How to fix the error: cvc-elt.1: Cannot find the declaration of element 'xsd:schema' without namespaces?
How to fix the error: cvc-elt.1: Cannot find the declaration of element 'xsd:schema' without namespaces?
我正在使用 input.xsd 架构文件：
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:element name="Mobiles">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="Mobile" type="Mobile" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:complexType name="Mobile">
<xsd:sequence>
<xsd:element name="Model" type="xsd:string"/>
<xsd:element name="OS">
<xsd:simpleType>
<xsd:restriction base="xsd:string">
<xsd:enumeration value="Android"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:element>
<xsd:element name="Origin" type="xsd:string"/>
<xsd:element name="Material" type="xsd:string"/>
<xsd:element name="Samsung" type="Samsung"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="Samsung" mixed="true">
<xsd:sequence>
<xsd:element name="Wlan">
<xsd:simpleType>
<xsd:restriction base="xsd:string">
<xsd:enumeration value="802.11"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:element>
<xsd:element name="CardSlot" type="xsd:string"/>
<xsd:element name="RadioAvailability" type="xsd:boolean" default="true"/>
<xsd:element name="BluetoothAvailability" type="xsd:boolean" default="false"/>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>
并且 input.xml 文件看起来像：
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<Mobiles
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="input.xsd">
<Mobile>
<Model>G975F</Model>
<OS>Android</OS>
<Origin>USA</Origin>
<Material>Plastic</Material>
<Samsung>
<Wlan>802.11</Wlan>
<CardSlot>MicroSD</CardSlot>
<RadioAvailability>true</RadioAvailability>
<BluetoothAvailability>true</BluetoothAvailability>
</Samsung>
</Mobile>
<Mobile>
<Model>G986</Model>
<OS>Android</OS>
<Origin>USA-Israel</Origin>
<Material>Silicon-Plastic</Material>
<Samsung>
<Wlan>802.11</Wlan>
<CardSlot>MicroSD</CardSlot>
<RadioAvailability>true</RadioAvailability>
<BluetoothAvailability>false</BluetoothAvailability>
</Samsung>
</Mobile>
<Mobile>
<Model>G770F</Model>
<OS>Android</OS>
<Origin>Israel</Origin>
<Material>Silicon-Plastic</Material>
<Samsung>
<Wlan>802.11</Wlan>
<CardSlot>MicroSD</CardSlot>
<RadioAvailability>true</RadioAvailability>
<BluetoothAvailability>false</BluetoothAvailability>
</Samsung>
</Mobile>
</Mobiles>
为了更好地理解理论，我遵循了这个 answer as example without namespaces for schema and this。
但是当我尝试验证 xsd 架构文件时，我总是在控制台本地遇到问题：
cvc-elt.1: Cannot find the declaration of element 'xsd:schema'.
org.xml.sax.SAXParseException; systemId: file:///F:/IdeaProject/TestProject/input.xsd; lineNumber: 2; columnNumber: 58; cvc-elt.1: Cannot find the declaration of element 'xsd:schema'.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:284)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1901)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:741)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:374)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:613)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3132)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:852)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:177)
at com.epam.rd.java.basic.practice7.controller.DOMController.parse(DOMController.java:96)
at com.epam.rd.java.basic.practice7.controller.DOMController.main(DOMController.java:331)
at com.epam.rd.java.basic.practice7.DOMControllerTest.main(DOMControllerTest.java:11)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access[=12=]0(ParentRunner.java:58)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)
at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:118)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:182)
at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:164)
at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:412)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
at org.gradle.internal.concurrent.ManagedExecutorImpl.run(ManagedExecutorImpl.java:48)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
at java.lang.Thread.run(Thread.java:748)
使用逻辑进行验证，例如：
public void parse(boolean validate) throws ParserConfigurationException, SAXException, IOException {
System.out.println("Invoking parse()");
// obtain DOM parser
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try{
dbf.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
dbf.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
dbf.setFeature("http://xml.org/sax/features/external-general-entities", false);
} catch(ParserConfigurationException exp){
logger.severe(MESSAGE);
logger.severe(Arrays.toString(exp.getStackTrace()));
}
// set properties for Factory
// XML document contains namespaces
dbf.setNamespaceAware(true);
// make parser validating
if (validate) {
// turn validation on
dbf.setFeature(Constants.FEATURE_TURN_VALIDATION_ON, true);
// turn on xsd validation
dbf.setFeature(Constants.FEATURE_TURN_SCHEMA_VALIDATION_ON, true);
}
DocumentBuilder db = dbf.newDocumentBuilder();
// set error handler
db.setErrorHandler(new DefaultHandler() {
@Override
public void error(SAXParseException e) throws SAXException {
// throw exception if XML document is NOT valid
throw e;
}
});
// parse XML document
Document document = db.parse(xmlFileName);
// get root element
Element root = document.getDocumentElement();
// create container
mobiles = new Mobiles();
// obtain mobiles nodes
NodeList mobileNodes = root
.getElementsByTagName(Names.MOBILE);
// process mobiles nodes
for (int j = 0; j < mobileNodes.getLength(); j++) {
Mobile question = getMobile(mobileNodes.item(j));
// add mobile to container
mobiles.getMobileList().add(question);
}
}
我检查过类似的问题，例如 ，但我没有不同的 uri http 和 https。
我也检查过这个 answer，但由于实施限制，我不能对 gradle 项目使用任何第三方依赖项（仅当它不是唯一的解决方案时）。
CoreFiling XML Schema Validator 报告关于 XML 架构和 XML 实例：
XML instance present.
XML schema present.
和
Well Formed: VALID
Schema Validation: VALID
如果需要，我可以提供更多信息。如果我做错了什么，有人可以纠正我吗？提前致谢。
错误，
cvc-elt.1: Cannot find the declaration of element xsd:schema without namespaces?
通常表示错误地尝试将 XSD 作为验证主题传递给验证器，而不是传递预期的 XML 文件。
在您的情况下，请确保 xmlFileName 用于 XML 文件，而不是 XSD。
另一方面，如果您真的想验证 XSD 本身，请参阅
- Validating XSD itself
- XML Schema to validate XML Schemas?
我正在使用 input.xsd 架构文件：
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:element name="Mobiles">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="Mobile" type="Mobile" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:complexType name="Mobile">
<xsd:sequence>
<xsd:element name="Model" type="xsd:string"/>
<xsd:element name="OS">
<xsd:simpleType>
<xsd:restriction base="xsd:string">
<xsd:enumeration value="Android"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:element>
<xsd:element name="Origin" type="xsd:string"/>
<xsd:element name="Material" type="xsd:string"/>
<xsd:element name="Samsung" type="Samsung"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="Samsung" mixed="true">
<xsd:sequence>
<xsd:element name="Wlan">
<xsd:simpleType>
<xsd:restriction base="xsd:string">
<xsd:enumeration value="802.11"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:element>
<xsd:element name="CardSlot" type="xsd:string"/>
<xsd:element name="RadioAvailability" type="xsd:boolean" default="true"/>
<xsd:element name="BluetoothAvailability" type="xsd:boolean" default="false"/>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>
并且 input.xml 文件看起来像：
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<Mobiles
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="input.xsd">
<Mobile>
<Model>G975F</Model>
<OS>Android</OS>
<Origin>USA</Origin>
<Material>Plastic</Material>
<Samsung>
<Wlan>802.11</Wlan>
<CardSlot>MicroSD</CardSlot>
<RadioAvailability>true</RadioAvailability>
<BluetoothAvailability>true</BluetoothAvailability>
</Samsung>
</Mobile>
<Mobile>
<Model>G986</Model>
<OS>Android</OS>
<Origin>USA-Israel</Origin>
<Material>Silicon-Plastic</Material>
<Samsung>
<Wlan>802.11</Wlan>
<CardSlot>MicroSD</CardSlot>
<RadioAvailability>true</RadioAvailability>
<BluetoothAvailability>false</BluetoothAvailability>
</Samsung>
</Mobile>
<Mobile>
<Model>G770F</Model>
<OS>Android</OS>
<Origin>Israel</Origin>
<Material>Silicon-Plastic</Material>
<Samsung>
<Wlan>802.11</Wlan>
<CardSlot>MicroSD</CardSlot>
<RadioAvailability>true</RadioAvailability>
<BluetoothAvailability>false</BluetoothAvailability>
</Samsung>
</Mobile>
</Mobiles>
为了更好地理解理论，我遵循了这个 answer as example without namespaces for schema and this。
但是当我尝试验证 xsd 架构文件时，我总是在控制台本地遇到问题：
cvc-elt.1: Cannot find the declaration of element 'xsd:schema'.
org.xml.sax.SAXParseException; systemId: file:///F:/IdeaProject/TestProject/input.xsd; lineNumber: 2; columnNumber: 58; cvc-elt.1: Cannot find the declaration of element 'xsd:schema'.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:396)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:284)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1901)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:741)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:374)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:613)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3132)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:852)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:842)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:771)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:243)
at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:339)
at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:177)
at com.epam.rd.java.basic.practice7.controller.DOMController.parse(DOMController.java:96)
at com.epam.rd.java.basic.practice7.controller.DOMController.main(DOMController.java:331)
at com.epam.rd.java.basic.practice7.DOMControllerTest.main(DOMControllerTest.java:11)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access[=12=]0(ParentRunner.java:58)
at org.junit.runners.ParentRunner.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.runTestClass(JUnitTestClassExecutor.java:110)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:58)
at org.gradle.api.internal.tasks.testing.junit.JUnitTestClassExecutor.execute(JUnitTestClassExecutor.java:38)
at org.gradle.api.internal.tasks.testing.junit.AbstractJUnitTestClassProcessor.processTestClass(AbstractJUnitTestClassProcessor.java:62)
at org.gradle.api.internal.tasks.testing.SuiteTestClassProcessor.processTestClass(SuiteTestClassProcessor.java:51)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.internal.dispatch.ContextClassLoaderDispatch.dispatch(ContextClassLoaderDispatch.java:33)
at org.gradle.internal.dispatch.ProxyDispatchAdapter$DispatchingInvocationHandler.invoke(ProxyDispatchAdapter.java:94)
at com.sun.proxy.$Proxy2.processTestClass(Unknown Source)
at org.gradle.api.internal.tasks.testing.worker.TestWorker.processTestClass(TestWorker.java:118)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:36)
at org.gradle.internal.dispatch.ReflectionDispatch.dispatch(ReflectionDispatch.java:24)
at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:182)
at org.gradle.internal.remote.internal.hub.MessageHubBackedObjectConnection$DispatchWrapper.dispatch(MessageHubBackedObjectConnection.java:164)
at org.gradle.internal.remote.internal.hub.MessageHub$Handler.run(MessageHub.java:412)
at org.gradle.internal.concurrent.ExecutorPolicy$CatchAndRecordFailures.onExecute(ExecutorPolicy.java:64)
at org.gradle.internal.concurrent.ManagedExecutorImpl.run(ManagedExecutorImpl.java:48)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.gradle.internal.concurrent.ThreadFactoryImpl$ManagedThreadRunnable.run(ThreadFactoryImpl.java:56)
at java.lang.Thread.run(Thread.java:748)
使用逻辑进行验证，例如：
public void parse(boolean validate) throws ParserConfigurationException, SAXException, IOException {
System.out.println("Invoking parse()");
// obtain DOM parser
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
try{
dbf.setFeature("http://xml.org/sax/features/external-parameter-entities", false);
dbf.setFeature("http://apache.org/xml/features/disallow-doctype-decl", true);
dbf.setFeature("http://xml.org/sax/features/external-general-entities", false);
} catch(ParserConfigurationException exp){
logger.severe(MESSAGE);
logger.severe(Arrays.toString(exp.getStackTrace()));
}
// set properties for Factory
// XML document contains namespaces
dbf.setNamespaceAware(true);
// make parser validating
if (validate) {
// turn validation on
dbf.setFeature(Constants.FEATURE_TURN_VALIDATION_ON, true);
// turn on xsd validation
dbf.setFeature(Constants.FEATURE_TURN_SCHEMA_VALIDATION_ON, true);
}
DocumentBuilder db = dbf.newDocumentBuilder();
// set error handler
db.setErrorHandler(new DefaultHandler() {
@Override
public void error(SAXParseException e) throws SAXException {
// throw exception if XML document is NOT valid
throw e;
}
});
// parse XML document
Document document = db.parse(xmlFileName);
// get root element
Element root = document.getDocumentElement();
// create container
mobiles = new Mobiles();
// obtain mobiles nodes
NodeList mobileNodes = root
.getElementsByTagName(Names.MOBILE);
// process mobiles nodes
for (int j = 0; j < mobileNodes.getLength(); j++) {
Mobile question = getMobile(mobileNodes.item(j));
// add mobile to container
mobiles.getMobileList().add(question);
}
}
我检查过类似的问题，例如 http 和 https。
我也检查过这个 answer，但由于实施限制，我不能对 gradle 项目使用任何第三方依赖项（仅当它不是唯一的解决方案时）。
CoreFiling XML Schema Validator 报告关于 XML 架构和 XML 实例：
XML instance present.
XML schema present.
和
Well Formed: VALID
Schema Validation: VALID
如果需要，我可以提供更多信息。如果我做错了什么，有人可以纠正我吗？提前致谢。
错误，
cvc-elt.1: Cannot find the declaration of elementxsd:schemawithout namespaces?
通常表示错误地尝试将 XSD 作为验证主题传递给验证器，而不是传递预期的 XML 文件。
在您的情况下，请确保 xmlFileName 用于 XML 文件，而不是 XSD。
另一方面，如果您真的想验证 XSD 本身，请参阅
- Validating XSD itself
- XML Schema to validate XML Schemas?