HDC调试需求开发（15万预算）,能者速来！>>> package com.code.jtlAnalyzeExcel; import java.awt.Color; import java.awt.Font; import java.io.FileOutputStream; import java.text.SimpleDateFormat; 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.plot.CategoryPlot; import org.jfree.chart.plot.PlotOrientation; import org.jfree.data.category.DefaultCategoryDataset; import org.jfree.ui.ApplicationFrame; public class LineCharts extends ApplicationFrame { private static final long serialVersionUID = 1L; public LineCharts(String s , ExcelObject excel) { super(s); setContentPane(createDemoLine(excel)); } // 生成显示图表的面板 public static JPanel createDemoLine(ExcelObject excel) { JFreeChart jfreechart = createChart(createDataset(excel)); return new ChartPanel(jfreechart); } // 生成图表主对象JFreeChart public static JFreeChart createChart(DefaultCategoryDataset linedataset) { // 定义图表对象 JFreeChart chart = ChartFactory.createLineChart("Load Test", //折线图名称 "Thread", // 横坐标名称 "Value", // 纵坐标名称 linedataset, // 数据 PlotOrientation.VERTICAL, // 水平显示图像 true, // include legend false, // tooltips false // urls ); // chart.setBackgroundPaint(Color.red); CategoryPlot plot = chart.getCategoryPlot(); // plot.setDomainGridlinePaint(Color.red); plot.setDomainGridlinesVisible(true); // 5,设置水平网格线颜色 // plot.setRangeGridlinePaint(Color.blue); // 6,设置是否显示水平网格线 plot.setRangeGridlinesVisible(true); plot.setRangeGridlinesVisible(true); //是否显示格子线 //plot.setBackgroundAlpha(f); //设置背景透明度 NumberAxis rangeAxis = (NumberAxis)plot.getRangeAxis(); rangeAxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); rangeAxis.setAutoRangeIncludesZero(true); rangeAxis.setUpperMargin(0.20); rangeAxis.setLabelAngle(Math.PI / 2.0); rangeAxis.setAutoRange(false); FileOutputStream fos_jpg=null; try{ fos_jpg=new FileOutputStream("D:\\ok_bing.jpg"); /* * 第二个参数如果为100，会报异常： * java.lang.IllegalArgumentException: The 'quality' must be in the range 0.0f to 1.0f * 限制quality必须小于等于1,把100改成 0.1f。 */ // ChartUtilities.writeChartAsJPEG(fos_jpg, 0.99f, chart, 600, 300, null); ChartUtilities.writeChartAsJPEG(fos_jpg, chart, 900, 400); }catch(Exception e){ System.out.println("[e]"+e); }finally{ try{ fos_jpg.close(); }catch(Exception e){ } } return chart; } // 生成数据 public static DefaultCategoryDataset createDataset(ExcelObject excel) { DefaultCategoryDataset linedataset = new DefaultCategoryDataset(); for (int i=0; i <excel.getThreadNum(); i++) { linedataset.addValue(excel.getThroughput()[i], "throughput", excel.getThread()[i]); linedataset.addValue(excel.getAverage()[i], "average", excel.getThread()[i]); linedataset.addValue(excel.getError()[i], "error", excel.getThread()[i]); } return linedataset; } }