JAVA Swing使用JFreeChart实现折线图绘制

效果如下:

　　

实现步骤:

　　1.导入JAR包

　　　　

　　　　jfreechart官网下载的zip文件中包含这两个jar包

　　2.代码编写

 import org.jfree.chart.ChartFactory;
 import org.jfree.chart.ChartPanel;
 import org.jfree.chart.JFreeChart;
 import org.jfree.chart.axis.DateAxis;
 import org.jfree.chart.axis.DateTickUnit;
 import org.jfree.chart.labels.ItemLabelAnchor;
 import org.jfree.chart.labels.ItemLabelPosition;
 import org.jfree.chart.labels.StandardXYItemLabelGenerator;
 import org.jfree.chart.plot.XYPlot;
 import org.jfree.chart.renderer.xy.XYItemRenderer;
 import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
 import org.jfree.chart.title.TextTitle;
 import org.jfree.data.time.Month;
 import org.jfree.data.time.TimeSeries;
 import org.jfree.data.time.TimeSeriesCollection;
 import org.jfree.ui.TextAnchor;

 import javax.swing.*;
 import java.awt.*;
 import java.text.SimpleDateFormat;

 public class TimeSeriesChart {
     private TimeSeriesChart() {

         // A网站的访问量统计
         TimeSeries timeSeries1 = new TimeSeries("A", Month.class);
         // 添加数据
         timeSeries1.add(new Month(1, 2016), 154);
         timeSeries1.add(new Month(2, 2016), 256);
         timeSeries1.add(new Month(3, 2016), 312);
         timeSeries1.add(new Month(4, 2016), 489);
         timeSeries1.add(new Month(5, 2016), 563);
         timeSeries1.add(new Month(6, 2016), 555);
         timeSeries1.add(new Month(7, 2016), 359);
         timeSeries1.add(new Month(8, 2016), 291);
         timeSeries1.add(new Month(9, 2016), 123);
         timeSeries1.add(new Month(10, 2016), 438);
         timeSeries1.add(new Month(11, 2016), 286);

         // A网站的访问量统计
         TimeSeries timeSeries2 = new TimeSeries("A", Month.class);
         // 添加数据
         timeSeries2.add(new Month(1, 2016), 124);
         timeSeries2.add(new Month(2, 2016), 326);
         timeSeries2.add(new Month(3, 2016), 12);
         timeSeries2.add(new Month(4, 2016), 567);
         timeSeries2.add(new Month(5, 2016), 546);
         timeSeries2.add(new Month(6, 2016), 123);
         timeSeries2.add(new Month(7, 2016), 222);
         timeSeries2.add(new Month(8, 2016), 545);
         timeSeries2.add(new Month(9, 2016), 56);
         timeSeries2.add(new Month(10, 2016), 543);
         timeSeries2.add(new Month(11, 2016), 221);

         // 定义时间序列的集合
         TimeSeriesCollection lineDataset = new TimeSeriesCollection();
         lineDataset.addSeries(timeSeries1);
         lineDataset.addSeries(timeSeries2);

 //         JFreeChart chart = ChartFactory.createXYStepChart("Time line graph", "M", "F", xySeriesCollection, PlotOrientation.HORIZONTAL, false, false, false);
         JFreeChart chart = ChartFactory.createTimeSeriesChart("Time line graph", "M", "F", lineDataset, false, false, false);
         //设置主标题
         chart.setTitle(new TextTitle("A,B网站访问量统计对比图"));
         //设置子标题
         TextTitle subtitle = new TextTitle("2016年度", new Font("宋体", Font.BOLD, 12));
         chart.addSubtitle(subtitle);

         chart.setAntiAlias(true);

         //设置时间轴的范围。
         XYPlot plot = (XYPlot) chart.getPlot();
         DateAxis dateaxis = (DateAxis) plot.getDomainAxis();
         dateaxis.setDateFormatOverride(new SimpleDateFormat("M"));
         dateaxis.setTickUnit(new DateTickUnit(DateTickUnit.MONTH, 1));

         //设置曲线是否显示数据点
         XYLineAndShapeRenderer xylinerenderer = (XYLineAndShapeRenderer) plot.getRenderer();
         xylinerenderer.setBaseShapesVisible(true);

         //设置曲线显示各数据点的值
         XYItemRenderer xyitem = plot.getRenderer();
         xyitem.setBaseItemLabelsVisible(true);
         xyitem.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12, TextAnchor.BASELINE_CENTER));
         xyitem.setBaseItemLabelGenerator(new StandardXYItemLabelGenerator());
         xyitem.setBaseItemLabelFont(new Font("Dialog", Font.BOLD, 12));
         plot.setRenderer(xyitem);

         JPanel jPanel = new ChartPanel(chart);

         JFrame frame = new JFrame("JFreechart Test");
         frame.add(jPanel);
         frame.setBounds(0, 0, 800, 600);
         frame.setVisible(true);
     }

     public static void main(String[] args) {
         TimeSeriesChart timeSeriesChart = new TimeSeriesChart();
     }
 }