我有一个参考其他xml文件的书xml文件。当我尝试在book.xml文件上运行xslt时，代码中的EntityResolver解析了dtd路径。但是，对于正在合并的子级xml文件，无法解析dtd路径。
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE bookmap PUBLIC "-//OASIS//DTD DITA BookMap//EN" "bookmap.dtd">
<bookmap>
<booktitle>
<mainbooktitle>sample book</mainbooktitle>
</booktitle>
<part navtitle="Overview">
<topicref href="../topics/introduction.dita"/>
<topicref href="../topics/install.dita"/>
</part>
</bookmap>
`
public class XMLProcessor {
public void transform(String xmlf, String xslf) throws TransformerConfigurationException, TransformerException, org.xml.sax.SAXException, IOException{
org.xml.sax.XMLReader reader = XMLReaderFactory.createXMLReader();
Transformer transformer;
TransformerFactory factory = TransformerFactory.newInstance();
StreamSource stylesheet = new StreamSource(xslf);
//Source source = StreamSource(xmlf);
//SAXSource source = new SAXSource(new InputSource(xmlf));
// org.xml.sax.XMLReader reader = XMLReaderFactory.createXMLReader();
EntityResolver ent = new EntityResolver() {
@Override
public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
System.out.println(publicId);
System.out.println(systemId);
if(publicId.equals("-//OASIS//DTD DITA BookMap//EN")){
return new InputSource("file:///D:/sample/dtd/bookmap.dtd");
}
return null;
}
};
// sour.setPublicId("file:///D:/sample/dtd/bookmap/dtd/bookmap.dtd");
reader.setEntityResolver(ent);
SAXSource source = new SAXSource(reader, new InputSource(xmlf));
//reader.parse(new InputSource(xmlf));
//StreamSource sourcedoc = new StreamSource(xmlf);
transformer = factory.newTransformer(stylesheet);
try {
transformer.transform(source, new StreamResult(new FileWriter("D:\\sample\\out\\result.xml")));
} catch (IOException ex) {
Logger.getLogger(XMLProcessor.class.getName()).log(Level.SEVERE, null, ex);
}
}
}`
`
<?xml version="1.0" encoding="UTF-8"?>
<pages xmlns:mf="urn:mf">
<parentpage>
<parentpagename>sample book</parentpagename>
</parentpage>
<part>
<partname>Overview</partname>
<text/>
<level-2>
<concept xmlns:ditaarch="http://dita.oasis-open.org/architecture/2005/"
id="introduction" ditaarch:DITAArchVersion="1.3"
domains="(topic concept) (topic abbrev-d) a(props deliveryTarget) (topic equation-d) (topic hazard-d) (topic hi-d) (topic indexing-d) (topic markup-d) (topic mathml-d) (topic pr-d) (topic relmgmt-d) (topic sw-d) (topic svg-d) (topic ui-d) (topic ut-d) (topic markup-d xml-d) "
class="- topic/topic concept/concept ">
<title class="- topic/title ">Introduction</title>
<shortdesc class="- topic/shortdesc "/>
<conbody class="- topic/body concept/conbody ">
<p class="- topic/p ">Sample introduction</p>
</conbody>
</concept>
</level-2>
<text/>
<level-2>
<task xmlns:ditaarch="http://dita.oasis-open.org/architecture/2005/" id="install"
ditaarch:DITAArchVersion="1.3"
domains="(topic task) (topic abbrev-d) a(props deliveryTarget) (topic equation-d) (topic hazard-d) (topic hi-d) (topic indexing-d) (topic markup-d) (topic mathml-d) (topic pr-d) (topic relmgmt-d) (topic sw-d) (topic svg-d) (topic ui-d) (topic ut-d) (topic markup-d xml-d) (topic task strictTaskbody-c) "
class="- topic/topic task/task ">
<title class="- topic/title ">Install</title>
<shortdesc class="- topic/shortdesc "/>
<taskbody class="- topic/body task/taskbody ">
<context class="- topic/section task/context ">
<p class="- topic/p ">Download xyz installer from here. </p>
</context>
<steps class="- topic/ol task/steps ">
<step class="- topic/li task/step ">
<cmd class="- topic/ph task/cmd ">Double-click the downloader
installer.</cmd>
</step>
<step class="- topic/li task/step ">
<cmd class="- topic/ph task/cmd ">Do this.</cmd>
</step>
<step class="- topic/li task/step ">
<cmd class="- topic/ph task/cmd ">Do that</cmd>
</step>
</steps>
</taskbody>
</task>
</level-2>
</part>
</pages>
`
运行XSLT时，显示以下错误消息。当我将dtd文件移动到主题文件夹时，错误消失了。
Warning XTDE0540: Ambiguous rule match for /bookmap/booktitle[1] Matches both "element(Q{}booktitle)" on line 54 of >file:///D:/sample/xsl/merge.xsl and "element(Q{}booktitle)" on line 18 of >file:///D:/sample/xsl/merge.xsl Warning at char 11 inxsl：apply-templates / @ select> merge.xsl的第30行： FODC0002：XML解析器处理报告的I / O错误 文件：/ D：/sample/sampledoc/topics/introduction.dita： D：\ sample \ sampledoc \ topics \ concept.dtd（系统找不到
已指定文件）在xsl：apply-templates / @ select的char 11处发出警告，此行> merge.xsl的第104列：FODC0002：I / O错误 XML解析器处理文件：/ D：/sample/sampledoc/topics/install.dita： D：\ sample \ sampledoc \ topics \ task.dtd（系统找不到> file 指定）
答案 0 :(得分：1)
您可以在Transformer上设置URIResolver，当您的XSLT代码调用doc（）或document（）来获取引用的XML文件时，将调用URIResolver。然后，URIResolver可以在用于解析这些文件的XML解析器上设置EntityResolver。
或者，您可以使用Apache XMLResolver来完成所有这些工作，该Apache XMLResolver通过引用OASIS定义的格式的目录文件在XSLT和XML级别上同时引用URI。
答案 1 :(得分：0)
感谢迈克尔，我可以解决此问题。
在类路径中添加了CatalogManager.properties文件。
使用所有公共ID创建了catalog.xml。
public class XMLProcessor {
public void transform(String xmlf, String xslf, String outpath) throws TransformerConfigurationException, TransformerException, org.xml.sax.SAXException, IOException{
org.xml.sax.XMLReader reader = XMLReaderFactory.createXMLReader();
Transformer transformer = null;
TransformerFactory factory = TransformerFactory.newInstance();
StreamSource stylesheet = new StreamSource(xslf);
CatalogResolver cr = new CatalogResolver();
reader.setEntityResolver(cr);
factory.setURIResolver(cr);
SAXSource source = new SAXSource(reader, new InputSource(xmlf));
transformer = factory.newTransformer(stylesheet);
try {
transformer.transform(source, new StreamResult(new FileWriter(outpath)));
} catch (IOException ex) {
Logger.getLogger(XMLProcessor.class.getName()).log(Level.SEVERE, null, ex);
}
}
}