java dom4j 解析xml字符串的操做實例

package test;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;

import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.DocumentHelper;
import org.dom4j.Element;

/**   
* @Title: TestDom4j.java
* @Package 
* @Description: 解析xml字符串
* @author 無處不在
* @date 2012-11-20 下午05:14:05
* @version V1.0   
*/
public class ParseDataUtil {

  public void readStringXml(String xml) {
      Document doc = null;
      try {

          // 讀取並解析XML文檔
          // SAXReader就是一個管道，用一個流的方式，把xml文件讀出來
          // 																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																																			
          // SAXReader reader = new SAXReader(); //User.hbm.xml表示你要解析的xml文檔
          // Document document = reader.read(new File("User.hbm.xml"));
          // 下面的是經過解析xml字符串的
          doc = DocumentHelper.parseText(xml); // 將字符串轉爲XML
          																												
          Element rootElt = doc.getRootElement(); // 獲取根節點
          System.out.println("根節點：" + rootElt.getName()); // 拿到根節點的名稱

          Iterator iter = rootElt.elementIterator("head"); // 獲取根節點下的子節點head

          // 遍歷head節點
          while (iter.hasNext()) {

              Element recordEle = (Element) iter.next();
              String title = recordEle.elementTextTrim("title"); // 拿到head節點下的子節點title值
              System.out.println("title:" + title);

              Iterator iters = recordEle.elementIterator("script"); // 獲取子節點head下的子節點script

              // 遍歷Header節點下的Response節點
              while (iters.hasNext()) {

                  Element itemEle = (Element) iters.next();

                  String username = itemEle.elementTextTrim("username"); // 拿到head下的子節點script下的字節點username的值
                  String password = itemEle.elementTextTrim("password");

                  System.out.println("username:" + username);
                  System.out.println("password:" + password);
              }
          }
          Iterator iterss = rootElt.elementIterator("body"); ///獲取根節點下的子節點body
          // 遍歷body節點
          while (iterss.hasNext()) {

              Element recordEless = (Element) iterss.next();
              String result = recordEless.elementTextTrim("result"); // 拿到body節點下的子節點result值
              System.out.println("result:" + result);

              Iterator itersElIterator = recordEless.elementIterator("form"); // 獲取子節點body下的子節點form
              // 遍歷Header節點下的Response節點
              while (itersElIterator.hasNext()) {

                  Element itemEle = (Element) itersElIterator.next();

                  String banlce = itemEle.elementTextTrim("banlce"); // 拿到body下的子節點form下的字節點banlce的值
                  String subID = itemEle.elementTextTrim("subID");

                  System.out.println("banlce:" + banlce);
                  System.out.println("subID:" + subID);
              }
          }
      } catch (DocumentException e) {
          e.printStackTrace();

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

      }
  }

  /**
   * @description 將xml字符串轉換成map
   * @param xml
   * @return Map
   */
  public static Map readStringXmlOut(String xml) {
      Map map = new HashMap();
      Document doc = null;
      try {
          // 將字符串轉爲XML
          doc = DocumentHelper.parseText(xml); 
          // 獲取根節點
          Element rootElt = doc.getRootElement(); 
          // 拿到根節點的名稱
          System.out.println("根節點：" + rootElt.getName()); 

          // 獲取根節點下的子節點head
          Iterator iter = rootElt.elementIterator("head"); 
          // 遍歷head節點
          while (iter.hasNext()) {

              Element recordEle = (Element) iter.next();
              // 拿到head節點下的子節點title值
              String title = recordEle.elementTextTrim("title"); 
              System.out.println("title:" + title);
              map.put("title", title);
              // 獲取子節點head下的子節點script
              Iterator iters = recordEle.elementIterator("script"); 
              // 遍歷Header節點下的Response節點
              while (iters.hasNext()) {
                  Element itemEle = (Element) iters.next();
                  // 拿到head下的子節點script下的字節點username的值
                  String username = itemEle.elementTextTrim("username"); 
                  String password = itemEle.elementTextTrim("password");

                  System.out.println("username:" + username);
                  System.out.println("password:" + password);
                  map.put("username", username);
                  map.put("password", password);
              }
          }

          //獲取根節點下的子節點body
          Iterator iterss = rootElt.elementIterator("body"); 
          // 遍歷body節點
          while (iterss.hasNext()) {
              Element recordEless = (Element) iterss.next();
              // 拿到body節點下的子節點result值
              String result = recordEless.elementTextTrim("result"); 
              System.out.println("result:" + result);
              // 獲取子節點body下的子節點form
              Iterator itersElIterator = recordEless.elementIterator("form"); 
              // 遍歷Header節點下的Response節點
              while (itersElIterator.hasNext()) {
                  Element itemEle = (Element) itersElIterator.next();
                  // 拿到body下的子節點form下的字節點banlce的值
                  String banlce = itemEle.elementTextTrim("banlce"); 
                  String subID = itemEle.elementTextTrim("subID");

                  System.out.println("banlce:" + banlce);
                  System.out.println("subID:" + subID);
                  map.put("result", result);
                  map.put("banlce", banlce);
                  map.put("subID", subID);
              }
          }
      } catch (DocumentException e) {
          e.printStackTrace();
      } catch (Exception e) {
          e.printStackTrace();
      }
      return map;
  }

  public static void main(String[] args) {

      // 下面是須要解析的xml字符串例子
      String xmlString = 
  "<html>" + 
	  "<head>" + 
		  "<title>dom4j解析一個例子</title>"+ 
		  "<script>" + 
			  "<username>yangrong</username>"+ 
			  "<password>123456</password>" + 
		  "</script>" + 
	  "</head>"+ 
	  "<body>" + 
		  "<result>0</result>" + 
		  "<form>" + 
			  "<banlce>1000</banlce>" + 
			  "<subID>36242519880716</subID>"+ 
		  "</form>" + 
	  "</body>" + 
  "</html>";

      /*
       * Test2 test = new Test2(); test.readStringXml(xmlString);
       */
      Map map = readStringXmlOut(xmlString);
      Iterator iters = map.keySet().iterator();
      while (iters.hasNext()) {
          String key = iters.next().toString(); // 拿到鍵
          String val = map.get(key).toString(); // 拿到值
          System.out.println(key + "=" + val);
      }
  }

}