Struts2.1.8整合jfreechart
需要的jar

jfreechart的jar

Struts的jar

Struts整合jfreechart的插件包 struts2-jfreechart-plugin-2.1.8.1.jar

1.struts.xml配置

<package name="char" namespace="/char" extends="jfreechart-default">     <action name="*-*" method="{2}">           <result name = "success" type = "chart" >                    <param name = "width" > 600 </param >                    <param name = "height" > 400 </param >                </result >        </action></package>

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这个配置查看struts2-jfreechart-plugin-2.1.8.1.jar包中的struts-plugin.xml 文件（如下）

!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"    "http://struts.apache.org/dtds/struts-2.0.dtd">    <struts>    <package name="jfreechart-default" extends="struts-default">         <result-types>      <result-type name="chart" name="code">public class CharAction extends ActionSupport {    private  JFreeChart chart;  //名字必须为char          public String showChart() {  chart = CreateChart.exportPiechart();  return SUCCESS; } public  JFreeChart getChart() {  //必须提供get方法           return  chart;        } }

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3.CreateChart 类

public class CreateChart { public static JFreeChart exportPiechart() {  DefaultPieDataset dataset = new DefaultPieDataset();  dataset.setValue("经济舱总售票" + 105, 105);  dataset.setValue("商务舱总售票" + 30, 30);  dataset.setValue("头等舱总售票" + 50, 50);  JFreeChart chart = ChartFactory.createPieChart3D("客户统计图", dataset,    true, true, true);  chart.setTitle(new TextTitle("售票统计图", new Font("黑体", Font.ITALIC, 14)));// 标题字体  // 设置图例部分  LegendTitle legend = chart.getLegend(0);  // 设置图的部分  PiePlot plot = (PiePlot) chart.getPlot();  plot.setLabelFont(new Font("宋体", Font.BOLD, 12));// 设置实际统计图的字体  plot.setBackgroundAlpha(0.9f);  plot.setForegroundAlpha(0.50f);  return chart; }

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