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问题:

This is the 2nd day I spend investigating with no results. At least now, I am able to ask something very specific.

I am trying to write a valid HTML code that contains some non-Latin characters in a PDF file using iText and more specifically using ITextRenderer from Flying Saucer.

My short example/code starts by initializing a string variable doc with this value:

String doc = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><html xmlns=\"http://www.w3.org/1999/xhtml\" lang=\"en\">"
            + "<body>Some greek characters: Καλημέρα Some greek characters"
            + "</body></html>";

Here is the code that I use for debugging purposes. I save this string to HTML file and then I open it through a browser just to double check that HTML content is valid and I can still read Greek characters:

//write for debugging purposes in an html file
File newTextFile = new File("C:/work/test.html");
FileWriter fw = new FileWriter(newTextFile);
fw.write(doc);
fw.close();

Next step is to try to write this value in the PDF file. This is my code:

ITextRenderer renderer = new ITextRenderer();
    //add some fonts - if paths are not right, an exception will be thrown
    renderer.getFontResolver().addFont("c:/work/fonts/TIMES.TTF", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
    renderer.getFontResolver().addFont("c:/work/fonts/TIMESBD.TTF", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
    renderer.getFontResolver().addFont("c:/work/fonts/TIMESBI.TTF", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
    renderer.getFontResolver().addFont("c:/work/fonts/TIMESI.TTF", BaseFont.IDENTITY_H, BaseFont.EMBEDDED);


    final DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory
            .newInstance();
    documentBuilderFactory.setValidating(false);
    DocumentBuilder builder = documentBuilderFactory.newDocumentBuilder();
    builder.setEntityResolver(FSEntityResolver.instance());
    org.w3c.dom.Document document = builder.parse(new ByteArrayInputStream(
            doc.toString().getBytes("UTF-8")));

    renderer.setDocument(document, null);
    renderer.layout();
    renderer.createPDF(os);

The final outcome of my code is:

In HTML file I get: Some greek characters: Καλημέρα Some greek characters (expected)

In PDF file I get: Some greek characters: Some greek characters (unexpected - greek characters are ignored!!)

Dependencies:

java version "1.6.0_27"
itext-2.0.8.jar
de.huxhorn.lilith.3rdparty.flyingsaucer.core-renderer-8Pre2.jar

I also have been experimented with much more fonts, but I guess that my problem has nothing to do with using wrong fonts. Any help is more than welcome.

Thanx

回答1:

i am from Czech Republic, and had same problem with our national symbols! After some searching, i managed to solve it with this solution.

Specifically with (which you already have):

renderer
    .getFontResolver()
    .addFont(fonts.get(i).getFile().getPath(), 
             BaseFont.IDENTITY_H, 
             BaseFont.NOT_EMBEDDED);

and then important part in CSS:

* {
  font-family: Verdana;
/*  font-family: Times New Roman; - alternative. Without ""! */
}

It seems to me, without that css, your fonts are not used. When i remove theese lines from CSS, encoding is broken again.

Hope this will help!

回答2:

Add to your HTML something like this:

<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv='Content-Type' content='text/html; charset=UTF-8'/>
        <style type='text/css'> 
            * { font-family: 'Arial Unicode MS'; }
        </style>
    </head>
    <body>
        <span>Some text with šđčćž characters</span>
    </body>
</html>

and then add FontResolver to ITextRenderer in java code:

ITextRenderer renderer = new ITextRenderer();
renderer.getFontResolver().addFont("fonts/ARIALUNI.TTF", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);

works great for Croatian characters

jars used for generating PDF are:

core-renderer.jar
iText-2.0.8.jar

回答3:

Let the iText read a header info from your html content that it contains utf-8 content.
Add meta tag for content-type in html code with utf-8 charset encoding then run iText to generate PDF and check the result.

<?xml version="1.0" encoding="UTF-8"?>
<html xmlns="http://www.w3.org/1999/xhtml" lang="en">
 <head>
  <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 </head>
 <body>
  Some greek characters: Καλημέρα Some greek characters
 </body>
</html>

Update:
If the above is not working, then refer to ENCODING VERSUS THE DEFAULT CHARSET USED BY THE JVM in the document published at http://www.manning.com/lowagie2/iText2E_MEAP_CH02.pdf