JFreeChart 图表生成实例(饼图、柱状图、折线图、时序图)，jfreechart折线,import java.

JFreeChart 图表生成实例(饼图、柱状图、折线图、时序图)，jfreechart折线,import java.

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;  }}