jfreechart学习笔记

package com.yong;

import java.awt.BasicStroke;
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.PiePlot;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.general.DefaultPieDataset;

/**
*
* @author 赵永恩
*
*/
public class Pie {
   public static void main(String[] args) {
       //数据
       DefaultPieDataset dataset = new DefaultPieDataset();
       dataset.setValue("中文", 43.2);
       dataset.setValue("Category 2", 27.9);
       dataset.setValue("Category 3", 79.5);
       dataset.setValue("Category 4", null);
       dataset.setValue("Category 5", 0);
       dataset.setValue("Category 6", -50.0f);
       //创建 Jfreechart对象
       JFreeChart jfreechart = ChartFactory.createPieChart("Simple Pie Chart", dataset, true, true, false);
       PiePlot piePlot = (PiePlot) jfreechart.getPlot();
       //指定分类饼的颜色
       piePlot.setSectionPaint(33,Color.blue);
       piePlot.setSectionPaint(2,Color.red);
       piePlot.setSectionPaint(3,Color.yellow);

       //设置Pie的边框是否可见
       piePlot.setSectionOutlinesVisible(true);
       // 指定图片的透明度(0.0-1.0)
       piePlot.setForegroundAlpha(1.0f);
       //设置边框的颜色
       piePlot.setBaseSectionOutlinePaint(Color.green);
       //设置边框的粗细,new BasicStroke(2.0f)
       piePlot.setBaseSectionOutlineStroke(new BasicStroke(1));
       //设置空值,0值,负值是否显示出来,如果显示的话就是false
       piePlot.setIgnoreNullValues(true);
       piePlot.setIgnoreZeroValues(true);

//设置上面的样式,0表示KEY,1表示VALUE,2表示百分之几,DecimalFormat用来显示百分比的格式
piePlot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0}=>{1}({2})",NumberFormat.getNumberInstance(),new DecimalFormat("0.00%")));

//设置下面方框的样式,0表示KEY,1表示VALUE,2表示百分之几,DecimalFormat用来显示百分比的格式
piePlot.setLegendLabelGenerator(new StandardPieSectionLabelGenerator("{0}=>{1}({2})",NumberFormat.getNumberInstance(), new DecimalFormat("0.00%")));

       //爆炸模式,使Pie的一块分离出去,不支持3D
       piePlot.setExplodePercent(1, 0.10);
       piePlot.setExplodePercent(2, 0.10);
       piePlot.setExplodePercent(3, 0.10);

       //定义字体格式
       Font font = new Font("微软雅黑", Font.CENTER_BASELINE, 12);
       //定义图片标题
       TextTitle title = new TextTitle("Pie状图标题嘛");
       //设置标题的格式
       title.setFont(font);
       //把标题设置到图片里面
       jfreechart.setTitle(title);

       //设置字体,非常关键不然会出现乱码的,下方的字体
       jfreechart.getLegend().setItemFont(font);
       //Pie图的字体
       piePlot.setLabelFont(font);

       //创建输出流
       FileOutputStream fos_jpg = null;
       try {
           fos_jpg = new FileOutputStream("c:\\Pie.jpg");
           //用工具把图象写到硬盘,支持两种格式,JPG,PNG,还支持MAP
           ChartUtilities.writeChartAsJPEG(fos_jpg,0.99f,jfreechart,640,480,null);
           fos_jpg.close();
       } catch (Exception e) {
           e.printStackTrace();
       }
   }
}

package com.yong;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.io.FileOutputStream;
import java.io.UnsupportedEncodingException;
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;

/**
*
* @author 赵永恩
*
*/
public class Pie3D {

   public static void main(String[] args) throws UnsupportedEncodingException {
       DefaultPieDataset dataset = new DefaultPieDataset();
       dataset.setValue("中文123", 43.2);
       dataset.setValue("Category 2", 27.9);
       dataset.setValue("Category 3", 27.9);
       dataset.setValue("Category 4", null);
       dataset.setValue("Category 5", 0);
       dataset.setValue("Category 6", -50.0f);

       JFreeChart jfreechart = ChartFactory.createPieChart3D("Simple Pie Chart", dataset, true, true, false);
       PiePlot3D piePlot = (PiePlot3D) jfreechart.getPlot();
       //指定分类饼的颜色
       //piePlot.setSectionPaint("Category 1",Color.blue);
       //piePlot.setSectionPaint("Category 2",Color.red);
       //piePlot.setSectionPaint("Category 3",Color.yellow);

//设置Pie的边框是否可见
piePlot.setSectionOutlinesVisible(true);

       //设置边框的颜色
       piePlot.setBaseSectionOutlinePaint(Color.green);
       //设置边框的粗细,new BasicStroke(2.0f)
       piePlot.setBaseSectionOutlineStroke(new BasicStroke(0));
       //设置空值,0值,负值是否显示出来,如果显示的话就是false
       piePlot.setIgnoreNullValues(true);
       piePlot.setIgnoreZeroValues(true);

       //爆炸模式,使Pie的一块分离出去,不支持3D
       piePlot.setExplodePercent(11, 0.10);
       piePlot.setExplodePercent(2, 0.10);
       piePlot.setExplodePercent(3, 0.10);

       //定义字体格式
       Font font = new Font("微软雅黑", Font.CENTER_BASELINE, 12);
       //定义图片标题
       TextTitle title = new TextTitle("Pie状图");
       //设置标题的格式
       title.setFont(font);
       //把标题设置到图片里面
       jfreechart.setTitle(title);

       //设置字体,非常关键不然会出现乱码的,下方的字体
       jfreechart.getLegend().setItemFont(font);
       //Pie图的字体
       piePlot.setLabelFont(font);

       FileOutputStream fos_jpg = null;
       try {
           fos_jpg = new FileOutputStream("c:\\Pie3D.jpg");
           ChartUtilities.writeChartAsJPEG(fos_jpg, 0.99f, jfreechart, 640, 480,null);
           fos_jpg.close();
       } catch (Exception e) {
           e.printStackTrace();
       }

}

package com.yong;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
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.ValueAxis;
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;

/**
*
* @author 赵永恩
*
*/
public class Bar {
private static final long serialVersionUID = 1L;

   public static void main(String[] args) {
       //创建数据
       DefaultCategoryDataset dataset = new DefaultCategoryDataset();
       //数据初始化
       dataset.addValue(1.0, "北京", "苹果");
       dataset.addValue(7.0, "北京", "香蕉");
       dataset.addValue(-3.0, "北京", "桔子");
       dataset.addValue(2.0, "上海", "苹果");
       dataset.addValue(3.0, "上海", "香蕉");
       dataset.addValue(2.0, "上海", "桔子");
       //创建 JFreeChart 对象
       JFreeChart chart = ChartFactory.createBarChart("Bar Chart 例子","水果(X)", "价格(Y)", dataset,PlotOrientation.VERTICAL,true,true,false);
       //配置JFreeChart对象相关信息,如:字体大小,颜色,防止乱码
       Bar.configFont(chart);
       //输出
       FileOutputStream fos_jpg = null;
       try {
           fos_jpg = new FileOutputStream("c:\\Bar11.jpg");
           ChartUtilities.writeChartAsJPEG(fos_jpg,0.99f,chart,800,600,   null);
           fos_jpg.close();
       } catch (Exception e) {
           e.printStackTrace();
       }
   }
   private static void configFont(JFreeChart chart) {
       //设置边框宽度
       chart.setBorderStroke(new BasicStroke(1));
       //设置边框是否可见
       chart.setBorderVisible(true);
       //设置边框着色
       chart.setBorderPaint(Color.cyan);
       //设置背景颜色
       //chart.setBackgroundPaint(Color.YELLOW);
       // 配置字体
       Font xfont = new Font("宋体", Font.CENTER_BASELINE, 20);// X轴
       Font yfont = new Font("宋体", Font.CENTER_BASELINE, 20);// Y轴
       Font kfont = new Font("宋体", Font.CENTER_BASELINE, 18);// 底部
       Font titleFont = new Font("微软雅黑", Font.CENTER_BASELINE, 25); // 图片标题
       CategoryPlot plot = chart.getCategoryPlot();// 图形的绘制结构对象
       //数据轴网格线条颜色
       plot.setRangeGridlinePaint(Color.BLUE);
       //数据轴网格线条笔触
       plot.setRangeGridlineStroke(new BasicStroke(1.0f));
       // 图片标题
       chart.setTitle(new TextTitle(chart.getTitle().getText(),titleFont));

// 底部字体样式，防止乱码
chart.getLegend().setItemFont(kfont);

       //X轴
       CategoryAxis domainAxis = plot.getDomainAxis();
       //设置X轴标题字体
       domainAxis.setLabelFont(xfont);
       //设置X轴字体
       domainAxis.setTickLabelFont(xfont);
       //设置字体颜色
       domainAxis.setTickLabelPaint(Color.BLUE);
       //横轴上的label斜显示
       domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
       //domainAxis.setCategoryLabelPositions(CategoryLabelPositions.DOWN_45);
       //分类轴边距,同种类型之间的距离
       //这是分类之间的距离,和BAR与BAR之间的距离有差别
       //domainAxis.setCategoryMargin(0.2f);
       //分类轴下（左）边距,就是离左边的距离
       domainAxis.setLowerMargin(0.1);
       //分类轴下（右）边距,就是离最右边的距离
       domainAxis.setUpperMargin(0.1);

       //Y 轴
       ValueAxis rangeAxis = plot.getRangeAxis();
       //设置Y轴标题字体
       rangeAxis.setLabelFont(yfont);
       //设置Y轴字体
       rangeAxis.setTickLabelFont(yfont);
       // 字体颜色
       //rangeAxis.setLabelPaint(Color.RED); //包不同就这个属性 yong
       //设置Bar的颜色
       BarRenderer renderer = (BarRenderer) plot.getRenderer();

       renderer.setSeriesPaint(0, Color.gray);
       renderer.setSeriesPaint(1, Color.orange);
       // 每个BAR之间的间隔
       renderer.setItemMargin(0.0f);
       //每个BAR的最大宽度
       //renderer.setMaximumBarWidth(0.5f);
   }
}

package com.yong;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
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.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.HorizontalAlignment;
import org.jfree.ui.RectangleEdge;

/**
*
* @author 赵永恩
*
*/
public class Line {

   public static void main(String[] args) {
       //数据
       DefaultCategoryDataset dataset = new DefaultCategoryDataset();
       dataset.addValue(212, "Classes类", "JDK 1.0版本");
       dataset.addValue(504, "Classes类", "JDK 1.1版本");
       dataset.addValue(1520, "Classes类", "SDK 1.2版本");
       dataset.addValue(1842, "Classes类", "SDK 1.3版本");
       dataset.addValue(2991, "Classes类", "SDK 1.4版本");
       JFreeChart chart = ChartFactory.createLineChart(   "Java Standard Class Library","Release版本","Class数量",dataset,PlotOrientation.VERTICAL,false,   true,false   );
       //配置chart
       Line.configFont(chart);
       //设置标题
       TextTitle t = new TextTitle("Number of Classes By Release");
       t.setFont(new Font("Comic Sans MS", Font.PLAIN, 15));
       chart.addSubtitle(t);
       //设置标题,并把标题放到最下面的右边
       TextTitle source = new TextTitle("Source: Java In A Nutshell (4th Edition) by David Flanagan (O’Reilly)");
       source.setFont(new Font("Comic Sans MS", Font.PLAIN, 15));
       //放到底部
       source.setPosition(RectangleEdge.BOTTOM);
       //放到右边
       source.setHorizontalAlignment(HorizontalAlignment.RIGHT);
       //添加
       chart.addSubtitle(source);

//设置背影色
chart.setBackgroundPaint(Color.white);

CategoryPlot plot = (CategoryPlot)chart.getPlot();

       //设置网格线
       plot.setRangeGridlinePaint(Color.white);
       // customise the range axis...(这个我不知道是啥子)
       NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
       rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits());
       //设置线与线之间的连结点的样式,比如说是否空心,颜色等
       LineAndShapeRenderer renderer = (LineAndShapeRenderer) plot   .getRenderer();
       renderer.setShapesVisible(true);
       renderer.setDrawOutlines(true);
       renderer.setUseFillPaint(true);
       renderer.setFillPaint(Color.yellow);

       FileOutputStream fos_jpg = null;
       try {
           fos_jpg = new FileOutputStream("c:\\Line.jpg");
           ChartUtilities.writeChartAsJPEG(fos_jpg,0.99f,chart,800,600,   null);
           fos_jpg.close();
       } catch (Exception e) {
           e.printStackTrace();
       }
   }
    /**
   * 解决乱码和样式等问题
   * @param chart
   */
   private static void configFont(JFreeChart chart) {
       // 配置字体
       Font xfont = new Font("宋体", Font.CENTER_BASELINE, 12);// X轴
       Font yfont = new Font("宋体", Font.CENTER_BASELINE, 20);// Y轴
       Font kfont = new Font("宋体", Font.CENTER_BASELINE, 18);// 底部
       Font titleFont = new Font("微软雅黑", Font.CENTER_BASELINE, 25); // 图片标题
       CategoryPlot plot = chart.getCategoryPlot();// 图形的绘制结构对象
       //数据轴网格线条颜色
       plot.setRangeGridlinePaint(Color.BLUE);
       //数据轴网格线条笔触
       plot.setRangeGridlineStroke(new BasicStroke(1.0f));
       // 图片标题
       chart.setTitle(new TextTitle(chart.getTitle().getText(),titleFont));

       //X轴
       CategoryAxis domainAxis = plot.getDomainAxis();
       //设置X轴标题字体
       domainAxis.setLabelFont(xfont);
       //设置X轴字体
       domainAxis.setTickLabelFont(xfont);
       //设置字体颜色
       domainAxis.setTickLabelPaint(Color.BLUE);
       //横轴上的label斜显示
       //domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
       //domainAxis.setCategoryLabelPositions(CategoryLabelPositions.DOWN_45);
       //分类轴边距,同种类型之间的距离,比如说Row 1之间的
       //domainAxis.setCategoryMargin(0.2f);
       //分类轴下（左）边距,就是离左边的距离
       domainAxis.setLowerMargin(0.1);
       //分类轴下（右）边距,就是离最右边的距离
       domainAxis.setUpperMargin(0.1);

       //Y 轴
       ValueAxis rangeAxis = plot.getRangeAxis();
       //设置Y轴标题字体
       rangeAxis.setLabelFont(yfont);
       //设置Y轴字体
       rangeAxis.setTickLabelFont(yfont);
       // 字体颜色
       rangeAxis.setLabelPaint(Color.RED);
   }
}

package com.yong;

import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Font;
import java.io.FileOutputStream;
import java.text.SimpleDateFormat;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.ValueAxis;
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.RectangleInsets;

/**
*
* @author 赵永恩
*
*/
public class TimeSeriesTest {

   public static void main(String[] args) {
       //初始化数据
       TimeSeries s1 = new TimeSeries("L&G European Index Trust中文", Month.class);
       s1.add(new Month(2, 2001), 181.8);
       s1.add(new Month(3, 2001), 167.3);
       s1.add(new Month(4, 2001), 153.8);
       s1.add(new Month(5, 2001), 167.6);
       s1.add(new Month(6, 2001), 158.8);
       s1.add(new Month(7, 2001), 148.3);
       s1.add(new Month(8, 2001), 153.9);
       s1.add(new Month(9, 2001), 142.7);
       s1.add(new Month(10, 2001), 123.2);
       s1.add(new Month(11, 2001), 131.8);
       s1.add(new Month(12, 2001), 139.6);
       s1.add(new Month(1, 2002), 142.9);
       s1.add(new Month(2, 2002), 138.7);
       s1.add(new Month(3, 2002), 137.3);
       s1.add(new Month(4, 2002), 143.9);
       s1.add(new Month(5, 2002), 139.8);
       s1.add(new Month(6, 2002), 137.0);
       s1.add(new Month(7, 2002), 132.8);
       TimeSeries s2 = new TimeSeries("L&G UK Index Trust中文", Month.class);
       s2.add(new Month(2, 2001), 129.6);
       s2.add(new Month(3, 2001), 123.2);
       s2.add(new Month(4, 2001), 117.2);
       s2.add(new Month(5, 2001), 124.1);
       s2.add(new Month(6, 2001), 122.6);
       s2.add(new Month(7, 2001), 119.2);
       s2.add(new Month(8, 2001), 116.5);
       s2.add(new Month(9, 2001), 112.7);
       s2.add(new Month(10, 2001), 101.5);
       s2.add(new Month(11, 2001), 106.1);
       s2.add(new Month(12, 2001), 110.3);
       s2.add(new Month(1, 2002), 111.7);
       s2.add(new Month(2, 2002), 111.0);
       s2.add(new Month(3, 2002), 109.6);
       s2.add(new Month(4, 2002), 113.2);
       s2.add(new Month(5, 2002), 111.6);
       s2.add(new Month(6, 2002), 108.8);
       s2.add(new Month(7, 2002), 101.6);
       TimeSeriesCollection dataset = new TimeSeriesCollection();
       dataset.addSeries(s1);
       dataset.addSeries(s2);
       //创建相应的对象
       JFreeChart chart = ChartFactory.createTimeSeriesChart("日期","Date时间","Price价格",dataset,true,   true,   false   );
       //配置字体等格式
       TimeSeriesTest.configFont(chart);
       //设置背影色,由于这个例是COPY过来的,并没有放到TimeSeriesTest.configFont(chart);这个方法里面
       chart.setBackgroundPaint(Color.white);
       //获得相当对象
       XYPlot plot = (XYPlot) chart.getPlot();
       //背影色
       plot.setBackgroundPaint(Color.lightGray);
       //X轴网格线和Y轴网格线颜色
       plot.setDomainGridlinePaint(Color.white);
       plot.setRangeGridlinePaint(Color.white);
       //以下还不清楚
       plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0));
       plot.setDomainCrosshairVisible(true);
       plot.setRangeCrosshairVisible(true);
       //以下也不清楚
       XYItemRenderer r = plot.getRenderer();
       if (r instanceof XYLineAndShapeRenderer) {
           XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) r;
           renderer.setBaseShapesVisible(true);
           renderer.setBaseShapesFilled(true);
       }
       //设置X坐标上面的格式
       DateAxis axis = (DateAxis) plot.getDomainAxis();
       axis.setDateFormatOverride(new SimpleDateFormat("MMM-yyyy"));

       FileOutputStream fos_jpg = null;
       try {
           fos_jpg = new FileOutputStream("c:\\TimeSeries.jpg");
           ChartUtilities.writeChartAsJPEG(fos_jpg,0.99f,chart,800,600,   null);
           fos_jpg.close();
       } catch (Exception e) {
           e.printStackTrace();
       }
   }
   /**
   * 配置字体等信息
   * @param chart
   */
   private static void configFont(JFreeChart chart) {
       // 配置字体
       Font xfont = new Font("宋体", Font.CENTER_BASELINE, 12);// X轴
       Font yfont = new Font("宋体", Font.CENTER_BASELINE, 20);// Y轴
       Font kfont = new Font("宋体", Font.CENTER_BASELINE, 18);// 底部
       Font titleFont = new Font("微软雅黑", Font.CENTER_BASELINE, 25); // 图片标题
       XYPlot plot = (XYPlot) chart.getPlot();// 图形的绘制结构对象
       //数据轴网格线条颜色
       plot.setRangeGridlinePaint(Color.BLUE);
       //数据轴网格线条笔触
       plot.setRangeGridlineStroke(new BasicStroke(1.0f));
       // 图片标题
       chart.setTitle(new TextTitle(chart.getTitle().getText(),titleFont));
       chart.getLegend().setItemFont(kfont);

       //X轴
       ValueAxis domainAxis = plot.getDomainAxis();
       //设置X轴标题字体
       domainAxis.setLabelFont(xfont);
       //设置X轴字体
       domainAxis.setTickLabelFont(xfont);
       //设置字体颜色
       domainAxis.setTickLabelPaint(Color.BLUE);
       //横轴上的label斜显示
       //domainAxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45);
       //domainAxis.setCategoryLabelPositions(CategoryLabelPositions.DOWN_45);
       //分类轴边距,同种类型之间的距离,比如说Row 1之间的
       //domainAxis.setCategoryMargin(0.2f);
       //分类轴下（左）边距,就是离左边的距离
       domainAxis.setLowerMargin(0.1);
       //分类轴下（右）边距,就是离最右边的距离
       domainAxis.setUpperMargin(0.1);

}
}

JFreeChart jfreechart = null;

//获得标题title.getText()
TextTitle title = jfreechart.getTitle();

//设置标题
jfreechart.setTitle("A Chart Title");

//设置标题的位置
jfreechart.getTitle().setPosition(RectangleEdge.BOTTOM);

           //当然了还可以设置副标题
           TextTitle subtitle1 = new TextTitle("A Subtitle");
           jfreechart.addSubtitle(subtitle1);

//获得副标题,可以有很多副标题,这是获得第0个
Title subtitle = jfreechart.getSubtitle(0);

//设置背景颜色
jfreechart.setBackgroundPaint(Color.blue);

           //当然还可以设置多种背影颜色
           //表示在某个坐标之后是什么颜色
           Paint p = new GradientPaint(0, 0, Color.white, 1000, 0, Color.green);
           jfreechart.setBackgroundPaint(p);

//设置背景图片LOG
jfreechart.setBackgroundImage(JFreeChart.INFO.getLogo());

//设置背景图片的位置,这个没有试过
jfreechart.setBackgroundImageAlignment(Align.TOP_LEFT);

           //Plot Attributes(共有的)
           //Plot(饼状图,)
           Plot plot1 = jfreechart.getPlot();

//Plot(柱状图,)
CategoryPlot plot2 = jfreechart.getCategoryPlot();

//Plot(XY坐标图)
XYPlot plot3 = jfreechart.getXYPlot();

           //设置背影颜色(是图象的)(其它形状同理)
           plot1.setBackgroundPaint(Color.white);
           //设置背景颜色
           plot1.setBackgroundImage(JFreeChart.INFO.getLogo());

           //Axis Attributes(X和Y上面的,轴对象,分为X轴Y轴)
           // get an axis reference...
           CategoryPlot plot = jfreechart.getCategoryPlot();

           //获得X轴对象
           CategoryAxis domainAxis = plot.getDomainAxis();
           //获得Y轴对象
           ValueAxis rangeAxis = plot.getRangeAxis();

           //change axis properties...改变属性
           domainAxis.setLabel("Categories");
           domainAxis.setLabelFont(new Font("宋体", Font.CENTER_BASELINE, 20));

//设置X轴字体,Y轴同样
domainAxis.setTickLabelFont(new Font("宋体", Font.CENTER_BASELINE, 20));
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作者：iteye_19819
来源：CSDN
原文：https://blog.csdn.net/iteye_19819/article/details/82067192
版权声明：本文为博主原创文章，转载请附上博文链接！

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