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,而后经过注解注入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的方法以下：

• 在service层注入HttpSession对象，而后直接获取

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