Spring在service层获取session和request

获取request有两种方法：

• 1.在web.xml文件中添加监听器,然后通过注解注入request：

  <listener>    
      <listener-class>    
          org.springframework.web.context.request.RequestContextListener
      </listener-class>    
  </listener>

  @Autowired  
  private HttpServletRequest request; 

• 2.直接在service层普通类中获取

  HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();

  获取session的方法如下：

• 在service层注入HttpSession对象，然后直接获取

  @Autowired
  private HttpSession session;
  
  public void getsession (){
      String name = (String) session.getAttribute("name");
  }