JFreeChart的下载和安装与使用

 <package name="chartaction" extends="jfreechart-default">

   <action name="chartAction" class="com.struts2.app.ChartAction" >

    <result name="success" type="chart"> <!-- 这里一定要设置为chart-->

           <param name="height">300</param>  

          <param name="width">240</param>  

    </result>

   </action>

   <action name="pieAction" class="com.struts2.app.PieAction">

    <result name="success" type="chart"> <!-- 这里一定要设置为chart-->

        <param name="height">300</param>

        <param name="width">400</param>

    </result>

   </action>

</package>

ipackage com.struts2.app;

import org.jfree.chart.JFreeChart;

import com.opensymphony.xwork2.ActionSupport;

public class ChartAction extends ActionSupport {

    private static final long serialVersionUID = 1L;

    private JFreeChart chart;

    @Override

    public String execute() throws Exception {

        chart = FruitService.createBarChart();

        return SUCCESS;

    }