Java和iText导出pdf文档

绝地灬酷狼 2024-02-17 14:51 67阅读 0赞

一：工程截图：

![SouthEast][]

二：项目运行截图：

![SouthEast 1][]

三：源代码：

Book.java

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;
    	}
    
    }

Student.java

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;
    	}
    
    }

StrHelp.java

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;
    		}
    	}
    	
    	
    }

PdfParagraph.java

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;
    	}
    
    }

ExportPdf.java

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JAVA的反射机制，可以将放置在JAVA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();
    		}
    	}
    }

[SouthEast]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/efb1cd67725647478f6ccf3b4c1fa437.png
[SouthEast 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/01/30/ace00ee8a6d444b7be2239198643ae95.png