我当前正在使用XSD验证xml。这部分工作正常,我的问题是我想获取无效的标记/值的元素。
InputSource is = new InputSource();
is.setCharacterStream(new StringReader(xml));
XMLStreamReader reader = null;
SchemaFactory factory=SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = factory.newSchema(xsdschemalocation);
Validator validator = schema.newValidator();
try
{
reader = XMLInputFactory.newInstance().createXMLStreamReader(new StreamSource(new StringReader(xml)));
} catch (XMLStreamException ex)
{
LogController.getLogger().logSEVERE("Unable to create the streamreader from the xml source", ex.getLocalizedMessage());
return false;
}
try
{
validator.validate(new StAXSource(reader));
}
catch (IOException ex)
{
LogController.getLogger().logSEVERE("IOException in the validatation has been caused as the reader has become null", ex.getLocalizedMessage());
return false;
}
catch(SAXException saxe)
{
LogController.getLogger().logWARNING("Their is a validation error with the xml", saxe.getLocalizedMessage());
//*****HERE I WANT THE TAG THAT HAS THE ERROR
ClientCommunication.ErrorMessageForClient(VALIDATION_ERROR, socket);
CloseClientConnection();
return;
}
我有一个不切实际的想法,就是在消息中查找“ type”或“ end-
tag”一词,并在其后获取值,但是我知道这不是一个好习惯!我发现这很令人沮丧,因为我看到了无效但无法抓住的标签!
这是我想要的元素的一些示例
1. Message: Element type "first" must be followed by either attribute specifications, ">" or "/>".
2. javax.xml.stream.XMLStreamException: org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 353; cvc-pattern-valid: Value '079e989989' is not facet-valid with respect to pattern '([0-9])+' for type 'phoneNumber'.
3. Message: The element type "firstLine" must be terminated by the matching end-tag "</firstLine>".
下面是一种使用来实现用例的方法ErrorHandler
:
MyErrorHandler
我建议您实施一个ErrorHandler
,以维护对的引用,XMLStreamReader
以便在SAXParseException
发生时可以查询XMLStreamReader
来获取有关该元素的信息。如果要在引发异常后停止分析,只需SAXParseException
在每个方法的末尾重新抛出。
package forum11921190;
import javax.xml.stream.XMLStreamReader;
import org.xml.sax.*;
public class MyErrorHandler implements ErrorHandler {
private XMLStreamReader reader;
public MyErrorHandler(XMLStreamReader reader) {
this.reader = reader;
}
@Override
public void error(SAXParseException e) throws SAXException {
warning(e);
}
@Override
public void fatalError(SAXParseException e) throws SAXException {
warning(e);
}
@Override
public void warning(SAXParseException e) throws SAXException {
System.out.println(reader.getLocalName());
System.out.println(reader.getNamespaceURI());
e.printStackTrace(System.out);
}
}
演示版
您可以设置的一个实例ErrorHandler
上Validator
。
package forum11921190;
import javax.xml.XMLConstants;
import javax.xml.stream.*;
import javax.xml.transform.stax.StAXSource;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.*;
public class Demo {
private static final StreamSource XSD = new StreamSource("src/forum11921190/schema.xsd");
private static final StreamSource XML = new StreamSource("src/forum11921190/input.xml");
public static void main(String[] args) throws Exception {
SchemaFactory factory=SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = factory.newSchema(XSD);
XMLStreamReader reader = XMLInputFactory.newFactory().createXMLStreamReader(XML);
Validator validator = schema.newValidator();
validator.setErrorHandler(new MyErrorHandler(reader));
validator.validate(new StAXSource(reader));
}
}
schema.xsd
以下是编写演示代码时使用的示例XML模式。
<?xml version="1.0" encoding="UTF-8"?>
<schema xmlns="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.example.com"
xmlns:tns="http://www.example.com"
elementFormDefault="qualified">
<element name="root">
<complexType>
<sequence>
<element name="foo" type="string"/>
<element name="bar" type="int"/>
</sequence>
</complexType>
</element>
</schema>
input.xml
以下是一些示例输入。该bar
元素具有无效的内容。
<?xml version="1.0" encoding="UTF-8"?>
<root xmlns="http://www.example.com">
<foo>valid</foo>
<bar>invalid</bar>
</root>
输出量
以下是运行演示代码的输出:
bar
http://www.example.com
org.xml.sax.SAXParseException: cvc-datatype-valid.1.2.1: 'invalid' is not a valid value for 'integer'.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(XMLSchemaValidator.java:423)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(XMLSchemaValidator.java:3188)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.elementLocallyValidType(XMLSchemaValidator.java:3103)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processElementContent(XMLSchemaValidator.java:3013)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleEndElement(XMLSchemaValidator.java:2156)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.endElement(XMLSchemaValidator.java:824)
at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorHandlerImpl.endElement(ValidatorHandlerImpl.java:565)
at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.endElement(ToXMLSAXHandler.java:261)
at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.handleEndElement(StAXStream2SAX.java:295)
at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.bridge(StAXStream2SAX.java:167)
at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.parse(StAXStream2SAX.java:120)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:674)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:723)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:336)
at com.sun.org.apache.xerces.internal.jaxp.validation.StAXValidatorHelper.validate(StAXValidatorHelper.java:94)
at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorImpl.validate(ValidatorImpl.java:118)
at javax.xml.validation.Validator.validate(Validator.java:127)
at forum11921190.Demo.main(Demo.java:26)
bar
http://www.example.com
org.xml.sax.SAXParseException: cvc-type.3.1.3: The value 'invalid' of element 'bar' is not valid.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:384)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:318)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator$XSIErrorReporter.reportError(XMLSchemaValidator.java:423)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.reportSchemaError(XMLSchemaValidator.java:3188)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.elementLocallyValidType(XMLSchemaValidator.java:3104)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.processElementContent(XMLSchemaValidator.java:3013)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleEndElement(XMLSchemaValidator.java:2156)
at com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.endElement(XMLSchemaValidator.java:824)
at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorHandlerImpl.endElement(ValidatorHandlerImpl.java:565)
at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.endElement(ToXMLSAXHandler.java:261)
at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.handleEndElement(StAXStream2SAX.java:295)
at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.bridge(StAXStream2SAX.java:167)
at com.sun.org.apache.xalan.internal.xsltc.trax.StAXStream2SAX.parse(StAXStream2SAX.java:120)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:674)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:723)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:336)
at com.sun.org.apache.xerces.internal.jaxp.validation.StAXValidatorHelper.validate(StAXValidatorHelper.java:94)
at com.sun.org.apache.xerces.internal.jaxp.validation.ValidatorImpl.validate(ValidatorImpl.java:118)
at javax.xml.validation.Validator.validate(Validator.java:127)
at forum11921190.Demo.main(Demo.java:26)
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