JFreeChart统计图

package com.jmyz.utils; import java.awt.Color; import java.awt.Font; import java.awt.GradientPaint; import java.io.File; import java.io.IOException; import javax.swing.JPanel; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.ChartUtilities; import org.jfree.chart.JFreeChart; import org.jfree.chart.axis.NumberAxis; import org.jfree.chart.axis.NumberTickUnit; import org.jfree.chart.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.title.TextTitle; import org.jfree.data.category.CategoryDataset; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.data.time.Day; import org.jfree.data.time.TimeSeries; import org.jfree.data.time.TimeSeriesCollection; import org.jfree.data.time.TimeSeriesDataItem; import org.jfree.ui.ApplicationFrame; import org.jfree.ui.RefineryUtilities; public class LineImages extends ApplicationFrame { private static final long serialVersionUID = -7167492993366589122L; public LineImages(String title) { super(title); setContentPane(createLinePanel()); } public static CategoryDataset createLineDataset() { DefaultCategoryDataset dataset = new DefaultCategoryDataset(); dataset.addValue(100, "row1", "2001-01-01"); dataset.addValue(200, "row1", "2001-01-05"); dataset.addValue(300, "row1", "2001-01-12"); dataset.addValue(500, "row1", "2001-01-24"); dataset.addValue(600, "row1", "2001-02-24"); dataset.addValue(700, "row1", "2001-03-24"); dataset.addValue(900, "row1", "2001-04-24"); dataset.addValue(2000, "row1", "2001-05-24"); return dataset; } public static JFreeChart createLineChart(CategoryDataset dataset) { // 定义图表对象 JFreeChart chart = ChartFactory.createLineChart("曲线走势图", "时间", "点击率", dataset, PlotOrientation.VERTICAL, false, false, false); // 获得图表显示对象 chart.setBackgroundPaint(new GradientPaint(0, 0, Color.white, 1000, 0, Color.red)); chart.setTitle(new TextTitle("车型曲线走势图", new Font("隶书", Font.ITALIC, 15))); CategoryPlot plot = (CategoryPlot) chart.getPlot(); NumberAxis numberAxis = (NumberAxis) plot.getRangeAxis(); numberAxis .setAutoTickUnitSelection(false); double unit=100d;//刻度的长度 NumberTickUnit ntu= new NumberTickUnit(unit); numberAxis.setTickUnit(ntu); // DateAxis xAxis = new DateAxis(); // xAxis.setRange(new Date(), new Date()); // xAxis.setAutoTickUnitSelection(false); // xAxis.setTickUnit(new DateTickUnit(DateTickUnit.MINUTE,20)); // 设置图表标签字体 plot.setNoDataMessage("No data available"); plot.setForegroundAlpha(0.8f); return chart; } public static JPanel createLinePanel() { JFreeChart chart = createLineChart(createLineDataset()); return new ChartPanel(chart); } public static void getLineImage() { // 曲线图标题 String title = "趋势分析"; // 曲线图X轴提示 String domain = "月份走势"; // 曲线图Y轴提示 String range = "应收余额"; // 曲线图自标题 String subtitleStr = "数据分析"; // 创建时间数据源 // 每一个TimeSeries在图上是一条曲线 TimeSeries ts = new TimeSeries("驿站"); for (int i = 1999; i < 2005; i++) { for (int mon = 0; mon < 12; mon++) { ts.add(new TimeSeriesDataItem(new Day(1, mon + 1, i), new Double(500 + Math.random() * 100))); } } // 时间曲线数据集合 TimeSeriesCollection dataset = new TimeSeriesCollection(); dataset.addSeries(ts); // 时间曲线元素 JFreeChart chart = ChartFactory.createTimeSeriesChart(title, domain, range, dataset, true, true, false); TextTitle subtitle = new TextTitle(subtitleStr, new Font("黑体", Font.BOLD, 12)); chart.addSubtitle(subtitle); chart.setTitle(new TextTitle(title, new Font("隶书", Font.ITALIC, 15))); chart.setBackgroundPaint(new GradientPaint(0, 0, Color.white, 0, 1000, Color.red)); String fileName = "d:/line.jpeg"; try { ChartUtilities.saveChartAsJPEG(new File(fileName), 1, chart, 800, 600); // BufferedImage buffer = chart.createBufferedImage(800, 600); // OutputStream stream = null; // ChartUtilities.writeBufferedImageAsJPEG(stream, buffer); } catch (IOException e) { System.out.print("....Cant't Create image File"); } } public static void main(String[] args) { LineImages line = new LineImages("公司"); line.pack(); RefineryUtilities.centerFrameOnScreen(line); line.setVisible(true); getLineImage(); } }