struts2学习笔记8-与JFreeChart的整合
首在在Action类里面必须有public class ViewModerationChartAction extends ActionSupport { private JFreeChart chart; public String execute() throws Exception { // chart creation logic... XYSeries dataSeries = new XYSeries(new Integer(1)); //pass a key for this serie for (int i = 0; i <= 100; i++) { dataSeries.add(i, RandomUtils.nextInt()); } XYSeriesCollection xyDataset = new XYSeriesCollection(dataSeries); ValueAxis xAxis = new NumberAxis("Raw Marks"); ValueAxis yAxis = new NumberAxis("Moderated Marks"); // set my chart variable chart = new JFreeChart( "Moderation Function", JFreeChart.DEFAULT_TITLE_FONT, new XYPlot( xyDataset, xAxis, yAxis, new StandardXYItemRenderer(StandardXYItemRenderer.LINES)), false); chart.setBackgroundPaint(java.awt.Color.white); return super.SUCCESS; } //一定要提供这个方法，而且一字不错的提供 public JFreeChart getChart() { return chart; } }
然后在配置文件下面
<action name="viewModerationChart" class="myapp.actions.ViewModerationChartAction"> <result name="success" type="chart"> <param name="width">400</param> <param name="height">300</param> </result></action>
加入jfreechart,jcommon,struts2-jfreechart-plugin的JAR包
最后把struts2-jfreechart-plugin.jar里面的插件的配置改了
<!--这样方便使用--><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>
http://struts.apache.org/2.x/docs/jfreechart-plugin.html
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