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("水果产量图", data, true, false, false); /**
JFreeChart chart = ChartFactory.createBarChart3D(
"水果产量图", // 图表标题
"水果", // 目录轴的显示标签
"产量", // 数值轴的显示标签
dataset, // 数据集
PlotOrientation.VERTICAL, // 图表方向：水平、垂直
true, // 是否显示图例(对于简单的柱状图必须是 false)
false, // 是否生成工具
false // 是否生成 URL 链接
);
**/ JFreeChart chart = ChartFactory.createLineChart(
"折线图", // 图表标题
"时间", // 横轴显示标签
"销售额(百万)", // 纵轴显示标签
linedataset, // 数据集
PlotOrientation.VERTICAL, // 图表方向：水平、垂直
true, // 是否显示图例标识(对于简单的柱状图必须是 false)
true, // 是否生成工具
false // 是否生成 URL 链接
); /*
JFreeChart chart=ChartFactory.createTimeSeriesChart(
"编程词典全国销量统计"
, "销售月份"
, "销量（份）"
, createtimedata()
, false
, false
, false
);
*/
/*
* jfreechart1.0.13生成的图片中，中文都以方框形式显示,中文乱码解决如下（包括：饼图、柱状图、时序图、折线图）。
*/
/***设置饼图相关属性***/
/*
PiePlot pieplot = (PiePlot) chart.getPlot();//获取饼图区域对象。
pieplot.setLabelFont(new java.awt.Font("宋体",0,12));
pieplot.setNoDataMessage("无数据显示"); //没有数据的时候显示的内容
pieplot.setCircular(false);
pieplot.setLabelGap(0.02D);
TextTitle txtTitle = null;
txtTitle = chart.getTitle();
java.awt.Font font = new java.awt.Font("宋体", Font.BOLD, 16);
txtTitle.setFont(font);//解决标题中文乱码
chart.getLegend().setItemFont(font);
chart.setBackgroundPaint(new Color(232,232,232));//设定背景
pieplot.setBackgroundPaint(Color.white); //设定图表数据显示部分背景色
*/ /***设置柱状图、折线图相关属性***/ CategoryPlot catplot=chart.getCategoryPlot(); //获取柱状图、折线图区域对象。
CategoryAxis domainAxis=catplot.getDomainAxis();
catplot.setNoDataMessage("无数据显示");//没有数据的时候显示的内容
//列表标题
TextTitle txtTitle = null;
txtTitle = chart.getTitle();
txtTitle.setFont(new java.awt.Font("黑体",Font.BOLD,14));
//水平底部列表
domainAxis.setLabelFont(new java.awt.Font("黑体",Font.BOLD,14));
//水平底部标题
domainAxis.setTickLabelFont(new java.awt.Font("宋体",Font.BOLD,12));
//垂直标题
ValueAxis rangeAxis=catplot.getRangeAxis();//获取柱状
rangeAxis.setLabelFont(new java.awt.Font("黑体",Font.BOLD,15));
chart.getLegend().setItemFont(new java.awt.Font("黑体", Font.BOLD, 15));
//获得renderer
LineAndShapeRenderer lineAndShapeRenderer =(LineAndShapeRenderer)catplot.getRenderer();
lineAndShapeRenderer.setShapesVisible(true); //series 点（即数据点）可见
/*
lineAndShapeRenderer.setSeriesStroke(0, new BasicStroke(2.0F, 1, 1, 1.0F, new float[] {
10F, 6F
}, 0.0F)); //这里是虚线，默认是直线
*/ /***设置时序图相关属性***/
/**
XYPlot xyplot = (XYPlot) chart.getPlot();//获取时序图区域对象。
//列表标题
TextTitle txtTitle = null;
txtTitle = chart.getTitle();
txtTitle.setFont(new java.awt.Font("黑体",Font.BOLD,15));
//纵轴字体
xyplot.getRangeAxis().setLabelFont(new java.awt.Font("宋体", Font.BOLD, 12));
//横轴框里的标题字体:显示图例
//chart.getLegend().setItemFont(new java.awt.Font("宋体", Font.ITALIC, 12));
//横轴列表字体
xyplot.getDomainAxis().setTickLabelFont(new java.awt.Font("新宋体", 1, 12));
//横轴小标题字体
xyplot.getDomainAxis().setLabelFont(new java.awt.Font("新宋体", 1, 12));
chart.setBackgroundPaint(new Color(252,175,134)); //设置背景色
xyplot.setDomainGridlinesVisible(false); //设置网格不显示 //获取时间轴对象
DateAxis dateAxis = (DateAxis) xyplot.getDomainAxis();
//dateAxis.setLabelFont(new java.awt.Font("黑体", Font.ITALIC , 18)); //设置时间轴字体
dateAxis.setLowerMargin(0.0);//设置时间轴上显示的最小值
DateFormat format = new SimpleDateFormat("MM月份"); //创建日期格式对象
//创建DateTickUnit对象
DateTickUnit dtu = new DateTickUnit(DateTickUnitType.DAY,29,format);
dateAxis.setTickUnit(dtu);//设置日期轴的日期标签
**/ //chart.getTitle().setFont(new java.awt.Font("宋体", Font.BOLD, 15));
//chart.getLegend().setItemFont(new java.awt.Font("黑体", Font.BOLD, 15));
//CategoryAxis domainAxis = plot.getDomainAxis();
/*------设置X轴坐标上的文字-----------*/
//domainAxis.setTickLabelFont(new java.awt.Font("黑体", Font.PLAIN, 11));
/*------设置X轴的标题文字------------*/
//domainAxis.setLabelFont(new java.awt.Font("宋体", Font.PLAIN, 12));
//NumberAxis numberaxis = (NumberAxis) plot.getRangeAxis();
/*------设置Y轴坐标上的文字-----------*/
//numberaxis.setTickLabelFont(new java.awt.Font("黑体", Font.PLAIN, 12));
/*------设置Y轴的标题文字------------*/
//numberaxis.setLabelFont(new java.awt.Font("黑体", Font.PLAIN, 12)); FileOutputStream fos_jpg=null;
try{
fos_jpg=new FileOutputStream("D:\\ok_bing.jpg");
/*
* 第二个参数如果为100，会报异常：
* java.lang.IllegalArgumentException: The 'quality' must be in the range 0.0f to 1.0f
* 限制quality必须小于等于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){ }
} } /**
* 获取一个演示用的简单数据集对象
* @return
*/
//生成饼图数据
private static DefaultPieDataset getDataSet() {
DefaultPieDataset dataset = new DefaultPieDataset();
dataset.setValue("苹果",100);
dataset.setValue("梨子",200);
dataset.setValue("葡萄",300);
dataset.setValue("香蕉",400);
dataset.setValue("荔枝",500);
return dataset;
}
//生成柱状图数据
private static CategoryDataset getDataSet2() {
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");
return dataset;
} //生成折线图数据
public static DefaultCategoryDataset createDataset() {
DefaultCategoryDataset linedataset = new DefaultCategoryDataset();
// 各曲线名称
String series1 = "冰箱";
String series2 = "彩电";
String series3 = "洗衣机"; //横轴名称(列名称)
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;
} //生成时序图数据
public static XYDataset createtimedata() {
//实例化TimeSeries对象
TimeSeries timeseries = new TimeSeries("Data");
Day day = new Day(1, 1, 2008); //实例化Day
double d = 3000D;//添加一年365天的数据
for (int i = 0; i < 365; i++) {
d = d + (Math.random() - 0.5) * 10; //创建随机数据
timeseries.add(day, d); //向数据集合中添加数据
day = (Day) day.next();
}
//创建TimeSeriesCollection集合对象
TimeSeriesCollection timeSeriesCollection =new TimeSeriesCollection(timeseries);
//返回数据集合对象
return timeSeriesCollection;
} }