Spring在service層獲取session和request

獲取request有兩種方法：

• 1.在web.xml文件中添加監聽器,而後經過註解注入request：

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

@Autowired  
    private HttpServletRequest request;

• 2.直接在service層普通類中獲取

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

獲取session的方法以下：

• 在service層注入HttpSession對象，而後直接獲取

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