用Struts2生成Open Flash Chart 2图表数据

    package com.xy.strutsplugin;

    import java.io.IOException;
    import java.io.PrintWriter;

    import javax.servlet.http.HttpServletResponse;

    import jofc2.model.Chart;

    import org.apache.commons.logging.Log;
    import org.apache.commons.logging.LogFactory;
    import org.apache.struts2.StrutsStatics;

    import com.opensymphony.xwork2.ActionContext;
    import com.opensymphony.xwork2.ActionInvocation;
    import com.opensymphony.xwork2.Result;
    import com.opensymphony.xwork2.util.ValueStack;

    public class OFC2Result implements Result {
        private static final long serialVersionUID = 6881760833309063964L;
        private static final Log log = LogFactory.getLog(OFC2Result.class);

        public void execute(ActionInvocation invocation) throws Exception {
            ActionContext actionContext = invocation.getInvocationContext();
            HttpServletResponse response = (HttpServletResponse) actionContext
                    .get(StrutsStatics.HTTP_RESPONSE);
            
            try {
                ValueStack stack = invocation.getStack();
                Chart chart = (Chart)stack.findValue("ofcChart");
                
                response.setContentType("application/json-rpc;charset=utf-8");
                response.setHeader("Cache-Control", "no-cache");
                response.setHeader("Expires", "0");
                response.setHeader("Pragma", "No-cache");
                
                PrintWriter out = response.getWriter();
                log.debug(chart.toString());
                out.print(chart.toString());
            } catch (IOException exception) {
                log.error(exception.getMessage(), exception);
                throw exception;
            }
        }
    }

    package com.xy.action;

    import java.text.DateFormat;
    import java.util.ArrayList;
    import java.util.Date;
    import java.util.List;
    import java.util.Locale;

    import jofc2.model.Chart;
    import jofc2.model.elements.LineChart;
    import jofc2.model.axis.YAxis;
    import jofc2.model.Text;

    import com.opensymphony.xwork2.ActionSupport;

    public class LineAction extends ActionSupport{
        private static final long serialVersionUID = -5759373192727732648L;
        
        private Chart ofcChart;
        public Chart getOfcChart() {
            return ofcChart;
        }
        
        public String dot(){
            List<LineChart.Dot> data1=new ArrayList<LineChart.Dot>()
                    , data2=new ArrayList<LineChart.Dot>()
                    , data3=new ArrayList<LineChart.Dot>();
            for(double i=0;i<6.2;i+=0.2){
                // line 1 dot
                LineChart.Dot dot1 = new LineChart.Dot(Math.sin(i)*1.9+10);
                dot1.setDotSize(5);            // 点大小
                dot1.setColour("#f00000");    // 设置点颜色
                data1.add(dot1);
                
                // line 2 dot
                LineChart.Dot dot2 = new LineChart.Dot(Math.sin(i)*1.9+7);
                dot2.setDotSize(3);
                dot2.setHaloSize(1);        // 点外空白大小
                dot2.setColour("#3D5C56");
                data2.add(dot2);
                
                // line 3 dot
                LineChart.Dot dot3 = new LineChart.Dot(Math.sin(i)*1.9+4);
                dot3.setDotSize(4);
                dot3.setHaloSize(2);
                data3.add(dot3);
            }
            
            Date date = new Date();
            Locale locale = new Locale("zh","CN");
            DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.FULL, locale);
            
            // line 1
            LineChart line1 = new LineChart();
            line1.setDotStyle(new LineChart.Style(LineChart.Style.Type.DOT));
            line1.setWidth(1);            // 线宽
            line1.addDots(data1);        // 增加数据
            
            // line 2
            LineChart line2 = new LineChart();
            line2.setDotStyle(new LineChart.Style(LineChart.Style.Type.DOT));
            line2.setColour("#3D5C56");
            line2.setWidth(2);
            line2.addDots(data2);
            
            // line3
            LineChart line3 = new LineChart();
            line3.setDotStyle(new LineChart.Style(LineChart.Style.Type.DOT));
            line3.setWidth(6);
            line3.addDots(data3);
            
            YAxis y = new YAxis();
            y.setRange(0, 15, 5);        // 设置Y柚范围，参数依次为最小值、最大值、间隔

            ofcChart = new Chart();
            ofcChart.setTitle(new Text(dateFormat.format(date)));    // 设置标题
            ofcChart.addElements(line1);                            // 增加线到图表
            ofcChart.addElements(line2);
            ofcChart.addElements(line3);
            ofcChart.setYAxis(y);                                    // 设置Y柚
            
            return SUCCESS;
        }
    }