SpringMVC-redirect

request.getRequestDispatcher(url).forward(request, response)

/**
     *
     * 获取高亮实时流程图
     * */
    @RequestMapping(value = "/getHighlightImg/{eventcode}", method = RequestMethod.GET)
    public void getHighlightImg(@PathVariable String eventcode, HttpServletRequest request, HttpServletResponse response){
        try {
            request.getRequestDispatcher("/event/getHighlightImg/" + eventcode).forward(request, response);
        } catch (ServletException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

response.sendRedirect

不带参数

response.sendRedirect("/index");

response.sendRedirect("http://www.baidu.com");

带参数

//menuname : 系统管理，中文乱码，需要编码
response.sendRedirect(request.getContextPath() + "/initialMain.jspx?menuname=" + URLEncoder.encode(menuname, "UTF-8"));

ViewResolver 直接跳转

不带参数

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

带参数

@RequestMapping("/testredirect")
public String testredirect(Model model, RedirectAttributes attr) {
		attr.addAttribute("p1", "value1"); //使用 RedirectAttributes 的 addAttribute 方法传递参数会跟随在 URL 后面
    attr.addFlashAttribute("p2", "value2"); //使用 addFlashAttribute 不会跟随在 URL 后面，会把该参数值暂时保存于 session，待重定向 url 获取该参数后从 session 中移除，这里的 redirect 必须是方法映射路径，jsp 无效
		return "redirect:/user/users";
}

ModelAndView 重定向

不带参数

@RequestMapping(value="/restredirect",method = { RequestMethod.POST, RequestMethod.GET })  
public  ModelAndView restredirect(String userName){  
    ModelAndView  model = new ModelAndView("redirect:/main/index");    
    return model;  
}

带参数

@RequestMapping(value="/toredirect",method = { RequestMethod.POST, RequestMethod.GET })  
public  ModelAndView toredirect(String userName){  
    ModelAndView  model = new ModelAndView("/main/index");   
    model.addObject("userName", userName);  //把userName参数带入到controller的RedirectAttributes
    return model;  
}