Jfreechart学习笔记7-JFreeChart生成PDF文件

本文来自：http://langhua9527.iteye.com/category/66569?show_full=true

欢迎技术交流。 QQ：138986722

需要用的Jar包jfreechart-1.0.x.jar,jcommon-1.0.x.jar,itext-2.1.x.jar
import java.awt.Graphics2D; import java.awt.geom.Rectangle2D; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.OutputStream; import java.text.SimpleDateFormat; import org.jfree.chart.ChartFactory; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.DateAxis; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; import org.jfree.data.time.Month; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.data.xy.XYDataset; import com.lowagie.text.Document; import com.lowagie.text.DocumentException; import com.lowagie.text.Rectangle; import com.lowagie.text.pdf.DefaultFontMapper; import com.lowagie.text.pdf.FontMapper; import com.lowagie.text.pdf.PdfContentByte; import com.lowagie.text.pdf.PdfTemplate; import com.lowagie.text.pdf.PdfWriter; /** * A simple demonstration showing how to write a chart to PDF format using * JFreeChart and iText. * <P> * You can download iText from http://www.lowagie.com/iText. */ public class CreatePDF { /** * Saves a chart to a PDF file. * * @param file * the file. * @param chart * the chart. * @param width * the chart width. * @param height * the chart height. */ public static void saveChartAsPDF(File file, JFreeChart chart, int width,int height, FontMapper mapper) throws IOException { OutputStream out = new BufferedOutputStream(new FileOutputStream(file)); writeChartAsPDF(out, chart, width, height, mapper); out.close(); } /** * Writes a chart to an output stream in PDF format. * * @param out * the output stream. * @param chart * the chart. * @param width * the chart width. * @param height * the chart height. * */ public static void writeChartAsPDF(OutputStream out, JFreeChart chart, int width, int height, FontMapper mapper) throws IOException { Rectangle pagesize = new Rectangle(width, height); Document document = new Document(pagesize, 50, 50, 50, 50); try { PdfWriter writer = PdfWriter.getInstance(document, out); document.addAuthor("JFreeChart"); document.addSubject("Demonstration"); document.open(); PdfContentByte cb = writer.getDirectContent(); PdfTemplate tp = cb.createTemplate(width, height); Graphics2D g2 = tp.createGraphics(width, height, mapper); Rectangle2D r2D = new Rectangle2D.Double(0, 0, width, height); chart.draw(g2, r2D); g2.dispose(); cb.addTemplate(tp, 0, 0); } catch (DocumentException de) { System.err.println(de.getMessage()); } document.close(); } /** * Creates a dataset, consisting of two series of monthly data. * * * * @return the dataset. */ public static XYDataset createDataset() { TimeSeries s1 = new TimeSeries("L&G European Index Trust", 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", 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); TimeSeries s3 = new TimeSeries("L&G UK Index Trust", Month.class); s3.add(new Month(2, 2001), 119.6); s3.add(new Month(3, 2001), 113.2); s3.add(new Month(4, 2001), 127.2); s3.add(new Month(5, 2001), 114.1); s3.add(new Month(6, 2001), 112.6); s3.add(new Month(7, 2001), 129.2); s3.add(new Month(8, 2001), 126.5); s3.add(new Month(9, 2001), 122.7); s3.add(new Month(10, 2001), 111.5); s3.add(new Month(11, 2001), 116.1); s3.add(new Month(12, 2001), 120.3); s3.add(new Month(1, 2002), 121.7); s3.add(new Month(2, 2002), 121.0); s3.add(new Month(3, 2002), 119.6); s3.add(new Month(4, 2002), 123.2); s3.add(new Month(5, 2002), 121.6); s3.add(new Month(6, 2002), 118.8); s3.add(new Month(7, 2002), 121.6); TimeSeriesCollection dataset = new TimeSeriesCollection(); dataset.addSeries(s1); dataset.addSeries(s2); dataset.addSeries(s3); return dataset; } public static void main(String[] args) { try { // create a chart... XYDataset dataset = createDataset(); JFreeChart chart = ChartFactory.createTimeSeriesChart("Legal & General Unit Trust Prices", "Date","Price Per Unit", dataset, true, true, false); // some additional chart customisation here... XYPlot plot = chart.getXYPlot(); XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) plot.getRenderer(); renderer.setShapesVisible(true); DateAxis axis = (DateAxis) plot.getDomainAxis(); axis.setDateFormatOverride(new SimpleDateFormat("MMM-yyyy")); // write the chart to a PDF file... File fileName = new File("c://jfreechart1.pdf"); saveChartAsPDF(fileName, chart, 400, 300, new DefaultFontMapper()); } catch (IOException e) { System.out.println(e.getMessage()); } } }

Jfreechart学习笔记6-Servlet创建Jfreechart的方法

关键字: jfreechart servlet jdbc

数据库的内容
CATEGORY | VALUE
---------+------
London   | 54.3
New York | 43.4
Paris    | 17.9

import java.io.IOException; import java.io.OutputStream; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartUtilities; import org.jfree.chart.JFreeChart; import org.jfree.data.general.DefaultPieDataset; import org.jfree.data.general.PieDataset; import org.jfree.data.jdbc.JDBCPieDataset; public class PieServlet extends HttpServlet { public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { try { //获得输出流 OutputStream os = response.getOutputStream(); //获得相于的数据对象 DefaultPieDataset dataset = (DefaultPieDataset) this.readData(); JFreeChart chart = ChartFactory.createPieChart("Test", dataset, true, true, false); response.setContentType("image/png"); //写到输出流,并在页面上面显示 ChartUtilities.writeChartAsPNG(os, chart, 800, 600); os.close(); } catch (RuntimeException e) { e.printStackTrace(); } } public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doGet(request, response); } /** * 连结JDBC,并创建JDBCPieDataset对象返回 * @return */ private PieDataset readData() { //创建JDBCPieDataset对象 JDBCPieDataset data = null; String url = "jdbc:mysql://127.0.0.1:3306/jfreechartdb"; Connection con = null; try { Class.forName("com.mysql.jdbc.Driver"); } catch (ClassNotFoundException e) { System.err.print("ClassNotFoundException: "); } try { con = DriverManager.getConnection(url, "root", "root"); //把JDBCPieDataset对象和Connection关联 data = new JDBCPieDataset(con); String sql = "select * from piedata;"; //获得数据 data.executeQuery(sql); con.close(); } catch (SQLException e) { System.err.print("SQLException: "); } catch (Exception e) { System.err.print("Exception: "); } return data; } }

同时还有其它对象JDBCCategoryDataset,JDBCXYDataset，对应的是条状和，坐标,用于封装相应的数据

Jfreechart学习笔记5-JFreeChart对象的一般基本方法

public class 总结 { public static void main(String[] args) { 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)); } }

Jfreechart学习笔记4-简单Time类型图形创建

package com.langhua.time; 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; /** * 坐标是时间例子 * @author Administrator * */ 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); //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); } }

Jfreechart学习笔记3-简单Line图形创建

package com.langhua.line; 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; /** * 线状图形创建 * @author Administrator * */ 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); } } 基于XY的Line package com.langhua.line; 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.NumberAxis; import org.jfree.chart.axis.ValueAxis; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.plot.XYPlot; import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer; import org.jfree.chart.title.TextTitle; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import org.jfree.ui.RectangleInsets; /** * 基于XY的Line * @author Administrator * */ public class XYLine { public static void main(String[] args){ XYSeries series1 = new XYSeries("第一"); series1.add(1.0, 1.0); series1.add(2.0, 4.0); series1.add(3.0, 3.0); series1.add(4.0, 5.0); series1.add(5.0, 5.0); series1.add(6.0, 7.0); series1.add(7.0, 7.0); series1.add(8.0, 8.0); XYSeries series2 = new XYSeries("第二"); series2.add(1.0, 5.0); series2.add(2.0, 7.0); series2.add(3.0, 6.0); series2.add(4.0, 8.0); series2.add(5.0, 4.0); series2.add(6.0, 4.0); series2.add(7.0, 2.0); series2.add(8.0, 1.0); series2.add(9.0, 1.0); series2.add(10.0, 1.0); series2.add(8.1, 1.2); series2.add(8.2, 1.3); series2.add(8.5, 1.4); series2.add(11.0, 1.0); XYSeries series3 = new XYSeries("第三"); series3.add(3.0, 4.0); series3.add(4.0, 3.0); series3.add(5.0, 2.0); series3.add(6.0, 3.0); series3.add(7.0, 6.0); series3.add(8.0, 3.0); series3.add(9.0, 4.0); series3.add(10.0, 3.0); XYSeries series4 = new XYSeries("第四"); series4.add(2.0, 4.0); series4.add(3.0, 3.0); series4.add(6.0, 2.0); series4.add(1.0, 3.0); series4.add(2.0, 6.0); XYSeriesCollection dataset = new XYSeriesCollection(); dataset.addSeries(series1); dataset.addSeries(series2); dataset.addSeries(series3); dataset.addSeries(series4); JFreeChart chart = ChartFactory.createXYLineChart("Line Chart例子","X坐标","Y坐标",dataset,PlotOrientation.VERTICAL,true,true,false ); XYLine.configFont(chart); // 背景色 chart.setBackgroundPaint(Color.white); // 获得XYPlot对象 XYPlot plot = (XYPlot) chart.getPlot(); //设置坐标后面的背景色 plot.setBackgroundPaint(Color.lightGray); plot.setAxisOffset(new RectangleInsets(5.0, 5.0, 5.0, 5.0)); plot.setDomainGridlinePaint(Color.white); plot.setRangeGridlinePaint(Color.white); XYLineAndShapeRenderer renderer = (XYLineAndShapeRenderer) plot.getRenderer(); renderer.setShapesVisible(true); renderer.setShapesFilled(true); // change the auto tick unit selection to integer units only... NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis(); rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); FileOutputStream fos_jpg = null; try { fos_jpg = new FileOutputStream("c://LineXY.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); //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); } }

 

Jfreechart学习笔记2-简单bar图形创建

package com.langhua.bar; 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; /** * 条状测试 * @author Administrator * */ public class BarChar { 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 BarChar.configFont(chart); //输出 FileOutputStream fos_jpg = null; try { fos_jpg = new FileOutputStream("c://Bar.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); //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); } } 乱码解决的方法 1.重新设置标题的字体和内容 chart.setTitle(new TextTitle(chart.getTitle().getText(),titleFont)); 2.重新设置X轴标题字体和刻度字体 //设置X轴标题字体 domainAxis.setLabelFont(xfont); //设置X轴字体 domainAxis.setTickLabelFont(xfont); 3.重新设置Y轴标题字体和刻度字体 //设置Y轴标题字体 rangeAxis.setLabelFont(yfont); //设置Y轴字体 rangeAxis.setTickLabelFont(yfont); 4.设置图象最下方，底部的字体 chart.getLegend().setItemFont(kfont); Bar3D的创建和Bar大部分基本相同，但是创建的时候方法不同 JFreeChart chart = ChartFactory.createBarChart3D("Bar Chart 例子","水果(X)", "价格(Y)", dataset,PlotOrientation

 

Jfreechart学习笔记1-简单Pie图形创建

饼形状图形的创建的例子 package com.langhua.Pie; 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; 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("中文",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); // 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("Category 1", 0.10); piePlot.setExplodePercent("Category 2", 0.10); piePlot.setExplodePercent("Category 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); //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(); } } } PiePlot3D图象的创建和PiePlot基本一样，就是创建的时候的区别，还有3D不支持爆炸模式 JFreeChart jfreechart = ChartFactory.createPieChart3D("Simple Pie Chart", dataset, true, true, false); PiePlot3D piePlot = (PiePlot3D) jfreechart.getPlot(); 解决乱码的问题 1.标题乱码，重新定义TextTitle title = new TextTitle("Pie状图");标题，再设置字体，再把标题到图像上面 2.下面底部字体的乱码jfreechart.getLegend().setItemFont(font);这样设置就可以解决 3.图形旁边的字体乱码piePlot.setLabelFont(font); 如下 //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);