java xml字符串转map

以下是Java中将XML字符串转换为Map的示例代码：

import java.util.*;
import java.io.*;
import javax.xml.parsers.*;
import org.w3c.dom.*;
import org.xml.sax.*;

public class XmlToMap {
    public static void main(String[] args) throws Exception {
        String xmlString = "<root><name>John</name><age>30</age></root>";
        Map<String, String> map = xmlToMap(xmlString);
        System.out.println(map);
    }

    public static Map<String, String> xmlToMap(String xmlString) throws Exception {
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        InputStream inputStream = new ByteArrayInputStream(xmlString.getBytes());
        Document document = builder.parse(inputStream);
        Element root = document.getDocumentElement();
        Map<String, String> map = new HashMap<>();
        NodeList nodeList = root.getChildNodes();
        for (int i = 0; i < nodeList.getLength(); i++) {
            Node node = nodeList.item(i);            if (node.getNodeType() == Node.ELEMENT_NODE) {
                String key = node.getNodeName();
                String value = node.getTextContent();
                map.put(key, value);
            }
        }
        return map;
    }
}

这个示例代码中，我们使用Java内置的XML解析器将XML字符串解析为Document对象，然后遍历Document对象的子节点，将节点的名称作为Map的键，节点的文本内容作为Map的值，最终返回一个Map对象。