我为 JavaHelp 的文件编写了一个 XML 解析器,toc.xml
以拦截我在tocitem
标记中使用的一些被 JavaHelp 忽略的属性。如下toc.xml
所示:
<?xml version='1.0' encoding='ISO-8859-1' ?>
<!DOCTYPE toc
PUBLIC "-//Sun Microsystems Inc.//DTD JavaHelp TOC Version 2.0//EN"
"http://java.sun.com/products/javahelp/toc_2_0.dtd">
<toc version="2.0">
<tocitem text="Introduction" target="intro" action="myapp.help.introAction"/>
</toc>
我正在toc.xml
使用标准 SAX 解析器进行解析。解析文件时,出现以下异常:
myapp.help.TOCTreeFactory[WARN]: Failed to load TOC file from 'jar:file:/home/samad/myapp.jar!/workflow-help/toc.xml'
Caused by:
http://java.sun.com/javase/technologies/desktop/javahelp/toc_2_0.dtd
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startEntity(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLEntityManager.startDTDEntity(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDTDScannerImpl.setInputSource(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.dispatch(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$DTDDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at myapp.help.TOCTreeFactory.createTree(TOCTreeFactory.java:43)
...
我打开网址http://java.sun.com/javase/technologies/desktop/javahelp/toc_2_0.dtd
,我得到一个 404。
我该如何解决这个问题?我尝试下载 JavaHelp 分发包,但它不包含toc_2_0.dtd
SAX 所需的文件。