(java ee)实现注册后，怎么返回登录页面？

Question

在页面上填好注册信息，点击注册后，调用了后台Controller类的这个方法，注册成功了，我的返回值要怎么写才能让它返回到登录页面？

 @RequestMapping(value = "/regist.action", method = RequestMethod.POST)
    @ResponseBody
    public String userRegist(User user){
        int rows = userService.registUser(user);
        if(rows > 0){
            return "OK";
        }else {
            return "FAIL";
        }
    }

Answer 1

springmvc 登陆后跳转到登陆前的界面

 * 获取登录的jsp页面  
 * @return 登录的jsp页面  
 */  
@RequestMapping(method= {RequestMethod.GET},value="loginUI")  
public String loginUI(HttpServletRequest request) {  
    //在session中保存进入登录之前的页面  
    HttpSession session = request.getSession();  
    //保存登录前的页面  
    session.setAttribute("privatePage", request.getHeader("Referer"));  
    return "login";  
}  

/** 
 * 登录功能 
 * @return  
 */  
@RequestMapping(method= {RequestMethod.POST},value= "login")  
public String login(ClassUser classUser,HttpServletRequest request) {  
    //登录功能  
    ClassUser loginUser = userService.login(classUser);  
    /*判断是否登录成功，如果成功加入到Session中，不成功这返回到登录页面*/  
    if(loginUser==null) {  
        //登录失败  
        return "redirect:loginUI";  
    }  
    //登录成功  
    HttpSession session = request.getSession();  
    Object userLogin = session.getAttribute("USERLOGIN");  
    session.setAttribute("USERLOGIN", userLogin);  
    //判断用户来源  
    //获取用户登录前以页面  
    Object privatePage = session.getAttribute("privatePage");  
    if(privatePage==null) {  
        //说明直接登录  
        return "redirect:mapUI";  
    }else {  
        return "redirect:"+privatePage.toString();  
    }  
}  

https://blog.csdn.net/qq_35448976/article/details/78825709