JFreeChart生成图表

package cfwx.demo.chart;

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.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;
}

}