Java 如何在NekoHTML中将文档对象的内容写入字符串？

我正在使用NekoHTML解析一些HTML文件的内容

除了将Document对象的内容提取到某个字符串之外，一切都正常

我试过了

TransformerFactory transformerFactory = TransformerFactory.newInstance();
Transformer transformer = transformerFactory.newTransformer();
DOMSource source = new DOMSource(doc);
StreamResult result = new StreamResult(writer);
transformer.transform(source, result);

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但是没有返回任何内容。

Oracle App server 10.3.1.4中的问题可能的解决方案：

//this nekohtml  
DOMParser parser = new DOMParser();  
parser.parse(archivo);  


//this xerces  
OutputFormat format = new OutputFormat(parser.getDocument());   
format.setIndenting(true);  

//print xml for console 
//XMLSerializer serializer = new XMLSerializer(System.out, format); 

//save xml in string var 
OutputStream outputStream = new ByteArrayOutputStream(); 
XMLSerializer serializer = new XMLSerializer(outputStream, format); 

//process
serializer.serialize(parser.getDocument()); 


String xmlText = outputStream.toString();  

System.out.println(xmlText); 

//to generate a file output use fileoutputstream instead of system.out 
//XMLSerializer serializer = new XMLSerializer(new FileOutputStream(new File("book.xml")), format);  

网址：

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请参见e）将DOM序列化为FileOutputStream以生成xml文件“book.xml”

请定义“writer”是什么。FileWriter可用于写入文件，StringWriter可用于写入字符串缓冲区