java - 从 DOM 获取 XML 字符串

Question

如何将 DOM 解析器生成的 XML 存储在 Java 中的字符串变量中？我可以将其存储在.xml中文件使用:

// creating and writing to xml file  
TransformerFactory transformerFactory = TransformerFactory.newInstance();  
Transformer transformer = transformerFactory.newTransformer();  
DOMSource domSource = new DOMSource(document);  
StreamResult streamResult = new StreamResult(new File("d:/xml_created.xml"));
transformer.transform(domSource, streamResult);

但我需要将其存储在字符串变量中。

Answer 1

您可以创建一个 StringWriter 并将 XML 打印到其中:

http://docs.oracle.com/javase/7/docs/api/java/io/StringWriter.html

StringWriter sw = new StringWriter();

transformer.transform(domSource, sw);

String xml = sw.toString();

您可能需要将 StringWriter 包装在 OutputStream 中，我一时记不清了。