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使用JFreeChart生成报表

2017-10-09 13:42  lc_java  阅读(492)  评论(0编辑  收藏  举报

1.JFreeChart简介
    JFreeChart是JAVA平台上的一个开放的图表绘制类库。它完全使用JAVA语言编写,是为applications,servlets以及JSP等使用所设计。
    JFreeChart可生成饼图(pie charts)、柱状图(bar charts)、散点图(scatter plots)、时序图(time series)、甘特图(Gantt charts)等等多种图表,并且可以产生PNG和JPEG格式的输出,还可以与PDF和EXCEL关联。

2.JFreeChart的使用
    1).加入jar包
       jcommon-1.0.13.jar
       jfreechart-1.0.10.jar(不会上传,嗯,,用的话自己去搜,或者找我要)

   

  2)创建DefaultPieDataSet对象,用来保存图表中要显示的数据
   

 DefaultPieDataSet dataSet = new DefaultPieDataSet();
    dataSet.setValue("男生",20);
    dataSet.setValue("女生",50); 

   3).创建图表数据对应的JFreeChart对象

JFreeChart chart = ChartFactory.createPieChart3D("男女比例图",dataSet);

   4).将图表数据写入文件

File file = new File("pie.jpg");
ChartUtilities.saveChartAsJPEG(file,chart,500,300);

   5).修饰:
     ①.设置“标题”部分字体、风格、字号

chart.getTitle().setFont(new Font("隶书",Font.BOLD,50));

  ②.设置“图例”部分信息"字体、风格、字号

chart.getLegend().setItemFont(new Font("宋体",Font.PLAIN,20));

  ③.通过PiePlot对象设置绘图区信息

//获取代表当前图表绘图区的PiePlot对象
PiePlot plot = (PiePlot)chart.getPlot();
//设置标签字体、风格、字号
plot.setLabelFont(new Font("微软雅黑",Font.ITALIC,15));
//设置前景色半透明
plot.setForegroundAlpha(0.6f);
//设置标签信息格式
plot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0},{1}/{3},{2}"));
/**0:标签本身
*1:当前标签对应的数量
*2:百分比
*3:总数量
*/


   案例1:

//1.
DefaultPieDataset dataSet = new DefaultPieDataset();
dataSet.setValue("华为", 20);
dataSet.setValue("小米", 30);

dataSet.setValue("中兴", 10);
dataSet.setValue("锤子", 10);
//2.
JFreeChart chart = ChartFactory.createPieChart("手机市场占有份额", dataSet, true, true, true);
//设置标题部分
chart.getTitle().setFont(new Font("微软雅黑",Font.ITALIC,50));
//设置图例部分
chart.getLegend().setItemFont(new Font("华文新魏",Font.BOLD,40));
//设置绘图区
//1.获取绘图区对象
PiePlot3D plot = (PiePlot3D)chart.getPlot();
//2.设置绘图区字体
plot.setLabelFont(new Font("华文新魏",Font.BOLD,40));
//3.设置绘图区前景色透明度
plot.setForegroundAlpha(0.6f);
//4.设置标签信息格式
plot.setLabelGenerator(new StandardPieSectionLabelGenerator("{0},{1}/{3},{2}"));

//3.
ChartUtilities.saveChartAsPNG(new File("1.png"), chart, 700, 500);

  利用JFreeChart创建横向柱状报表

        案例2:代码演示:【JFreeChart创建垂直/横向柱状报表】

          1.Java代码

public class BarChart01 {
			public static String getBarChart(HttpSession session){
				//1.构建数据集
				DefaultCategoryDataset dataSet = new DefaultCategoryDataset();
				
				dataSet.addValue(510,"河南", "面食");
				dataSet.addValue(580,"黑龙江", "大米");
				dataSet.addValue(390,"陕西", "泡馍");
				dataSet.addValue(420,"广东", "杂食");
				
				//2.用Chart工厂生成JFreeChar图表
				JFreeChart barChart3D = ChartFactory.createBarChart3D("面食消费统计图","面食", "比例", dataSet, PlotOrientation.VERTICAL, true, true, true);
				
				//生成png图片
				String chartAsPNG =null;
				try {
					chartAsPNG= ServletUtilities.saveChartAsPNG(barChart3D, 700, 500, null, session);
				} catch (IOException e) {
					e.printStackTrace();
				}
				return chartAsPNG;
			}
		}

    2.在web.xml文件中配置如下:

         <servlet>
		<servlet-name>DisplayChart</servlet-name>
		<servlet-class>org.jfree.chart.servlet.DisplayChart</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>DisplayChart</servlet-name>
		<url-pattern>/DisplayChart</url-pattern>
	</servlet-mapping>

  3.index.jsp页面【需要注意的是:参数名必须是filename】

                <body>
		<%
			String fileName = BarChart01.getBarChart(session);
		%>

		<img src="${pageContext.request.contextPath}/DisplayChart?filename=<%=fileName%>">
		</body>

  

=============================================================================================
  1,CategoryDataset 分类数据集引入
  2,利用JFreeChart 创建按颜色分类的水果销售报表

      1).编写Java代码,如下所示:

 public class BarChart03 {
				public static String getBarChart(HttpSession session){
					//1.构建数据集
					double [][] dataSet = new double[][]{{1330},{740},{660},{880}};
					
					String[] rowKeys = new String[]{"苹果","香蕉","橘子","梨子"};
					String[] columnKeys = new String[]{"深圳"};
					
					CategoryDataset dataset = DatasetUtilities.createCategoryDataset(rowKeys, columnKeys, dataSet);
					//2.用Chart工厂生成JFreeChar图表
					JFreeChart barChart3D = ChartFactory.createBarChart3D("面食消费统计图","水果", "数量", dataset, PlotOrientation.VERTICAL, true, true, true);
					//生成png图片
					String chartAsPNG =null;
					try {
						chartAsPNG= ServletUtilities.saveChartAsPNG(barChart3D, 700, 500, null, session);
					} catch (IOException e) {
						e.printStackTrace();
					}
					return chartAsPNG;
				}
			}

  2).在web.xml文件中配置如下:

      

                                <servlet>
					<servlet-name>DisplayChart</servlet-name>
					<servlet-class>org.jfree.chart.servlet.DisplayChart</servlet-class>
				</servlet>
				<servlet-mapping>
					<servlet-name>DisplayChart</servlet-name>
					<url-pattern>/DisplayChart</url-pattern>
				</servlet-mapping>

    3).在index.jsp页面中

<body>
			<%
				String fileName = BarChart03.getBarChart(session);
			%>

			<img src="${pageContext.request.contextPath}/DisplayChart?filename=<%=fileName%>">
			</body>

  3,利用JFreeChart 创建按颜色分类并且按地区分类水果销售报表

1).编写Java代码	
			public class BarChart03 {
				public static String getBarChart(HttpSession session){
					//1.构建数据集
					double [][] dataSet = new double[][]{{1330,770,880,990},{740,760,890,890},{660,760,780,980},{880,790,880,790}};
					
					String[] rowKeys = new String[]{"苹果","香蕉","橘子","梨子"};
					String[] columnKeys = new String[]{"深圳","上海","海南","广东"};
					
					CategoryDataset dataset = DatasetUtilities.createCategoryDataset(rowKeys, columnKeys, dataSet);
					//2.用Chart工厂生成JFreeChar图表
					JFreeChart barChart3D = ChartFactory.createBarChart3D("水果销量统计图","水果", "销量", dataset, PlotOrientation.VERTICAL, true, true, true);
					//生成png图片
					String chartAsPNG =null;
					try {
						chartAsPNG= ServletUtilities.saveChartAsPNG(barChart3D, 700, 500, null, session);
					} catch (IOException e) {
						e.printStackTrace();
					}
					return chartAsPNG;
				}
			}
			
	  2).在web.xml文件中配置如下: 
	  			<servlet>
					<servlet-name>DisplayChart</servlet-name>
					<servlet-class>org.jfree.chart.servlet.DisplayChart</servlet-class>
				</servlet>
				<servlet-mapping>
					<servlet-name>DisplayChart</servlet-name>
					<url-pattern>/DisplayChart</url-pattern>
				</servlet-mapping>
				
	  3).在index.jsp页面中
		   <body>
			<%
				String fileName = BarChart03.getBarChart(session);
			%>

			<img src="${pageContext.request.contextPath}/DisplayChart?filename=<%=fileName%>">
			</body>

  

   4,CategoryPlot ,BarRender3D 引入

   5,利用JFreeChart 创建自定义3D 柱状报表

     1).Java代码编写

public class BarChart03 {
			
			public static String getBarChart(HttpSession session){
				//1.构建数据集
				double [][] dataSet = new double[][]{{1330,770,880,990},{740,760,890,890},{660,760,780,980},{880,790,880,790}};
				
				String[] rowKeys = new String[]{"苹果","香蕉","橘子","梨子"};
				String[] columnKeys = new String[]{"深圳","上海","海南","广东"};
				
				CategoryDataset dataset = DatasetUtilities.createCategoryDataset(rowKeys, columnKeys, dataSet);
				//2.用Chart工厂生成JFreeChar图表
				JFreeChart barChart3D = ChartFactory.createBarChart3D("水果销量统计图","水果", "销量", dataset, PlotOrientation.VERTICAL, true, true, true);
				//这里换成了getCategoryPlot方法!
				CategoryPlot plot = barChart3D.getCategoryPlot();
				
				plot.setBackgroundPaint(Color.white);
				// 设置网格竖线颜色
				plot.setOutlinePaint(Color.pink);
				// 设置网格横线颜色
				plot.setOutlinePaint(Color.pink);
				
				// 显示每个柱的数值,并修改该数值的字体属性
				BarRenderer3D renderer=new BarRenderer3D();
				renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
				renderer.setBaseItemLabelsVisible(true);
				
				renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12, TextAnchor.BASELINE_LEFT));
				renderer.setItemLabelAnchorOffset(10D);  
				
				// 设置平行柱的之间距离
				renderer.setItemMargin(0.4);
				plot.setRenderer(renderer);
				
				//生成png图片
				String chartAsPNG =null;
				try {
					chartAsPNG= ServletUtilities.saveChartAsPNG(barChart3D, 700, 500, null, session);
				} catch (Exception e) {
					e.printStackTrace();
				}
				return chartAsPNG;
			}
		}

  2).在web.xml文件中配置如下: 

<servlet>
					<servlet-name>DisplayChart</servlet-name>
					<servlet-class>org.jfree.chart.servlet.DisplayChart</servlet-class>
				</servlet>
				<servlet-mapping>
					<servlet-name>DisplayChart</servlet-name>
					<url-pattern>/DisplayChart</url-pattern>
				</servlet-mapping>

   3).在index.jsp页面中

 <body>
			<%
				String fileName = BarChart03.getBarChart(session);
			%>

			<img src="${pageContext.request.contextPath}/DisplayChart?filename=<%=fileName%>">
			</body>

  ========================================饼状图==================================

 

  1,DefaultPieDataset,PiePlot,PiePlot3D 引入
  2,利用JFreeChart 创建普通饼状图报表
     1).Java代码

     

public class PieChart1 {
			
			public static String getPieChart(HttpSession session) throws Exception{
				//1.拿到数据集
				DefaultPieDataset dataSet = new DefaultPieDataset();
				dataSet.setValue("苹果",1000);
				dataSet.setValue("梨子",800);
				dataSet.setValue("香蕉",1200);
				dataSet.setValue("菠萝",400);
				
				//2.利用Chart工厂生产对象
				JFreeChart chart = ChartFactory.createPieChart("人均每年水果消耗量", dataSet, true, true, true);
				
				chart.addSubtitle(new TextTitle("2013年度"));
				
				PiePlot pieplot=(PiePlot)chart.getPlot();
				pieplot.setLabelFont(new Font("宋体",0,11));
				// 设置饼图是圆的(true),还是椭圆的(false);默认为true  
				pieplot.setCircular(true);
				// 没有数据的时候显示的内容
				pieplot.setNoDataMessage("无数据显示");
				StandardPieSectionLabelGenerator standarPieIG = new StandardPieSectionLabelGenerator("{0}:({1}.{2})", NumberFormat.getNumberInstance(), NumberFormat.getPercentInstance());  
				pieplot.setLabelGenerator(standarPieIG); 
				//3.
				String png = ServletUtilities.saveChartAsPNG(chart, 700, 500, null, session);
				
				return png;
			}
		}
		
	 2).在web.xml文件中配置如下: 
	  			<servlet>
					<servlet-name>DisplayChart</servlet-name>
					<servlet-class>org.jfree.chart.servlet.DisplayChart</servlet-class>
				</servlet>
				<servlet-mapping>
					<servlet-name>DisplayChart</servlet-name>
					<url-pattern>/DisplayChart</url-pattern>
				</servlet-mapping>
				
	  3).在index.jsp页面中
		   <body>
			<%
				String fileName = BarChart03.getBarChart(session);
			%>

			<img src="${pageContext.request.contextPath}/DisplayChart?filename=<%=fileName%>">
			</body>

  

3,利用JFreeChart 创建普通饼状图报表,并且突出一个
只需要在原来的java代码中加入:
pieplot.setExplodePercent("菠萝",0.23);
即可将这一栏突出显示;

4,利用JFreeChart 创建3D 饼状图报表
只需要将:
JFreeChart chart = ChartFactory.createPieChart("人均每年水果消耗量", dataSet, true, true, true);
改为:
JFreeChart chart = ChartFactory.createPieChart3D("人均每年水果消耗量", dataSet,true, true, true);
即可创建3D饼状图报表!


5.针对3D饼状图添加 透明度等设置
【只需要在上面的代码中加入如下的设置】:
//设置开始角度
pieplot.setStartAngle(120D);
//设置方向为”顺时针方向“
pieplot.setDirection(Rotation.CLOCKWISE);
//设置透明度,0.5F为半透明,1为不透明,0为全透明
pieplot.setForegroundAlpha(0.7F);

  =====================================SpringMVC整合JFreeChart===========================================

  1.在springMVC的controller代码中:

@RequestMapping("/testView")
	public ModelAndView testView(HttpServletRequest request) throws Exception{
		ModelAndView mv = new ModelAndView();
		//1.构建数据集
		DefaultCategoryDataset dataSet = new DefaultCategoryDataset();
		
		dataSet.addValue(510,"河南", "面食");
		dataSet.addValue(580,"黑龙江", "大米");
		dataSet.addValue(390,"陕西", "泡馍");
		dataSet.addValue(420,"广东", "杂食");
		
		//2.用Chart工厂生成JFreeChar图表
		JFreeChart barChart3D = ChartFactory.createBarChart3D("面食消费统计图","面食", "比例", dataSet, PlotOrientation.VERTICAL, true, true, true);
		// 6. 将图形转换为图片,传到前台
        String fileName = ServletUtilities.saveChartAsJPEG(barChart3D, 700, 400, null, request.getSession());
		String chartURL = request.getContextPath() + "/chart?filename=" + fileName;
		mv.addObject("fileName", fileName);
		mv.setViewName("success");
		return mv;
	}

  

2).在web.xml文件中配置如下:
	<servlet>
        <servlet-name>DisplayChart</servlet-name>
        <servlet-class>org.jfree.chart.servlet.DisplayChart</servlet-class>
    </servlet>

    <servlet-mapping>
        <servlet-name>DisplayChart</servlet-name>
        <url-pattern>/chart</url-pattern>
    </servlet-mapping>
	
3).在index.jsp页面:
	<a href="${pageContext.request.contextPath }/testView">查看详情</a>
	
4)在success.jsp页面
	<body>
		<img  src="${pageContext.request.contextPath }/chart?filename=${fileName}">
	</body>

  对报表的样式设置

// 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);
		
		// 显示每个柱的数值,并修改该数值的字体属性
		BarRenderer3D renderer=new BarRenderer3D();
		renderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator());
		renderer.setBaseItemLabelsVisible(true);
		
		renderer.setBasePositiveItemLabelPosition(new ItemLabelPosition(ItemLabelAnchor.OUTSIDE12, TextAnchor.BASELINE_LEFT));
		renderer.setItemLabelAnchorOffset(10D);  
		
		// 设置平行柱的之间距离
		renderer.setItemMargin(0.4);
		
		plot.setRenderer(renderer);

  对饼状图做一些设置

		// 副标题
		chart.addSubtitle(new TextTitle("2013年度"));
		
		PiePlot pieplot=(PiePlot)chart.getPlot();
		pieplot.setLabelFont(new Font("宋体",0,11));
		// 设置饼图是圆的(true),还是椭圆的(false);默认为true  
		pieplot.setCircular(true);
		// 没有数据的时候显示的内容
		pieplot.setNoDataMessage("无数据显示");
		StandardPieSectionLabelGenerator standarPieIG = new StandardPieSectionLabelGenerator("{0}:({1}.{2})", NumberFormat.getNumberInstance(), NumberFormat.getPercentInstance());  
		pieplot.setLabelGenerator(standarPieIG);  
		
		
		pieplot.setExplodePercent("菠萝",0.23); 
		
		
		
		
		
		
		
		PiePlot3D pieplot3d = (PiePlot3D)chart.getPlot(); 
		
		//设置开始角度  
		pieplot3d.setStartAngle(120D);  
		//设置方向为”顺时针方向“  
		pieplot3d.setDirection(Rotation.CLOCKWISE);  
		//设置透明度,0.5F为半透明,1为不透明,0为全透明  
		pieplot3d.setForegroundAlpha(0.7F);