JFreeChart最佳实践：柱状图

时间  2021-07-14

这几天由于客观因素(天冷和停电)和主观因素(项目吃紧，每天都加班到9点，回来也就不想搞了)。就这样耽搁了好几天的时间了！不过偶然的机会在网上换到了一篇整理好的API，所以整理常用的柱状图就容易多了。里面的封装方法太多了，一般是很难记住的.很多都要实践了才知道其作用，这里就直接上代码了。也好之后备用巩固学习。

package com.huawei.jfreechart;

 

     
 
  1. importjava.awt.Color; 
    2.  
 
  2.  importjava.awt.Font;  
    3.  
 
  3.  importorg.jfree.chart.ChartFactory;  
    4.  
 
  4.  importorg.jfree.chart.ChartFrame;  
    5.  
 
  5.  importorg.jfree.chart.JFreeChart;  
    6.  
 
  6.  importorg.jfree.chart.axis.CategoryAxis;  
    7.  
 
  7.  importorg.jfree.chart.axis.CategoryLabelPositions;  
    8.  
 
  8.  importorg.jfree.chart.axis.NumberAxis;  
    9.  
 
  9.  importorg.jfree.chart.axis.NumberTickUnit;  
    10.  
 
  10.  importorg.jfree.chart.plot.CategoryPlot;  
    11.  
 
  11.  importorg.jfree.chart.plot.PlotOrientation;  
    12.  
 
  12.  importorg.jfree.chart.title.TextTitle;  
    13.  
 
  13.  importorg.jfree.data.category.CategoryDataset;  
    14.  
 
  14.  importorg.jfree.data.category.DefaultCategoryDataset;  
    15.  
 
  15.  /**  
    16.  
 
  16. *@name何枫 
    17.  
 
  17. *@date2010-12-17 
    18.  
 
  18. *@actioncreateBarChart3DTest.java 
    19.  
 
  19. *@time下午10:35:52 
    20.  
 
  20. *@package_namecom.huawei.jfreechart 
    21.  
 
  21. *@project_namejfreechartTest 
    22.  
 
  22. */
    23.  
 
  23.  publicclasscreateBarChart3DTest{  
    24.  
 
  24.  privatestaticCategoryDatasetgetDataSet(){  
    25.  
 
    26.  
 
  26.  DefaultCategoryDatasetdataset=newDefaultCategoryDataset();  
    27.  
 
    28.  
 
  28.  dataset.addValue(200,"计划","清华大学");  
    29.  
 
  29.  dataset.addValue(400,"实报","清华大学");  
    30.  
 
    31.  
 
  31.  dataset.addValue(360,"计划","天津大学");  
    32.  
 
  32.  dataset.addValue(520,"实报","天津大学");  
    33.  
 
    34.  
 
  34.  dataset.addValue(100,"计划","北京大学");  
    35.  
 
  35.  dataset.addValue(150,"实报","北京大学");  
    36.  
 
    37.  
 
  37.  dataset.addValue(280,"计划","复旦大学");  
    38.  
 
  38.  dataset.addValue(300,"实报","复旦大学");  
    39.  
 
  39.  returndataset;  
    40.  
 
  40. } 
    41.  
 
  41.  publicstaticvoidmain(String[]args){  
    42.  
 
  42. CategoryDatasetdataset=getDataSet(); 
    43.  
 
  43.  JFreeChartchart=ChartFactory.createBarChart3D("水果产量图","水果产品","销售数量",dataset,PlotOrientation.VERTICAL,true,true,true);  
    44.  
 
  44.  ChartFrameframe=newChartFrame("水果产量图",chart,true);  
    45.  
 
  45.  //自定义设定背景色  
    46.  
 
  46.  //chart.setBackgroundPaint(Color.getHSBColor(23,192,223));  
    47.  
 
  47. chart.setBackgroundPaint(Color.WHITE); 
    48.  
 
  48.  //获得plot：3dBar为CategoryPlot  
    49.  
 
  49. CategoryPlotcategoryPlot=chart.getCategoryPlot(); 
    50.  
 
  50.  //设定图表数据显示部分背景色  
    51.  
 
  51. categoryPlot.setBackgroundPaint(Color.BLACK); 
    52.  
 
  52.  //横坐标网格线  
    53.  
 
  53. categoryPlot.setDomainGridlinePaint(Color.RED); 
    54.  
 
  54.  //设置网格线可见  
    55.  
 
  55.  categoryPlot.setDomainGridlinesVisible(true);  
    56.  
 
  56.  //纵坐标网格线  
    57.  
 
  57. categoryPlot.setRangeGridlinePaint(Color.RED); 
    58.  
 
  58.  //重要的类，负责生成各种效果  
    59.  
 
  59.  //BarRenderer3Drenderer=(BarRenderer3D)categoryPlot.getRenderer();  
    60.  
 
  60.  //获取纵坐标  
    61.  
 
  61. NumberAxisnumberaxis=(NumberAxis)categoryPlot.getRangeAxis(); 
    62.  
 
  62.  //设置纵坐标的标题字体和大小  
    63.  
 
  63.  numberaxis.setLabelFont(newFont("黑体",Font.CENTER_BASELINE,24));  
    64.  
 
  64.  //设置丛坐标的坐标值的字体颜色  
    65.  
 
  65. numberaxis.setLabelPaint(Color.BLACK); 
    66.  
 
  66.  //设置丛坐标的坐标轴标尺颜色  
    67.  
 
  67. numberaxis.setTickLabelPaint(Color.RED); 
    68.  
 
  68.  //坐标轴标尺颜色  
    69.  
 
  69. numberaxis.setTickMarkPaint(Color.BLUE); 
    70.  
 
  70.  //丛坐标的默认间距值  
    71.  
 
  71.  //numberaxis.setAutoTickUnitSelection(true);  
    72.  
 
  72.  //设置丛坐标间距值  
    73.  
 
  73.  numberaxis.setAutoTickUnitSelection(false);  
    74.  
 
  74.  numberaxis.setTickUnit(newNumberTickUnit(150));  
    75.  
 
  75.  //获取横坐标  
    76.  
 
  76. CategoryAxisdomainAxis=categoryPlot.getDomainAxis(); 
    77.  
 
  77.  //设置横坐标的标题字体和大小  
    78.  
 
  78.  domainAxis.setLabelFont(newFont("宋体",Font.PLAIN,13));  
    79.  
 
  79.  //设置横坐标的坐标值的字体颜色  
    80.  
 
  80. domainAxis.setTickLabelPaint(Color.RED); 
    81.  
 
  81.  //设置横坐标的坐标值的字体  
    82.  
 
  82.  domainAxis.setTickLabelFont(newFont("宋体",Font.PLAIN,30));  
    83.  
 
  83.  //设置横坐标的显示  
    84.  
 
  84.  domainAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(0.4));  
    85.  
 
  85.  //这句代码解决了底部汉字乱码的问题  
    86.  
 
  86.  chart.getLegend().setItemFont(newFont("黑体",0,16));  
    87.  
 
  87.  //设置图例标题  
    88.  
 
  88.  Fontfont=newjava.awt.Font("黑体",java.awt.Font.CENTER_BASELINE,50);  
    89.  
 
  89.  TextTitletitle=newTextTitle("项目状态分布");  
    90.  
 
  90. title.getBackgroundPaint(); 
    91.  
 
  91. title.setFont(font); 
    92.  
 
  92.  //设置标题的字体颜色  
    93.  
 
  93. title.setPaint(Color.RED); 
    94.  
 
  94. chart.setTitle(title); 
    95.  
 
  95. frame.pack(); 
    96.  
 
  96.  frame.setVisible(true);  
    97.  
 
    98.  
 
  98. } 
    99.  
 
    100.  
 
  100. }
    101.  

 

 

原文链接：http://hefeng1987-net-163-com.iteye.com/blog/846041

                




                

            

        

    










    

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