Map map = ActionContext.getContext().getSession();
temp = (String) map.get("userName");

------解决方案--------------------
确定两个Action都继成了ActionSupport
在确定下两个Action的先后顺序

建议在项目中自己先写个class ABaseAction extends ActionSupport
实现常用的方法如：


   public Map getStruts2Session()
   {
       return ActionContext.getContext().getSession();
   }

   public Map getStrus2Application()
   {
       return ActionContext.getContext().getApplication();
   }


   public HttpServletRequest getRequest()
   {
       return ServletActionContext.getRequest();
   }

   public HttpServletResponse getResponse()
   {
   	HttpServletResponse response = ServletActionContext.getResponse();
   	response.setCharacterEncoding("UTF-8");
       return response;
   }

   public HttpSession getHttpSession()
   {
       return getRequest().getSession();
       // or return ServletActionContext.getRequest().getSession();
       // or return (HttpSession)ServletActionContext.getContext().get(ServletActionContext.SESSION);
   等等。。。。。


然后你的Action都继成ABaseAction

------解决方案--------------------
Java code

    public Object get(String name) {        
       return ActionContext.getContext().getSession().get(name);
        
    }
    
    @SuppressWarnings("unchecked")
    public void set(String name, Object value) {
       ActionContext.getContext().getSession().put(name, value);
    }
    
    protected void remove(Object key) {
       ActionContext.getContext().getSession().remove(key);
    }

        //获取对象信息方法
        public Object getSessionInfo() {
        Map session = (Map) ActionContext.getContext().getSession();
        return (Object) session.get("Object");
    }

------解决方案--------------------
这样吧， 我给你个例子
java:
Java code

package com.lil.test_ch05_02.action;

import java.util.Map;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;

public class RedirectTest extends ActionSupport {
    private String username;
    
    public String getUsername() {
        return username;
    }
    
    public void setUsername(String username) {
        this.username=username;
    }
    
    public String execute() throws Exception {
        Map user=(Map)ActionContext.getContext().getSession();
        user.put("tmp", "zhangsan");
        
        return SUCCESS;
    }
}