jfreechart 的一般配置显示

package kite.struts2.action;


import java.awt.Font;

import javax.annotation.Resource;

import kite.domain.Question;
import kite.domain.statistics.OptionStatisticsModel;
import kite.domain.statistics.QuestionStatisticsModel;
import kite.service.StatisticsService;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.util.Rotation;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;


/**
 * 针对非矩阵式题型的设计,可有饼图 柱状图 折线图等
 */
@Controller("chartOutputAction")
@Scope("prototype")
public class ChartOutputAction extends BaseAction<Question> {
    private static final long serialVersionUID = -9021947290801678287L;
    /* 平面饼图 */
    private static final int CHARTTYPE_PIE_2D = 0;
    /* 立体饼图 */
    private static final int CHARTTYPE_PIE_3D = 1;
    /* 水平平面柱状图 */
    private static final int CHARTTYPE_BAR_2D_H = 2;
    /* 竖直平面柱状图 */
    private static final int CHARTTYPE_BAR_2D_V = 3;
    /* 水平立体柱状图 */
    private static final int CHARTTYPE_BAR_3D_H = 4;
    /* 竖直立体柱状图 */
    private static final int CHARTTYPE_BAR_3D_V = 5;
    /* 平面折线图 */
    private static final int CHARTTYPE_LINE_2D = 6;
    /* 立体折线图 */
    private static final int CHARTTYPE_LINE_3D = 7;

    // 图表类型
    private int chartType;
    // 对哪个问题进行统计
    private Integer qid;

    // 注入统计服务
    @Resource
    private StatisticsService ss;

    /**
     * 生成图表并输出到浏览器
     */
    public String execute() {
        return SUCCESS;
    }

    @SuppressWarnings("deprecation")
    public JFreeChart getChart() {
        JFreeChart chart = null ;
        try {
            Font font = new Font("宋体", 0, 20);// 字体
            QuestionStatisticsModel qsm = ss.statistics(qid);
            DefaultPieDataset pieds = null;// 饼图的数据集
            DefaultCategoryDataset cateds = null;// 种类数据集
            //构造数据集
            if(chartType < 2){
                pieds = new DefaultPieDataset();
                for (OptionStatisticsModel om : qsm.getOsms()) {
                    pieds.setValue(om.getOptionLabel(), om.getCount());
                }
            }
            else{
                cateds = new DefaultCategoryDataset();
                for (OptionStatisticsModel osm : qsm.getOsms()) {
                    cateds.addValue(osm.getCount(), osm.getOptionLabel(), "");
                }
            }
            
            // 判断要求的图形
            switch (chartType) {
                case CHARTTYPE_PIE_2D:// 平面饼图
                    chart = ChartFactory.createPieChart(qsm.getQuestion().getTitle(), pieds, true, false, false);
                    break ;
                case CHARTTYPE_PIE_3D:// 立体饼图
                    chart = ChartFactory.createPieChart3D(qsm.getQuestion().getTitle(), pieds, true, true, true);
                    //设置前景色透明度
                    chart.getPlot().setForegroundAlpha(0.6f);
                    break ;
                case CHARTTYPE_BAR_2D_H:// 平面条形图
                    chart = ChartFactory.createBarChart(qsm.getQuestion().getTitle(), "", "", cateds,
                            PlotOrientation.HORIZONTAL, true, true, true);
                    break ;
                case CHARTTYPE_BAR_2D_V:// 平面条形图
                    chart = ChartFactory.createBarChart(qsm.getQuestion().getTitle(), "", "", cateds,
                            PlotOrientation.VERTICAL, true, true, true);
                case CHARTTYPE_BAR_3D_H:// 平面条形图
                    chart = ChartFactory.createBarChart3D(qsm.getQuestion().getTitle(), "", "", cateds,
                            PlotOrientation.HORIZONTAL, true, true, true);
                case CHARTTYPE_BAR_3D_V:// 平面条形图
                    chart = ChartFactory.createBarChart3D(qsm.getQuestion().getTitle(), "", "", cateds,
                            PlotOrientation.VERTICAL, true, true, true);
                    break ;
                //
                case CHARTTYPE_LINE_2D:// 平面条形图
                    chart = ChartFactory.createLineChart(qsm.getQuestion().getTitle(), "", "", cateds,
                            PlotOrientation.VERTICAL, true, true, true);
                    break ;
                case CHARTTYPE_LINE_3D:// 平面条形图
                    chart = ChartFactory.createLineChart3D(qsm.getQuestion().getTitle(), "", "", cateds,
                            PlotOrientation.HORIZONTAL, true, true, true);
                    break ;
            }
            //设置标题和提示条中文
            chart.getTitle().setFont(font);
            chart.getLegend().setItemFont(font);
            //chart.setBackgroundImageAlpha(0.2f);
        
            //设置饼图特效
            if(chart.getPlot() instanceof PiePlot){
                PiePlot pieplot = (PiePlot) chart.getPlot();
                pieplot.setLabelFont(font);
                pieplot.setExplodePercent(0, 0.1);
                pieplot.setStartAngle(-15);
                pieplot.setDirection(Rotation.CLOCKWISE);
                pieplot.setNoDataMessage("No data to display");
                //pieplot.setForegroundAlpha(0.5f);
                //pieplot.setBackgroundImageAlpha(0.3f);
            }
            //设置非饼图效果
            else{
                chart.getCategoryPlot().getRangeAxis().setLabelFont(font);
                chart.getCategoryPlot().getRangeAxis().setTickLabelFont(font);
                chart.getCategoryPlot().getDomainAxis().setLabelFont(font);
                chart.getCategoryPlot().getDomainAxis().setTickLabelFont(font);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return chart ;
    }

    public int getChartType() {
        return chartType;
    }

    public void setChartType(int chartType) {
        this.chartType = chartType;
    }

    public Integer getQid() {
        return qid;
    }

    public void setQid(Integer qid) {
        this.qid = qid;
    }
}