package net.viralpatel.itext.pdf;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.data.general.DefaultPieDataset;
public class PieChartDemo {
public static void main(String[] args) {
//TODO: Add code to generate PDFs with charts
}
public static JFreeChart generatePieChart() {
DefaultPieDataset dataSet = new DefaultPieDataset();
dataSet.setValue("China", 19.64);
dataSet.setValue("India", 17.3);
dataSet.setValue("United States", 4.54);
dataSet.setValue("Indonesia", 3.4);
dataSet.setValue("Brazil", 2.83);
dataSet.setValue("Pakistan", 2.48);
dataSet.setValue("Bangladesh", 2.38);
JFreeChart chart = ChartFactory.createPieChart(
"World Population by countries", dataSet, true, true, false);
return chart;
}
public static JFreeChart generateBarChart() {
DefaultCategoryDataset dataSet = new DefaultCategoryDataset();
dataSet.setValue(791, "Population", "1750 AD");
dataSet.setValue(978, "Population", "1800 AD");
dataSet.setValue(1262, "Population", "1850 AD");
dataSet.setValue(1650, "Population", "1900 AD");
dataSet.setValue(2519, "Population", "1950 AD");
dataSet.setValue(6070, "Population", "2000 AD");
JFreeChart chart = ChartFactory.createBarChart(
"World Population growth", "Year", "Population in millions",
dataSet, PlotOrientation.VERTICAL, false, true, false);
return chart;
}
}
Code language: Java (java)public static void main(String[] args) {
writeChartToPDF(generateBarChart(), 500, 400, "C://barchart.pdf");
writeChartToPDF(generatePieChart(), 500, 400, "C://piechart.pdf");
}
public static void writeChartToPDF(JFreeChart chart, int width, int height, String fileName) {
PdfWriter writer = null;
Document document = new Document();
try {
writer = PdfWriter.getInstance(document, new FileOutputStream(
fileName));
document.open();
PdfContentByte contentByte = writer.getDirectContent();
PdfTemplate template = contentByte.createTemplate(width, height);
Graphics2D graphics2d = template.createGraphics(width, height,
new DefaultFontMapper());
Rectangle2D rectangle2d = new Rectangle2D.Double(0, 0, width,
height);
chart.draw(graphics2d, rectangle2d);
graphics2d.dispose();
contentByte.addTemplate(template, 0, 0);
} catch (Exception e) {
e.printStackTrace();
}
document.close();
}
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View Comments
Excellent Tutorial. It's Matches with my requirement. Very Very Thanks for Providing This tutorial
can u provide me a code to handle multiple edit button for each row of table .
i am using dispatch action of struts 1 , but not been able to set the hidden varibale dynamically to send it to next action.
Hi Viral,
A very useful article! Thanks a bunch. :-)
I am facing a technical problem and I wonder if you will be able to help me out. I am using iText 2.1.5 (I know a newer version exists) to generate pdf files. I am picking up text from database and putting it in the pdf file. The database text however has tags like "Bold" instead of good old "
<b>Bold</b>".Despite using HTMLWorker.parseToList, the text Bold" is printed as it is in the generated pdf. I see that tags are not in the tagsSupported list of HTMLWorker.
I have googled and checked many sites but nothing seems to be working so far. If I don't find any solution, I will have to resort to parsing the strings by myself and replacing tags with appropriate html tags like
<b>, etc. I am hoping I don't have to do that as it somehow feels inelegant.Am I doing something wrong? Can you please help me out here?
Thanks a lot once again!
Swapna
I am sorry Viral. I didn't realize the site will format my text as per the html tags I mentioned. I will post the relevant part once again.
The database text has tags like "span" with "style" set to "font-weight:bold;" or "font-style:italic" instead of using b, u or i like tags.
Hi Viral,
I am using iText and JFreeChart.
I have generated a chart and am using iText to save the chart as PDF.
When I save the PDF to filesystem, the file saves correctly, then when opened, shows chart without any problems.
But when I try to serve the pdf as response to request, it gives me error file does not start with %pdf-.
My code is below.
Can you help me out in resolving this problem, where I might have made any mistake?
Thanks.
Regards,
Venkata.
Appreciate your help.
response.setContentType("application/pdf");
Rectangle pagesize = new Rectangle(width, height);
Document document = new Document(pagesize, 50, 50, 50, 50);
try {
PdfWriter writer = PdfWriter.getInstance(document, response.getOutputStream());
document.addTitle("Test PDF");
document.addAuthor("research");
document.addSubject("Demo");
document.open();
PdfContentByte cb = writer.getDirectContent();
PdfTemplate tp = cb.createTemplate(width, height);
Graphics2D g2 = tp.createGraphics(width, height, mapper);
Rectangle2D r2D = new Rectangle2D.Double(0, 0, width, height);
chart.draw(g2, r2D);
g2.dispose();
cb.addTemplate(tp, 0, 0);
} catch (DocumentException de) {
System.err.println(de.getMessage());
}
document.close();
Thanks a lot for the tutorial. A small addition, you could replace the document line by the following to set the pdf size :
Document document = new Document(new Rectangle(width,height));
Hey can u tell me where i save this jar file??????
plz repli fast.
@pradeep, it doesn't matter where you put the jar files, just make sure you add them to the classpath/buildpath. http://www.perfectknowledgedb.com/H2R/java.htm#buildpath
@donc_oe
Thank u :)
can anyone help me for creating dynamic graph(live trading)
x axis shoul be current time and y axis value is to get from database........
I have done x axis part in that i used thread and timeseries now i want to connect with database on y axis............
plzzzzzzzz help
Thank u :)
good work.
Its really suited my requirement.....with partial changes like, instead using pdf html display and getting data from db to replace the hardcoded dataset values