java对象与xml相互转换工具类-白红宇

java对象与xml相互转换工具类

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发布时间：2019-06-11

本文共 3664 字，大约阅读时间需要 12 分钟。

public class XmlHelper {    /**     * Object转XML     *     * @param object     * @return     * @throws Exception     */    public static String ObjectToXml(Object object) throws Exception {        JAXBContext context = JAXBContext.newInstance(object.getClass());    // 获取上下文对象        Marshaller marshaller = context.createMarshaller(); // 根据上下文获取marshaller对象        marshaller.setProperty(Marshaller.JAXB_ENCODING, "GB2312");  // 设置编码字符集        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); // 格式化XML输出，有分行和缩进        ByteArrayOutputStream baos = new ByteArrayOutputStream();        marshaller.marshal(object, baos);        String xmlObj = new String(baos.toByteArray());         // 生成XML字符串        return xmlObj.trim();    }    /**     * Object转XML     *     * @param object     * @return     * @throws Exception     */    public static String ObjectToXmlUtf8(Object object) throws Exception {        JAXBContext context = JAXBContext.newInstance(object.getClass());    // 获取上下文对象        Marshaller marshaller = context.createMarshaller(); // 根据上下文获取marshaller对象        marshaller.setProperty(Marshaller.JAXB_ENCODING, "UTF-8");  // 设置编码字符集        marshaller.setProperty(Marshaller.JAXB_FORMATTED_OUTPUT, true); // 格式化XML输出，有分行和缩进        ByteArrayOutputStream baos = new ByteArrayOutputStream();        marshaller.marshal(object, baos);        String xmlObj = new String(baos.toByteArray());         // 生成XML字符串        return xmlObj.trim();    }    /**     * XML转Object     *     * @param xmlStr     * @param classz     * @return     */    public static Object XmlToObject(String xmlStr, Class classz) {        try {            JAXBContext context = JAXBContext.newInstance(classz);            Unmarshaller unmarshaller = context.createUnmarshaller();            Object object = unmarshaller.unmarshal(new StringReader(xmlStr));            return object;        } catch (JAXBException ex) {            ex.printStackTrace();            return null;        }    }    /**     * xml格式字符串获取所有子节点存入list,每个List分两个部分：name和value，中间用“:”隔开     *     * @param srcXml     * @return     */    public static List
    
      getListXML(String srcXml) {        //存储xml元素信息的容器        List
     
       elemList = new ArrayList
      
       ();        List
       
         list = new ArrayList
        
         ();        Document srcdoc = null;        try {            srcdoc = DocumentHelper.parseText(srcXml);        } catch (DocumentException e) {            e.printStackTrace();        }        Element elem = srcdoc.getRootElement();        getElementList(elem, elemList);        for (Iterator
         
           it = elemList.iterator(); it.hasNext(); ) { Leaf leaf = it.next(); list.add(leaf.getName() + ":" + leaf.getValue()); } return list; } /** * 递归遍历方法 * * @param element */ public static void getElementList(Element element, List
          
            elemList) { List elements = element.elements(); if (elements.size() == 0) { //没有子元素 //String xpath = element.getPath(); String xpath = element.getName(); String value = element.getTextTrim(); Leaf leaf = new Leaf(xpath, value); elemList.add(leaf); } else { //有子元素 for (Iterator it = elements.iterator(); it.hasNext(); ) { Element elem = (Element) it.next(); //递归遍历 getElementList(elem, elemList); } } } static class Leaf { private String name; private String value; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getValue() { return value; } public void setValue(String value) { this.value = value; } public Leaf(String name, String value) { this.name = name; this.value = value; } }}