springmvc请求转发和重定向问题(携带参数和不携带参数)

@RequestMapping("/forwardCommon")
public  forwardCommon(HttpServletRequest request,HttpServletResponse response){
  request.getServletDispatcher("/WEBINF/pages/success.jsp").forward(request,response);
}

@RequestMapping("/forwardView")
public String forwardView(){
    return "forward:/WEB_INF/pages/success.jsp";
}

@RequestMapping("/forwardView")
public String forwardView(){
    ModelAndView mv=new ModelAndView();
    mv.setViewName("forward:/WEB_INF/pages/success.jsp");
}

@RequestMapping("/shopmanagement")
private String shopManagement(Model model) {
    return "shop/shopmanagement";
}

@RequestMapping("/shopmanagement")
private ModelAndView shopManagement(Model model) {
    ModelAndView mv=new ModelAndView();
    mv.setViewName("shop/shopmanagement");//也是请求转发，会经过视图解析器
    return mv;
}

$(function(){
    var shopId=getQueryString("shopId");//获取url中的参数
    var url=window.location.href;//获得请求url
})
function getQueryString(name){
    var reg=new RegExp("(^|&)"+name+"=([^&]*)(&|$)");
    var r=window.location.search.substr(1).match(reg);
    if(r!=null){
        return decodeURIComponent(r[2]);
    }
    return null;
}

@RequestMapping(value="/testredirect",method = { RequestMethod.POST, RequestMethod.GET })  
public void testredirect(HttpServletResponse response){  
    response.sendRedirect("/index");
}

@RequestMapping(value="/testredirect",method = { RequestMethod.POST, RequestMethod.GET })  
public String testredirect(){  
    return "redirect:/index";
}

@RequestMapping(value="/testredirect",method = { RequestMethod.POST, RequestMethod.GET })  
public ModelAndView testredirect(){  
    ModelAndView mv=new ModelAndView();
    mv.setViewName("redirect:/index");
    return mv;
}

redirectAttributes.addAttributie("prama",value); 

@RequestMapping("/test")
private String shopList(RedirectAttributes ra) {
    ra.addAttribute("param", 1);
    return "redirect:/shopadmin/shoplist";
}

//相当于请求 http://localhost:8080/o2o/shopadmin/shoplist?param=1

redirectAttributes.addFlashAttributie("prama",value); 

@RequestMapping("/test")
private String shopList(RedirectAttributes ra) {
    ra.addFlashAttribute("param", 1);
    return "redirect:/shopadmin/shoplist";
}

@RequestMapping("/shoplist")
private String shopList(@ModelAttribute("param") String param) {
    System.out.println(param);//输出1
    return "shop/shoplist";
}