使用标准插件
每个struts-和其他插件联系的插件内都有一个struts-plugin.xml
JFreeChart使用
所需jar包:
/jfreechart-1.0.13.jar
/jcommon-1.0.16.jar
/struts2-jfreechart-plugin-2.1.8.1.jar
动作类
public class GetChartAction extends ActionSupport {
private static final long serialVersionUID = -7814290464584999876L;
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;
}
}配置文件
<package name="p2" extends="jfreechart-default"> <action name="chart" class="wiva.struts2.train.action.GetChartAction"> <result type="chart"> <param name="width">600</param> <param name="height">400</param> </result> </action> </package>
页面
<body> <s:url action="chart" var="url"></s:url> <img src="<s:property value="url"/>" alt="hello" /> </body>
