Java解析xml字符串（dom4j、jdom）

1.dom4j解析xml字符串

 需要jar包dom4j-1.6.1.jar

package com.example.xmlresovler;

import java.util.HashMap;

import java.util.Map;

import org.dom4j.Document;

import org.dom4j.DocumentHelper;

import org.dom4j.Element;

import org.dom4j.io.SAXReader;

public class Demo4jXmlResovlerDao {

/**

* demo4j解析xml

*/

public static Map xmlResovlerDao(String xml) {

Map map=new HashMap();

SAXReader saxReader=new SAXReader();

Document doc=null;

try {

//字符串转xml

doc=DocumentHelper.parseText(xml);

//获取根节点

Element rootElt = doc.getRootElement(); // 获取根节点

//打印根节点名字

System.out.println("根节点名字："+rootElt.getName());

//获取根节点下的所有子节点

//<?xml version="1.0" encoding="UTF-8"?>

//<root>

//<returnCode>922609</returnCode>

//<message>会员创建成功</message>

//</root>

String returnCode=rootElt.elementTextTrim("returnCode");

String message=rootElt.elementTextTrim("message");

map.put("returnCode", returnCode);

map.put("message", message);

} catch (Exception e) {

// TODO Auto-generated catch block

e.printStackTrace();

} // 将字符串转为XML

return map;

}

}

2.JDOM解析xml字符串

 需要导入jar包jdom-1.1.3.jar

package com.example.xmlresovler;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.io.InputStream;

import java.io.StringReader;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.jdom.Document;

import org.jdom.Element;

import org.jdom.JDOMException;

import org.jdom.input.SAXBuilder;

import org.xml.sax.InputSource;

/**

 * JDOM解析

 * @author admin

 *

 */

public class JDOMXmlResovlerDao {

public static Map xmlResovlerDao(String xml) throws Exception {

Map map=new HashMap();

SAXBuilder saxBuilder = new SAXBuilder();

//创建一个输入流,加载xml文件

//InputStream in = new FileInputStream("src/mm.xml");

//解析xml字符串

StringReader read = new StringReader(xml);

// 创建新的输入源SAX 解析器将使用 InputSource 对象来确定如何读取 XML 输入

InputSource in = new InputSource(read);

Document document = saxBuilder.build(in);

//获取根节点

Element rootElement = document.getRootElement();

List<Element> elements = rootElement.getChildren();

//获取属性值

for (Element element : elements) {

map.put(element.getName(), element.getValue());

}

return map;

}

}