JFreeChart学习
一.步骤:
- 创建数据集(准备数据)
- 根据数据集生成JFreeChart对象,并对其做相应的设置(标题,图例,x轴,Y轴,对象渲染等)
- 将JFreeChart对象输出到文件或者Servlet输出流等
二.具体举例
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饼状图
示例代码:
package com.lky.experiment; import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.awt.Toolkit; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.File; import java.text.DecimalFormat; import java.text.NumberFormat; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartFrame; 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.data.general.DefaultPieDataset; import org.jfree.data.general.PieDataset; /** * @Title: allProductDistribution.java * @Package com.lky.experiment * @Description: 产品评论量分布 * @author lky * @date 2015年11月18日 下午3:50:36 * @version V1.0 */ public class allProductDistribution { public void PieChart(String path) { PieDataset dataset = getDataSet(); JFreeChart chart = ChartFactory.createPieChart3D("产品评论量分布图", dataset, true, true, false); chart.getLegend().setItemFont(new Font("宋体", Font.PLAIN, 12));// 设置图例字体样式 chart.getTitle().setFont(new Font("黑体", Font.CENTER_BASELINE, 20));// 设置标题字体样式 chart.setBackgroundPaint(Color.white);// 设置背景色为白色 PiePlot3D plot = (PiePlot3D) chart.getPlot();// 图样式(饼状图) plot.setLabelFont(new Font("宋体", Font.PLAIN, 14));// 图中标签字体样式 // 图片中显示百分比:默认方式 // plot.setLabelGenerator(new // StandardPieSectionLabelGenerator(StandardPieToolTipGenerator.DEFAULT_TOOLTIP_FORMAT)); // 自定义图片中显示百分比:自定义方式,{0} 表示选项, {1} 表示数值, {2} 表示所占比例 ,小数点后两位 plot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0}:{1}({2})", NumberFormat.getNumberInstance(), new DecimalFormat("0.000%"))); // 自定义图例中显示百分比:自定义方式, {0} 表示选项, {1} 表示数值, {2} 表示所占比例 plot.setLegendLabelGenerator(new StandardPieSectionLabelGenerator("{0}:{1}({2})")); // 指定图片的透明度(0.0-1.0) plot.setForegroundAlpha(1.0f); // 指定显示的饼图上圆形(false)还椭圆形(true) plot.setCircular(true); plot.setBackgroundAlpha(0.5f);// 背景色 透明度 plot.setBackgroundPaint(new Color(255, 255, 204));// 设置柱图背景色(注意,系统取色的时候要使用16位的模式来查看颜色编码,这样比较准确) try { File file = new File(path); ChartUtilities.saveChartAsPNG(file, chart, 640, 480);// 把生成的图保存到文件中 } catch (Exception e) { e.printStackTrace(); } ChartPreview(chart);// 显示生成的图 } /** * * @Title getDataSet * @Description 获取饼图数据 * */ private PieDataset getDataSet() { DefaultPieDataset dataset = new DefaultPieDataset(); dataset.setValue("0-300(条)", new Double(65)); dataset.setValue("300-600(条)", new Double(4)); dataset.setValue("600-900(条)", new Double(3)); dataset.setValue("1200-1500(条)", new Double(2)); dataset.setValue("2700-3000(条)", new Double(1)); dataset.setValue("3000+(条)", new Double(17)); dataset.setValue("0(条)", new Double(19)); return dataset; } /** * @Title ChartPreview * @Description 预览图片 * */ private void ChartPreview(JFreeChart chart) { // ******************************// // * 将生成的报表放到预览窗口中 // ******************************// final ChartFrame preview = new ChartFrame("评论统计信息", chart); preview.addWindowListener(new WindowAdapter() { public void windowClosing(final WindowEvent event) { preview.dispose(); } }); preview.pack(); // 调整预览窗口的大小和位置,适合屏幕,并且居中 Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); preview.setSize(screenSize.width, screenSize.height - 50);// 适合屏幕,50表示把工具栏要考虑在内 Dimension frameSize = preview.getSize(); if (frameSize.height > screenSize.height) { frameSize.height = screenSize.height; } if (frameSize.width > screenSize.width) { frameSize.width = screenSize.width; } preview.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height - 50) / 2); preview.setVisible(true);// 显示报表预览窗口 } public static void main(String args[]) { new allProductDistribution().PieChart("pie.png"); } }
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柱状图
示例代码:
package com.lky.experiment; import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.awt.RenderingHints; import java.awt.Toolkit; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.File; import java.util.ArrayList; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartFrame; 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.labels.StandardCategoryItemLabelGenerator; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; import com.lky.spider.pojos.dateData; /** * @Title: allProductMouthStatistics.java * @Package com.lky.experiment * @Description: 商城手机月统计量 * @author lky * @date 2015年11月18日 下午4:09:57 * @version V1.0 */ public class allProductMouthStatistics { public void mouthBarChart(String year, String path) { CategoryDataset dataset = getMouthCateDataSet(year); JFreeChart chart = ChartFactory.createBarChart3D(year+"年商城手机产品评论量", // 图表标题 "月份", // 目录轴的显示标签 "评论总数", // 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) true, // 是否生成工具 true // 是否生成URL链接 ); chart.getTitle().setFont(new Font("黑体", Font.CENTER_BASELINE, 20));// 设置图标题的字体 chart.getLegend().setItemFont(new Font("宋体", Font.PLAIN, 12));// 设置图例字体 chart.getRenderingHints().put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF); CategoryPlot plot = chart.getCategoryPlot();// 获得图表区域对象 plot.setRangeGridlinesVisible(true); // 设置横虚线可见 plot.setRangeGridlinePaint(Color.gray); // 虚线色彩 plot.setForegroundAlpha(1.0f);// 设置柱的透明度 plot.setBackgroundAlpha(0.5f);// 背景色 透明度 plot.setBackgroundPaint(new Color(255, 255, 204));// 设置柱图背景色(注意,系统取色的时候要使用16位的模式来查看颜色编码,这样比较准确) /** X 轴 设置 **/ Font xfont = new Font("宋体", Font.PLAIN, 12); CategoryAxis domainAxis = plot.getDomainAxis(); domainAxis.setLowerMargin(0.1);// 设置距离图片左端距离此时为10% domainAxis.setUpperMargin(0.1);// 设置距离图片右端距离此时为百分之10 domainAxis.setCategoryLabelPositionOffset(10);// 图表横轴与标签的距离(10像素) domainAxis.setCategoryMargin(0.2);// 横轴标签之间的距离20% domainAxis.setLabelFont(xfont);// X轴标题 domainAxis.setLabelPaint(Color.red);// 标题的颜色 domainAxis.setTickLabelFont(new Font("sans-serif", Font.PLAIN, 11));// X轴数值 domainAxis.setTickLabelPaint(Color.BLUE); // X轴数值的字体颜色 domainAxis.setCategoryLabelPositions(CategoryLabelPositions.STANDARD); // 横轴上的label斜显示 plot.setDomainAxis(domainAxis); /** X 轴 **/ /** Y 轴 设置 **/ ValueAxis rangeAxis = plot.getRangeAxis(); rangeAxis.setUpperMargin(0.1);// 设置最高的一个柱与图片顶端的距离(最高柱的10%) rangeAxis.setLabelFont(xfont);// Y轴标题 rangeAxis.setLabelPaint(Color.red);// Y轴标题的颜色 rangeAxis.setTickLabelFont(new Font("sans-serif", Font.PLAIN, 11));// Y轴数值 plot.setRangeAxis(rangeAxis); /** Y 轴 设置 **/ /** 使用自定义的渲染器 **/ CustomRenderer renderer = new CustomRenderer(); renderer.setMaximumBarWidth(0.6);// 设置柱子宽度 renderer.setMinimumBarLength(0.2);// 设置柱子高度 renderer.setBaseOutlinePaint(Color.BLACK);// 设置柱子边框颜色 renderer.setDrawBarOutline(true);// 设置柱子边框可见 renderer.setItemMargin(0.2);// 设置每个地区所包含的平行柱的之间距离 // 显示每个柱的数值,并修改该数值的字体属性 renderer.setIncludeBaseInRange(true); renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator()); renderer.setBaseItemLabelsVisible(true); plot.setRenderer(renderer);// 设置使用的渲染 /** 使用自定义的渲染器 **/ try { File file = new File(path); ChartUtilities.saveChartAsPNG(file, chart, 400, 300);// 把报表保存为文件 } catch (Exception e) { String s = e.getLocalizedMessage(); s = e.getMessage(); System.out.println(s); } ChartPreview(chart); } private CategoryDataset getMouthCateDataSet(String year) { DefaultCategoryDataset dataset = new DefaultCategoryDataset(); ArrayList<dateData> result = statistics.allMouthStatistics(year); for (dateData ss : result) { Integer count = ss.getCount(); String ym = ss.getSdate(); if (ym.substring(5, 7).equals("11")) { continue; } dataset.addValue(count, ym, ym); // System.out.println(count + "-------->" + ym); } return dataset; } /** * @Title ChartPreview * @Description 预览图片 * */ private void ChartPreview(JFreeChart chart) { // ******************************// // * 将生成的报表放到预览窗口中 // ******************************// final ChartFrame preview = new ChartFrame("评论统计信息", chart); preview.addWindowListener(new WindowAdapter() { public void windowClosing(final WindowEvent event) { preview.dispose(); } }); preview.pack(); // 调整预览窗口的大小和位置,适合屏幕,并且居中 Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); preview.setSize(screenSize.width, screenSize.height - 50);// 适合屏幕,50表示把工具栏要考虑在内 Dimension frameSize = preview.getSize(); if (frameSize.height > screenSize.height) { frameSize.height = screenSize.height; } if (frameSize.width > screenSize.width) { frameSize.width = screenSize.width; } preview.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height - 50) / 2); preview.setVisible(true);// 显示报表预览窗口 } public static void main(String args[]) { new allProductMouthStatistics().mouthBarChart("2015", "2015.png"); } }
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折线图
示例代码:
package com.lky.experiment; import java.awt.Color; import java.awt.Dimension; import java.awt.Font; import java.awt.Toolkit; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.io.File; import java.util.ArrayList; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartFrame; 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.XYItemRenderer; import org.jfree.chart.renderer.xy.XYSplineRenderer; import org.jfree.data.xy.XYDataset; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import com.lky.spider.pojos.dateData; public class hourShow { /** * @Title ChartPreview * @Description 预览图片 * */ private void ChartPreview(JFreeChart chart) { // ******************************// // * 将生成的报表放到预览窗口中 // ******************************// final ChartFrame preview = new ChartFrame("评论量", chart); preview.addWindowListener(new WindowAdapter() { public void windowClosing(final WindowEvent event) { preview.dispose(); } }); preview.pack(); // 调整预览窗口的大小和位置,适合屏幕,并且居中 Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); preview.setSize(screenSize.width, screenSize.height - 50);// 适合屏幕,50表示把工具栏要考虑在内 Dimension frameSize = preview.getSize(); if (frameSize.height > screenSize.height) { frameSize.height = screenSize.height; } if (frameSize.width > screenSize.width) { frameSize.width = screenSize.width; } preview.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height - 50) / 2); // 显示报表预览窗口 preview.setVisible(true); } /** * @Title: XYSplineRendererGo * @Description: 获取一段时间内一定时间粒度商城手机产品的评论量 * @param tstart 起始时间 * @param tend 结束时间 * @param size 时间粒度 * @param path 图片路径 */ public void XYSplineRendererHour(String tstart, String tend, int size, String path) { XYDataset dataset = getXYDataset(tstart, tend, size); JFreeChart chart = ChartFactory.createXYLineChart("("+tstart+":"+tend+")商城手机产品评论量", "小时", "评论量", dataset, PlotOrientation.VERTICAL, true, false, false); chart.getTitle().setFont(new Font("黑体", Font.CENTER_BASELINE, 20));// 设置图标题的字体 chart.getLegend().setItemFont(new Font("宋体", Font.PLAIN, 12));// 设置图例字体 XYPlot plot = (XYPlot) chart.getPlot(); plot.setRangeGridlinesVisible(true); // 设置横虚线可见 plot.setRangeGridlinePaint(Color.gray); // 虚线色彩 plot.setForegroundAlpha(1.0f);// 设置柱的透明度 plot.setBackgroundAlpha(0.5f);// 背景色 透明度 plot.setBackgroundPaint(new Color(255, 255, 204));// 设置柱图背景色(注意,系统取色的时候要使用16位的模式来查看颜色编码,这样比较准确) Font xfont = new Font("宋体", Font.PLAIN, 12); ValueAxis domainAxis = plot.getDomainAxis(); domainAxis.setLowerMargin(0.1);// 设置距离图片左端距离此时为10% domainAxis.setUpperMargin(0.1);// 设置距离图片右端距离此时为百分之10 domainAxis.setLabelFont(xfont);// X轴标题 domainAxis.setLabelPaint(Color.green);// X轴标题颜色 domainAxis.setTickLabelFont(xfont);// X轴数值字体 domainAxis.setTickLabelPaint(Color.BLUE); // X轴数值颜色 NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis(); rangeAxis.setUpperMargin(0.1);// 设置最高的一个柱与图片顶端的距离(最高柱的10%) rangeAxis.setLabelFont(xfont);// Y轴标题 rangeAxis.setLabelPaint(Color.green); // Y轴标题颜色 rangeAxis.setTickLabelFont(xfont);// Y轴数值字体 rangeAxis.setTickLabelPaint(Color.BLUE);// Y轴数值颜色 // NumberFormat numberformat = new DecimalFormat("00%"); // rangeAxis.setNumberFormatOverride(numberformat);// 设置y轴以百分比方式显示 // 平滑曲线 XYItemRenderer renderer = new XYSplineRenderer(); renderer.setBaseItemLabelPaint(Color.black);// 字体为黑色 renderer.setBaseItemLabelsVisible(true); renderer.setBaseItemLabelFont(new Font("宋体", Font.PLAIN, 12)); plot.setRenderer(renderer); try { File file = new File(path); ChartUtilities.saveChartAsPNG(file, chart, 400, 300);// 把报表保存为文件 } catch (Exception e) { String s = e.getLocalizedMessage(); s = e.getMessage(); System.out.println(s); } ChartPreview(chart); } private XYSeriesCollection getXYDataset(String tstart, String tend, int size) { XYSeries dataSeries = new XYSeries("粒度"+size+"(h)"); ArrayList<dateData> result = statistics.allHourStatistics(tstart, tend); // for (dateData ss : result) { // System.out.println(ss.getSdate()); // } int[] _count = new int[20000]; int index = -1; for (dateData ss : result) { _count[(++index) / size] += ss.getCount(); } for (int i = 0; i <= index / size; ++i) { dataSeries.add(i + 1, _count[i]); } XYSeriesCollection xyDataset = new XYSeriesCollection(); xyDataset.addSeries(dataSeries); return xyDataset; } public static void main(String args[]){ // new hourShow().XYSplineRendererGo("2015-11-5","2015-11-6",2, "xy.png"); new hourShow().XYSplineRendererHour("2014-11-5","2014-11-6",2, "xy1.png"); } }
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时间序列图
示例代码:
package com.lky.experiment; import java.awt.Font; import java.text.SimpleDateFormat; import java.util.ArrayList; 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.ValueAxis; import org.jfree.chart.plot.XYPlot; 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 com.lky.spider.pojos.dateData; import com.lky.spider.utils.TimeUtil; @SuppressWarnings("deprecation") public class dayShow { private ChartPanel frame1; private String sid; public dayShow(String sid ,String title) { this.sid=sid; XYDataset xydataset = createDataset();//数据集 JFreeChart jfreechart = ChartFactory.createTimeSeriesChart(title+"---日统计图", "日期", "数量", xydataset, true, true, true); XYPlot xyplot = (XYPlot) jfreechart.getPlot(); DateAxis dateaxis = (DateAxis) xyplot.getDomainAxis(); dateaxis.setDateFormatOverride(new SimpleDateFormat("yyyy-MM")); dateaxis.setLabelFont(new Font("黑体", Font.BOLD, 14)); // 水平底部标题 dateaxis.setTickLabelFont(new Font("宋体", Font.BOLD, 12)); // 垂直标题 ValueAxis rangeAxis = xyplot.getRangeAxis();// 获取y轴 rangeAxis.setLabelFont(new Font("黑体", Font.BOLD, 15)); jfreechart.getLegend().setItemFont(new Font("黑体", Font.BOLD, 15)); jfreechart.getTitle().setFont(new Font("宋体", Font.BOLD, 15));// 设置标题字体 frame1 = new ChartPanel(jfreechart, true); } private XYDataset createDataset() { // 这个数据集有点多,但都不难理解 ArrayList<String> cleanList = statistics.cleanData(sid); TimeSeries timeseries1 = new TimeSeries("每天的评论数量", org.jfree.data.time.Day.class); ArrayList<dateData> info = statistics.getDayStatistics(cleanList); timeseries1.add(new Day(TimeUtil.ymdTDate(info.get(0).getSdate())), info.get(0).getCount()); String nextday = TimeUtil.nextDay(info.get(0).getSdate()); for (int i = 1; i < info.size();) { if (nextday.equals(info.get(i).getSdate())) { // 过滤评论数大于500的 if (info.get(i).getCount() > 500) { i++; continue; } timeseries1.add(new Day(TimeUtil.ymdTDate(nextday)), info.get(i).getCount()); i++; } else { timeseries1.add(new Day(TimeUtil.ymdTDate(nextday)), 0); } nextday = TimeUtil.nextDay(nextday); } TimeSeriesCollection timeseriescollection = new TimeSeriesCollection(); timeseriescollection.addSeries(timeseries1); return timeseriescollection; } public ChartPanel getChartPanel() { return frame1; } }
//获取某一个商品的日次评论量 public static void getDayShow(String sid,String title){ JFrame frame = new JFrame("日统计图"); frame.setLayout(new GridLayout(2, 2, 10, 10)); frame.add(new dayShow(sid,title).getChartPanel()); // 添加折线图 frame.setBounds(50, 50, 800, 600); frame.setVisible(true); frame.setLocationRelativeTo(null); frame.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE); }
作者:奋斗的珞珞
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