JFreeChart 圖表生成實例(餅圖、柱狀圖、折線圖、時序圖)

mxd2 9年前發布 | 2K 次閱讀 Java
import java.awt.BasicStroke;
import java.awt.Color;
import java.io.FileOutputStream;
import java.io.IOException;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServlet;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;
import org.jfree.data.time.Day;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.XYDataset;
import org.jfree.chart.*;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.DateTickUnit;
import org.jfree.chart.axis.DateTickUnitType;
import org.jfree.chart.axis.ValueAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PiePlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.chart.servlet.ServletUtilities;
import org.jfree.chart.title.TextTitle;
import com.lowagie.text.Font;
import demo.BarChart3DDemo1;
/**

Servlet implementation class ChartDemoServlet
*/
public class ChartDemoServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
 public ChartDemoServlet() {
 super();
 // TODO Auto-generated constructor stub

 }


public void service(ServletRequest request, ServletResponse response) throws ServletException, IOException{

 response.setContentType("image/jpeg");
 DefaultPieDataset data = getDataSet();
 CategoryDataset dataset = getDataSet2();
 DefaultCategoryDataset linedataset = createDataset();


//JFreeChart chart = ChartFactory.createPieChart3D("水果產量圖", data, true, false, false);

 /**

JFreeChart chart = ChartFactory.createBarChart3D(
                "水果產量圖", // 圖表標題
                "水果", // 目錄軸的顯示標簽
                "產量", // 數值軸的顯示標簽
                dataset, // 數據集
    PlotOrientation.VERTICAL, // 圖表方向：水平、垂直
    true,  // 是否顯示圖例(對于簡單的柱狀圖必須是 false)
    false, // 是否生成工具
    false  // 是否生成 URL 鏈接
    );
  **/
JFreeChart chart = ChartFactory.createLineChart(
    "折線圖", // 圖表標題
       "時間", // 橫軸顯示標簽
       "銷售額(百萬)", // 縱軸顯示標簽
       linedataset, // 數據集
       PlotOrientation.VERTICAL, // 圖表方向：水平、垂直
       true, // 是否顯示圖例標識(對于簡單的柱狀圖必須是 false)
       true, // 是否生成工具
       false // 是否生成 URL 鏈接
       );

 /*

JFreeChart chart=ChartFactory.createTimeSeriesChart(
    "編程詞典全國銷量統計"
    , "銷售月份"
    , "銷量（份）"
    , createtimedata()
    , false
    , false
    , false
    );
  /
  /

jfreechart1.0.13生成的圖片中，中文都以方框形式顯示,中文亂碼解決如下（包括：餅圖、柱狀圖、時序圖、折線圖）。
/
/**設置餅圖相關屬性**/
/
PiePlot pieplot = (PiePlot) chart.getPlot();//獲取餅圖區域對象。
pieplot.setLabelFont(new java.awt.Font("宋體",0,12));
pieplot.setNoDataMessage("無數據顯示"); //沒有數據的時候顯示的內容
pieplot.setCircular(false);
pieplot.setLabelGap(0.02D);
TextTitle txtTitle = null;
txtTitle = chart.getTitle();
java.awt.Font font = new java.awt.Font("宋體", Font.BOLD, 16);
txtTitle.setFont(font);//解決標題中文亂碼
chart.getLegend().setItemFont(font);
chart.setBackgroundPaint(new Color(232,232,232));//設定背景
pieplot.setBackgroundPaint(Color.white); //設定圖表數據顯示部分背景色
*/
/設置柱狀圖、折線圖相關屬性/
CategoryPlot catplot=chart.getCategoryPlot();  //獲取柱狀圖、折線圖區域對象。
CategoryAxis domainAxis=catplot.getDomainAxis();
catplot.setNoDataMessage("無數據顯示");//沒有數據的時候顯示的內容
//列表標題
TextTitle txtTitle = null;
txtTitle = chart.getTitle();
txtTitle.setFont(new java.awt.Font("黑體",Font.BOLD,14));
//水平底部列表
domainAxis.setLabelFont(new java.awt.Font("黑體",Font.BOLD,14));
//水平底部標題
domainAxis.setTickLabelFont(new java.awt.Font("宋體",Font.BOLD,12));
//垂直標題
ValueAxis rangeAxis=catplot.getRangeAxis();//獲取柱狀
rangeAxis.setLabelFont(new java.awt.Font("黑體",Font.BOLD,15));
chart.getLegend().setItemFont(new java.awt.Font("黑體", Font.BOLD, 15));
//獲得renderer
LineAndShapeRenderer lineAndShapeRenderer =(LineAndShapeRenderer)catplot.getRenderer();
lineAndShapeRenderer.setShapesVisible(true); //series 點（即數據點）可見
/
lineAndShapeRenderer.setSeriesStroke(0, new BasicStroke(2.0F, 1, 1, 1.0F, new float[] {
  10F, 6F
  }, 0.0F)); //這里是虛線，默認是直線/


/設置時序圖相關屬性/
  /**
     XYPlot xyplot = (XYPlot) chart.getPlot();//獲取時序圖區域對象。
     //列表標題
  TextTitle txtTitle = null;
  txtTitle = chart.getTitle();
  txtTitle.setFont(new java.awt.Font("黑體",Font.BOLD,15));
     //縱軸字體
     xyplot.getRangeAxis().setLabelFont(new java.awt.Font("宋體", Font.BOLD, 12));
     //橫軸框里的標題字體:顯示圖例
     //chart.getLegend().setItemFont(new java.awt.Font("宋體", Font.ITALIC, 12));
     //橫軸列表字體
     xyplot.getDomainAxis().setTickLabelFont(new java.awt.Font("新宋體", 1, 12));
     //橫軸小標題字體
     xyplot.getDomainAxis().setLabelFont(new java.awt.Font("新宋體", 1, 12));
     chart.setBackgroundPaint(new Color(252,175,134)); //設置背景色
     xyplot.setDomainGridlinesVisible(false);  //設置網格不顯示

 //獲取時間軸對象
 DateAxis dateAxis = (DateAxis) xyplot.getDomainAxis();
 //dateAxis.setLabelFont(new java.awt.Font("黑體", Font.ITALIC , 18));   //設置時間軸字體
 dateAxis.setLowerMargin(0.0);//設置時間軸上顯示的最小值
 DateFormat format = new SimpleDateFormat("MM月份");   //創建日期格式對象
 //創建DateTickUnit對象
 DateTickUnit dtu = new DateTickUnit(DateTickUnitType.DAY,29,format);
 dateAxis.setTickUnit(dtu);//設置日期軸的日期標簽
 **/

 //chart.getTitle().setFont(new java.awt.Font("宋體", Font.BOLD, 15));
 //chart.getLegend().setItemFont(new java.awt.Font("黑體", Font.BOLD, 15));
 //CategoryAxis domainAxis = plot.getDomainAxis();  
 /*------設置X軸坐標上的文字-----------*/
 //domainAxis.setTickLabelFont(new java.awt.Font("黑體", Font.PLAIN, 11));  
 /*------設置X軸的標題文字------------*/
 //domainAxis.setLabelFont(new java.awt.Font("宋體", Font.PLAIN, 12));  
 //NumberAxis numberaxis = (NumberAxis) plot.getRangeAxis();  
 /*------設置Y軸坐標上的文字-----------*/
 //numberaxis.setTickLabelFont(new java.awt.Font("黑體", Font.PLAIN, 12));  
 /*------設置Y軸的標題文字------------*/
 //numberaxis.setLabelFont(new java.awt.Font("黑體", Font.PLAIN, 12));



FileOutputStream fos_jpg=null;
  try{
   fos_jpg=new FileOutputStream("D:\ok_bing.jpg");
   /*

* 第二個參數如果為100，會報異常：
* java.lang.IllegalArgumentException: The 'quality' must be in the range 0.0f to 1.0f
* 限制quality必須小于等于1,把100改成 0.1f。
*/

ChartUtilities.writeChartAsJPEG(fos_jpg, 0.99f, chart, 600, 300, null);
}catch(Exception e){
   System.out.println("[e]"+e);
  }finally{
   try{
    fos_jpg.close();
   }catch(Exception e){
}
  }

}


/**

獲取一個演示用的簡單數據集對象
@return
*/
//生成餅圖數據
private static DefaultPieDataset getDataSet() {
DefaultPieDataset dataset = new DefaultPieDataset();
dataset.setValue("蘋果",100);
dataset.setValue("梨子",200);
dataset.setValue("葡萄",300);
dataset.setValue("香蕉",400);
dataset.setValue("荔枝",500);
return dataset;
}
//生成柱狀圖數據
private static CategoryDataset getDataSet2() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();

dataset.addValue(100, "北京", "蘋果");
dataset.addValue(100, "上海", "蘋果");
dataset.addValue(100, "廣州", "蘋果");
dataset.addValue(200, "北京", "梨子");
dataset.addValue(200, "上海", "梨子");
dataset.addValue(200, "廣州", "梨子");
dataset.addValue(300, "北京", "葡萄");
dataset.addValue(300, "上海", "葡萄");
dataset.addValue(300, "廣州", "葡萄");
dataset.addValue(400, "北京", "香蕉");
dataset.addValue(400, "上海", "香蕉");
dataset.addValue(400, "廣州", "香蕉");
dataset.addValue(500, "北京", "荔枝");
dataset.addValue(500, "上海", "荔枝");
dataset.addValue(500, "廣州", "荔枝");
return dataset;

}
//生成折線圖數據
public static DefaultCategoryDataset createDataset() {
DefaultCategoryDataset linedataset = new DefaultCategoryDataset();
//  各曲線名稱
String series1 = "冰箱";
String series2 = "彩電";
String series3 = "洗衣機";
//橫軸名稱(列名稱)
String type1 = "1月";
String type2 = "2月";
String type3 = "3月";
String type4 = "4月";
String type5 = "5月";
linedataset.addValue(0.0, series1, type1);
linedataset.addValue(4.2, series1, type2);
linedataset.addValue(3.9, series1, type3);
linedataset.addValue(3.2, series1, type4);
linedataset.addValue(3.0, series1, type5);
linedataset.addValue(1.0, series2, type1);
linedataset.addValue(5.2, series2, type2);
linedataset.addValue(7.9, series2, type3);
linedataset.addValue(8.9, series2, type4);
linedataset.addValue(9.2, series2, type5);
linedataset.addValue(2.0, series3, type1);
linedataset.addValue(9.2, series3, type2);
linedataset.addValue(8.9, series3, type3);
linedataset.addValue(9.9, series3, type4);
linedataset.addValue(10.9, series3, type5);
return linedataset;
}
//生成時序圖數據
public static XYDataset createtimedata() {
//實例化TimeSeries對象
TimeSeries timeseries = new TimeSeries("Data");
Day day = new Day(1, 1, 2008);  //實例化Day
double d = 3000D;//添加一年365天的數據
for (int i = 0; i < 365; i++) {
d = d + (Math.random() - 0.5) * 10; //創建隨機數據
timeseries.add(day, d); //向數據集合中添加數據
day = (Day) day.next();
}
//創建TimeSeriesCollection集合對象
TimeSeriesCollection timeSeriesCollection =new TimeSeriesCollection(timeseries);
//返回數據集合對象
return timeSeriesCollection;
}


}</pre>
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Java
JFreeChart 圖表生成實例(餅圖、柱狀圖、折線圖、時序圖)

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