我想将xml字符串转换为xml文件。我得到一个xml字符串作为输出，到目前为止我有以下代码:publicstaticvoidstringToDom(StringxmlSource)throwsSAXException,ParserConfigurationException,IOException{DocumentBuilderFactoryfactory=DocumentBuilderFactory.newInstance();DocumentBuilderbuilder=factory.newDocumentBuilder();Documentdoc=builder.parse(n