Itext中文处理pdf(转)

http://quicker.iteye.com/blog/549876

Itext中文处理：

在Itext中的中文处理随着Itext的版本变化，采取的方法也在变化。

首先我来演示一下利用Itext-2.1.3.jar与iTextAsian.jar两个包来解决中文问题。

附件中有所需要的包：

示例代码：

<SPAN style="FONT-SIZE: small">package com.lwf.pdf.test;
import java.awt.Color;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Font;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfWriter;


public class HelloWord {

    public static void main(String[] args) {

        try {
            Document doc = new Document();
            PdfWriter.getInstance(doc, new FileOutputStream("c:\\good.pdf"));
            doc.open();
            BaseFont bfChinese = BaseFont.createFont( "STSongStd-Light" ,  "UniGB-UCS2-H" ,  false );
            Font fontChinese =  new  Font(bfChinese  ,  12 , Font.NORMAL, Color.GREEN);
            Paragraph pf = new Paragraph("eee");
            pf.add(new Paragraph("我们的家好大的家",fontChinese));
            pf.add(new Paragraph("sfsfsf"));
            doc.add(pf);

            doc.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (DocumentException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

</SPAN>

package com.lwf.pdf.test;
import java.awt.Color;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Font;
import com.lowagie.text.Paragraph;
import com.lowagie.text.pdf.BaseFont;
import com.lowagie.text.pdf.PdfWriter;


public class HelloWord {
	
	public static void main(String[] args) {

		try {
			Document doc = new Document();
			PdfWriter.getInstance(doc, new FileOutputStream("c:\\good.pdf"));
			doc.open();
			BaseFont bfChinese = BaseFont.createFont( "STSongStd-Light" ,  "UniGB-UCS2-H" ,  false );
			Font fontChinese =  new  Font(bfChinese  ,  12 , Font.NORMAL, Color.GREEN);
			Paragraph pf = new Paragraph("eee");
			pf.add(new Paragraph("我们的家好大的家",fontChinese));
			pf.add(new Paragraph("sfsfsf"));
			doc.add(pf);
			
			doc.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (DocumentException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}

 

上面代码测试环境是：JDK1.4编译环境也为1.4，当然在以后的JDK版本中测试也是没问题的。

 

好了，现在最新的Itext版本为Itext 5.0,附件中iText.jar即为该版本。以下为Itext5.0的修改：

http://itextpdf.com/history.php

关注两句话：

From now on, the iText.jar is compiled using Java 5 (instead of with the JDK 1.4).

The package names have changed from com.lowagie to com.itextpdf.

上面两句话第一说明itext5.0用于JDK1.5以及之后的版本。第二句更改了包名。

好了，如果我现在的程序使用iText.jar+iTextAsian.jar运行下面程序：

<SPAN style="FONT-SIZE: small">package com.lwf.pdf.test;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfWriter;


public class HelloWord {

    public static void main(String[] args) {

        try {
            Document doc = new Document();
            PdfWriter.getInstance(doc, new FileOutputStream("c:\\good.pdf"));
            doc.open();
            BaseFont bfChinese = BaseFont.createFont( "STSongStd-Light" ,  "UniGB-UCS2-H" ,  false );
            //Font fontChinese =  new  Font(bfChinese,12,Font.NORMAL,Color.GREEN);
            Font fontChinese =  new  Font(bfChinese  ,  12 , Font.NORMAL, BaseColor.GREEN);

            Paragraph pf = new Paragraph("eee");
            pf.add(new Paragraph("我们的家好大的家",fontChinese));
            pf.add(new Paragraph("sfsfsf"));
            doc.add(pf);

            doc.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (DocumentException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

</SPAN>

package com.lwf.pdf.test;

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;

import com.itextpdf.text.BaseColor;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Font;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfWriter;


public class HelloWord {
	
	public static void main(String[] args) {

		try {
			Document doc = new Document();
			PdfWriter.getInstance(doc, new FileOutputStream("c:\\good.pdf"));
			doc.open();
			BaseFont bfChinese = BaseFont.createFont( "STSongStd-Light" ,  "UniGB-UCS2-H" ,  false );
			//Font fontChinese =  new  Font(bfChinese,12,Font.NORMAL,Color.GREEN);
			Font fontChinese =  new  Font(bfChinese  ,  12 , Font.NORMAL, BaseColor.GREEN);   

			Paragraph pf = new Paragraph("eee");
			pf.add(new Paragraph("我们的家好大的家",fontChinese));
			pf.add(new Paragraph("sfsfsf"));
			doc.add(pf);
			
			doc.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (DocumentException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}

}

 会报以下错误：

<SPAN style="FONT-SIZE: small">com.itextpdf.text.DocumentException: No message found for font.1.with.2.is.not.recognized
    at com.itextpdf.text.pdf.BaseFont.createFont(Unknown Source)
    at com.itextpdf.text.pdf.BaseFont.createFont(Unknown Source)
    at com.itextpdf.text.pdf.BaseFont.createFont(Unknown Source)
    at com.lwf.pdf.test.HelloWord.main(HelloWord.java:24)
</SPAN>

com.itextpdf.text.DocumentException: No message found for font.1.with.2.is.not.recognized
	at com.itextpdf.text.pdf.BaseFont.createFont(Unknown Source)
	at com.itextpdf.text.pdf.BaseFont.createFont(Unknown Source)
	at com.itextpdf.text.pdf.BaseFont.createFont(Unknown Source)
	at com.lwf.pdf.test.HelloWord.main(HelloWord.java:24)

 

这是为什么呢？

不难发现上面两个测试只是更改了iText包。而iTextAsian.jar只是包含了亚洲国家的文字信息。打开iTextAsian.jar发现它采用了与原来iText-2.1.3.jar一样的包名：com.lowagie.text.Font而现在的iText5.0包名已经改为了com.itextpdf.text.Font，显然我们更一下包名就可以解决问题。在winrar中把对应包名重命名加进来即可。我把改好的jar放在附件的更改.rar中。好了，那么现在使用iText.jar+更改.rar中的iTextAsian.jar测试就不会报错了。

 

其实这个问题也有文章谈到，如：http://xiaolongfeixiang.iteye.com/blog/577816

 

我在itext官方网站上，查iTextAsian，发现这样的文章http://www.itextpdf.com/examples/index.php?page=example&id=214

显然，它是一个示例。那么同样使用iText5.0+更改后的iTextAsian包，下面有另一种实现方法：

/*
 * This class is part of the book "iText in Action - 2nd Edition"
 * written by Bruno Lowagie (ISBN: 9781935182610)
 * For more info, go to: http://itextpdf.com/examples/
 * This example only works with the AGPL version of iText.
 */



import java.io.FileOutputStream;
import java.io.IOException;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.FontFactory;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.FontSelector;
import com.itextpdf.text.pdf.PdfWriter;

/**
 * This example was written by Bruno Lowagie. It is part of the book 'iText in
 * Action' by Manning Publications.
 * ISBN: 1932394796
 * http://www.1t3xt.com/docs/book.php
 * http://www.manning.com/lowagie/
 */

public class FontSelectionExample {

    /** The resulting PDF file. */
    public static final String RESULT
        = "results/part3/chapter11/font_selection.pdf";
    /** Some text */
    public static final String TEXT
        = "These are the protagonists in 'Hero', a movie by Zhang Yimou:\n"
            + "\u7121\u540d (Nameless), \u6b98\u528d (Broken Sword), "
            + "\u98db\u96ea (Flying Snow), \u5982\u6708 (Moon), "
            + "\u79e6\u738b (the King), and \u9577\u7a7a (Sky)." +
                    "中华人民共和国万岁劳动人民是光荣的，岁月峥嵘，百舸争流" ;

    /**
     * Creates a PDF document.
     * @param filename the path to the new PDF document
     * @throws DocumentException
     * @throws IOException
     * @throws    DocumentException
     * @throws    IOException
     */
    public void createPdf(String filename) throws IOException, DocumentException {
        // step 1
        Document document = new Document(PageSize.A4);
        // step 2
        PdfWriter.getInstance(document, new FileOutputStream(filename));
        // step 3: we open the document
        document.open();
        // step 4:
        FontSelector selector = new FontSelector();
        selector.addFont(FontFactory.getFont(FontFactory.TIMES_ROMAN, 12));
//      selector.addFont(FontFactory.getFont("MSung-Light",
//          "UniCNS-UCS2-H", BaseFont.NOT_EMBEDDED));
//
        selector.addFont(FontFactory.getFont("STSongStd-Light",
                "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED));


        Phrase ph = selector.process(TEXT);
        document.add(new Paragraph(ph));
        // step 5: we close the document
        document.close();
    }

    /**
     * Main method.
     *
     * @param    args    no arguments needed
     * @throws DocumentException
     * @throws IOException
     */
    public static void main(String[] args) throws IOException, DocumentException {
        new FontSelectionExample().createPdf("c:/good.pdf");
    }
}

/*
 * This class is part of the book "iText in Action - 2nd Edition"
 * written by Bruno Lowagie (ISBN: 9781935182610)
 * For more info, go to: http://itextpdf.com/examples/
 * This example only works with the AGPL version of iText.
 */



import java.io.FileOutputStream;
import java.io.IOException;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.FontFactory;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.FontSelector;
import com.itextpdf.text.pdf.PdfWriter;

/**
 * This example was written by Bruno Lowagie. It is part of the book 'iText in
 * Action' by Manning Publications. 
 * ISBN: 1932394796
 * http://www.1t3xt.com/docs/book.php 
 * http://www.manning.com/lowagie/
 */

public class FontSelectionExample {

    /** The resulting PDF file. */
    public static final String RESULT
        = "results/part3/chapter11/font_selection.pdf";
    /** Some text */
    public static final String TEXT
        = "These are the protagonists in 'Hero', a movie by Zhang Yimou:\n"
			+ "\u7121\u540d (Nameless), \u6b98\u528d (Broken Sword), "
			+ "\u98db\u96ea (Flying Snow), \u5982\u6708 (Moon), "
			+ "\u79e6\u738b (the King), and \u9577\u7a7a (Sky)." +
					"中华人民共和国万岁劳动人民是光荣的，岁月峥嵘，百舸争流" ;

    /**
     * Creates a PDF document.
     * @param filename the path to the new PDF document
     * @throws DocumentException 
     * @throws IOException 
     * @throws    DocumentException 
     * @throws    IOException
     */
	public void createPdf(String filename) throws IOException, DocumentException {
		// step 1
		Document document = new Document(PageSize.A4);
		// step 2
		PdfWriter.getInstance(document, new FileOutputStream(filename));
		// step 3: we open the document
		document.open();
		// step 4:
		FontSelector selector = new FontSelector();
		selector.addFont(FontFactory.getFont(FontFactory.TIMES_ROMAN, 12));
//		selector.addFont(FontFactory.getFont("MSung-Light",
//			"UniCNS-UCS2-H", BaseFont.NOT_EMBEDDED));
//		
		selector.addFont(FontFactory.getFont("STSongStd-Light",
				"UniGB-UCS2-H", BaseFont.NOT_EMBEDDED));
			
		
		Phrase ph = selector.process(TEXT);
		document.add(new Paragraph(ph));
		// step 5: we close the document
		document.close();
	}

    /**
     * Main method.
     *
     * @param    args    no arguments needed
     * @throws DocumentException 
     * @throws IOException
     */
	public static void main(String[] args) throws IOException, DocumentException {
		new FontSelectionExample().createPdf("c:/good.pdf");
	}
}

 呵呵，我只是把示例代码改了一下，那么在Ｃ盘就会生成一个名为good.pdf的文件．内容在附件里．

评论

2 楼 kuge6688 2012-07-09  

我的中文还不显示啊。。。。。。。。。。。。。。。求

1 楼 xmllong 2010-08-18  

奇怪，第一个代码例子就不行，只输出start ok,中间的中文“我们大家。。。”没有输出呀