JFreeChart 圖表生成實(shí)例(餅圖、柱狀圖、折線圖、時(shí)序圖)
2018-07-20 來(lái)源：open-open
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(chǎn)量圖", data, true, false, false);
/**
JFreeChart chart = ChartFactory.createBarChart3D(
"水果產(chǎn)量圖", // 圖表標(biāo)題
"水果", // 目錄軸的顯示標(biāo)簽
"產(chǎn)量", // 數(shù)值軸的顯示標(biāo)簽
dataset, // 數(shù)據(jù)集
PlotOrientation.VERTICAL, // 圖表方向：水平、垂直
true, // 是否顯示圖例(對(duì)于簡(jiǎn)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(biāo)題
"時(shí)間", // 橫軸顯示標(biāo)簽
"銷售額(百萬(wàn))", // 縱軸顯示標(biāo)簽
linedataset, // 數(shù)據(jù)集
PlotOrientation.VERTICAL, // 圖表方向：水平、垂直
true, // 是否顯示圖例標(biāo)識(shí)(對(duì)于簡(jiǎn)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(guó)銷量統(tǒng)計(jì)"
, "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(shí)序圖、折線圖）。
*/
/***設(shè)置餅圖相關(guān)屬性***/
/*
PiePlot pieplot = (PiePlot) chart.getPlot();//獲取餅圖區(qū)域?qū)ο蟆? pieplot.setLabelFont(new java.awt.Font("宋體",0,12));
pieplot.setNoDataMessage("無(wú)數(shù)據(jù)顯示"); //沒(méi)有數(shù)據(jù)的時(shí)候顯示的內(nèi)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(biāo)題中文亂碼
chart.getLegend().setItemFont(font);
chart.setBackgroundPaint(new Color(232,232,232));//設(shè)定背景
pieplot.setBackgroundPaint(Color.white); //設(shè)定圖表數(shù)據(jù)顯示部分背景色
*/
/***設(shè)置柱狀圖、折線圖相關(guān)屬性***/
CategoryPlot catplot=chart.getCategoryPlot(); //獲取柱狀圖、折線圖區(qū)域?qū)ο蟆? CategoryAxis domainAxis=catplot.getDomainAxis();
catplot.setNoDataMessage("無(wú)數(shù)據(jù)顯示");//沒(méi)有數(shù)據(jù)的時(shí)候顯示的內(nèi)容
//列表標(biāo)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(biāo)題
domainAxis.setTickLabelFont(new java.awt.Font("宋體",Font.BOLD,12));
//垂直標(biāo)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(diǎn)（即數(shù)據(jù)點(diǎn)）可見(jiàn)
/*
lineAndShapeRenderer.setSeriesStroke(0, new BasicStroke(2.0F, 1, 1, 1.0F, new float[] {
10F, 6F
}, 0.0F)); //這里是虛線，默認(rèn)是直線
*/
/***設(shè)置時(shí)序圖相關(guān)屬性***/
/**
XYPlot xyplot = (XYPlot) chart.getPlot();//獲取時(shí)序圖區(qū)域?qū)ο蟆? //列表標(biāo)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(biāo)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(biāo)題字體
xyplot.getDomainAxis().setLabelFont(new java.awt.Font("新宋體", 1, 12));
chart.setBackgroundPaint(new Color(252,175,134)); //設(shè)置背景色
xyplot.setDomainGridlinesVisible(false); //設(shè)置網(wǎng)格不顯示
//獲取時(shí)間軸對(duì)象
DateAxis dateAxis = (DateAxis) xyplot.getDomainAxis();
//dateAxis.setLabelFont(new java.awt.Font("黑體", Font.ITALIC , 18)); //設(shè)置時(shí)間軸字體
dateAxis.setLowerMargin(0.0);//設(shè)置時(shí)間軸上顯示的最小值
DateFormat format = new SimpleDateFormat("MM月份"); //創(chuàng)建日期格式對(duì)象
//創(chuàng)建DateTickUnit對(duì)象
DateTickUnit dtu = new DateTickUnit(DateTickUnitType.DAY,29,format);
dateAxis.setTickUnit(dtu);//設(shè)置日期軸的日期標(biāo)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(shè)置X軸坐標(biāo)上的文字-----------*/
//domainAxis.setTickLabelFont(new java.awt.Font("黑體", Font.PLAIN, 11));
/*------設(shè)置X軸的標(biāo)題文字------------*/
//domainAxis.setLabelFont(new java.awt.Font("宋體", Font.PLAIN, 12));
//NumberAxis numberaxis = (NumberAxis) plot.getRangeAxis();
/*------設(shè)置Y軸坐標(biāo)上的文字-----------*/
//numberaxis.setTickLabelFont(new java.awt.Font("黑體", Font.PLAIN, 12));
/*------設(shè)置Y軸的標(biāo)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(gè)參數(shù)如果為100，會(huì)報(bào)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(gè)演示用的簡(jiǎn)單數(shù)據(jù)集對(duì)象
* @return
*/
//生成餅圖數(shù)據(jù)
private static DefaultPieDataset getDataSet() {
DefaultPieDataset dataset = new DefaultPieDataset();
dataset.setValue("蘋(píng)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(shù)據(jù)
private static CategoryDataset getDataSet2() {
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
dataset.addValue(100, "北京", "蘋(píng)果");
dataset.addValue(100, "上海", "蘋(píng)果");
dataset.addValue(100, "廣州", "蘋(píng)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(shù)據(jù)
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(jī)";
//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(shí)序圖數(shù)據(jù)
public static XYDataset createtimedata() {
//實(shí)例化TimeSeries對(duì)象
TimeSeries timeseries = new TimeSeries("Data");
Day day = new Day(1, 1, 2008); //實(shí)例化Day
double d = 3000D;//添加一年365天的數(shù)據(jù)
for (int i = 0; i < 365; i++) {
d = d + (Math.random() - 0.5) * 10; //創(chuàng)建隨機(jī)數(shù)據(jù)
timeseries.add(day, d); //向數(shù)據(jù)集合中添加數(shù)據(jù)
day = (Day) day.next();
}
//創(chuàng)建TimeSeriesCollection集合對(duì)象
TimeSeriesCollection timeSeriesCollection =new TimeSeriesCollection(timeseries);
//返回?cái)?shù)據(jù)集合對(duì)象
return timeSeriesCollection;
}
}
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