题目5单选题
在SpringMVC配置文件中,有如下配置: <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" prefix="/" suffix=".jsp"/>,以下代码有可能从controller跳转到welcome.jsp并能够在jsp中显示出username数据的是()A. public String index (String username,Map<String,object>map){ map.put("username",username); return "welcome.jsp"; }B. public String index(String username,Model model){ model.addAttribute (username); return welcome; }C. public String index(Map<String,Object>map,Stringusername){ map.put("username",username); return "welcome"; }D. public String index (String username){ Map<String,Object>map=new Map<String,0bject>(); map.put("username",username); return "welcome"; }