jfreechart实现java画图.doc

package com.dsc.utils;import java.awt.Color;import java.awt.Font;import java.awt.RenderingHints;import java.io.File;import java.io.IOException;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.labels.StandardXYItemLabelGenerator;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;public class JfreeChartUtils_Line /* * param pictureTitle 图表标题 * param xTitle x轴标题 * param yTitle y轴标题 * param dataset 数据集 * param width 宽度 * param height 高度 * return 图片的路径 */ public String createLinePicture(String pictureTitle , String xTitle , String yTitle , XYSeriesCollection dataset , int width , int height) String path = ; JFreeChart chart = ChartFactory.createXYLineChart(pictureTitle, yTitle, xTitle, dataset, PlotOrientation.VERTICAL, true, true, false); chart.setBackgroundPaint(Color.LIGHT_GRAY); / 设置图表属性 / 取得CategoryPlot，设定Plot参数 XYPlot plot = chart.getXYPlot(); /设置网格背景颜色 plot.setBackgroundPaint(Color.white); /设置网格竖线颜色 plot.setDomainGridlinePaint(Color.pink); /设置网格横线颜色 plot.setRangeGridlinePaint(Color.pink); / 设置是否显示垂直网格线 plot.setDomainGridlinesVisible(true); / 设置是否显示水平网格线 plot.setRangeGridlinesVisible(true); XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer)plot.getRenderer(); /设置曲线图与xy轴的距离 plot.setAxisOffset(new RectangleInsets(0D, 0D, 0D, 10D); /设置曲线是否显示数据点 xylineandshaperenderer.setItemLabelGenerator(new StandardXYItemLabelGenerator(); xylineandshaperenderer.setBaseShapesVisible(true); /是否显示数据点的值 xylineandshaperenderer.setBaseItemLabelsVisible(true); /X轴整数显示 NumberAxis x = (NumberAxis)plot.getDomainAxis(); x.setStandardTickUnits(NumberAxis.createIntegerTickUnits(); /Y轴整数显示 NumberAxis y = (NumberAxis)plot.getDomainAxis(); y.setStandardTickUnits(NumberAxis.createIntegerTickUnits(); ValueAxis domainAxis = plot.getDomainAxis(); domainAxis.setTickLabelFont(new Font(黑体, Font.BOLD, 12); / 设置Y轴的标题文字 domainAxis.setLabelFont(new Font(黑体, Font.BOLD, 18); domainAxis.setUpperMargin(0.1); ValueAxis rAxis = plot.getRangeAxis(); rAxis.setUpperMargin(0.15); rAxis.setLowerMargin(0.15); chart.getRenderingHints().put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF); / 设置标题字体 TextTitle textTitle = chart.getTitle(); textTitle.setFont(new Font(黑体, Font.PLAIN, 20); / 设置Y轴坐标上的文字 rAxis.setTickLabelFont(new Font(黑体, Font.BOLD, 12); / 设置Y轴的标题文字 rAxis.setLabelFont(new Font(黑体, Font.BOLD, 18);/ 图表底部乱码 chart.getLegend().setItemFont(new Font(黑体, Font.BOLD, 18); / 向磁盘输出图片文件 path = f:/line.jpg; File file = new File(path); try ChartUtilities.saveChartAsJPEG(file, chart, width, height); catch (IOException e) / TODO Auto-generated catch block e.printStackTrace(); finally return path; public static XYSeriesCollection createDataXYSet() XYSeriesCollection seriesCollection = new XYSeriesCollection(); XYSeries series1 = new XYSeries(笔记本); XYSeries series2 = new XYSeries(数码相机); XYSeries series3 = new XYSeries(手机); series1.add(1, 70); series1.add(2, 40); series1.add(3, 30); series1.add(4, 30); series1.add(5, 20); series1.add(6, 30); series2.add(1, 10); series2.add(2, 50); series2.add(3, 40); series2.add(4, 47); series2.add(5, 35); series2.add(6, 52); series3.add(1, 44); series3.add(2, 38); series3.add(3, 25); series3.add(4, 29); series3.add(5, 23); series3.add(6, 83); seriesCollection.addSeries(series1); seriesCollection.addSeries(series2); seriesCollection.addSeries(series3); return seriesCollection; public static void main(String args) JfreeChartUtils_Line chart = new JfreeChartUtils_Line(); chart.createLinePicture(电子产品销售图, 产品数据(单位/万), 统计月份, chart.createDataXYSet(), 700, 490); package com.dsc.utils;import java.awt.Color;import java.awt.Font;import java.awt.GradientPaint;import java.awt.RenderingHints;import java.io.File;import java.io.IOException;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.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.BarRenderer;import org.jfree.chart.renderer.category.CategoryItemRenderer;import org.jfree.chart.title.TextTitle;import org.jfree.data.category.CategoryDataset;import org.jfree.data.category.DefaultCategoryDataset;public class JfreeChartUtils /* * 根据指定的数据集生成一张柱形图 * param pictureTitle 图表标题 * param xTitle x轴标题 * param yTitle y轴标题 * param dataset 数据集 * param width 图片宽度 * param height 图片高度 * return 返回图片的路径 */ public String createHistogram(String pictureTitle , String xTitle , String yTitle , CategoryDataset dataset , int width , int height) /保存图片的绝对路径 String path = ; JFreeChart chart = ChartFactory.createBarChart(pictureTitle, yTitle, xTitle, dataset, PlotOrientation.VERTICAL, /图表显示方向（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 false);/是否生成URL链接 /设置整个图表的背景色 chart.setBackgroundPaint(Color.LIGHT_GRAY); /获得图表区域对象 CategoryPlot plot = chart.getCategoryPlot(); / 设置图表的显示部分的背景色 plot.setBackgroundPaint(Color.PINK); / 设置垂直网格线颜色 plot.setDomainGridlinePaint(Color.black); / 设置是否显示垂直网格线 plot.setDomainGridlinesVisible(true); / 设置水平网格线颜色 plot.setRangeGridlinePaint(Color.yellow); / 设置是否显示水平网格线 plot.setRangeGridlinesVisible(true); /取得NumberAxis，将数据转换为整数形式 NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis(); rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits(); / 设置是否在柱状图的状态条上显示边框 BarRenderer render = (BarRenderer) plot.getRenderer(); render.setItemMargin(0.1); / 设置柱状图的渐变色 CategoryItemRenderer renderer = (CategoryItemRenderer) plot.getRenderer(); GradientPaint gp0 = new GradientPaint(0.0f, 0.0f, new Color(255, 200, 80), 0.0f, 0.0f, new Color(255, 255, 40); GradientPaint gp1 = new GradientPaint(0.0f, 0.0f, new Color(50, 255, 50), 0.0f, 0.0f, new Color(100, 255, 100); GradientPaint gp2 = new GradientPaint(0.0f, 0.0f, Color.red, 0.0f, 0.0f, new Color(255, 100, 100); GradientPaint gp3 = new GradientPaint(0.0f, 0.0f, new Color(108, 108, 255), 0.0f, 0.0f, new Color(150, 150, 200); renderer.setSeriesPaint(0, gp0); renderer.setSeriesPaint(1, gp1); renderer.setSeriesPaint(2, gp2); renderer.setSeriesPaint(3, gp3); /设置X轴标题的倾斜程度 CategoryAxis domainAxis = plot.getDomainAxis(); domainAxis.setCategoryLabelPositions(CategoryLabelPositions .createUpRotationLabelPositions(1.57); / 设置柱状体与图片边框的左右间距 domainAxis.setLowerMargin(0.01); domainAxis.setUpperMargin(0.01); / 设置柱状体与图片边框的上下间距 ValueAxis rAxis = plot.getRangeAxis(); rAxis.setUpperMargin(0.15); rAxis.setLowerMargin(0.15); / 设置每一组柱状体之间的间隔 render.setItemMargin(0.0); / 设置消除字体的锯齿渲染（解决中文问题） chart.getRenderingHints().put(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_OFF); /设置X轴上类型子图片的字体类型 chart.getLegend().setItemFont(new Font(黑体, Font.BOLD, 18); / 设置标题字体 TextTitle textTitle = chart.getTitle(); textTitle.setFont(new Font(黑体, Font.PLAIN, 20); / 设置X轴坐标上的文字 domainAxis.setTickLabelFont(new Font(黑体, Font.PLAIN, 18); / 设置X轴的标题文字 domainAxis.setLabelFont(new Font(黑体, Font.PLAIN, 18); / 设置Y轴坐标上的文字 rAxis.setTickLabelFont(new Font(黑体, Font.PLAIN, 18); / 设置Y轴的标题文字 rAxis.setLabelFont(new Font(黑体, Font.PLAIN, 18); path = f:/test.png; File file = new File(path); try ChartUtilities.saveChartAsPNG(file, chart, width, height); catch (IOException e) / TODO Auto-generated catch block e.printStackTrace(); return path; private CategoryDataset createCategoryDataset() String str1 = 笔记本; String str2 = 台式机; String str3 = 数码相机; String str4 = 手机; String date1 = 1月; String date2 = 2月; String date3 = 3月; Str