jfreeChar线状图

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.axis.CategoryAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.category.DefaultCategoryDataset;

public class CreateLineChart {

	private static JFreeChart chart;
	private static DefaultCategoryDataset 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:\\lineXY.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 DefaultCategoryDataset();
		double[][] data = new double[][] {{24, 32, 50, 54, 65},{7, 9, 14, 21, 80}};
		String[] rowKeys = {"合格","不合格"};
		String[] columnKeys = {"第一种","第二种","第三种","第四种","第五种"};
		for (int i = 0; i < rowKeys.length; i++) {
			for (int j = 0; j < columnKeys.length; j++) {
				dataset.setValue(data[i][j], rowKeys[i], columnKeys[j]);
			}
		}
	}
	
	public static void createChart() {
		chart = ChartFactory.createLineChart("线状图", // 图表标题
				"X轴",	// 目录轴的显示标签
				"Y轴",	// 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)
				true, 	// 是否生成工具 
				false);	// 是否生成URL链接 
		CategoryPlot plot = chart.getCategoryPlot();
		plot.setBackgroundPaint(new Color(238, 244, 255));//设置图表的颜色		
		plot.setDomainGridlinePaint(Color.lightGray);//设置垂直网格线的颜色
		plot.setRangeGridlinePaint(Color.lightGray);//设置水平网格线的颜色
		plot.setDomainGridlinesVisible(true);    //设置垂直网格线是否显示
		plot.setRangeGridlinesVisible(true);     //设置水平网格线是否显示
		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); 
			CategoryPlot plot = chart.getCategoryPlot();   
			CategoryAxis domainAxis = plot.getDomainAxis();     
			//设置X轴坐标上的文字     
			domainAxis.setTickLabelFont(f); 
			//设置X轴的标题文字     
			domainAxis.setLabelFont(f); 
			
			ValueAxis numberaxis = plot.getRangeAxis(); 
			//设置Y轴坐标上的文字     
			numberaxis.setTickLabelFont(f);	
			//设置Y轴的标题文字     
			numberaxis.setLabelFont(f);  
		chart.getLegend().setItemFont(f);
	}
}

运行得到的图片：