jfreeChar饼状图

import java.awt.Color;
import java.awt.Font;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.general.DefaultPieDataset;

public class CreatePieChart {
	private static JFreeChart chart;
	private static DefaultPieDataset dataset;
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		//步骤1：创建XYDataset对象（准备数据）      
		createDataset();
    	//步骤2：根据Dataset 生成JFreeChart对象，以及做相应的设置      
    	createChart();      
    	//步骤3：将JFreeChart对象输出到文件，Servlet输出流等      
    	saveAsFile(chart, "D:\\PieXY.png", 600, 400);      
      
        //显示  
        ChartFrame frame = new ChartFrame("BarChart Tesing!", chart);
        frame.pack();
        frame.setVisible(true);
	}
	/**
	 * Create DataSet
	 */
	private static void createDataset() {
		dataset = new DefaultPieDataset();
		double[][] data = new double[][] {{1, 2, 3, 4, 5},{7, 9, 14, 21, 31}};
		String[] rowKeys = {"合格","不合格"};
		String[] columnKeys = {"第一种","第二种","第三种","第四种","第五种"};
		Double d= 0.0;
		for (int j = 0; j < columnKeys.length; j++) {
		  for (int i = 0; i < rowKeys.length; i++) {
				d = d + data[i][j];
			}
			dataset.setValue(columnKeys[j], d);
		}
	}
	/**
	 * 饼图
	 */
	public static void createChart() {
		chart = ChartFactory.createPieChart("饼状图", dataset, true, true, true);	
		PiePlot plot = (PiePlot)chart.getPlot();
		plot.setBackgroundPaint(new Color(238, 244, 255));//设置图表的颜色	
		chart.setBackgroundPaint(Color.white);
		setChartFont();
	}
	/**
	 * Save chart to File    
	 * @param chart
	 * @param outputPath
	 * @param weight
	 * @param height
	 */
    public static void saveAsFile(JFreeChart chart, String outputPath,      
    								int weight, int height) {      
    	
    	FileOutputStream out = null;      
    	try {      
    		File outFile = new File(outputPath);      
    		if (!outFile.getParentFile().exists()) {      
    			outFile.getParentFile().mkdirs();      
    		}      
    		out = new FileOutputStream(outputPath);      
    		//保存为PNG      
    		ChartUtilities.writeChartAsPNG(out, chart, weight, height);      
    		// 保存为JPEG      
    		// ChartUtilities.writeChartAsJPEG(out, chart, weight, height);      
    		out.flush();      
    	} catch (FileNotFoundException e) {      
    		e.printStackTrace();      
    	} catch (IOException e) {      
    		e.printStackTrace();      
    	} finally {      
    		if (out != null) {      
    			try {      
    				out.close();      
    			} catch (IOException e) {      
    			// do nothing      
    			}      
    		}      
    	}      
    }  
	/**
	 * 图标乱码解决
	 */
	private static void setChartFont() {	
		Font title = new Font("楷体", Font.PLAIN, 15);
		Font f = new Font("楷体", Font.PLAIN, 12);
		//title(标题),
		TextTitle textTitle = chart.getTitle();   
		textTitle.setFont(title); 
		
		//获得图表区域对象 
		PiePlot plot = (PiePlot)chart.getPlot();
		plot.setLabelFont(f);
		
		//legend(图释)
		chart.getLegend().setItemFont(f);
	}
}

运行得到的图片：