Spring MVC 根据会话请求/IP 地址增加计数器

Question

我正在启动一个允许用户通过其内容获利的应用程序。我根据页面上的查看次数来确定赚到的金额，因此该页面需要一种经过验证的方式来计算查看次数。据我所知，让一个用户只能增加一次查看计数器（就像 YouTube 视频一样）的最佳方法是使用 Session Requests 或 IP Adresses.

这是我的控制器：

@RequestMapping("/viewPhoto/{id}")
    public String viewPhoto(@PathVariable int id, Model model) {
        Photo photo = photoService.getPhotoById(id);
        //irrelevant code
        Long commentNumber = commentService.getCommentNumber(id); //number of comments
        List<Comment> commentList = commentService.getComments(); //getting comments
        List<Reply> replyList = commentService.getRepliesByComment(); //getting replies for each comment
        model.addAttribute("replyList", replyList);
        model.addAttribute("commentList", commentList);
        model.addAttribute("photo", photo);
        model.addAttribute("commentNumber", commentNumber);
        //if the viewer is valid and hasn't viewed the photo, increment view count
        return "viewPhoto";
    }

如果我使用@SessionAttribute 检索会话对象，我如何使用它来验证视图是否唯一？

对不起，如果这是一个菜鸟问题。

提前谢谢你！

Answer 1

我相信你可以使用HttpServletRequest.getRemoteAddress()提取访问者的IP地址

下面是示例代码，没测试过，应该没问题。

@RequestMapping("/viewPhoto/{id}")
public String viewPhoto(@PathVariable int id, Model model, HttpServletRequest request) {
    Photo photo = photoService.getPhotoById(id);
    //irrelevant code
    Long commentNumber = commentService.getCommentNumber(id); //number of comments
    List<Comment> commentList = commentService.getComments(); //getting comments
    List<Reply> replyList = commentService.getRepliesByComment(); //getting replies for each comment
    model.addAttribute("replyList", replyList);
    model.addAttribute("commentList", commentList);
    model.addAttribute("photo", photo);
    model.addAttribute("commentNumber", commentNumber);
    //if the viewer is valid and hasn't viewed the photo, increment view count

    String remoteIP = request.getRemoteAddr();
    //enter logic here to check if user with this IP has already viewed or not
    return "viewPhoto";
}