TextMassage導入后public static String textMessageToXml(TextMessage textMessage)一直報錯TextMessage cannot be resolved to a type ?是什么原因

package?panda.util;

import?java.io.IOException;
import?java.io.InputStream;
import?java.util.HashMap;
import?java.util.List;
import?java.util.Map;

import?javax.servlet.http.HttpServletRequest;

import?org.dom4j.Document;
import?org.dom4j.DocumentException;
import?org.dom4j.Element;
import?org.dom4j.io.SAXReader;



import?panda.po.TextMessage;

import?com.thoughtworks.xstream.XStream;

//進行消息的格式轉換
public?class?MessageUtil?{
	/**
	?*?xml轉為map集合
	?*?@param?request
	?*?@return
	?*?@throws?DocumentException
	?*?@throws?IOException
	?*/
	
public?static?Map<String,?String>?xmlToMap(HttpServletRequest?request)?throws?DocumentException,?IOException{
	Map<String,?String>?map?=?new?HashMap<String,?String>();
	SAXReader?reader?=?new?SAXReader();
	
	InputStream?ins?=?request.getInputStream();//從request中獲取輸入流
	Document?doc?=?reader.read(ins);
	
	Element?root?=?doc.getRootElement();
	
	List<Element>?list?=?root.elements();
	
	for(Element?e:list){
		map.put(e.getName(),?e.getText());
	}
	ins.close();
	return?map;
	
}

/**
?*?將文本消息對象轉換為xml
?*?@param?textMessage
?*?@return
?*/

//講將對象類型轉為xml類型
public?static?String?textMessageToXml(TextMessage?textMessage){
	XStream?xstream?=?new?XStream();
	return?xstream.toXML(textMessage);
}
}