添加3个包
struts2-jfreechart-plugin-2.3.16.3.jar
jcommon-1.0.16.jar
jfreechart-1.0.13.jar
struts.xml中配置
查看struts2-jfreechart-plugin-2.3.16.3.jar中的struts-plugin.xml文件
查看其中的定义的东西 然后写着struts.xml中
<package name="freechart" extends="jfreechart-default">
<action name="freechart" class="cn.itcast.chart.MyFreeChart">
<result type="chart" name="success" >
<param name="height">800</param>
<param name="width">600</param>
</result>
</action>
</package>
package cn.itcast.chart;
import java.io.Serializable;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.StandardXYItemRenderer;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import com.opensymphony.xwork2.ActionSupport;
public class MyFreeChart extends ActionSupport implements Serializable {
private JFreeChart chart;
public JFreeChart getChart() {
return chart;
}
public String execute(){
ValueAxis xAxis = new NumberAxis("年度");
ValueAxis yAxis = new NumberAxis("产值");
XYSeries xySeries = new XYSeries("绿豆");
xySeries.add(0,300);
xySeries.add(1,200);
xySeries.add(2,400);
xySeries.add(3,500);
xySeries.add(4,600);
xySeries.add(5,500);
xySeries.add(6,800);
xySeries.add(7,1000);
xySeries.add(8,1100);
XYSeriesCollection xyDataset = new XYSeriesCollection(xySeries);
XYPlot xyPlot = new XYPlot(xyDataset,xAxis,yAxis,new StandardXYItemRenderer(StandardXYItemRenderer.SHAPES_AND_LINES));
chart = new JFreeChart(xyPlot);
return SUCCESS;
}
}
就能返回图表