HttpServletRequest request = ?(HttpServletRequest)arg0; HttpServletResponse Response = ?(HttpServletResponse)arg1; ? ?HttpSession session = ?request.getSession(); ? ? ? ?if(session.getAttribute("username")!=null) ? ?{ ? ? arg2.doFilter(arg0, arg1); ? ?}else ? ?{ Response.sendRedirect("login.jsp"); }為什么 if里面 是arg0 ?arg2 ?else 里面是Response ? 用arg2不行
filter 的問題
qq_歲月的名字_0
2017-09-18 18:10:22
