JFreeChart Plugin
【摘要】
Usage
To use the plugin, have your Struts configuration package extend the jfreechart-default package, which provides the chart result type. Next, use it as a result in...
Usage
To use the plugin, have your Struts configuration package extend the jfreechart-default package, which provides the chart result type. Next, use it as a result in an action:
Chart example in struts.xml
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<action name="viewModerationChart" class="myapp.actions.ViewModerationChartAction"> <result name="success" type="chart"> <param name="width">400</param> <param name="height">300</param> </result></action>
In your Action class, provide a getChart() method that returns the chart to be rendered. This method will be called by the chart result.
Example
Struts Action that provides a chart
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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; } public JFreeChart getChart() { return chart; }}
文章来源: blog.csdn.net，作者：fengda2870，版权归原作者所有，如需转载，请联系作者。
原文链接：blog.csdn.net/fengda2870/article/details/3030224
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