java 在 xml 中附加节点时出现错误的文档错误
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Wrong document error while appending a node in xml
提问by kannanrbk
public static Node createNodeFromXMLString(String xml) throws SAXException,
IOException {
return builder.parse(new ByteArrayInputStream(xml.getBytes()))
.getDocumentElement();
}
public static void main(String args[]){
Document document = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse("server.xml");
XPath xpath = XPathFactory.newInstance().newXPath();
Node element = (Node)xpath.evaluate("/Server/Service/Connector[2]",document,XPathConstants.NODE);
String newNode = nodeToString(element).replace("port=\"8443\"", "port=\"8453\"");
Node parent = element.getParentNode();
Node node = createNodeFromXMLString(newNode);
parent.removeChild(element);
document.importNode(node,true);
parent.appendChild(node);
}
It throws Exception in thread "main" org.w3c.dom.DOMException: WRONG_DOCUMENT_ERR: A node is used in a different document than the one that created it. at org.apache.xerces.dom.ParentNode.internalInsertBefore(Unknown Source) at org.apache.xerces.dom.ParentNode.insertBefore(Unknown Source) at org.apache.xerces.dom.NodeImpl.appendChild(Unknown Source)
它在线程“main”org.w3c.dom.DOMException 中抛出异常：WRONG_DOCUMENT_ERR：节点在与创建它的文档不同的文档中使用。在 org.apache.xerces.dom.ParentNode.internalInsertBefore(Unknown Source) 在 org.apache.xerces.dom.ParentNode.insertBefore(Unknown Source) 在 org.apache.xerces.dom.NodeImpl.appendChild(Unknown Source)
回答by Jon Skeet
Document.importNodedoesn't change the node it's called on. You should change this line:
Document.importNode不会改变它被调用的节点。你应该改变这一行：
document.importNode(node,true);
to
到
node = document.importNode(node,true);
Alternatively, use a different variable:
或者，使用不同的变量：
Node importedNode = document.importNode(node, true);
parent.appendChild(importedNode);
