Map 和 XML 相互转换（JAVA）

Question

XML：DE转换成Map.
再帮忙提供一个逆转的方法。多谢大家。
属性别丢啊

自己弄出来 了。csdn界面现在换的都不知道该点哪里。真不习惯。

Answer 1

package cn.jsfund.util;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

import org.apache.commons.collections.map.LinkedMap;
import org.dom4j.Attribute;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

import cn.jsfund.web.Validation;

/**

• XML 工具类
• @author zhaoxb

• @time 2013-07-24
  */
  public class XMLUtil {

  private static final String SEPARATOR = " ";
  /**

  • 把XML字符串转换成MAP 声明：这个类还不完善， 不能自动取得主要报文体中的内容。得自己从map中取出报文体。示例 Map FOAReq =
  • map.get("FOAReq")
  • @param xmlStr

  • @return map
    */
    public static Map xml2Map(String xmlStr) {
    Map map = new LinkedHashMap();
    try {
    Document doc;
    doc = DocumentHelper.parseText(xmlStr);
    Element rootElement = doc.getRootElement();
    xml2Map(rootElement, map);

    return map;
    

    } catch (DocumentException e) {
    e.printStackTrace();
    }

    return null;
    }

  /**

  • 递归方法 获得节点的值，如果某节点下还有子节点，则些key对应的value也是一个map
  • @param element
  • @param map */ private static void xml2Map(Element element, Map map) { Iterator i = element.elementIterator(); String key = element.getName(); Map childMap = new LinkedMap(); Iterator i2 = element.attributeIterator(); if (!i.hasNext()) { String value = element.getTextTrim(); map.put(key, value); } else { // Map childMap = new LinkedHashMap(); while (i.hasNext()) { map.put(key, childMap); Element childElement = (Element) i.next(); xml2Map(childElement, childMap); } } if (i2.hasNext()) { Map attrMap = new LinkedMap(); while (i2.hasNext()) { Attribute attribute = (Attribute) i2.next(); String attrName = attribute.getName(); String attrValue = attribute.getValue(); attrMap.put(attrName, attrValue); } map.put("@" + key, attrMap); } }

  /**

  • map转xml字符串
  • @param map
  • 所要转换的map
  • @param businessName
  • 业务名字.比如 开户是FOARes
  • @return String 拼接的 */ public static String map2Xml(Map map) { StringBuffer sbf = new StringBuffer("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); map2Xml(sbf, map); return sbf.toString(); }

  /**

  • 递归方法将map里的键和值拼接成xml字符串
  • @param sbf
  • @param map */

  private static void map2Xml(StringBuffer sbf, Map map) {
  Set s = map.entrySet();
  Iterator i = s.iterator();
  StringBuffer childSbf = new StringBuffer();
  while(i.hasNext()){
  Entry e = (Entry) i.next();
  String key = (String) e.getKey();
  if(key.indexOf("@") >= 0){
  continue;
  }
  if(key != null){
  childSbf.append("<").append(key);
  }
  String attr = "@" + key;
  Map attrMap = (Map) map.get(attr);
  if(null != attrMap){
  Set attrSet = attrMap.entrySet();
  Iterator attrIterator = attrSet.iterator();
  while(attrIterator.hasNext()){
  Entry attrEntry = (Entry) attrIterator.next();
  String attrKey = (String) attrEntry.getKey();
  String attrValue = (String) attrEntry.getValue();
  childSbf.append(SEPARATOR).append(attrKey).append("=").append("\"").append(attrValue).append("\"");
  }
  }
  childSbf.append(">");
  Object value = e.getValue();
  if(value instanceof List){
  List list = (List) value;
  for(int j = 0; j Map valueMap = (Map) list.get(j);
  map2Xml(childSbf,valueMap);
  }
  }else if(value instanceof Map){
  Map valueMap = (Map) value;
  map2Xml(childSbf, valueMap);
  }else{
  if(null != value){
  childSbf.append(value);
  }else{
  childSbf.append("");
  }
  }
  if(key != null){
  childSbf.append("").append(key).append(">");
  }
  }
  sbf.append(childSbf);
  
  }

  public static void main(String[] args) {
  String xmlStr6 = "";
  Map map6 = xml2Map(xmlStr6);
  System.out.println(map6.toString());

  String result = map2Xml(map6);
  System.out.println(result);
  

  }
  }