import com.sun.xml.internal.ws.message.RootElementSniffer; //导入依赖的package包/类
/**
 * Obtains the tag name of the root element.
 */
private void sniff() {
    RootElementSniffer sniffer = new RootElementSniffer(false);
    try {
            if (rawContext != null) {
                    Marshaller m = rawContext.createMarshaller();
                    m.setProperty("jaxb.fragment", Boolean.TRUE);
                    m.marshal(jaxbObject,sniffer);
            } else
                    bridge.marshal(jaxbObject,sniffer,null);
    } catch (JAXBException e) {
        // if it's due to us aborting the processing after the first element,
        // we can safely ignore this exception.
        //
        // if it's due to error in the object, the same error will be reported
        // when the readHeader() method is used, so we don't have to report
        // an error right now.
        nsUri = sniffer.getNsUri();
        localName = sniffer.getLocalName();
    }
}
 

import com.sun.xml.internal.ws.message.RootElementSniffer; //导入依赖的package包/类
/**
 * Lazily parse the first element to obtain attribute values on it.
 */
private void parse() {
    RootElementSniffer sniffer = new RootElementSniffer();
    try {
        bridge.marshal(jaxbObject,sniffer,null);
    } catch (JAXBException e) {
        // if it's due to us aborting the processing after the first element,
        // we can safely ignore this exception.
        //
        // if it's due to error in the object, the same error will be reported
        // when the readHeader() method is used, so we don't have to report
        // an error right now.
        nsUri = sniffer.getNsUri();
        localName = sniffer.getLocalName();
        atts = sniffer.getAttributes();
    }
}
 

import com.sun.xml.internal.ws.message.RootElementSniffer; //导入依赖的package包/类
/**
 * Obtains the tag name of the root element.
 */
private void sniff() {
    RootElementSniffer sniffer = new RootElementSniffer(false);
    try {
        bridge.marshal(jaxbObject,sniffer);
    } catch (JAXBException e) {
        // if it's due to us aborting the processing after the first element,
        // we can safely ignore this exception.
        //
        // if it's due to error in the object, the same error will be reported
        // when the readHeader() method is used, so we don't have to report
        // an error right now.
        nsUri = sniffer.getNsUri();
        localName = sniffer.getLocalName();
    }
}
 

import com.sun.xml.internal.ws.message.RootElementSniffer; //导入依赖的package包/类
/**
 * Lazily parse the first element to obtain attribute values on it.
 */
private void parse() {
    RootElementSniffer sniffer = new RootElementSniffer();
    try {
        bridge.marshal(jaxbObject,sniffer);
    } catch (JAXBException e) {
        // if it's due to us aborting the processing after the first element,
        // we can safely ignore this exception.
        //
        // if it's due to error in the object, the same error will be reported
        // when the readHeader() method is used, so we don't have to report
        // an error right now.
        nsUri = sniffer.getNsUri();
        localName = sniffer.getLocalName();
        atts = sniffer.getAttributes();
    }
}
 

import com.sun.xml.internal.ws.message.RootElementSniffer; //导入依赖的package包/类
/**
 * This would peek into the Source (DOMSource and SAXSource) for the localName and NamespaceURI
 * of the top-level element.
 * @param src
 * @return QName of the payload
 */
public QName sniff(Source src) {
    return sniff(src, new RootElementSniffer());
}