I have an XML document that looks like this:
<?xml version="1.0" encoding="UTF-8"?>
<xs:msgdata xmlns:xs="http://www.myCompany.com"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.myCompany.com msgdata.xsd">
<xs:msgid>MsgID001</xs:msgid>
<xs:msgHash>hlkJKLHljkhkjlHKJLHkjl6y987HJKH</xs:msgHash>
</xs:msgdata>
A schema document (called msgdata.xsd) was also sent to me. I am using JAXB to unmarshall the above xml document to a Java object. The unmarshalling code is shown below:
final JAXBContext context = JAXBContext.newInstance(clazz);
SchemaFactory sf = SchemaFactory.newInstance(XMLConstants.W3C_XML_SCHEMA_NS_URI);
Schema schema = sf.newSchema(new File("C:\\temp\\msgdata.xsd"));
final Unmarshaller unmarshaller = context.createUnmarshaller();
unmarshaller.setSchema(schema);
return (T) unmarshaller.unmarshal(new StringReader(xml));
The target object for the XML is shown below (The object is then converted to a hibernated entity.
@XmlRootElement(name = "msgdata")
public class Message {
private String msgid;
private String msgHash;
@XmlElement(name = "msgid")
public String getMsgid() {
return msgid;
}
public void setMsgid(String msgid) {
this.msgid = msgid;
}
@XmlElement(name = "msgHash")
public String getMsgHash() {
return msgHash;
}
public void setMsgHash(String msgHash) {
this.msgHash = msgHash;
}
A couple of questions:
- I have a rest service where i will receive an XML document in the format shown above. What is the reference for the schema document. I know that the schema document is used for validating the XML document. I think the way it will work is that i use that schema to validate the XML documents that i receive via the REST service. Now the problem is how do i access the schema? Do i just store it somewhere on my file system and access it as shown above?
The XML document has a reference to the schema (See the schemaLocation entry). How will it find the schema document on my file system? Is that schema reference required in the XML document?
The XML document as it is now cannot be unmarshalled. When i try to unmarshal it i get the following error:
Caused by: javax.xml.bind.UnmarshalException: unexpected element (uri:"http://www.myCompany.com", local:"msgdata"). Expected elements are <{}msgdata> at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.handleEvent(UnmarshallingContext.java:662) [jaxb-impl-2.2.4.jar:] at com.sun.xml.bind.v2.runtime.unmarshaller.Loader.reportError(Loader.java:258) [jaxb-impl-2.2.4.jar:] at com.sun.xml.bind.v2.runtime.unmarshaller.Loader.reportError(Loader.java:253) [jaxb-impl-2.2.4.jar:] at com.sun.xml.bind.v2.runtime.unmarshaller.Loader.reportUnexpectedChildElement(Loader.java:120) [jaxb-impl-2.2.4.jar:] at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext$DefaultRootLoader.childElement(UnmarshallingContext.java:1063) [jaxb-impl-2.2.4.jar:] at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext._startElement(UnmarshallingContext.java:498) [jaxb-impl-2.2.4.jar:] at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallingContext.startElement(UnmarshallingContext.java:480) [jaxb-impl-2.2.4.jar:] at com.sun.xml.bind.v2.runtime.unmarshaller.ValidatingUnmarshaller.startElement(ValidatingUnmarshaller.java:102) [jaxb-impl-2.2.4.jar:] at com.sun.xml.bind.v2.runtime.unmarshaller.SAXConnector.startElement(SAXConnector.java:150) [jaxb-impl-2.2.4.jar:] at org.apache.xerces.parsers.AbstractSAXParser.startElement(Unknown Source) [xercesImpl-2.9.1.jar:] at org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanStartElement(Unknown Source) [xercesImpl-2.9.1.jar:] at org.apache.xerces.impl.XMLNSDocumentScannerImpl$NSContentDispatcher.scanRootElementHook(Unknown Source) [xercesImpl-2.9.1.jar:] at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown Source) [xercesImpl-2.9.1.jar:] at org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source) [xercesImpl-2.9.1.jar:] at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) [xercesImpl-2.9.1.jar:] at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) [xercesImpl-2.9.1.jar:] at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) [xercesImpl-2.9.1.jar:] at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) [xercesImpl-2.9.1.jar:] at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source) [xercesImpl-2.9.1.jar:] at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal0(UnmarshallerImpl.java:217) [jaxb-impl-2.2.4.jar:] at com.sun.xml.bind.v2.runtime.unmarshaller.UnmarshallerImpl.unmarshal(UnmarshallerImpl.java:189) [jaxb-impl-2.2.4.jar:] at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:136) [jboss-jaxb-api_2.2_spec-1.0.3.Final.jar:1.0.3.Final] at javax.xml.bind.helpers.AbstractUnmarshallerImpl.unmarshal(AbstractUnmarshallerImpl.java:193) [jboss-jaxb-api_2.2_spec-1.0.3.Final.jar:1.0.3.Final] ... 31 more
I thought the namespace is defined in the xml document. I am either not using the schema correctly or the namespace definition is not correct. What am i doing wrong?
Thanks.
