JFreeChart中文乱码的解决方法（补充方法二）

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):


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PiePlot plot = (PiePlot)freeChart.getPlot();  
plot.setLabelFont(new Font("宋体",Font.BOLD,15)); 

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);



	}

}

评论

1 楼 hanmiao 2013-09-05  

上述方法在我的 jfreechart 1.0.15 版本上无法正常运行，会提示 ClassCastException，原因是XYPlot 类型无法直接转化为 CategoryPlot 类型，估计是官方在新的版本中作了壹些修改引起的，目前我知道的最有效的解决方案是 51CTO 上提供的这个方法：http://developer.51cto.com/art/201112/308902.htm