally{ 
try{ 
fos_jpg.close(); 
}catch(Exception e){ 
} 
}  
} 
/** 
* 获取一个演示用的简单数据集对象 
* @return 
*/ 
//生成饼图数据 
private static DefaultPieDataset getDataSet() { 
DefaultPieDataset dataset = new DefaultPieDataset(); 
dataset.setValue("苹果",100); 
dataset.setValue("梨子",200); 
dataset.setValue("葡萄",300); 
dataset.setValue("香蕉",400); 
dataset.setValue("荔枝",500); 
return dataset; 
} 
//生成柱状图数据 
private static CategoryDataset getDataSet2() { 
DefaultCategoryDataset dataset = new DefaultCategoryDataset(); 
dataset.addValue(100, "北京", "苹果"); 
dataset.addValue(100, "上海", "苹果"); 
dataset.addValue(100, "广州", "苹果"); 
dataset.addValue(200, "北京", "梨子"); 
dataset.addValue(200, "上海", "梨子"); 
dataset.addValue(200, "广州", "梨子"); 
dataset.addValue(300, "北京", "葡萄"); 
dataset.addValue(300, "上海", "葡萄"); 
dataset.addValue(300, "广州", "葡萄"); 
dataset.addValue(400, "北京", "香蕉"); 
dataset.addValue(400, "上海", "香蕉"); 
dataset.addValue(400, "广州", "香蕉"); 
dataset.addValue(500, "北京", "荔枝"); 
dataset.addValue(500, "上海", "荔枝"); 
dataset.addValue(500, "广州", "荔枝"); 
return dataset; 
} 
//生成折线图数据 
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"; 
String type4 = "4月"; 
String type5 = "5月"; 
linedataset.addValue(0.0, series1, type1); 
linedataset.addValue(4.2, series1, type2); 
linedataset.addValue(3.9, series1, type3); 
linedataset.addValue(3.2, series1, type4); 
linedataset.addValue(3.0, series1, type5); 
linedataset.addValue(1.0, series2, type1); 
linedataset.addValue(5.2, series2, type2); 
linedataset.addValue(7.9, series2, type3); 
linedataset.addValue(8.9, series2, type4); 
linedataset.addValue(9.2, series2, type5); 
linedataset.addValue(2.0, series3, type1); 
linedataset.addValue(9.2, series3, type2); 
linedataset.addValue(8.9, series3, type3); 
linedataset.addValue(9.9, series3, type4); 
linedataset.addValue(10.9, series3, type5); 
return linedataset; 
} 
//生成时序图数据 
public static XYDataset createtimedata() { 
//实例化TimeSeries对象 
TimeSeries timeseries = new TimeSeries("Data"); 
Day day = new Day(1, 1, 2008);  //实例化Day 
double d = 3000D;//添加一年365天的数据 
for (int i = 0; i < 365; i++) { 
d = d + (Math.random() - 0.5) * 10; //创建随机数据 
timeseries.add(day, d); //向数据集合中添加数据 
day = (Day) day.next(); 
} 
//创建TimeSeriesCollection集合对象 
TimeSeriesCollection timeSeriesCollection =new TimeSeriesCollection(timeseries); 
//返回数据集合对象 
return timeSeriesCollection; 
} 
}