经典的dom4j解析xml字符串实例1
package com.bjsxt.dom4j;
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;
public class Test2 {
/**
* @param 解析xml字符串
*1。先加入dom4j.jar包
*分析：根节点是：html ，子节点是head 、body ,
*/
public void readStringXml(String xml) {
Document doc = null;
try {
//1.读取并解析XML文档
//SAXReader就是一个管道，用一个流的方式，把xml文件读出来
/* SAXReader reader = new SAXReader();
//User.hbm.xml表示你要解析的xml文档
Document document = reader.read(new File("User.hbm.xml"));
*/
//下面的是通过解析xml字符串的
doc = DocumentHelper.parseText(xml); //将字符串转为XML
Element rootElt = doc.getRootElement(); //获取根节点
System.out.println("根节点："+rootElt.getName()); //拿到根节点的名称
Iterator iter = rootElt.elementIterator("head"); //获取根节点下的子节点head
//遍历head节点
while(iter.hasNext()) {
Element recordEle = (Element)iter.next();
String title = recordEle.elementTextTrim("title"); //拿到head节点下的子节点title值
System.out.println("title:"+title);
Iterator iters = recordEle.elementIterator("script"); //获取子节点head下的子节点script
//遍历Header节点下的Response节点
while(iters.hasNext()) {
Element itemEle = (Element)iters.next();
String username = itemEle.elementTextTrim("username"); //拿到head下的子节点script下的字节点username的值
String password = itemEle.elementTextTrim("password");
System.out.println("username:"+username);
System.out.println("password:"+password);
}
}
Iterator iterss = rootElt.elementIterator("body"); ///获取根节点下的子节点body
//遍历body节点
while(iterss.hasNext()) {
Element recordEless = (Element)iterss.next();
String result = recordEless.elementTextTrim("result"); //拿到body节点下的子节点result值
System.out.println("result:"+result);
Iterator itersElIterator = recordEless.elementIterator("form"); //获取子节点body下的子节点form
//遍历Header节点下的Response节点
while(itersElIterator.hasNext()) {
Element itemEle = (Element)itersElIterator.next();
String banlce = itemEle.elementTextTrim("banlce"); //拿到body下的子节点form下的字节点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();
}
}
public static Map readStringXmlOut(String xml) {
Map map=new HashMap();
Document doc = null;
try {
doc = DocumentHelper.parseText(xml); //将字符串转为XML
Element rootElt = doc.getRootElement(); //获取根节点
System.out.println("根节点："+rootElt.getName()); //拿到根节点的名称
Iterator iter = rootElt.elementIterator("head"); //获取根节点下的子节点head
//遍历head节点
while(iter.hasNext()) {
Element recordEle = (Element)iter.next();
String title = recordEle.elementTextTrim("title"); //拿到head节点下的子节点title值
System.out.println("title:"+title);
map.put("title", title);
Iterator iters = recordEle.elementIterator("script"); //获取子节点head下的子节点script
//遍历Header节点下的Response节点
while(iters.hasNext()) {
Element itemEle = (Element)iters.next();
String username = itemEle.elementTextTrim("username"); //拿到head下的子节点script下的字节点username的值
String password = itemEle.elementTextTrim("password");
System.out.println("username:"+username);
System.out.println("password:"+password);
map.put("username", username);
map.put("password", password);
}
}
Iterator iterss = rootElt.elementIterator("body"); ///获取根节点下的子节点body
//遍历body节点
while(iterss.hasNext()) {
Element recordEless = (Element)iterss.next();
String result = recordEless.elementTextTrim("result"); //拿到body节点下的子节点result值
System.out.println("result:"+result);
Iterator itersElIterator = recordEless.elementIterator("form"); //获取子节点body下的子节点form
//遍历Header节点下的Response节点
while(itersElIterator.hasNext()) {
Element itemEle = (Element)itersElIterator.next();
String banlce = itemEle.elementTextTrim("banlce"); //拿到body下的子节点form下的字节点banlce的值
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) {
//下面是需要解析的xml字符串例子
String xmlString = "<html>" +
"<head>" +
"<title>dom4j解析一个例子</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(); //拿到键
String val = map.get(key).toString(); //拿到值
System.out.println(key + "=" + val);
}
}
}