get_soap_body.java

package coba;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.StringWriter;
import java.net.URL;

public class Main {
    public static void main(String[] args) {
        URL src = ClassLoader.getSystemClassLoader().getResource("./search.xml");

        File initialFile = new File(src.getPath());
        try {
            InputStream in = new FileInputStream(initialFile);
            Node body = getSoapBody(in);
            Element req = getFirstElement(body);
            System.out.println(nodeToString(req));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static Node getSoapBody(InputStream in) throws Exception {
        DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
        Document doc = builder.parse(in);
        return getSoapBody(doc);
    }

    public static Node getSoapBody(Document doc) throws Exception {
        Node root = doc.getFirstChild();
        if (root == null) {
            throw new Exception("XML Root is missing");
        }
        return getSoapBody(root);
    }

    public static Node getSoapBody(Node root) throws Exception {
        NodeList childNodes = root.getChildNodes();
        for (int i = 0; i < childNodes.getLength(); i++) {
            Node child = childNodes.item(i);
            if (child.getNodeName().endsWith(":Body")) {
                return child;
            }
        }
        return null;
    }

    public static String nodeToString(Node node) throws Exception {
        StringWriter sw = new StringWriter();
        Transformer t = TransformerFactory.newInstance().newTransformer();
        t.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
        t.setOutputProperty(OutputKeys.INDENT, "yes");
        t.transform(new DOMSource(node), new StreamResult(sw));
        return sw.toString().trim();
    }

    public static Element getFirstElement(Node parent){
        NodeList childNodes = parent.getChildNodes();
        for (int i = 0; i < childNodes.getLength(); i++) {
            Node child = childNodes.item(i);
            if(child.getNodeType() == Node.ELEMENT_NODE){
                return (Element) child;
            }
        }
        return null;
    }
}