struts2初步-整合JFreeChart

wangzhiyun_cu

首先要加入以下3个jar包：

jfreechart-1.0.13.jar

jcommon-1.0.16.jar

struts2-jfreechart-plugin-2.2.1.1.jar

当然，版本号因人而异

 

来个测试的class：

 

public class JFreeChartUtil {     public static JFreeChart createChart() throws IOException {         // 数据集         DefaultPieDataset dpd = new DefaultPieDataset();         dpd.setValue("管理人员" , 25 );         dpd.setValue("市场人员" , 25 );         dpd.setValue("开发人员" , 45 );         dpd.setValue("其它人员" , 10 );         // 创建PieChart对象         JFreeChart chart = ChartFactory.createPieChart3D("某公司人员组织结构图" , dpd,                 true , true , false );         setFont(chart);         return chart;     }     public static void setFont(JFreeChart chart) {         Font font = new Font( "宋体" , Font.ITALIC, 12 );         PiePlot plot = (PiePlot) chart.getPlot();         chart.getTitle().setFont(font);         plot.setLabelFont(font);         chart.getLegend().setItemFont(font);     } }

再来个action

public class JFreeChartAction extends ActionSupport {     /**      *      */     private static final long serialVersionUID = -1163236831212708227L;     /**      * 定义JFreeChart对象 大家请注意在这里JFreeChart对象名只能为chart      * 不能是别的      * 关于这点      * 大家可以上struts2网站上面查看一下      *      * http://struts.apache.org/2.x/docs/jfreechart-plugin.html      */     private JFreeChart chart;               @Override     public String execute() throws Exception {         chart = JFreeChartUtil.createChart();         return SUCCESS;     }     public JFreeChart getChart() {         return chart;     }     public void setChart(JFreeChart chart) {         this.chart = chart;     }     }

配置struts.xml

<!--             关于extends继承jfreechart-default这点请大家注意             因为在 struts-default这个包里并没有result-type为chart的             chart 定义在前面我们导入的struts2-jfreechart-plugin-2.2.1.1.jar             下面的struts-plugin.xml文件中     -->          <package name = "JFreeChart" extends = "jfreechart-default" >         <action name = "JFreeChart" class = "com.****.JFreeChartAction" >             <result type = "chart" >                 <param name = "width" >600</param>                 <param name = "height" >400</param>             </result>         </action >     </package >

 

启动tomcat，输入网址测试一下：

http://localhost:8080/Struts2Demo/JFreeChart.action

结果如图：