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https://issues.apache.org/jira/browse/FOP-3054?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17499524#comment-17499524
 ] 

Simon Steiner commented on FOP-3054:
------------------------------------

Can you try

{code}

public class MyResolver {
    public static void main(String[] args) throws Exception {
        String fo = "<?xml version=\"1.0\" encoding=\"utf-8\"?>\n" +
                "<fo:root xmlns:fo=\"http://www.w3.org/1999/XSL/Format\"\n"; +
                "  
xmlns:fox=\"http://xmlgraphics.apache.org/fop/extensions\";>\n" +
                "  <fo:layout-master-set>\n" +
                "    <fo:simple-page-master master-name=\"simple\" 
page-height=\"27.9cm\" page-width=\"21.6cm\">\n" +
                "      <fo:region-body />\n" +
                "    </fo:simple-page-master>\n" +
                "  </fo:layout-master-set>\n" +
                "  <fo:page-sequence master-reference=\"simple\">\n" +
                "    <fo:flow flow-name=\"xsl-region-body\">\n" +
                "<fo:block font-family=\"DejaVuSans\">test</fo:block> " +
                "</fo:flow>\n" +
                "  </fo:page-sequence>\n" +
                "</fo:root>";

        String fopxconf = "<fop>\n" +
                "  <renderers>\n" +
                "    <renderer mime=\"application/pdf\">\n" +
                "      <fonts>\n" +
                "        <font kerning=\"yes\" 
embed-url=\"classpath:ARIAL.TTF\">\n" +
                "          <font-triplet name=\"DejaVuSans\" style=\"normal\" 
weight=\"normal\"/>\n" +
                "        </font>\n" +
                "      </fonts>\n" +
                "    </renderer>\n" +
                "  </renderers>\n" +
                "</fop>";

        DefaultConfigurationBuilder cfgBuilder = new 
DefaultConfigurationBuilder();
        Configuration config = cfgBuilder.build(new 
ByteArrayInputStream(fopxconf.getBytes()));
        ResourceResolver rr = new MyResourceResolver();
        FopFactoryBuilder fopFactoryBuilder = new FopFactoryBuilder(new 
File(".").toURI(), rr);
        fopFactoryBuilder.setConfiguration(config);
        fopFactoryBuilder.getFontManager().setResourceResolver(
                ResourceResolverFactory.createInternalResourceResolver(new 
File(".").toURI(), rr));
        FopFactory fopFactory = fopFactoryBuilder.build();
        FOUserAgent foUserAgent = fopFactory.newFOUserAgent();
        FileOutputStream fos = new FileOutputStream("/tmp/out.pdf");
        Fop fop = fopFactory.newFop("application/pdf", foUserAgent, fos);
        TransformerFactory factory = TransformerFactory.newInstance();
        Transformer transformer = factory.newTransformer();
        Source src = new StreamSource(new ByteArrayInputStream(fo.getBytes()));
        Result res = new SAXResult(fop.getDefaultHandler());
        transformer.transform(src, res);
        fos.close();
    }

    static class MyResourceResolver implements ResourceResolver {
        public Resource getResource(URI uri) throws IOException {
            if ("classpath".equals(uri.getScheme())) {
                String path = uri.toASCIIString().replace(uri.getScheme() + 
":", "");
                InputStream is = getClass().getResourceAsStream(path);
                if (is == null) {
                    throw new IOException(uri.toASCIIString());
                }
                return new Resource(is);
            }
            return new Resource(uri.toURL().openStream());
        }

        public OutputStream getOutputStream(URI uri) throws IOException {
            return new FileOutputStream(new File(uri));
        }
    }
}

{code}

> FOP Customer Resolver not invoked in version 2.7
> ------------------------------------------------
>
>                 Key: FOP-3054
>                 URL: https://issues.apache.org/jira/browse/FOP-3054
>             Project: FOP
>          Issue Type: Bug
>    Affects Versions: 2.7
>            Reporter: tntim96
>            Assignee: Simon Steiner
>            Priority: Major
>
> The following FOP config and customer resolver works with FOP 2.6
> {code:java}
> ResourceResolver rr = ResourceResolverFactory
>     .createTempAwareResourceResolver(new InMemoryTempResourceResolver(), new 
> CustomResolver());
> {code}
> {code:java}
> class CustomResolver implements ResourceResolver {
>   public org.apache.xmlgraphics.io.Resource getResource(URI uri) throws 
> IOException {
>     if (uri.toString().startsWith("classpath:")) {
>       String actualPath = uri.toString().substring("classpath:".length());
>       try {
>         ClassPathResource resource = new ClassPathResource(actualPath);
>         InputStream resourceAsStream = resource.getInputStream();
> {code}
> {code:java}
> <?xml version="1.0" encoding="utf-8" ?>
> <fop>
>   <renderers>
>     <renderer mime="application/pdf">
>       <fonts>
>         <font kerning="yes" 
> embed-url="classpath:/somepath/DejaVuSans-Regular.ttf">
>           <font-triplet name="DejaVuSans" style="normal" weight="normal"/>
>         </font>
>       </fonts>
>     </renderer>
>   </renderers>
> </fop> {code}
> ...but with 2.7 we get the error:
> {noformat}
> 16:04:03.006 [main] ERROR org.apache.fop.fonts.LazyFont - Failed to read font 
> file classpath:/somepath/DejaVuSans-Regular.ttf unknown protocol: classpath
> java.net.MalformedURLException: unknown protocol: classpath
>     at java.net.URL.<init>(URL.java:600)
>     at java.net.URL.<init>(URL.java:490)
>     at java.net.URL.<init>(URL.java:439)
>     at java.net.URI.toURL(URI.java:1089)
>     at 
> org.apache.fop.apps.io.ResourceResolverFactory$NormalResourceResolver.getResource(ResourceResolverFactory.java:224)
>     at 
> org.apache.fop.apps.io.ResourceResolverFactory$TempAwareResourceResolver.getResource(ResourceResolverFactory.java:152)
>     at 
> org.apache.fop.apps.io.ResourceResolverFactory$DefaultResourceResolver.getResource(ResourceResolverFactory.java:121)
>     at 
> org.apache.fop.apps.io.InternalResourceResolver.getResource(InternalResourceResolver.java:92)
>     at org.apache.fop.fonts.truetype.OFFontLoader.read(OFFontLoader.java:113)
>     at org.apache.fop.fonts.truetype.OFFontLoader.read(OFFontLoader.java:103)
>     at org.apache.fop.fonts.FontLoader.getFont(FontLoader.java:126)
>     at org.apache.fop.fonts.FontLoader.loadFont(FontLoader.java:110)
>     at org.apache.fop.fonts.LazyFont.load(LazyFont.java:121)
>     at org.apache.fop.fonts.LazyFont.getAscender(LazyFont.java:237)
>     at org.apache.fop.fonts.Font.getAscender(Font.java:120)
>     at 
> org.apache.fop.layoutmgr.BlockLayoutManager.initialize(BlockLayoutManager.java:82)
>     at 
> org.apache.fop.layoutmgr.AbstractLayoutManager.getChildLM(AbstractLayoutManager.java:118)
>     at 
> org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:128)
>     at 
> org.apache.fop.layoutmgr.FlowLayoutManager.getNextKnuthElements(FlowLayoutManager.java:69)
>     at 
> org.apache.fop.layoutmgr.PageBreaker.getNextKnuthElements(PageBreaker.java:252)
>     at 
> org.apache.fop.layoutmgr.AbstractBreaker.getNextBlockList(AbstractBreaker.java:675)
> {noformat}
> It seems like our custom resolver is no longer invoked.



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