java对象与xml相互转换工具类

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<String> getListXML(String srcXml) {
//存储xml元素信息的容器
List<Leaf> elemList = new ArrayList<Leaf>();
List<String> list = new ArrayList<String>();
Document srcdoc = null;
try {
srcdoc = DocumentHelper.parseText(srcXml);
} catch (DocumentException e) {
e.printStackTrace();
}
Element elem = srcdoc.getRootElement();
getElementList(elem, elemList);
for (Iterator<Leaf> 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<Leaf> 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;
}
}
}