xml转json，基于json-lib-2.4-jdk15.jar； xml转map，基于jdom2-2.0.6.jar
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.jdom2.Attribute;
import org.jdom2.Document;
import org.jdom2.Element;
import org.jdom2.JDOMException;
import org.jdom2.input.SAXBuilder;
import org.jdom2.output.Format;
import org.jdom2.output.XMLOutputter;
import net.sf.json.JSON;
import net.sf.json.JSONSerializer;
import net.sf.json.xml.XMLSerializer;
public class XmlUtil {
/**
* 属性标识
*/
public static final String attributeMark = "@";
/**
* 将xml字符串<STRONG>转换</STRONG>为JSON字符串
*
* @param xmlString
* xml字符串
* @return JSON<STRONG>对象</STRONG>
*/
public static String xml2json(String xmlString) {
XMLSerializer xmlSerializer = new XMLSerializer();
JSON json = xmlSerializer.read(xmlString);
return json.toString();
}
/**
* 将xmlDocument<STRONG>转换</STRONG>为JSON<STRONG>对象</STRONG>
*
* @param xmlDocument
* XML Document
* @return JSON<STRONG>对象</STRONG>
*/
public static String xml2json(Document xmlDocument) {
return xml2json(xmlDocument.toString());
}
/**
* JSON(数组)字符串<STRONG>转换</STRONG>成XML字符串。<br/>
* json字符串，属性字段转xml时，需要添加@标识。<br/>
*
* <pre>
* 如：
* "Application": {
* "@decisionNum": "01",* "@applicationID": "adfsdf",* "MessageList": {
* "StatusCode": "1",* "StatusDescription": "Successful"
* }
* }
* </pre>
*
* @param jsonString
* @return xml 数据
*/
public static String json2xml(String jsonString) {
XMLSerializer xmlSerializer = new XMLSerializer();
return xmlSerializer.write(JSONSerializer.toJSON(jsonString));
// return
// xmlSerializer.write(JSONArray.fromObject(jsonString));//这种方式只支持JSON数组
}
/**
* 取得xml文件的根节点名称，即消息名称。
*
* @param xmlStr
* xml内容
* @return String 返回名称
*/
public static String getRootName(String xmlStr) throws Exception {
SAXBuilder builder = new SAXBuilder();
Document doc = builder.build(new StringReader(xmlStr));
Element root = doc.getRootElement();
return root.getName();
}
private static void getAttributeValue(Element e,Map<String,Object> map) {
if (e.getAttributes().size() > 0) {
Iterator<Attribute> it_attr = e.getAttributes().iterator();
while (it_attr.hasNext()) {
Attribute attribute = (Attribute) it_attr.next();
String attrname = attribute.getName();
String attrvalue = e.getAttributeValue(attrname);
map.put(attrname,attrvalue);
}
}
}
/**
* 把xml文件转换为map形式，其中key为有值的节点名称
*
* @param xmlStr
* xml内容
* @return Map 转换为map返回
*/
public static Map<String,Object> xml2Map(String xmlStr) throws JDOMException,IOException {
SAXBuilder builder = new SAXBuilder();
Document doc = builder.build(new StringReader(xmlStr));
Map<String,Object> rtnMap = new HashMap<String,Object>();
if (doc == null) {
return rtnMap;
}
// 得到根节点
Element rootElement = doc.getRootElement();
Map<String,Object> bodyMap = new HashMap<String,Object>();
rtnMap.put(rootElement.getName(),bodyMap);
element2map(rootElement,bodyMap);
return rtnMap;
}
/**
* 递归函数，找出最下层的节点并加入到map中，由xml2Map方法调用。
*
* @param element
* xml节点，包括根节点
* @param map
* 目标map
*/
public static void element2map(Element element,Object> map) {
if (null == element) {
return;
}
getAttributeValue(element,map);
String name = element.getName();
List<Element> children = element.getChildren();
if (!"".equals(element.getTextTrim())) {
map.put(name,element.getText());
} else if (children != null && children.size() > 0) {
for (Element elmtSub : children) {
Map<String,Object> mapSub = new HashMap<String,Object>();
String childName = elmtSub.getName();
element2map(elmtSub,mapSub);
Object first = map.get(childName);
if (null == first) {
map.put(childName,mapSub);
} else {
if (first instanceof List<?>) {
((List) first).add(mapSub);
} else {
List<Object> listSub = new ArrayList<Object>();
listSub.add(first);
listSub.add(mapSub);
map.put(childName,listSub);
}
}
}
}
}
/**
* 格式化xml
*
* @param xmlStr
* @param encoding
*
* @return String
* @throws Exception
*/
public static String formatXml(String xmlStr) throws Exception {
return formatXml(xmlStr,"utf-8");
}
/**
* 格式化xml
*
* @param xmlStr
* @param encoding
*
* @return String
* @throws Exception
*/
public static String formatXml(String xmlStr,String encoding) throws Exception {
SAXBuilder sb = new SAXBuilder();
Reader reader = new StringReader(xmlStr);
Document doc = null;
try {
doc = sb.build(reader);
} catch (Exception e) {
throw e;
}
Format prettyFormat = Format.getPrettyFormat();
prettyFormat.setEncoding(encoding);
XMLOutputter outputter = new XMLOutputter(prettyFormat);
String result = "";
if (null != doc) {
result = outputter.outputString(doc);
}
return result;
}
/**
*
* map2Xml <br/>
* map对象，字段生成为xml属性时，key需要添加@标识。<br/>
* 列如map实例对象字符串：{Application={@applicationID=adfsdf,AppliInfo={@age=23,name=yame}}}
* <br/>
*
* @param map
* @return
* @throws Exception
*/
public static String map2Xml(Map map) throws Exception {
StringBuffer sb = new StringBuffer();
sb.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
mapToXmlHandle(map,sb);
try {
return sb.toString();
} catch (Exception e) {
throw e;
}
}
private static void mapToXmlHandle(Map map,StringBuffer sb) {
Set set = map.keySet();
for (Iterator it = set.iterator(); it.hasNext();) {
String key = (String) it.next();
Object value = map.get(key);
if (null == value)
value = "";
if (value instanceof List) {
List list = (List) value;
for (int i = 0; i < list.size(); i++) {
sb.append("<");
sb.append(key);
sb.append(">");
Map hm = (Map) list.get(i);
mapToXmlHandle(hm,sb);
sb.append("</");
sb.append(key);
sb.append(">");
}
} else {
if (value instanceof Map) {
sb.append("<");
sb.append(key);
sb.append(">");
mapToXmlHandle((HashMap) value,sb);
sb.append("</");
sb.append(key);
sb.append(">");
} else {
if (key.startsWith(attributeMark)) {
String tempAtt = " " + key.replaceAll(attributeMark,"") + "=\"" + value + "\"";
sb.insert(sb.length() - 1,tempAtt);
} else {
sb.append("<" + key + ">" + value + "</" + key + ">");
}
}
}
}
}
} 原文链接：https://www.f2er.com/xml/294446.html