JfreeChart相关

加入jfreechart-1.0.13.jar，jcommon-1.0.16.jar

一、饼状图代码

package tf;

import java.awt.Color;
import java.awt.Font;
import java.io.FileOutputStream;
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.TextTitle;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;

public class PieChartTest {
	public static void main(String[] args) {
		PieDataset dataset = getDataSet();
		JFreeChart chart = ChartFactory.createPieChart3D(null, 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}={1}({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);
		
		/*------设置图片标题的字体-----------*/ 
		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);
	
		/*------设置图片显示的字体-----------*/ 
		plot.setLabelFont(new Font("黑体", Font.PLAIN, 12));
		  
		/*------设置图片底部的字体-----------*/
		chart.getLegend().setItemFont(new Font("宋体", Font.PLAIN, 12)); 
		
		FileOutputStream fos_jpg = null;
		try {
			fos_jpg = new FileOutputStream("D:\\项目状态分布.jpg");
			ChartUtilities.writeChartAsJPEG(fos_jpg, 1, chart, 640, 480, null);
			fos_jpg.close();
		} catch (Exception e) {
		}
	}

	private static PieDataset getDataSet() {
		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));
		return dataset;
	}
}

 

二、柱状图代码

package tf;

import java.awt.Color;
import java.awt.Font;
import java.awt.GradientPaint;
import java.io.FileOutputStream;

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.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.category.DefaultCategoryDataset;

public class BarChartTest {

	public static void main(String[] args) {
		DefaultCategoryDataset dataset = getDataSet();
		JFreeChart chart = ChartFactory.createBarChart(null, "网站", "数值",
				dataset, PlotOrientation.VERTICAL, true, true, false);
		
		/*------设置图片标题的字体-----------*/ 
		Font font = new Font("黑体", Font.CENTER_BASELINE, 20);
		TextTitle title = new TextTitle("网站信息统计");
		title.setFont(font);
		chart.setTitle(title);

		chart.setBackgroundPaint(Color.white);

		CategoryPlot plot = (CategoryPlot) chart.getPlot();
		CategoryAxis domainAxis = plot.getDomainAxis();
		
		NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
		rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
		BarRenderer renderer = (BarRenderer) plot.getRenderer();  
		renderer.setDrawBarOutline(false);

		/*------设置X轴坐标上的文字-----------*/  
	    domainAxis.setTickLabelFont(new Font("sans-serif", Font.PLAIN, 11));  
	  
	    /*------设置X轴的标题文字------------*/  
	    domainAxis.setLabelFont(new Font("宋体", Font.PLAIN, 12));  
	  
	    /*------设置Y轴坐标上的文字-----------*/  
	    rangeAxis.setTickLabelFont(new Font("sans-serif", Font.PLAIN, 12));  
	  
	    /*------设置Y轴的标题文字------------*/  
	    rangeAxis.setLabelFont(new Font("黑体", Font.PLAIN, 12));  
	  
	    /*------设置底部标题文字-----------*/  
	    chart.getLegend().setItemFont(new Font("宋体", Font.PLAIN, 12));  
	    
		GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, Color.blue, 0.0f,
				0.0f, new Color(0, 0, 64));
		GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, Color.green, 0.0f,
				0.0f, new Color(0, 64, 0));
		GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 0.0f,
				0.0f, new Color(64, 0, 0));
		renderer.setSeriesPaint(0, gp0);
		renderer.setSeriesPaint(1, gp1);
		renderer.setSeriesPaint(2, gp2);
				
		domainAxis.setCategoryLabelPositions(CategoryLabelPositions
				.createUpRotationLabelPositions(Math.PI / 6.0));		
		
		FileOutputStream fos_jpg = null;
		try {
			fos_jpg = new FileOutputStream("D:\\柱状图.jpg");
			ChartUtilities.writeChartAsJPEG(fos_jpg, 1, chart, 640, 480, null);
			fos_jpg.close();
		} catch (Exception e) {
		}

	}

	private static DefaultCategoryDataset getDataSet() {
		DefaultCategoryDataset dataset = new DefaultCategoryDataset();
		String s = "每日PV";  
	    String s1 = "每日IP数";  
	    String s2 = "注册用户数";  
	    String s3 = "A网站";  
	    String s4 = "B网站";  
	    String s5 = "C网站";  
	    String s6 = "D网站";  
	    String s7 = "E网站";  
	    dataset.addValue(1.0D, s, s3);  
	    dataset.addValue(4D, s, s4);  
	    dataset.addValue(3D, s, s5);  
	    dataset.addValue(5D, s, s6);  
	    dataset.addValue(5D, s, s7);  
	    dataset.addValue(5D, s1, s3);  
	    dataset.addValue(7D, s1, s4);  
	    dataset.addValue(6D, s1, s5);  
	    dataset.addValue(8D, s1, s6);  
	    dataset.addValue(4D, s1, s7);  
	    dataset.addValue(4D, s2, s3);  
	    dataset.addValue(3D, s2, s4);  
	    dataset.addValue(2D, s2, s5);  
	    dataset.addValue(3D, s2, s6);  
	    dataset.addValue(6D, s2, s7); 
		return dataset;
	}
}