• 本文章主要提供了xml和bean互转
• 主要内容包括如下
  • JavaBean装换成xml
  • xml装换成JavaBean
  • XML 转成MAP
• 引入依赖

   <!-- https://mvnrepository.com/artifact/org.dom4j/dom4j -->
        <dependency>
            <groupId>org.dom4j</groupId>
            <artifactId>dom4j</artifactId>
            <version>2.1.1</version>
        </dependency>

java代码如下

package com.zzx.util;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.Element;
import org.dom4j.io.SAXReader;

import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.io.StringWriter;
import java.util.*;

import javax.servlet.http.HttpServletRequest;
import javax.xml.bind.JAXBContext;
import javax.xml.bind.JAXBException;
import javax.xml.bind.Marshaller;
import javax.xml.bind.Unmarshaller;


/**
 * 使用Jaxb2.0实现XML<->Java Object的Mapper.
 * <p>
 * 在创建时需要设定所有需要序列化的Root对象的Class.
 * 特别支持Root对象是Collection的情形.
 *
 * @author zzx
 */
public class BeanAndXml {

    /**
     * JavaBean装换成xml
     * 默认编码UTF-8
     */
    public static String beanTomXml(Object obj) {
        return beanTomXml(obj, "UTF-8");
    }

    /**
     * JavaBean装换成xml
     */
    private static String beanTomXml(Object obj, String encoding) {
        String result = null;
        try {
            JAXBContext context = JAXBContext.newInstance(obj.getClass());
            Marshaller marshaller = context.createMarshaller();
            marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true);
            marshaller.setProperty(Marshaller.JAXB_ENCODING, encoding);
            StringWriter writer = new StringWriter();
            marshaller.marshal(obj, writer);
            result = writer.toString();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }


    /**
     * xml装换成JavaBean
     *
     * @return
     */
    public static <T> T xmlToJavaBean(String xml, Class<T> c) {
        T t = null;
        try {
            JAXBContext context = JAXBContext.newInstance(c);
            Unmarshaller unmarshaller = context.createUnmarshaller();
            t = (T) unmarshaller.unmarshal(new StringReader(xml));
        } catch (Exception e) {
            e.printStackTrace();
        }
        return t;

    }

    /**
     * XML 转成MAP
     * @param request
     * @return
     * @throws IOException
     * @throws DocumentException
     */
    public static Map<String, String> xmlToMap(HttpServletRequest request) throws IOException, DocumentException {
        Map<String, String> map = new HashMap<>();
        SAXReader reader = new SAXReader();
        try (InputStream ins = request.getInputStream()) {
            Document doc = reader.read(ins);
            Element root = doc.getRootElement();
            List<Element> list = root.elements();

            for (Element e : list) {
                map.put(e.getName(), e.getText());
            }
            return map;
        }
    }

}