JFreeChart 中文乱码解决方法方案

 由于JFreeChart组件的版本、操作平台、JDK的设置等因素，在使用JFreeChart组件时可能会出现中文乱码的现象。遇到此问题时，可通过设置文字的字体来解决问题。在此提供以下两种解决此问题的方法。
一、设置主题的样式（强烈推荐）
  在制图前，创建主题样式并制定样式中的字体，通过ChartFactory的setChartTheme（）方法设置主题样式。

//创建主题样式
   StandardChartTheme standardChartTheme=new StandardChartTheme("CN");
   //设置标题字体
   standardChartTheme.setExtraLargeFont(new Font("隶书",Font.BOLD,20));
   //设置图例的字体
   standardChartTheme.setRegularFont(new Font("宋书",Font.PLAIN,15));
   //设置轴向的字体
   standardChartTheme.setLargeFont(new Font("宋书",Font.PLAIN,15));
   //应用主题样式
   ChartFactory.setChartTheme(standardChartTheme);

  例如：

Java代码  

package com.zzs.jfreechart.demo;

import java.awt.Font;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.StandardChartTheme;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.title.LegendTitle;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.category.DefaultCategoryDataset;

public class JfreeChartTest {

    public static void main(String[] args) {

//     创建类别图（Category）数据对象

       DefaultCategoryDataset dataset = new DefaultCategoryDataset();

       dataset.addValue(100, "北京", "苹果");

       dataset.addValue(100, "上海", "苹果");

       dataset.addValue(100, "广州", "苹果");

       dataset.addValue(200, "北京", "梨子");

       dataset.addValue(200, "上海", "梨子");

       dataset.addValue(200, "广州", "梨子");

       dataset.addValue(300, "北京", "葡萄");

       dataset.addValue(300, "上海", "葡萄");

       dataset.addValue(300, "广州", "葡萄");

       dataset.addValue(400, "北京", "香蕉");

       dataset.addValue(400, "上海", "香蕉");

       dataset.addValue(400, "广州", "香蕉");

       dataset.addValue(500, "北京", "荔枝");

       dataset.addValue(500, "上海", "荔枝");

       dataset.addValue(500, "广州", "荔枝");
       //创建主题样式
       StandardChartTheme standardChartTheme=new StandardChartTheme("CN");
       //设置标题字体
       standardChartTheme.setExtraLargeFont(new Font("隶书",Font.BOLD,20));
       //设置图例的字体
       standardChartTheme.setRegularFont(new Font("宋书",Font.PLAIN,15));
       //设置轴向的字体
       standardChartTheme.setLargeFont(new Font("宋书",Font.PLAIN,15));
       //应用主题样式
       ChartFactory.setChartTheme(standardChartTheme);

        JFreeChart chart=ChartFactory.createBarChart3D("水果产量图", "水果", "水果", dataset, PlotOrientation.VERTICAL, true, true, true);
//        TextTitle textTitle = chart.getTitle();
//      textTitle.setFont(new Font("宋体", Font.BOLD, 20));
//      LegendTitle legend = chart.getLegend();
//      if (legend != null) {
//          legend.setItemFont(new Font("宋体", Font.BOLD, 20));
//      }
       ChartFrame  frame=new ChartFrame ("水果产量图 ",chart,true);

       frame.pack();

       frame.setVisible(true);

    }


}

二、制定乱码文字的字体
使用JFreeChart绘制图表的时候，如果使用默认的字体会导致图标中的汉字显示为乱码。解决方法如下：
JFreeChart是用户使用该库提供的各类图标的统一接口，JFreeChart主要由三个部分构成：title(标题),legend(图释),plot(图表主体)。三个部分设置字体的方法分别如下:
1.Title
TextTitle textTitle = freeChart.getTitle();  
textTitle.setFont(new Font("宋体",Font.BOLD,20)); 
2.Legent
LegendTitle legend = freeChart.getLegend();  
if (legend!=null) {  
   legend.setItemFont(new Font("宋体", Font.BOLD, 20));
} 
3.Plot 
    对于不同类型的图表对应Plot的不同的实现类，设置字体的方法也不完全相同。 
    对于使用CategoryPlot的图表(如柱状图):
CategoryPlot plot = (CategoryPlot)freeChart.getPlot();  
CategoryAxis domainAxis = plot.getDomainAxis();//(柱状图的x轴)  
domainAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));//设置x轴坐标上的字体  
domainAxis.setLabelFont(new Font("宋体",Font.BOLD,20));//设置x轴上的标题的字体    
ValueAxis valueAxis = plot.getRangeAxis();//(柱状图的y轴)  
valueAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));//设置y轴坐标上的字体  
valueAxis.setLabelFont(new Font("宋体",Font.BOLD,20));//设置y轴坐标上的标题的字体 
CategoryPlot plot = (CategoryPlot)freeChart.getPlot();
CategoryAxis domainAxis = plot.getDomainAxis();//(柱状图的x轴)
domainAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));//设置x轴坐标上的字体
domainAxis.setLabelFont(new Font("宋体",Font.BOLD,20));//设置x轴上的标题的字体
ValueAxis valueAxis = plot.getRangeAxis();//(柱状图的y轴)
valueAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));//设置y轴坐标上的字体
valueAxis.setLabelFont(new Font("宋体",Font.BOLD,20));//设置y轴坐标上的标题的字体
对于使用PiePlot的图标(如饼状图):
PiePlot plot = (PiePlot)freeChart.getPlot();  
plot.setLabelFont(new Font("宋体",Font.BOLD,15)); 
对于使用PiePlot的图标(如饼状图):
view plaincopy to clipboardprint?
PiePlot plot = (PiePlot)freeChart.getPlot();  
plot.setLabelFont(new Font("宋体",Font.BOLD,15)); 
4.jfreechart中文乱码问题解决方案(转)
柱状图(CategoryPlot):
    CategoryPlot plot=chart.getCategoryPlot();//获取图表区域对象
   CategoryAxis domainAxis=plot.getDomainAxis();
    //水平底部列表
    domainAxis.setLabelFont(new Font("黑体",Font.BOLD,14));
    //水平底部标题
    domainAxis.setTickLabelFont(new Font("宋体",Font.BOLD,12));
    //垂直标题
    ValueAxis rangeAxis=plot.getRangeAxis();//获取柱状
    rangeAxis.setLabelFont(new Font("黑体",Font.BOLD,15));
     chart.getLegend().setItemFont(new Font("黑体", Font.BOLD, 15));
饼图(PiePlot):
     JFreeChart chart = ChartFactory.createPieChart3D("IT行业职业分布图", dataset, true, false, false);
    chart.getTitle().setFont(new Font("黑体",Font.BOLD,20));//设置标题字体
    PiePlot piePlot= (PiePlot) chart.getPlot();//获取图表区域对象
    piePlot.setLabelFont(new Font("黑体",Font.BOLD,10));
    chart.getLegend().setItemFont(new Font("黑体",Font.BOLD,10));
时序图(TimeSeries) 
   XYPlot plot = (XYPlot) chart.getPlot();
    //纵轴字体
    plot.getRangeAxis().setLabelFont(new Font("宋体", Font.BOLD, 15));
    //横轴框里的标题字体
    chart.getLegend().setItemFont(new Font("宋体", Font.ITALIC, 15));
    //横轴列表字体
    plot.getDomainAxis().setTickLabelFont(new Font("新宋体", 1, 15));
    //横轴小标题字体
    plot.getDomainAxis().setLabelFont(new Font("新宋体", 1, 12));
折线图
chart.getTitle().setFont(new Font("宋体", Font.BOLD, 15));
   chart.getLegend().setItemFont(new Font("黑体", Font.BOLD, 15));
   CategoryAxis domainAxis = plot.getDomainAxis();  
   /*------设置X轴坐标上的文字-----------*/
   domainAxis.setTickLabelFont(new Font("黑体", Font.PLAIN, 11));  
   /*------设置X轴的标题文字------------*/
   domainAxis.setLabelFont(new Font("宋体", Font.PLAIN, 12));  
   NumberAxis numberaxis = (NumberAxis) plot.getRangeAxis();  
   /*------设置Y轴坐标上的文字-----------*/
   numberaxis.setTickLabelFont(new Font("黑体", Font.PLAIN, 12));   
   /*------设置Y轴的标题文字------------*/
   numberaxis.setLabelFont(new Font("黑体", Font.PLAIN, 12))

下面一个实例：

package com.zzs.jfreechart.demo;

import java.awt.Font;

import javax.swing.JPanel;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.title.LegendTitle;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.general.PieDataset;
import org.jfree.ui.ApplicationFrame;

public class JfreeChartOne extends ApplicationFrame {

    private static final long serialVersionUID = 1L;

    public JfreeChartOne(String s)

    {

        super(s);

        setContentPane(createJPanel());

    }

    public static void main(String[] args) {

        JfreeChartOne one = new JfreeChartOne("CityInfoPort公司组织架构图");

        one.pack();

        one.setVisible(true);

    }

    // 利用静态方法设定数据源(饼状图)

    public static PieDataset createPieDataset() {

        DefaultPieDataset defaultpiedataset = new DefaultPieDataset();

        defaultpiedataset.setValue("管理人员", 10.02D);

        defaultpiedataset.setValue("市场人员", 20.23D);

        defaultpiedataset.setValue("开发人员", 60.02D);

        defaultpiedataset.setValue("OEM人员", 10.02D);

        defaultpiedataset.setValue("其他人员", 5.11D);

        return defaultpiedataset;

    }

    // 通过ChartFactory创建JFreeChart的实例

    public static JFreeChart createJFreeChart(PieDataset p)

    {

        JFreeChart a = ChartFactory.createPieChart("CityInfoPort公司组织架构图", p,
                true, true, true);
        // JFreeChart主要由三个部分构成：title(标题),legend(图释),plot(图表主体)。
        //三个部分设置字体的方法分别如下:
        TextTitle textTitle = a.getTitle();
        textTitle.setFont(new Font("宋体", Font.BOLD, 20));
        LegendTitle legend = a.getLegend();
        if (legend != null) {
            legend.setItemFont(new Font("宋体", Font.BOLD, 20));
        }

        PiePlot pie = (PiePlot) a.getPlot();

        pie.setLabelFont(new Font("宋体", Font.BOLD, 12));

        pie.setNoDataMessage("No data available");

        pie.setCircular(true);

        pie.setLabelGap(0.01D);// 间距

        return a;

    }

    public static JPanel createJPanel() {

        JFreeChart jfreechart = createJFreeChart(createPieDataset());

        return new ChartPanel(jfreechart);

    }

}

下面这个修改坐标轴：

package com.zzs.jfreechart.demo;

import java.awt.Color;
import java.awt.Font;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartFrame;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.title.LegendTitle;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.time.Month;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.ui.RectangleInsets;

public class ShiJianXuLieTu01 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        //时间序列图

           TimeSeries timeseries = new TimeSeries("L&G European Index Trust",Month.class);

           timeseries.add(new Month(2, 2001), 181.8D);//这里用的是Month.class，同样还有Day.class Year.class 等等

           timeseries.add(new Month(3, 2001), 167.3D);

           timeseries.add(new Month(4, 2001), 153.8D);

           timeseries.add(new Month(5, 2001), 167.6D);

           timeseries.add(new Month(6, 2001), 158.8D);

           timeseries.add(new Month(7, 2001), 148.3D);

           timeseries.add(new Month(8, 2001), 153.9D);

           timeseries.add(new Month(9, 2001), 142.7D);

           timeseries.add(new Month(10, 2001), 123.2D);

           timeseries.add(new Month(11, 2001), 131.8D);

           timeseries.add(new Month(12, 2001), 139.6D);

           timeseries.add(new Month(1, 2002), 142.9D);

           timeseries.add(new Month(2, 2002), 138.7D);

           timeseries.add(new Month(3, 2002), 137.3D);

           timeseries.add(new Month(4, 2002), 143.9D);

           timeseries.add(new Month(5, 2002), 139.8D);

           timeseries.add(new Month(6, 2002), 137D);

           timeseries.add(new Month(7, 2002), 132.8D);



           TimeSeries timeseries1 = new TimeSeries("L&G UK Index Trust曾召帅",Month.class);

           timeseries1.add(new Month(2, 2001), 129.6D);

           timeseries1.add(new Month(3, 2001), 123.2D);

           timeseries1.add(new Month(4, 2001), 117.2D);

           timeseries1.add(new Month(5, 2001), 124.1D);

           timeseries1.add(new Month(6, 2001), 122.6D);

           timeseries1.add(new Month(7, 2001), 119.2D);

           timeseries1.add(new Month(8, 2001), 116.5D);

           timeseries1.add(new Month(9, 2001), 112.7D);

           timeseries1.add(new Month(10, 2001), 101.5D);

           timeseries1.add(new Month(11, 2001), 106.1D);

           timeseries1.add(new Month(12, 2001), 110.3D);

           timeseries1.add(new Month(1, 2002), 111.7D);

           timeseries1.add(new Month(2, 2002), 111D);

           timeseries1.add(new Month(3, 2002), 109.6D);

           timeseries1.add(new Month(4, 2002), 113.2D);

           timeseries1.add(new Month(5, 2002), 111.6D);

           timeseries1.add(new Month(6, 2002), 108.8D);

           timeseries1.add(new Month(7, 2002), 101.6D);

           TimeSeriesCollection timeseriescollection = new TimeSeriesCollection();

           timeseriescollection.addSeries(timeseries);

            timeseriescollection.addSeries(timeseries1);

           timeseriescollection.setDomainIsPointsInTime(true); //domain轴上的刻度点代表的是时间点而不是时间段

           JFreeChart jfreechart = ChartFactory.createTimeSeriesChart("合法 & General Unit Trust Prices",

                  "日期",

                  "暗示的话发神经提防",

                  timeseriescollection,

                  true,

                  true,

                  false);

                  jfreechart.setBackgroundPaint(Color.white);
                  TextTitle textTitle = jfreechart.getTitle();
                textTitle.setFont(new Font("宋体", Font.BOLD, 20));
                LegendTitle legend = jfreechart.getLegend();
                if (legend != null) {
                    legend.setItemFont(new Font("宋体", Font.BOLD, 20));
                }

                  XYPlot xyplot = (XYPlot)jfreechart.getPlot(); //获得 plot : XYPlot!!
                  ValueAxis domainAxis=xyplot.getDomainAxis();
                  domainAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));//设置x轴坐标上的字体
                  domainAxis.setLabelFont(new Font("宋体",Font.BOLD,20));//设置x轴坐标上的标题的字体

                  ValueAxis rangeAxis=xyplot.getRangeAxis();
                  rangeAxis.setTickLabelFont(new Font("宋体",Font.BOLD,20));//设置y轴坐标上的字体
                  rangeAxis.setLabelFont(new Font("宋体",Font.BOLD,20));//设置y轴坐标上的标题的字体

                  xyplot.setBackgroundPaint(Color.lightGray);

                  xyplot.setDomainGridlinePaint(Color.white);

                  xyplot.setRangeGridlinePaint(Color.white);

                  xyplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D));

                  xyplot.setDomainCrosshairVisible(true);

                  xyplot.setRangeCrosshairVisible(true);

                  ChartFrame  frame=new ChartFrame ("折线图 ",jfreechart,true);

                  frame.pack();

                  frame.setVisible(true);



    }

}