Itext中文处理pdf(转)（改）

心已赠人 2022-07-21 02:16 209阅读 0赞

**//注释：多谢这篇文章给我的启示，让我找到了输出中文的字体改好看的办法。将我在之前文章中谈到的PdfViewSupportAsian中的  smallFont = FontFactory.getFont( "STSongStd-Light" ,  "UniGB-UCS2-H" , false);改为smallFont = FontFactory.getFont( "STSongStd-Light" ,  "UniGB-UCS2-H" , false);**

** **

**[Itext中文处理pdf(转)][Itext_pdf]**

**文章分类:[Java编程][Java]**

[http://quicker.javaeye.com/blog/549876][http_quicker.javaeye.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：

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][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：

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：

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.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.javaeye.com/blog/577816][http_xiaolongfeixiang.javaeye.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][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");

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．

[iText-2.1.3.jar][] (1 MB)下载次数: 157

[iTextAsian.jar][] (324 KB)下载次数: 197

[iText.jar][] (1 MB)下载次数: 93

[更改.rar][.rar] (309.7 KB)下载次数: 143

[good.pdf][] (1.7 KB)下载次数: 58

收藏于 2011-03-12

[Itext_pdf]: http://qingfengxia.javaeye.com/blog/684288
[Java]: http://www.javaeye.com/blogs/category/java
[http_quicker.javaeye.com_blog_549876]: http://quicker.javaeye.com/blog/549876
[http_itextpdf.com_history.php]: http://itextpdf.com/history.php
[http_xiaolongfeixiang.javaeye.com_blog_577816]: http://xiaolongfeixiang.javaeye.com/blog/577816
[http_www.itextpdf.com_examples_index.php_page_example_id_214]: http://www.itextpdf.com/examples/index.php?page=example&id=214
[iText-2.1.3.jar]: http://dl.javaeye.com/topics/download/fff24c5f-deee-344a-882d-b2bf3bc18a51
[iTextAsian.jar]: http://dl.javaeye.com/topics/download/45f1c0e1-cc7c-3d07-a7e9-e85b27a0dc13
[iText.jar]: http://dl.javaeye.com/topics/download/0246169e-891d-33e6-a77b-83cb5f338543
[.rar]: http://dl.javaeye.com/topics/download/744b61ce-3464-344b-9f22-93c97f8c4332
[good.pdf]: http://dl.javaeye.com/topics/download/364c3e73-85ff-3113-b263-67a16533ef09