我是Java的新手，遇到了问题。我有一个我想阅读的JTree。我使用下面的代码，它适用于Elements。但是我的属性和值的顺序错误，每个属性名和值都显示两次：<Product Software="Software" dfg="dfg"></Product>。它应该如下所示：<Product Software="dfg"></Product>。
我该如何解决？
感谢您的帮助！
我的代码：
public class JTreeToXML {
static Document doc;
public static void writeFile(String file, TreeModel model)
throws TransformerException, ParserConfigurationException, SAXException, IOException {
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
DocumentBuilder builder = factory.newDocumentBuilder();
DOMImplementation impl = builder.getDOMImplementation();
doc = impl.createDocument(null, null, null);
System.out.println("--------------------------");
Element root = createTree(doc, model, model.getRoot(), 0);
doc.appendChild(root);
// Transform the document into a string
DOMSource domSource = new DOMSource(doc);
TransformerFactory tf = TransformerFactory.newInstance();
Transformer transformer = tf.newTransformer();
transformer.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes");
transformer.setOutputProperty(OutputKeys.METHOD, "xml");
transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-16");
transformer.setOutputProperty(OutputKeys.INDENT, "no");
transformer.setOutputProperty(OutputKeys.CDATA_SECTION_ELEMENTS, "expanded names");
StreamResult sr = new StreamResult(new File(file + ".xml"));
System.out.println(file + ".xml");
transformer.transform(domSource, sr);
}
public static String encodeToUnicodeStandard(String pData) {
StringBuffer encodedData = new StringBuffer();
StringBuffer sBuff = new StringBuffer(pData);
for (int i = 0; i < sBuff.length(); i++) {
char ch = sBuff.charAt(i);
int chVal = (int) ch;
// if this is a special character (ie. > 8 bits), encode it
if (chVal > Byte.MAX_VALUE) {
encodedData.append("&#x").append(Integer.toHexString(chVal)).append(";");
} else {
encodedData.append(ch);
}
}
return encodedData.toString();
}
private static Element createTree(Document doc, TreeModel model, Object node, int z) {
Element el = doc.createElement(node.toString());
for (int i = 0; i < model.getChildCount(node); i++) {
Object child = model.getChild(node, i);
// TRY kann eigentlich entfernt werden
if (child.toString().length() != 0) {
// Wenn kein leaf
if (model.getChildCount(child) != 0) {
el.appendChild(createTree(doc, model, child, z + 1));
} else {
//int a = 4;
//a= a+i;
// Wenn ein leaf
if(i < model.getChildCount(node)) {
//el.setAttribute(child.toString(), model.getChild(node, a).toString());
//el.setAttribute(child.toString(), model.getChild(node, i).toString());
//System.out.println(child.toString() + "=" + model.getChild(node, i).toString());
//el.setAttribute(model.getChild(node, i).toString(), child.toString());
el.setAttribute(child.toString(), child.toString());
}
}
System.out.println(z + " + " + child.toString());
}
}
return el;
}
}