domexample.java

java 的关于web serive教程

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.FactoryConfigurationError;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.soap.MessageFactory;
import javax.xml.soap.SOAPMessage;
import javax.xml.soap.SOAPHeader;
import javax.xml.soap.SOAPBody;
import javax.xml.soap.SOAPBodyElement;
import javax.xml.soap.Node;
import javax.xml.soap.SOAPElement;
import javax.xml.soap.Text;
import javax.xml.soap.Name;
import javax.xml.namespace.QName;
import org.xml.sax.SAXException;
import org.xml.sax.SAXParseException;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import org.w3c.dom.Document;
import org.w3c.dom.DOMException;
import org.w3c.dom.NodeList;

public class DOMExample {
    static Document document;

    public static void main(String[] args) {
        if (args.length != 1) {
            System.err.println("Argument required: " + "-Dxml-file=<filename>");
            System.exit(1);
        }

        DOMExample de = new DOMExample();

        document = null;

        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        factory.setNamespaceAware(true);

        try {
            DocumentBuilder builder = factory.newDocumentBuilder();
            document = builder.parse(new File(args[0]));
        } catch (SAXParseException spe) {
            // Error generated by the parser
            System.out.println("\n** Parsing error" + ", line " +
                spe.getLineNumber() + ", uri " + spe.getSystemId());
            System.out.println("   " + spe.getMessage());

            // Use the contained exception, if any
            Exception x = spe;

            if (spe.getException() != null) {
                x = spe.getException();
            }

            x.printStackTrace();
        } catch (SAXException sxe) {
            // Error generated during parsing)
            Exception x = sxe;

            if (sxe.getException() != null) {
                x = sxe.getException();
            }

            x.printStackTrace();
        } catch (ParserConfigurationException pce) {
            // Parser with specified options can't be built
            pce.printStackTrace();
        } catch (IOException ioe) {
            // I/O error
            ioe.printStackTrace();
        }

        try {
            // Create SOAP 1.1 message factory
            MessageFactory messageFactory = MessageFactory.newInstance();

            // Create a message
            SOAPMessage message = messageFactory.createMessage();

            // Get the SOAP header from the message and remove it
            SOAPHeader header = message.getSOAPHeader();
            header.detachNode();

            // Get the SOAP body from the message
            SOAPBody body = message.getSOAPBody();

            // Add the DOM document to the message body
            SOAPBodyElement docElement = body.addDocument(document);

            message.saveChanges();

            // Get contents using SAAJ APIs
            Iterator iter1 = body.getChildElements();
            de.getContents(iter1, "");
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    }

    /*
     * Retrieves the contents of the elements recursively and
     * displays them.
     *
     * @param iterator      Iterator returned by getChildElements
     * @param indent        indentation to nest element display
     */
    public void getContents(Iterator iterator, String indent) {
        while (iterator.hasNext()) {
            Node node = (Node) iterator.next();
            SOAPElement element = null;
            Text text = null;

            if (node instanceof SOAPElement) {
                element = (SOAPElement) node;

                QName name = element.getElementQName();
                System.out.println(indent + "Name is " +
                    name.toString());

                // Iterator attrs = element.getAllAttributesAsQNames();
                Iterator attrs = element.getAllAttributes();

                while (attrs.hasNext()) {
                    //System.out.println("ClassCastException coming, on " +
                    //    "assignment of attribute to QName instead of Name");
                   // QName attrName = (QName) attrs.next();
                    Name attrName = (Name) attrs.next();
                    System.out.println(indent + " Attribute name is " +
                    //    attrName.toString());
                        attrName.getQualifiedName());
                    System.out.println(indent + " Attribute value is " +
                        element.getAttributeValue(attrName));
                }

                Iterator iter2 = element.getChildElements();
                getContents(iter2, indent + " ");
            } else {
                text = (Text) node;

                String content = text.getValue();
                System.out.println(indent + "Content is: " + content);
            }
        }
    }
}