Java和iText导出pdf文档

package com.iText.bean;

public class Book {

	private int bookId;// 图书编号
	private String name;// 图书名称
	private String author;// 图书作者
	private float price;// 图书价格
	private String isbn;// 图书ISBN
	private String pubName;// 图书出版社
	private byte[] preface;// 封面图片

	public Book() {
		super();
	}

	public Book(int bookId, String name, String author, float price,
			String isbn, String pubName, byte[] preface) {
		super();
		this.bookId = bookId;
		this.name = name;
		this.author = author;
		this.price = price;
		this.isbn = isbn;
		this.pubName = pubName;
		this.preface = preface;
	}

	public int getBookId() {
		return bookId;
	}

	public void setBookId(int bookId) {
		this.bookId = bookId;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getAuthor() {
		return author;
	}

	public void setAuthor(String author) {
		this.author = author;
	}

	public float getPrice() {
		return price;
	}

	public void setPrice(float price) {
		this.price = price;
	}

	public String getIsbn() {
		return isbn;
	}

	public void setIsbn(String isbn) {
		this.isbn = isbn;
	}

	public String getPubName() {
		return pubName;
	}

	public void setPubName(String pubName) {
		this.pubName = pubName;
	}

	public byte[] getPreface() {
		return preface;
	}

	public void setPreface(byte[] preface) {
		this.preface = preface;
	}

}

package com.iText.bean;

import java.util.Date;

public class Student {

	private long id;// 学号
	private String name;// 姓名
	private int age;// 年龄
	private boolean sex;// 性别
	private Date birthday;// 出生日期

	public Student() {
		super();
	}

	public Student(long id, String name, int age, boolean sex, Date birthday) {
		super();
		this.id = id;
		this.name = name;
		this.age = age;
		this.sex = sex;
		this.birthday = birthday;
	}

	public long getId() {
		return id;
	}

	public void setId(long id) {
		this.id = id;
	}

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

	public boolean getSex() {
		return sex;
	}

	public void setSex(boolean sex) {
		this.sex = sex;
	}

	public Date getBirthday() {
		return birthday;
	}

	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}

}

package com.iText.util;

import java.io.UnsupportedEncodingException;
/**
 * 以上是两个帮助封装类，都是为了对付iText的中文问题的
 * @author zhaoxinguo
 *
 */
public class StrHelp {

	public static String getChinese(String s) {
		try {
			return new String(s.getBytes("gb2312"), "iso-8859-1");
		} catch (UnsupportedEncodingException e) {
			return s;
		}
	}
	
	
}

package com.iText.util;

import java.io.IOException;
import com.lowagie.text.BadElementException;
import com.lowagie.text.Cell;
import com.lowagie.text.Chunk;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Font;
import com.lowagie.text.Paragraph;
import com.lowagie.text.Phrase;
import com.lowagie.text.pdf.BaseFont;

/**
 * 下载地址：http://sourceforge.net/projects/itext/files/latest/download
 * 
 * @author zhaoxinguo
 * 
 */
public class PdfParagraph extends Paragraph {

	/**
	 * 
	 */
	private static final long serialVersionUID = 8852816419489363243L;

	public PdfParagraph(String content) {
		super(content, getChineseFont(12, false));
	}

	public PdfParagraph(String content, int fontSize, boolean isBold) {
		super(content, getChineseFont(fontSize, isBold));
	}

	// 设置字体-返回中文字体
	protected static Font getChineseFont(int nfontsize, boolean isBold) {
		BaseFont bfChinese;
		Font fontChinese = null;
		try {
			bfChinese = BaseFont.createFont("c://windows//fonts//simsun.ttc,1",BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
			if (isBold) {
				fontChinese = new Font(bfChinese, nfontsize, Font.BOLD);
			} else {
				fontChinese = new Font(bfChinese, nfontsize, Font.NORMAL);
			}
		} catch (DocumentException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return fontChinese;
	}

	// 转化中文
	protected Cell ChangeCell(String str, int nfontsize, boolean isBold)
			throws IOException, BadElementException, DocumentException {
		Phrase ph = ChangeChinese(str, nfontsize, isBold);
		Cell cell = new Cell(ph);
		return cell;
	}

	// 转化中文
	protected Chunk ChangeChunk(String str, int nfontsize, boolean isBold)
			throws IOException, BadElementException, DocumentException {
		Font FontChinese = getChineseFont(nfontsize, isBold);
		Chunk chunk = new Chunk(str, FontChinese);
		return chunk;
	}

	// 转化中文
	protected Phrase ChangeChinese(String str, int nfontsize, boolean isBold)
			throws IOException, BadElementException, DocumentException {
		Font FontChinese = getChineseFont(nfontsize, isBold);
		Phrase ph = new Phrase(str, FontChinese);
		return ph;
	}

}

package com.iText.util;

import java.awt.Color;
import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.net.MalformedURLException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Date;
import java.util.Iterator;

import javax.swing.JOptionPane;

import com.iText.bean.Book;
import com.lowagie.text.Cell;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Element;
import com.lowagie.text.HeaderFooter;
import com.lowagie.text.Image;
import com.lowagie.text.PageSize;
import com.lowagie.text.Phrase;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfPCell;
import com.lowagie.text.pdf.PdfPTable;
import com.lowagie.text.pdf.PdfWriter;

/**
 * 利用开源组件IText2.0.4动态导出PDF文档 转载时请保留以下信息，注明出处！
 * 
 * @author zhaoxinguo
 * @version v1.0
 * @param <T>应用泛型，代表任意一个符合javabean风格的类
 *        注意这里为了简单起见，boolean型的属性xxx的get器方式为getXxx(),而不是isXxx()
 *        byte[]表图片数据,注意合适的大小
 */
public class ExportPdf<T> {

	public void exportPdf(Collection<T> dataset, OutputStream out) {
		exportPdf("测试iText导出PDF文档", null, dataset, out, "yyyy-MM-dd");
	}

	public void exportPdf(String[] headers, Collection<T> dataset,
			OutputStream out) {
		exportPdf("测试iText导出PDF文档", headers, dataset, out, "yyyy-MM-dd");
	}

	public void exportPdf(String[] headers, Collection<T> dataset,
			OutputStream out, String pattern) {
		exportPdf("测试iText导出PDF文档", headers, dataset, out, pattern);
	}
	
	/**
	 * 这是一个通用的方法，利用了J***A的反射机制，可以将放置在J***A集合中并且符号一定条件的数据以PDF 的形式输出到指定IO设备上
	 * 
	 * @param title
	 *            表格标题名
	 * @param headers表格属性列名数组
	 * @param dataset需要显示的数据集合
	 *            ,集合中一定要放置符合javabean风格的类的对象。此方法支持的javabean属性的数据类型有基本数据类型及String
	 *            ,Date,byte[](图片数据)
	 * @param out与输出设备关联的流对象
	 *            ，可以将PDF文档导出到本地文件或者网络中
	 * @param pattern如果有时间数据
	 *            ，设定输出格式。默认为"yyy-MM-dd"
	 */
	public void exportPdf(String title, String[] headers,
			Collection<T> dataset, OutputStream out, String pattern) {
		// 作为报表的PDF文件，一定要适合打印机的输出打印
		Rectangle rectPageSize = new Rectangle(PageSize.A4);// 定义A4页面大小
		// rectPageSize = rectPageSize.rotate();// 加上这句可以实现A4页面的横置
		Document document = new Document(rectPageSize, 50, 50, 50, 50);// 其余4个参数，设置了页面的4个边距
		try {
			// 将PDF文档写出到out所关联IO设备上的书写对象
			PdfWriter.getInstance(document, out);
			// 添加文档元数据信息
			document.addTitle(StrHelp.getChinese(title));
			document.addSubject("export information");
			document.addAuthor("leno");
			document.addCreator("leno");
			document.addKeywords("pdf itext");
			// 定义页头和页尾
			HeaderFooter header = new HeaderFooter(new PdfParagraph(title, 20,
					true), false);
			header.setAlignment(Element.ALIGN_CENTER);
			HeaderFooter footer = new HeaderFooter(new Phrase(
					"This   is   page   "), new Phrase("."));
			footer.setAlignment(Element.ALIGN_CENTER);
			document.setHeader(header);
			document.setFooter(footer);
			// 打开PDF文档
			document.open();
			// 添加一张表格，使用Table或者PdfPTable
			// Table table = new Table(headers.length);
			// table.setWidth(16*headers.length);
			// //table.setWidths(new float[]{20,20,20,30});
			// table.setCellsFitPage(true);
			// table.setAutoFillEmptyCells(true);
			// table.setAlignment(Table.ALIGN_CENTER);
			// table.setBackgroundColor(Color.yellow);
			// table.setBorderColor(Color.green);
			PdfPTable table = new PdfPTable(headers.length);
			// table.setHorizontalAlignment(Element.ALIGN_CENTER);
			table.setWidthPercentage(16 * headers.length);
			// 产生表格标题行
			for (int i = 0; i < headers.length; i++) {
				PdfPCell cell = new PdfPCell(new PdfParagraph(headers[i], 14,
						true));
				cell.setHorizontalAlignment(Cell.ALIGN_CENTER);
				cell.setVerticalAlignment(Cell.ALIGN_MIDDLE);
				cell.setBackgroundColor(Color.cyan);
				cell.setBorderColor(Color.green);
				table.addCell(cell);
			}
			// 遍历集合数据，产生数据行
			Iterator<T> it = dataset.iterator();
			int index = 0;
			while (it.hasNext()) {
				index++;
				T t = (T) it.next();
				// 利用反射，根据javabean属性的先后顺序，动态调用getXxx()方法得到属性值
				Field[] fields = t.getClass().getDeclaredFields();
				for (short i = 0; i < fields.length; i++) {
					PdfPCell cell = null;
					Field field = fields[i];
					String fieldName = field.getName();
					String getMethodName = "get"
							+ fieldName.substring(0, 1).toUpperCase()
							+ fieldName.substring(1);
					try {
						Class tCls = t.getClass();
						Method getMethod = tCls.getMethod(getMethodName,
								new Class[] {});
						Object value = getMethod.invoke(t, new Object[] {});
						// 判断值的类型后进行强制类型转换
						String textValue = null;
						if (value instanceof Boolean) {
							boolean bValue = (Boolean) value;
							textValue = "男";
							if (!bValue) {
								textValue = "女";
							}
						} else if (value instanceof Date) {
							Date date = (Date) value;
							SimpleDateFormat sdf = new SimpleDateFormat(pattern);
							textValue = sdf.format(date);
						} else if (value instanceof byte[]) {
							byte[] bsValue = (byte[]) value;
							Image img = Image.getInstance(bsValue);
							cell = new PdfPCell(img);
						} else {
							textValue = value.toString();
						}
						// 如果不是图片数据,就当做文本处理
						if (textValue != null) {
							cell = new PdfPCell(new PdfParagraph(textValue));
						}
						cell.setHorizontalAlignment(Cell.ALIGN_CENTER);
						cell.setVerticalAlignment(Cell.ALIGN_MIDDLE);
						cell.setBorderColor(Color.green);
						table.addCell(cell);
					} catch (SecurityException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (NoSuchMethodException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (IllegalArgumentException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (IllegalAccessException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (InvocationTargetException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (MalformedURLException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} catch (IOException e) {
						// TODO Auto-generated catch block
						e.printStackTrace();
					} finally {
						// 清理资源
					}
				}

			}
			document.add(table);
			document.close();

		} catch (DocumentException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}
	
	public static void main(String[] args) throws Exception {
		// 测试学生
		/*ExportPdf<Student> ex = new ExportPdf<Student>();
		String[] headers = { "学号", "姓名", "年龄", "性别", "出生日期" };
		java.util.List<Student> dataset = new ArrayList<Student>();
		dataset.add(new Student(10000001, "张三", 20, true, new Date()));
		dataset.add(new Student(20000002, "李四", 24, false, new Date()));
		dataset.add(new Student(30000003, "王五", 22, true, new Date()));
		OutputStream out = new FileOutputStream("E://Student.pdf");
		ex.exportPdf(headers, dataset, out);
		out.close();
		JOptionPane.showMessageDialog(null, "pdf导出成功!");*/
		/****************************************************************************/
		// 测试图书
		ExportPdf<Book> ex2 = new ExportPdf<Book>();
		String[] headers2 = { "图书编号", "图书名称", "图书作者", "图书价格", "图书ISBN","图书出版社", "封面图片" };
		java.util.List<Book> dataset2 = new ArrayList<Book>();
		try {
			BufferedInputStream bis = new BufferedInputStream(new FileInputStream("book_1.jpg"));
			byte[] buf = new byte[bis.available()];
			while ((bis.read(buf)) != -1) {
				//
			}
			dataset2.add(new Book(1, "jsp", "leno", 300.33f, "1234567",
					"清华出版社", buf));
			dataset2.add(new Book(2, "java编程思想", "brucl", 300.33f, "1234567",
					"阳光出版社", buf));
			dataset2.add(new Book(3, "DOM艺术", "lenotang", 300.33f, "1234567",
					"清华出版社", buf));
			dataset2.add(new Book(4, "c++经典", "leno", 400.33f, "1234567",
					"清华出版社", buf));
			dataset2.add(new Book(5, "c#入门", "leno", 300.33f, "1234567",
					"汤春秀出版社", buf));

			OutputStream out2 = new FileOutputStream("E://Book.pdf");
			ex2.exportPdf(headers2, dataset2, out2);
			out2.close();
			JOptionPane.showMessageDialog(null, "pdf导出成功!");
			System.out.println("pdf导出成功！");
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}