浅析清除session的几种方法

第一种方法(继承SessionAware类来取得session,然后用invalidate()方法清理)

session.removeAttribute("sessionname")是清除SESSION里的某个属性.  
  session.invalidate()是让SESSION失效.  
  或许你可以用getAttributeNames来得到所有属性名,然后再removeAttribute  

我是如下在Spring中实現的：

 private void initSession(HttpServletRequest request){
  Enumeration em = request.getSession().getAttributeNames();
  while(em.hasMoreElements()){
   request.getSession().removeAttribute(em.nextElement().toString());
  }
 }

1. public class ExitAction extends ActionSupport implements SessionAware{
   
2. @Override
   
3. public String execute() throws Exception {
   
4. HttpServletRequest request = ServletActionContext.getRequest();
   
5. HttpSession session1 = request.getSession();
   
6. session1.invalidate();
   
7. return super.execute();
   
8. }
   
9. 
   
10. public void setSession(Map arg0) {
    
11. 
    
12. 
    
13. }
    
14. 
    
15. }
    
16. 
    

复制代码

//第二种方法（用ActionContext取session,然后用clear()方法清理电脑维修 ）

1. public class ExitAction extends ActionSupport{
   
2. 
   
3. @Override
   
4. public String execute() throws Exception {
   
5. ActionContext ac = ActionContext.getContext();
   
6. Map session = ac.getSession();
   
7. session.remove("buser");
   
8. session.remove("guser");
   
9. session.remove("fuser");
   
10. return super.execute();
    
11. }
    
12. 
    
13. }