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xml工具类-dom4j方式，
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import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.lang.StringEscapeUtils;
import org.dom4j.Document;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.SAXReader;
import org.dom4j.io.XMLWriter;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
public class XmlConverUtil {
/**
* Map转XML
*
* @param map
* @return
*/
public static String maptoXml(Map map) {
Document document = DocumentHelper.createDocument();
Element nodeElement = document.addElement("xml");
for (Object obj : map.keySet()) {
Element keyElement = nodeElement.addElement(obj.toString());
keyElement.setText("<![CDATA[" + String.valueOf(map.get(obj)) + "]]>");
}
return StringEscapeUtils.unescapeXml(document.getRootElement().asXML());
}
/**
* List转XML
*
* @param list
* @return
*/
public static String listtoXml(List list) throws Exception {
Document document = DocumentHelper.createDocument();
Element nodesElement = document.addElement("nodes");
int i = 0;
for (Object o : list) {
Element nodeElement = nodesElement.addElement("node");
if (o instanceof Map) {
for (Object obj : ((Map) o).keySet()) {
Element keyElement = nodeElement.addElement("key");
keyElement.addAttribute("label",String.valueOf(obj));
keyElement.setText(String.valueOf(((Map) o).get(obj)));
}
} else {
Element keyElement = nodeElement.addElement("key");
keyElement.addAttribute("label",String.valueOf(i));
keyElement.setText(String.valueOf(o));
}
i++;
}
return doc2String(document);
}
/**
* XML转Map
*
* @param xml
* @return
*/
public static Map xmltoMap(String xml) {
try {
Map map = new HashMap();
Document document = DocumentHelper.parseText(xml);
Element nodeElement = document.getRootElement();
List node = nodeElement.elements();
for (Iterator it = node.iterator(); it.hasNext();) {
Element elm = (Element) it.next();
map.put(elm.attributeValue(elm.getName()),elm.getText());
elm = null;
}
node = null;
nodeElement = null;
document = null;
return map;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* XML转List
*
* @param xml
* @return
*/
public static List xmltoList(String xml) {
try {
List<Map> list = new ArrayList<Map>();
Document document = DocumentHelper.parseText(xml);
Element nodesElement = document.getRootElement();
List nodes = nodesElement.elements();
for (Iterator its = nodes.iterator(); its.hasNext();) {
Element nodeElement = (Element) its.next();
Map map = xmltoMap(nodeElement.asXML());
list.add(map);
map = null;
}
nodes = null;
nodesElement = null;
document = null;
return list;
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
/**
* @param document
* @return
*/
public static String doc2String(Document document) {
String s = "";
try {
// 使用输出流来进行转化
ByteArrayOutputStream out = new ByteArrayOutputStream();
// 使用UTF-8编码
OutputFormat format = new OutputFormat(" ",true,"UTF-8");
XMLWriter writer = new XMLWriter(out,format);
writer.write(document);
s = out.toString("UTF-8");
} catch (Exception ex) {
ex.printStackTrace();
}
return StringEscapeUtils.unescapeXml(s);
}
public static Map<String,String> parseXml(HttpServletRequest request) throws Exception {
// 解析结果存储在HashMap
Map<String,String> map = new HashMap<String,String>();
InputStream inputStream = request.getInputStream();
// 读取输入流
SAXReader reader = new SAXReader();
Document document = reader.read(inputStream);
// 得到xml根元素
Element root = document.getRootElement();
// 得到根元素的所有子节点
List<Element> elementList = root.elements();
// 遍历所有子节点
for (Element e : elementList)
map.put(e.getName(),e.getText());
// 释放资源
inputStream.close();
inputStream = null;
return map;
}
/**
* 解析xml,返回第一级元素键值对。如果第一级元素有子节点，则此节点的值是子节点的xml数据。
*
* @param strxml
* @return
* @throws JDOMException
* @throws IOException
*/
public static Map doXMLParse(String strxml) throws Exception {
if (null == strxml || "".equals(strxml)) {
return null;
}
Map m = new HashMap();
InputStream in = String2Inputstream(strxml);
SAXBuilder builder = new SAXBuilder();
org.jdom.Document doc = builder.build(in);
org.jdom.Element root = doc.getRootElement();
List list = root.getChildren();
Iterator it = list.iterator();
while (it.hasNext()) {
org.jdom.Element e = (org.jdom.Element) it.next();
String k = e.getName();
String v = "";
List children = e.getChildren();
if (children.isEmpty()) {
v = e.getTextNormalize();
} else {
v = getChildrenText(children);
}
m.put(k,v);
}
// 关闭流
in.close();
return m;
}
/**
* 获取子结点的xml
*
* @param children
* @return String
*/
public static String getChildrenText(List children) {
StringBuffer sb = new StringBuffer();
if (!children.isEmpty()) {
Iterator it = children.iterator();
while (it.hasNext()) {
org.jdom.Element e = (org.jdom.Element) it.next();
String name = e.getName();
String value = e.getTextNormalize();
List list = e.getChildren();
sb.append("<" + name + ">");
if (!list.isEmpty()) {
sb.append(getChildrenText(list));
}
sb.append(value);
sb.append("</" + name + ">");
}
}
return sb.toString();
}
public static InputStream String2Inputstream(String str) {
return new ByteArrayInputStream(str.getBytes());
}
}
