Apache FOP.问题与西里尔字符

Question

我在Java8项目中使用Apache FOP库生成一些pdf文件。英文内容显示没有任何问题，但是俄文字符很奇怪。它们看起来像这样:Ð#огдн。

似乎这里的问题在某种程度上与编码有关，但我该如何修复它?

下面是我用来生成pdf的类:

public class PdfGenerationTools implements StreamResource.StreamSource
    {
    String content;
    public PdfGenerationTools(String content) {
        this.content = content;
    }
    @Override
    public InputStream getStream()
    {
        ByteArrayInputStream foStream =
                new ByteArrayInputStream(content.getBytes(StringTools.UTF8));
        // Basic FOP configuration. You could create this object
        // just once and keep it.
        FopFactory fopFactory = FopFactory.newInstance();
        fopFactory.setStrictValidation(false); // For an example
        // Configuration for this PDF document - mainly metadata
        FOUserAgent userAgent = getFOUserAgent(fopFactory);
        // Transform to PDF
        ByteArrayOutputStream fopOut = new ByteArrayOutputStream();
        try {
            Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF,
                    userAgent, fopOut);
            TransformerFactory factory =
                    TransformerFactory.newInstance();
            Transformer transformer = factory.newTransformer();
            Source src = new
                    javax.xml.transform.stream.StreamSource(foStream);
            Result res = new SAXResult(fop.getDefaultHandler());
            transformer.transform(src, res);
            fopOut.close();
            return new ByteArrayInputStream(fopOut.toByteArray());
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }
    private FOUserAgent getFOUserAgent(FopFactory factory)
    {
        FOUserAgent userAgent = factory.newFOUserAgent();
        userAgent.setProducer("Company");
        userAgent.setCreationDate(new Date());
        userAgent.setTitle("Printing jobs");
        userAgent.setTargetResolution(300); // DPI
        return userAgent;
    }
    public static String initDoc()
    {
        return "<?xml version='1.0' encoding='ISO-8859-1'?>"+
                "<fo:root xmlns:fo='http://www.w3.org/1999/XSL/Format'>"+
                "<fo:layout-master-set>"+
                "<fo:simple-page-master master-name='A4' margin='2cm'>"+
                "<fo:region-body />"+
                "</fo:simple-page-master>"+
                "</fo:layout-master-set>"+
                "<fo:page-sequence master-reference='A4'>"+
                "<fo:flow flow-name='xsl-region-body'>";
    }
    public static String closeDoc()
    {
        return "</fo:flow>"+
                "</fo:page-sequence>"+
                "</fo:root>";
    }
    public static String initTable()
    {
        return "<fo:block space-before.optimum="10pt"></fo:block>" +
                "<fo:table table-layout="fixed" border-width="1mm" border-style="solid">" +
                "<fo:table-column column-number="1" column-width="50%"/>" +
                "<fo:table-column column-number="2" column-width="50%"/>" +
                "<fo:table-body>";
    }
    public static String closeTable()
    {
        return "</fo:table-body>" +
                "</fo:table>";
    }
    public static String initTableRow()
    {
        return "<fo:table-row keep-together.within-page="always">";
    }
    public static String closeTableRow()
    {
        return  "</fo:table-row>";
    }
    public static String getCell(String ... args)
    {
        final StringBuilder sb = new StringBuilder();
        sb.append("<fo:table-cell padding="1mm" border-width="1mm" border-style="double">");
        for (String arg : args)
        {
            sb.append("<fo:block font-family="SansSerif">")
                    .append(arg)
                    .append("</fo:block>");
        }
        sb.append("</fo:table-cell>");
        return sb.toString();
    }
}

当我将编码从'ISO-8859-1'更改为'UTF-8'时，我的西里尔子字符串看起来像这样:'#####'。这里好像缺少字体…

Answer 1

您必须使用FOP的配置文件，该文件指示您的字体要嵌入到PDF文档中，例如:

<?xml version="1.0" encoding="UTF-8"?>
<fop version='1.0'>
    <renderers>
        <renderer mime='application/pdf'>
            <fonts>
                <!-- TTF fonts -->
                <font kerning='yes' embed-url='c:windowsfontsarial.ttf'>
                    <font-triplet name='Arial' style='normal' weight='normal' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontsarialbd.ttf'>
                    <font-triplet name='Arial' style='normal' weight='bold' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontsariali.ttf'>
                    <font-triplet name='Arial' style='italic' weight='normal' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontsarialbi.ttf'>
                    <font-triplet name='Arial' style='italic' weight='bold' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontstimes.ttf'>
                    <font-triplet name='TimesNewRoman' style='normal' weight='normal' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontstimesbd.ttf'>
                    <font-triplet name='TimesNewRoman' style='normal' weight='bold' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontstimesi.ttf'>
                    <font-triplet name='TimesNewRoman' style='italic' weight='normal' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontstimesbi.ttf'>
                    <font-triplet name='TimesNewRoman' style='italic' weight='bold' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontscour.ttf'>
                    <font-triplet name='CourierNew' style='normal' weight='normal' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontscourbd.ttf'>
                    <font-triplet name='CourierNew' style='normal' weight='bold' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontscouri.ttf'>
                    <font-triplet name='CourierNew' style='italic' weight='normal' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontscourbi.ttf'>
                    <font-triplet name='CourierNew' style='italic' weight='bold' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontsverdana.ttf'>
                    <font-triplet name='Verdana' style='normal' weight='normal' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontsverdanab.ttf'>
                    <font-triplet name='Verdana' style='normal' weight='bold' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontsverdanai.ttf'>
                    <font-triplet name='Verdana' style='italic' weight='normal' />
                </font>
                <font kerning='yes' embed-url='c:windowsfontsverdanaz.ttf'>
                    <font-triplet name='Verdana' style='italic' weight='bold' />
                </font>
            </fonts>
        </renderer>
    </renderers>
</fop>

如何使用:

// configure fopFactory as desired
FopFactory fopFactory = FopFactory.newInstance();
FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
fopFactory.setUserConfig(new File("fop.xml"));