JDK8提供的反射新特性，能让方法参数以方法名显示

假如你没有设置，则显示如下index方法，参数名为arg1,arg2,arg3,arg4。

 private String index(String oper,String keyword,Integer pageNo,HttpServletRequest request)throws IOException, ServletException {

        HttpSession session = request.getSession() ;

        if(pageNo==null){
            pageNo = 1;
        }

        if(StringUtil.isNotEmpty(oper) && "search".equals(oper)){
            pageNo = 1 ;
            if(StringUtil.isEmpty(keyword)){
                keyword = "" ;
            }
            session.setAttribute("keyword",keyword);
        }else{
            Object keywordObj = session.getAttribute("keyword");
            if(keywordObj!=null){
                keyword = (String)keywordObj ;
            }else{
                keyword = "" ;
            }
        }

        // 重新更新当前页的值
        session.setAttribute("pageNo",pageNo);

        List fruitList = fruitDAO.getFruitListByPage(keyword,pageNo);
        session.setAttribute("fruitList",fruitList);

        //总记录条数
        int fruitCount = fruitDAO.getFruitCount(keyword);

        //总页数 =  （总记录条数 + 总记录数 - 1）/总记录数
        int pageCount = (fruitCount+5-1)/5 ;
        session.setAttribute("pageCount",pageCount);


        return "index" ;
    }