springmvc 整合jquery uploadify 火狐浏览器不兼容问题解决

<%
　　　　String sessionId = request.getSession().getId();
%> 

//上传处理程序url
 ‘uploader‘ : ‘${path}/bpmAttachController/fileUpload.do;jsessionid=<%=sessionId%>

import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpSession;

/**
 * 为解决uploadify在FireFox下上传文件时session丢失而设.
 * @author fangjian.
 *
 */
public class MySessionContext {
    private static MySessionContext instance;
    private Map<String, HttpSession> mymap;

    private MySessionContext() {
        mymap = new HashMap<String, HttpSession>();
    }

    public static MySessionContext getInstance() {
        if (instance == null) {
            instance = new MySessionContext();
        }
        return instance;
    }

    public synchronized void AddSession(HttpSession session) {
        if (session != null) {
            mymap.put(session.getId(), session);
        }
    }

    public synchronized void DelSession(HttpSession session) {
        if (session != null) {
            mymap.remove(session.getId());
        }
    }

    public synchronized HttpSession getSession(String session_id) {
        if (session_id == null)
            return null;
        return (HttpSession) mymap.get(session_id);
    }

}

//进入页面之前先把session保存到map中

MySessionContext.getInstance().AddSession(request.getSession());

HttpSession session = null;
String sessionid= (String) request.getParameter("jsessionid");

 if (sessionid != null && !"".equals(sessionid)) {
      session = MySessionContext.getInstance().getSession(sessionid);
 }

　　<%
　　　　String sessionId = request.getSession().getId();
　　%>

 //上传处理程序url
‘uploader‘:‘${path}/bpmAttachController/fileUpload.do;jsessionid=<%=sessionId%>?taskId=${taskId}&defId=${defId}&jsessionid=<%=sessionId%>‘,