spring几种获取 HttpServletRequest 对象的方式

 

第一种：

    import javax.servlet.http.HttpServletRequest;  
    import javax.servlet.http.HttpSession;  
      
      
    import org.springframework.web.context.request.RequestContextHolder;  
    import org.springframework.web.context.request.ServletRequestAttributes;  
      
      
      
      
    /**  
    * 使用该类必须在 web.xml 中添加监听（org.springframework.web.context.request.RequestContextListener） 
    * 该作用域仅适用于WebApplicationContext环境 
    */  
    public class Global {  
        static String _loginSessionKey="login_session";  
        /** 
         * 获取当前请求session 
         * @return 
         */  
        public static HttpServletRequest getHttpServletRequest(){  
            HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder  
                    .getRequestAttributes())  
                    .getRequest();  
            return request;  
        }     
        /** 
         * 获取当前请求session 
         * @return 
         */  
        public static HttpSession getHttpSession(){  
            return getHttpServletRequest().getSession();  
        }  
    }  

 

 

第二种： @Autowired 方式

 

@Controller  
@RequestMapping("/demo")  
public class LoginController{  
    @Autowired  
    private  HttpServletRequest request2;