Java Transformer输出&lt; 和&gt; 而不是<>

Question

我正在使用Transformer通过添加更多节点来编辑Java中的XML文件.旧的XML代码没有改变,但是新的XML节点具有<而>不是<>并且在同一行上.而不是如何获得<> <和>以及如何获得新的节点后换行.我已经阅读了几个类似的线程,但无法获得正确的格式.以下是代码的相关部分:

// Read the XML file

DocumentBuilderFactory dbf= DocumentBuilderFactory.newInstance();   
DocumentBuilder db = dbf.newDocumentBuilder();   
Document doc=db.parse(xmlFile.getAbsoluteFile());
Element root = doc.getDocumentElement();


// create a new node
Element newNode = doc.createElement("Item");

// add it to the root node
root.appendChild(newNode);

// create a new attribute
Attr attribute = doc.createAttribute("Name");

// assign the attribute a value
attribute.setValue("Test...");

// add the attribute to the new node
newNode.setAttributeNode(attribute);



// transform the XML
Transformer transformer = TransformerFactory.newInstance().newTransformer();   
transformer.setOutputProperty(OutputKeys.INDENT, "yes"); 
transformer.setOutputProperty(OutputKeys.METHOD, "xml");
StreamResult result = new StreamResult(new FileWriter(xmlFile.getAbsoluteFile()));   
DOMSource source = new DOMSource(doc);   
transformer.transform(source, result);

谢谢

Answer 1

要替换>和其他标记,您可以使用org.apache.commons.lang3:

StringEscapeUtils.unescapeXml(resp.toString());

之后,您可以使用变换器的以下属性在xml中包含换行符:

transformer.setOutputProperty(OutputKeys.INDENT, "yes");

Answer 2

根据此处发布的问题：

public void writeToOutputStream(Document fDoc, OutputStream out) throws Exception {
    fDoc.setXmlStandalone(true);
    DOMSource docSource = new DOMSource(fDoc);
    Transformer transformer = TransformerFactory.newInstance().newTransformer();
    transformer.setOutputProperty(OutputKeys.METHOD, "xml");
    transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");
    transformer.setOutputProperty(OutputKeys.INDENT, "no");
    transformer.transform(docSource, new StreamResult(out));
}

产生：

<?xml version="1.0" encoding="UTF-8"?>

我看到的差异：

fDoc.setXmlStandalone(true);
transformer.setOutputProperty(OutputKeys.ENCODING, "UTF-8");