📄 webhitchart.java
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/*
* This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
*
* ---------------------------
* WebHitChart.java
* ---------------------------
* (C) Copyright 2002-2004, by Richard Atkinson.
*
* Original Author: Richard Atkinson;
*/
package org.jfree.chart.demo.servlet;
import java.awt.*;
import java.awt.geom.Ellipse2D;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.Locale;
import java.text.NumberFormat;
import javax.servlet.http.HttpSession;
import org.jfree.data.*;
import org.jfree.chart.*;
import org.jfree.chart.axis.*;
import org.jfree.chart.renderer.BarRenderer;
import org.jfree.chart.renderer.StandardXYItemRenderer;
import org.jfree.chart.renderer.StackedXYAreaRenderer;
import org.jfree.chart.renderer.XYAreaRenderer;
import org.jfree.chart.plot.*;
import org.jfree.chart.entity.*;
import org.jfree.chart.labels.*;
import org.jfree.chart.urls.*;
import org.jfree.chart.servlet.*;
public class WebHitChart {
public static String generateBarChart(Date hitDate, HttpSession session, PrintWriter pw) {
String filename = null;
try {
// Retrieve list of WebHits
WebHitDataSet whDataSet = new WebHitDataSet();
ArrayList list = whDataSet.getDataBySection(hitDate);
// Throw a custom NoDataException if there is no data
if (list.size() == 0) {
System.out.println("No data has been found");
throw new NoDataException();
}
// Create and populate a CategoryDataset
Iterator iter = list.listIterator();
DefaultCategoryDataset dataset = new DefaultCategoryDataset();
while (iter.hasNext()) {
WebHit wh = (WebHit)iter.next();
dataset.addValue(new Long(wh.getHitCount()), "Hits", wh.getSection());
}
// Create the chart object
CategoryAxis categoryAxis = new CategoryAxis("");
ValueAxis valueAxis = new NumberAxis("");
BarRenderer renderer = new BarRenderer();
renderer.setItemURLGenerator(new StandardCategoryURLGenerator("xy_chart.jsp","series","section"));
renderer.setToolTipGenerator(new StandardCategoryToolTipGenerator());
Plot plot = new CategoryPlot(dataset, categoryAxis, valueAxis, renderer);
JFreeChart chart = new JFreeChart("", JFreeChart.DEFAULT_TITLE_FONT, plot, false);
chart.setBackgroundPaint(java.awt.Color.white);
// Write the chart image to the temporary directory
ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
filename = ServletUtilities.saveChartAsPNG(chart, 500, 300, info, session);
// Write the image map to the PrintWriter
ChartUtilities.writeImageMap(pw, filename, info);
pw.flush();
} catch (NoDataException e) {
System.out.println(e.toString());
filename = "public_nodata_500x300.png";
} catch (Exception e) {
System.out.println("Exception - " + e.toString());
e.printStackTrace(System.out);
filename = "public_error_500x300.png";
}
return filename;
}
public static String generatePieChart(Date hitDate, HttpSession session, PrintWriter pw) {
String filename = null;
try {
// Retrieve list of WebHits
WebHitDataSet whDataSet = new WebHitDataSet();
ArrayList list = whDataSet.getDataBySection(hitDate);
// Throw a custom NoDataException if there is no data
if (list.size() == 0) {
System.out.println("No data has been found");
throw new NoDataException();
}
// Create and populate a PieDataSet
DefaultPieDataset data = new DefaultPieDataset();
Iterator iter = list.listIterator();
while (iter.hasNext()) {
WebHit wh = (WebHit)iter.next();
data.setValue(wh.getSection(), new Long(wh.getHitCount()));
}
// Create the chart object
PiePlot plot = new PiePlot(data);
plot.setInsets(new Insets(0, 5, 5, 5));
plot.setURLGenerator(new StandardPieURLGenerator("xy_chart.jsp","section"));
plot.setToolTipGenerator(new StandardPieItemLabelGenerator());
JFreeChart chart = new JFreeChart("", JFreeChart.DEFAULT_TITLE_FONT, plot, true);
chart.setBackgroundPaint(java.awt.Color.white);
// Write the chart image to the temporary directory
ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
filename = ServletUtilities.saveChartAsPNG(chart, 500, 300, info, session);
// Write the image map to the PrintWriter
ChartUtilities.writeImageMap(pw, filename, info);
pw.flush();
} catch (NoDataException e) {
System.out.println(e.toString());
filename = "public_nodata_500x300.png";
} catch (Exception e) {
System.out.println("Exception - " + e.toString());
e.printStackTrace(System.out);
filename = "public_error_500x300.png";
}
return filename;
}
public static String generateXYChart(String section, HttpSession session, PrintWriter pw) {
String filename = null;
try {
// Retrieve list of WebHits
WebHitDataSet whDataSet = new WebHitDataSet();
ArrayList list = whDataSet.getDataByHitDate(section);
// Throw a custom NoDataException if there is no data
if (list.size() == 0) {
System.out.println("No data has been found");
throw new NoDataException();
}
// Create and populate an XYSeries Collection
XYSeries dataSeries = new XYSeries("Hits");
Iterator iter = list.listIterator();
while (iter.hasNext()) {
WebHit wh = (WebHit)iter.next();
dataSeries.add(wh.getHitDate().getTime(),wh.getHitCount());
}
XYSeriesCollection xyDataset = new XYSeriesCollection(dataSeries);
// Create tooltip and URL generators
SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy", Locale.UK);
StandardXYToolTipGenerator ttg = new StandardXYToolTipGenerator(
StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT,
sdf, NumberFormat.getInstance());
TimeSeriesURLGenerator urlg = new TimeSeriesURLGenerator(
sdf, "pie_chart.jsp", "series", "hitDate");
// Create the chart object
ValueAxis timeAxis = new DateAxis("");
NumberAxis valueAxis = new NumberAxis("");
valueAxis.setAutoRangeIncludesZero(false); // override default
StandardXYItemRenderer renderer = new StandardXYItemRenderer(
StandardXYItemRenderer.LINES + StandardXYItemRenderer.SHAPES,
ttg, urlg);
renderer.setShapesFilled(true);
XYPlot plot = new XYPlot(xyDataset, timeAxis, valueAxis, renderer);
JFreeChart chart = new JFreeChart("", JFreeChart.DEFAULT_TITLE_FONT, plot, false);
chart.setBackgroundPaint(java.awt.Color.white);
// Write the chart image to the temporary directory
ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
filename = ServletUtilities.saveChartAsPNG(chart, 500, 300, info, session);
// Write the image map to the PrintWriter
ChartUtilities.writeImageMap(pw, filename, info);
pw.flush();
} catch (NoDataException e) {
System.out.println(e.toString());
filename = "public_nodata_500x300.png";
} catch (Exception e) {
System.out.println("Exception - " + e.toString());
e.printStackTrace(System.out);
filename = "public_error_500x300.png";
}
return filename;
}
public static String generateXYAreaChart(HttpSession session, PrintWriter pw) {
String filename = null;
try {
// Retrieve list of WebHits for each section and populate a TableXYDataset
WebHitDataSet whDataSet = new WebHitDataSet();
ArrayList sections = whDataSet.getSections();
Iterator sectionIter = sections.iterator();
DefaultTableXYDataset dataset = new DefaultTableXYDataset();
while (sectionIter.hasNext()) {
String section = (String)sectionIter.next();
ArrayList list = whDataSet.getDataByHitDate(section);
XYSeries dataSeries = new XYSeries(section, true, false);
Iterator webHitIter = list.iterator();
while (webHitIter.hasNext()) {
WebHit webHit = (WebHit)webHitIter.next();
dataSeries.add(webHit.getHitDate().getTime(), webHit.getHitCount());
}
dataset.addSeries(dataSeries);
}
// Throw a custom NoDataException if there is no data
if (dataset.getItemCount() == 0) {
System.out.println("No data has been found");
throw new NoDataException();
}
// Create tooltip and URL generators
SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy", Locale.UK);
StandardXYToolTipGenerator ttg = new StandardXYToolTipGenerator(
StandardXYToolTipGenerator.DEFAULT_TOOL_TIP_FORMAT,
sdf, NumberFormat.getInstance());
TimeSeriesURLGenerator urlg = new TimeSeriesURLGenerator(
sdf, "bar_chart.jsp", "series", "hitDate");
// Create the X-Axis
DateAxis xAxis = new DateAxis(null);
xAxis.setLowerMargin(0.0);
xAxis.setUpperMargin(0.0);
// Create the X-Axis
NumberAxis yAxis = new NumberAxis(null);
yAxis.setAutoRangeIncludesZero(true);
// Create the renderer
StackedXYAreaRenderer renderer =
new StackedXYAreaRenderer(XYAreaRenderer.AREA_AND_SHAPES, ttg, urlg);
renderer.setSeriesPaint(0, new Color(255, 255, 180));
renderer.setSeriesPaint(1, new Color(206, 230, 255));
renderer.setSeriesPaint(2, new Color(255, 230, 230));
renderer.setSeriesPaint(3, new Color(206, 255, 206));
renderer.setShapePaint(Color.gray);
renderer.setShapeStroke(new BasicStroke(0.5f));
renderer.setShape(new Ellipse2D.Double(-3, -3, 6, 6));
renderer.setOutline(true);
// Create the plot
XYPlot plot = new XYPlot(dataset, xAxis, yAxis, renderer);
plot.setForegroundAlpha(0.65f);
// Reconfigure Y-Axis so the auto-range knows that the data is stacked
yAxis.configure();
// Create the chart
JFreeChart chart = new JFreeChart(null, JFreeChart.DEFAULT_TITLE_FONT, plot, true);
chart.setBackgroundPaint(java.awt.Color.white);
// Write the chart image to the temporary directory
ChartRenderingInfo info = new ChartRenderingInfo(new StandardEntityCollection());
filename = ServletUtilities.saveChartAsPNG(chart, 500, 300, info, session);
// Write the image map to the PrintWriter
ChartUtilities.writeImageMap(pw, filename, info);
pw.flush();
} catch (NoDataException e) {
System.out.println(e.toString());
filename = "public_nodata_500x300.png";
} catch (Exception e) {
System.out.println("Exception - " + e.toString());
e.printStackTrace(System.out);
filename = "public_error_500x300.png";
}
return filename;
}
public static void main(java.lang.String[] args) {
try {
SimpleDateFormat sdf = new SimpleDateFormat("dd-MMM-yyyy", Locale.UK);
PrintWriter pw = new PrintWriter(System.out);
String filename = WebHitChart.generateBarChart(sdf.parse("01-Aug-2002"), null, pw);
// String filename = WebHitChart.generatePieChart(sdf.parse("01-Aug-2002"), null, pw);
// String filename = WebHitChart.generateXYChart("service", null, pw);
System.out.println("filename - " + filename);
} catch (Exception e) {
System.out.println("Exception - " + e.toString());
e.printStackTrace();
}
return;
}
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