pdfexportdemo2.java

来自「jfreechart不错的教程例子谢谢!」· Java 代码 · 共 188 行

package org.jfree.chart.demo;

import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.geom.Rectangle2D;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.title.TextTitle;
import org.jfree.data.general.SeriesException;
import org.jfree.data.time.Day;
import org.jfree.data.time.Month;
import org.jfree.data.time.TimeSeries;
import org.jfree.data.time.TimeSeriesCollection;
import org.jfree.data.xy.XYDataset;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.AsianFontMapper;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.DefaultFontMapper;
import com.lowagie.text.pdf.FontMapper;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfTemplate;
import com.lowagie.text.pdf.PdfWriter;

//图表存为pdf时中文不能显示
/**
 * A simple demonstration showing how to write a chart to PDF format using
 * JFreeChart and iText.
 * <P>
 * You can download iText from http://www.lowagie.com/iText.
 */
public class PDFExportDemo2 {

	/**
	 * Saves a chart to a PDF file.
	 * 
	 * @param file
	 *            the file.
	 * @param chart
	 *            the chart.
	 * @param width
	 *            the chart width.
	 * @param height
	 *            the chart height.
	 */
	public static void saveChartAsPDF(File file, JFreeChart chart, int width,
			int height, FontMapper mapper) throws IOException {

		OutputStream out = new BufferedOutputStream(new FileOutputStream(file));
		writeChartAsPDF(out, chart, width, height, mapper);
		out.close();

	}

	/**
	 * Writes a chart to an output stream in PDF format.
	 * 
	 * @param out
	 *            the output stream.
	 * @param chart
	 *            the chart.
	 * @param width
	 *            the chart width.
	 * @param height
	 *            the chart height.
	 * 
	 */
	public static void writeChartAsPDF(OutputStream out, JFreeChart chart,
			int width, int height, FontMapper mapper) throws IOException {

		Rectangle pagesize = new Rectangle(width, height);
		Document document = new Document(pagesize, 50, 50, 50, 50);
		try {
			PdfWriter writer = PdfWriter.getInstance(document, out);
			document.addAuthor("JFreeChart");
			document.addSubject("Demonstration");
			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();
	}

	/**
	 * Creates a dataset, consisting of two series of monthly data. * *
	 * 
	 * @return the dataset.
	 */
	public static XYDataset createDataset() {

		TimeSeries s1 = new TimeSeries("L&G European Index Trust", Month.class);
		s1.add(new Month(2, 2001), 181.8);
		s1.add(new Month(3, 2001), 167.3);
		s1.add(new Month(4, 2001), 153.8);
		s1.add(new Month(5, 2001), 167.6);
		s1.add(new Month(6, 2001), 158.8);
		s1.add(new Month(7, 2001), 148.3);
		s1.add(new Month(8, 2001), 153.9);
		s1.add(new Month(9, 2001), 142.7);
		s1.add(new Month(10, 2001), 123.2);
		s1.add(new Month(11, 2001), 131.8);
		s1.add(new Month(12, 2001), 139.6);
		s1.add(new Month(1, 2002), 142.9);
		s1.add(new Month(2, 2002), 138.7);
		s1.add(new Month(3, 2002), 137.3);
		s1.add(new Month(4, 2002), 143.9);
		s1.add(new Month(5, 2002), 139.8);
		s1.add(new Month(6, 2002), 137.0);
		s1.add(new Month(7, 2002), 132.8);

		TimeSeries s2 = new TimeSeries("L&G UK Index Trust", Month.class);
		s2.add(new Month(2, 2001), 129.6);
		s2.add(new Month(3, 2001), 123.2);
		s2.add(new Month(4, 2001), 117.2);
		s2.add(new Month(5, 2001), 124.1);
		s2.add(new Month(6, 2001), 122.6);
		s2.add(new Month(7, 2001), 119.2);
		s2.add(new Month(8, 2001), 116.5);
		s2.add(new Month(9, 2001), 112.7);
		s2.add(new Month(10, 2001), 101.5);
		s2.add(new Month(11, 2001), 106.1);
		s2.add(new Month(12, 2001), 110.3);
		s2.add(new Month(1, 2002), 111.7);
		s2.add(new Month(2, 2002), 111.0);
		s2.add(new Month(3, 2002), 109.6);
		s2.add(new Month(4, 2002), 113.2);
		s2.add(new Month(5, 2002), 111.6);
		s2.add(new Month(6, 2002), 108.8);
		s2.add(new Month(7, 2002), 101.6);

		TimeSeriesCollection dataset = new TimeSeriesCollection();
		dataset.addSeries(s1);
		dataset.addSeries(s2);

		return dataset;
	}

	public static void main(String[] args) throws DocumentException {
		try {
			// create a chart...
			TimeSeries series = new TimeSeries("随机数据");
			Day current = new Day(1, 1, 2000);
			double value = 100.0;
			for (int i = 0; i < 1000; i++) {
				try {
					value = value + Math.random() - 0.5;
					series.add(current, new Double(value));
					current = (Day) current.next();
				} catch (SeriesException e) {
					System.err.println("Error adding to series");
				}
			}
			XYDataset data = new TimeSeriesCollection(series);
			JFreeChart chart = ChartFactory.createTimeSeriesChart("Test测试","日期", "值", data, true, false, false);

			String text = "你好!";
			Font font = new Font("SansSerif", Font.PLAIN, 12);

			TextTitle subtitle = new TextTitle(text, font);
			chart.addSubtitle(subtitle);

			// DefaultFontMapper mapper = new DefaultFontMapper();
			AsianFontMapper mapper = new AsianFontMapper("STSong-Light","UniGB-UCS2-H");
			mapper.insertDirectory("C:\\WINDOWS\\Fonts");
			//File fileName = new File(System.getProperty("user.home")+ "/jfreechart2.pdf");
			File fileName = new File("F:\\jfreechart2.pdf");
			saveChartAsPDF(fileName, chart, 400, 300, mapper);
			System.out.println("finished!");
		} catch (IOException e) {
			System.out.println(e.getMessage());
		}
	}
}