关于struts2的SessionAware的传值问题

Question

SurveryAction.java

package com.njfu.surveypark.struts2.action;

import java.util.List;
import java.util.Map;

import javax.annotation.Resource;

import org.apache.struts2.interceptor.SessionAware;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Controller;

import com.njfu.surveypark.model.Survey;
import com.njfu.surveypark.model.User;
import com.njfu.surveypark.service.SurveyService;


/**
 * SurveyAction
 */
@Controller
@Scope("prototype")
public class SurveyAction extends BaseAction<Survey> implements SessionAware{

	private static final long serialVersionUID = 587149269950475258L;

	//注入SurveyService
	@Resource
	private SurveyService surveyService;

	//调查集合
	private List<Survey> mySurveys;
	
	//接受sessionMap
	private Map<String, Object> sessionMap;

	public List<Survey> getMySurveys() {
		return mySurveys;
	}

	public void setMySurveys(List<Survey> mySurveys) {
		this.mySurveys = mySurveys;
	}

	/**
	 * 查询我的调查列表
	 */
	public String mySurveys(){
		User user= (User) sessionMap.get("User");
		System.out.print(user);
		this.mySurveys = surveyService.findMySurveys(user);
		return "mySurveyListPage";
	}
	
	/**
	 * 新建调查列表
	 */
	public String newSurvey(){
		User user= (User) sessionMap.get("User");
		System.out.print(user);
		this.model = surveyService.newSurvey(user);
		return "designSurveyPage";
	}

	@Override
	public void setSession(Map<String, Object> arg0) {
		this.sessionMap = arg0;
		
	}

	
}

System.out.print(user);控制开打印的是null

null
Hibernate: 
    insert 
    into
        surveys
        (title, pretext, nexttext, donetext, exittext, createtime, userid) 
    values
        (?, ?, ?, ?, ?, ?, ?)
Hibernate: 
    insert 
    into
        pages
        (title, description, surveyid) 
    values
        (?, ?, ?)

这是表明没有得到Session吗？

Answer 1

刚发完贴，突然就找到原因了 User user= (User) sessionMap.get("User");括号中的（User）,应该小写的