JavaDOM在一行中解析XML

因此，我试图从arraylist中获取XML。我的程序按预期工作，只是生成的XML都在一行中，一个元素接一个元素，而不是通常的XML格式。这是我的密码：

public static void obtenirClientsXml(ArrayList<Client> llistaClients){
    try {

        DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
        DocumentBuilder db = dbf.newDocumentBuilder();
        Document doc = db.newDocument();


        Element eRoot = doc.createElement("llista_clients");
        doc.appendChild(eRoot);

        // recorremos el array list
        Iterator<Client> i = llistaClients.iterator();
        while (i.hasNext()){
            Client c = i.next();

            Element eClient = doc.createElement("client");
            eRoot.appendChild(eClient);

            Element eNom = doc.createElement("nom");
            eNom.appendChild(doc.createTextNode(c.getNom()));
            eClient.appendChild(eNom);

            Element eCognom = doc.createElement("cognom");
            eCognom.appendChild(doc.createTextNode(c.getCognoms()));
            eClient.appendChild(eCognom);                
        }

        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        DOMSource source = new DOMSource(doc);
        StreamResult result = new StreamResult("C:/RentalClot/Clients/clients.xml");
        transformer.transform(source, result);

    } catch (Exception e){
        e.printStackTrace();
    }
}

---

有什么想法吗？

尝试向变压器添加属性：

transformer.setOutputProperty(OutputKeys.INDENT, "yes");
transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");

---

我认为属性的方法是明确的：第一个是缩进，第二个是选择空格的数量，找到刚刚更改的解决方案：

现在，它可以像suposed一样工作

        TransformerFactory transformerFactory = TransformerFactory.newInstance();
        Transformer transformer = transformerFactory.newTransformer();
        transformer.setOutputProperty(OutputKeys.INDENT, "yes");
        transformer.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", "2");
        DOMSource source = new DOMSource(doc);
        StreamResult result = new StreamResult("C:/RentalClot/Clients/clients.xml");
        transformer.transform(source, result);