1. 3个jar包

jcommon,jfreechart,strust2-jfreechart-plugin

 

2

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3.

1 package com.goshop.action; 2  3 import java.awt.Font; 4 import java.util.List; 5  6 import javax.annotation.Resource; 7  8 import org.jfree.chart.ChartFactory; 9 import org.jfree.chart.JFreeChart;10 import org.jfree.chart.axis.CategoryAxis;11 import org.jfree.chart.axis.NumberAxis;12 import org.jfree.chart.plot.CategoryPlot;13 import org.jfree.chart.plot.PlotOrientation;14 import org.jfree.data.category.DefaultCategoryDataset;15 import org.springframework.stereotype.Controller;16 17 import com.goshop.domain.VoteOption;18 import com.goshop.service.IVoteOptionService;19 import com.opensymphony.xwork2.ActionSupport;20 21 @Controller22 public class ShowResultAction extends ActionSupport {23 24     private int voteID;25     private int channelID;26 27     public int getVoteID() {28         return voteID;29     }30 31     public void setVoteID(int voteID) {32         this.voteID = voteID;33     }34 35     public int getChannelID() {36         return channelID;37     }38 39     public void setChannelID(int channelID) {40         this.channelID = channelID;41     }42 43     @Resource44     private IVoteOptionService optionService;45     private JFreeChart chart;46 47     public void setChart(JFreeChart chart) {48         this.chart = chart;49     }50     public JFreeChart getChart(){51 52         List
     
       voteOptionList = optionService53                 .selectVoteOptionsByVoteId(voteID);54         DefaultCategoryDataset ds = new DefaultCategoryDataset();55         for (VoteOption option : voteOptionList) {56             ds.addValue(option.getTicketNum(), option.getVoteOptionName(), "");57         }58         JFreeChart chart = ChartFactory.createBarChart("球星投票结果", "投票选项", "投票数",59                 ds, PlotOrientation.VERTICAL, true, false, false);60         CategoryPlot categoryplot = (CategoryPlot) chart.getPlot();61         NumberAxis numberaxis = (NumberAxis) categoryplot.getRangeAxis();62         CategoryAxis domainAxis = categoryplot.getDomainAxis();63 64         /*------设置X轴坐标上的文字-----------*/65         domainAxis.setLabelFont(new Font("sans-serif", Font.PLAIN, 11));66         /*------设置X轴的标题文字------------*/67         domainAxis.setLabelFont(new Font("宋体", Font.PLAIN, 12));68         /*------设置Y轴坐标上的文字-----------*/69         numberaxis.setTickLabelFont(new Font("sans-serif", Font.PLAIN, 12));70         /*------设置Y轴的标题文字------------*/71         numberaxis.setLabelFont(new Font("黑体", Font.PLAIN, 12));72 73         /*------这句代码解决了底部汉字乱码的问题-----------*/74         chart.getLegend().setItemFont(new Font("宋体", Font.PLAIN, 12));75         /******* 这句代码解决了标题汉字乱码的问题 ********/76         /******* 这句代码解决了标题汉字乱码的问题 ********/77         chart.getTitle().setFont(new Font("宋体", Font.PLAIN, 12));78 79         return chart;80     }81 82     public String execute() throws Exception {83         return "success";84     }85 }