jfreechart的jar
Struts的jar
Struts整合jfreechart的插件包 struts2-jfreechart-plugin-2.1.8.1.jar
<package name="char" namespace="/char" extends="jfreechart-default"> <action name="*-*" class="com.wepull.bookSys.action.{1}Action" method="{2}"> <result name = "success" type = "chart" > <param name = "width" > 600 </param > <param name = "height" > 400 </param > </result > </action> </package>
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" class="org.apache.struts2.dispatcher.ChartResult"> <param name="height">150</param> <param name="width">200</param> </result-type> </result-types> </package> </struts>
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; } }
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; }