java如何将xml转换成string

在Java中，将XML转换为字符串可以通过多种方式实现。以下是一些常见的方法：

1. 使用DOM解析器

```java

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import org.w3c.dom.Document;

import org.w3c.dom.Node;

import org.w3c.dom.NodeList;

import java.io.StringWriter;

import javax.xml.parsers.ParserConfigurationException;

import org.xml.sax.SAXException;

import org.xml.sax.InputSource;

import java.io.IOException;

public class XmlToString {

public static String convertXmlToString(String xml) throws ParserConfigurationException, SAXException, IOException {

DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();

DocumentBuilder builder = factory.newDocumentBuilder();

Document document = builder.parse(new InputSource(new java.io.StringReader(xml)));

// 创建一个新的字符串写入器

StringWriter writer = new StringWriter();

// 创建一个新的DOMSource

org.w3c.dom.Document doc = document;

org.xml.sax.helpers.XMLWriter xmlWriter = new org.xml.sax.helpers.XMLWriter(writer);

// 将DOMSource转换为字符串

org.apache.xalan.processor.TransformerHandler handler = new org.apache.xalan.processor.TransformerHandler();

handler.setDocument(doc);

handler.setResult(xmlWriter);

handler.startDocument();

handler.endDocument();

return writer.toString();