在升级到Java 8之前，我的项目在Java 6上运行良好。当我尝试加载资源时，出现错误”意外问题：java.lang.RuntimeException：java.io.FileNotFoundException：dynamicFeature。 xsd”。。这是我的XSD的结构。
-- /saa/schemas
- ISO_191_Schmemas
-- gml.xsd
-- dynamicFeature.xsd
SAA-Features.xsd
SAA-Message.xsd
这是我的gml.xsd，其中包含dynamicFeature.xsd。
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="http://www.opengis.net/gml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml" xmlns:sch="http://www.ascc.net/xml/schematron" xmlns="http://www.w3.org/2001/XMLSchema" xmlns:xsd="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified" version="3.0.0">
<xsd:annotation>
<xsd:appinfo source="urn:opengis:specification:gml:schema-xsd:gml:v3.0.0">gml.xsd</xsd:appinfo>
<xsd:documentation>
Top level GML schema
</xsd:documentation>
</xsd:annotation>
<!-- ====================================================================== -->
<xsd:include schemaLocation="dynamicFeature.xsd"/>
<xsd:include schemaLocation="topology.xsd"/>
<xsd:include schemaLocation="coverage.xsd"/>
<xsd:include schemaLocation="coordinateReferenceSystems.xsd"/>
<xsd:include schemaLocation="observation.xsd"/>
<xsd:include schemaLocation="defaultStyle.xsd"/>
<!-- ====================================================================== -->
</xsd:schema
这是我的ResourceResolver代码，可以在Java 6上正常工作，但是在升级到Java 8之后，我们收到错误消息，它无法找到gml.xsd中包含的dynamicFeature.xsd。还可以找到仅定义了顶级架构的Schemalocations列表。每次代码都会在if语句*** if（schemaName.equals（candidate.getSchema（）））****中失败，因为仅在架构位置中定义了顶级架构名称，因此它永远都无法找到我所需要的findResource无法弄清楚它是如何工作的。
public static final String ROOT = "saa/schemas/";
public static final SchemaLocation SCHEMA_SAA_MESSAGE = new SchemaLocation("urn:us:gov:dot:faa:aim:saa", "SAA-Message.xsd");
public static final SchemaLocation SCHEMA_SAA_FEATURE = new SchemaLocation("", "SAA-Features.xsd");
public static final List<SchemaLocation> SAA_SCHEMAS;
static {
List<SchemaLocation> schemas = new ArrayList<SchemaLocation>();
schemas.add(SCHEMA_SAA_FEATURES);
schemas.add(SCHEMA_SAA_MESSAGE);
SAA_SCHEMAS = schemas;
}
EntityResolver代码：
import org.xml.sax.ext.EntityResolver2;
public class SAAEntityResolver implements EntityResolver2 {
private static final Log LOG = LogFactory.getLog(SAAEntityResolver.class);
private EntityResolver2 delegate;
private List<SchemaLocation> schemaLocations;
/**
* Constructs a new xml entity resolver specifying a search path within the classpath.
* <p>
public SAAEntityResolver(List<SchemaLocation> searchPath, EntityResolver2 delegate) {
this.delegate = delegate;
this.schemaLocations = searchPath;
}
/* (non-Javadoc)
*
* Created on Feb 9, 2010 by rcracel
* @see org.xml.sax.EntityResolver#resolveEntity(java.lang.String, java.lang.String)
*/
@Override
public InputSource resolveEntity(String publicId, String systemId) throws SAXException, IOException {
InputSource result = null;
String schemaName = systemId;
if (systemId == null && publicId == null) {
LOG.error("Cannot resolve schema, both system and public ids are null");
} else {
if (schemaName != null) {
if (schemaName.contains("/")) {
schemaName = schemaName.substring(schemaName.lastIndexOf("/") + 1);
}
for (int index = 0; index < **schemaLocations**.size() && result == null; index++) {
SchemaLocation candidate = schemaLocations.get(index);
if (schemaName.equals(candidate.getSchema())) {
URL resource = ResourceUtils.findResource(candidate.getAbsolutePath());
InputStream stream = resource.openStream();
if (stream != null) {
result = new InputSource(stream);
result.setPublicId(publicId);
result.setSystemId(resource.toString());
}
}
}
} else if (publicId != null) {
for (int index = 0; index < schemaLocations.size() && result == null; index++) {
SchemaLocation candidate = schemaLocations.get(index);
if (publicId.equals(candidate.getPublicId())) {
URL resource = ResourceUtils.findResource(candidate.getAbsolutePath());
InputStream stream = resource.openStream();
if (stream != null) {
result = new InputSource(stream);
result.setPublicId(publicId);
result.setSystemId(resource.toString());
}
}
}
}
}
if (result == null && delegate != null) {
result = delegate.resolveEntity(publicId, systemId);
}
return result;
}
* @see org.xml.sax.ext.EntityResolver2#resolveEntity(java.lang.String, java.lang.String, java.lang.String, java.lang.String)
*/
@Override
public InputSource resolveEntity(String name, String publicId, String baseURI, String systemId) throws SAXException, IOException {
LOG.error("name" + name);
LOG.error("publicId"+ publicId);
LOG.error("baseURI" + baseURI);
LOG.error("systemID" + systemId);
if (LOG.isDebugEnabled())
LOG.debug(String.format("*************** resolveEntity(\"%s\", \"%s\", \"%s\", \"%s\");", name, publicId, baseURI, systemId));
return resolveEntity(publicId, systemId);
}
这是带有findResource方法的ResouceUtils代码：
public static URL findResource(String path) {
LOG.info("inside ResourceUtils -> findResource method path value"+ path);
URL resource = ClassLoader.getSystemResource(path);
LOG.info("ResourceUtils URL1" + resource);
if (resource == null) {
LOG.info("resource null");
resource = ResourceUtils.class.getResource(path);
LOG.info("ResourceUtils URL2" + resource);
}
return resource;
}
我对此错误停留了一段时间，如果有人可以帮助我解决此错误，我们将不胜感激。我可以提供帖子中缺少的任何其他信息。
谢谢