[英]XML is not validated with the XSD using XAS parser
似乎在我下面的xml中驗證不成功。
addressbook.xml
<?xml version ="1.0" encoding="UTF-8"?>
<addressbook>
<address>
<name>
<first-name>Samitha</first-name>
<last-name>Chathuranga</last-name>
<sasa>dd</sasa>
</name>
<street>107 B</street>
<village>Poramba</village>
<city>AG</city>
<postal-code>80300</postal-code>
<country>Sri Lanka</country>
</address>
<address>
<name>
<first-name>Hasara</first-name>
<last-name>Semini</last-name>
</name>
<street>32 A</street>
<village>Dombanwila</village>
<city>RG</city>
<postal-code>34300</postal-code>
<country>Sri Lanka</country>
</address>
</addressbook>
我添加了額外的元素dd來檢查它是否已通過以下XSD的驗證,但似乎沒有。 沒有錯誤消息來。 因此驗證似乎不成功。
addressbook.xsd
<?xml version="1.0" encoding="UTF-8" ?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<xsd:element name="addressbook">
<xsd:complexType>
<xsd:sequence>
<xsd:element ref="address" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="address" >
<xsd:complexType>
<xsd:sequence>
<xsd:element ref="name" />
<xsd:element ref="street" />
<xsd:element ref="village" />
<xsd:element ref="city" />
<xsd:element ref="postal-code" />
<xsd:element ref="country" />
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="name">
<xsd:complexType>
<xsd:sequence>
<xsd:element ref="first-name"/>
<xsd:element ref="last-name"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:element name="first-name" type="xsd:string" />
<xsd:element name="last-name" type="xsd:string" />
<xsd:element name="street" type="xsd:string" />
<xsd:element name="village" type="xsd:string" />
<xsd:element name="city">
<xsd:simpleType>
<xsd:restriction base="xsd:string">
<xsd:length value="2" />
</xsd:restriction>
</xsd:simpleType>
</xsd:element>
<xsd:element name="postal-code" type="xsd:string" />
<xsd:element name="country" type="xsd:string" />
</xsd:schema>
是什么原因呢?
以下是用於通過SAX進行驗證和解析的2個Java類。
SAX_XSDValidator.java
//1. Checks for well-formed-ness of the XML with extrnal XML Schema when parsing by SAX Parser.
//2. Validated the XML file with external XML schema Using SAX Parser
// JAXP
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.parsers.SAXParser;
import javax.xml.transform.Source;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.SchemaFactory;
import org.xml.sax.InputSource;
import org.xml.sax.XMLReader;
public class SAX_XSDValidator {
public static void main(String[] args) {
try {
SAXParserFactory factory = SAXParserFactory.newInstance();
SAXParser parser = factory.newSAXParser();
XMLReader reader = parser.getXMLReader();
// checking for well-formed-ness using SAX.=>This doesn't validate
// against XSD
// Turn off validation, and turn on namespaces
factory.setValidating(false);
factory.setNamespaceAware(true);
reader.setErrorHandler(new SimpleErrorHandler());
reader.parse(new InputSource("src/addressbook.xml"));
System.out.println("Checked well-formed-ness using SAX ");
// validating using external schema Using SAX Parser
// SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setValidating(true);
factory.setNamespaceAware(true);
SchemaFactory schemaFactory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");
factory.setSchema(schemaFactory.newSchema(new Source[] { new StreamSource("src/addressbook.xsd") }));
reader.setErrorHandler(new SimpleErrorHandler());
reader.parse(new InputSource("src/addressbook.xml"));
System.out.println("Validation Checked when Parsing with SAX");
System.out.println("Parsing successful");
} catch (ParserConfigurationException e) {
System.out.println("The underlying parser does not support "
+ " the requested features.");
} catch (FactoryConfigurationError e) {
System.out.println("Error occurred obtaining SAX Parser Factory.");
} catch (Exception e) {
System.out.println("Caught Exception");
e.printStackTrace();
}
}
}
SimpleErrorHandler.java
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import org.xml.sax.ErrorHandler;
public class SimpleErrorHandler implements ErrorHandler {
public void warning(SAXParseException e) throws SAXException {
System.out.println(e.getMessage());
}
public void error(SAXParseException e) throws SAXException {
System.out.println(e.getMessage());
}
public void fatalError(SAXParseException e) throws SAXException {
System.out.println(e.getMessage());
}
}
您需要創建一個新的SAXParser
:您正在更改factory
變量,但是您的reader
仍然使用舊的SAXParser
:
// checking for well-formed-ness using SAX.
SAXParserFactory factory = SAXParserFactory.newInstance();
factory.setValidating(true);
factory.setNamespaceAware(true);
SAXParser parser = factory.newSAXParser();
XMLReader reader = parser.getXMLReader();
reader.setErrorHandler(new SimpleErrorHandler());
reader.parse(new InputSource("src/addressbook.xml"));
System.out.println("Checked well-formed-ness using SAX ");
// validating using external schema Using SAX Parser
factory.setValidating(false); // set validation to false
SchemaFactory schemaFactory = SchemaFactory.newInstance("http://www.w3.org/2001/XMLSchema");
factory.setSchema(schemaFactory.newSchema(new Source[] { new StreamSource("src/addressbook.xsd") }));
parser = factory.newSAXParser(); // create a new parser
reader = parser.getXMLReader(); // and refresh your reader
reader.setErrorHandler(new SimpleErrorHandler());
reader.parse(new InputSource("src/addressbook.xml"));
System.out.println("Validation Checked when Parsing with SAX");
System.out.println("Parsing successful");
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