做毕设（十四）——新闻标签

这篇博客主要介绍了如何在毕设中将获取的新闻标签显示到页面上。内容包括取出新闻的类型如xx, xxx, xx等，并对这些标签进行处理，然后在label.html和index.html页面上展示。" 451233,3709,HOOPS：二维点到三维空间投影算法,"['HOOPS', '三维图形', '几何计算', '交互设计', '投影算法']

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

上次把新闻的比tag取出来了，现在把他显示到页面上。

<div class="tag" th:text="${News.type}">tag</div>

取出新闻类型xx,xxx,xx,xxx,xx
处理一下

var tagArray = $(".tag").text().split(',');
var tag = "";
tag += "<ul>";
for(var i=0;i<tagArray.length;i++){
    tag += "<a href=\"/label?label="+tagArray[i]+"\"><li>" + tagArray[i] + "</li></a>";
}
tag += "</ul>";
$(".tag").html(tag);

public Page<News> getAllNewsHaveLabel(int page, int size ,String label){
    Pageable pageable = new PageRequest(page, size,new Sort(Sort.Direction.DESC,"id"));
    Specification<News> spec = new Specification<News>() {
    public Predicate toPredicate(Root<News> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
        Predicate p = cb.like(root.get("type"),"%"+ label +"%");//root相当于sql中的from
        query.where(p);//添加条件
        return query.getRestriction();
    }
};
    return newsRepository.findAll(spec,pageable);
}

/**
     * 根据标签找新闻
     * @param map
     * @param label 标签
     * @return
     */
    @RequestMapping(value = "/label",method = RequestMethod.GET)
    public String toLabel(ModelMap map,String label) {
        Page<News> newsPage = newsService.getAllNewsHaveLabel(0,20,label);
        PreviewDeal previewDeal = new PreviewDeal();//预览图文工具
        List<News> newsList = previewDeal.Deal(newsPage.getContent());//设置预览图文
        map.addAttribute("News",newsList);
        int totalPages = newsPage.getTotalPages()-1;
        map.addAttribute("totalPages",totalPages);
        map.addAttribute("label",label);
        return "label";
    }

    /**
     * 加载更多新闻，带标签
     * @param pageNum 新闻页，即下一页
     * @return
     */
    @RequestMapping(value = "/loadmorelabel")
    @ResponseBody
    public List<News> loadmore(@RequestParam(value = "pageNum",required = false) String pageNum,
                               @RequestParam(value = "label",required = false) String label){
        int pageNumber = Integer.parseInt(pageNum);
        Page<News> newsPage = newsService.getAllNewsHaveLabel(pageNumber,20,label);
        PreviewDeal previewDeal = new PreviewDeal();//预览图文工具
        List<News> newsList = previewDeal.Deal(newsPage.getContent());//设置预览图文
        return newsList;
    }