1、url显示参数信息（不安全） @Controller @RequestMapping("/UserOperate") public class UserController { @RequestMapping("/login") public String login(RedirectAttributs redirectAttributes) { redirectAttributes.addAttributie("name", "123"); redirectAttributes.addAttributie("success", "success"); //等价于 "redirect://main?name=123&success=success" return "redirect:/UserOperate/main"; } @RequestMapping("/main") public String login(HttpServletRequest request) { String name=request.getParameter("name"); String success=request.getParameter("success"); System.out.println(name);//输出"name" System.out.println(success);//输出"success" return "main";//返回main.jsp } } 此种方法url直接显示“main?name=123&success=success”，在重定向之后的页面或者控制器main()方法里再去获取url后面的参数就可以了 2、url不显示参数信息(安全) @Controller @RequestMapping("/UserOperate") public class UserController { @RequestMapping("/login") public String login(RedirectAttributs redirectAttributes) { redirectAttributes.addFlashAttributie("name", "123"); redirectAttributes.addFlashAttributie("success", "success"); return "redirect:/UserOperate/main";//重定向后到mainly()函数 } @RequestMapping("/main") public String mainly(@ModelAttribute("name") String name, @ModelAttribute("success") String success ) { System.out.println(name);//输出"name" System.out.println(success);//输出"success" return "main";//返回main.jsp } } 此种方法url不显示参数，重定向后在main()中只能通过@ModelAttribute获取参数值 