Spring + Thymeleaf can't pass the parameter correctly - spring-boot

Question

I can't pass the parameter correctly. I know the error was in the HTML.
The error was in the code ${vo.news.likeCount}, ${vo.news.link}, and so on.
But I don't know how to use it in the correct way. Thank you.
This is a thymeleaf template:
<div class="posts">
<div th:each="vo : ${vos}">
<div class="post">
<div class="votebar">
<button class="click-like up" aria-pressed="false" title="赞同"><i class="vote-arrow"></i>
<span class="count"><span th:text="${vo.news.likeCount}"></span></span>
</button>
<button class="click-dislike down" aria-pressed="true" title="反对"><i class="vote-arrow"></i>
</button>
</div>
<div class="content" data-url="${vo.news.link}">
<div>
<img class="content-img" src="${vo.news.image}" alt="">
</div>
</div>
</div>
</div>
</div>
This is class ViewObject:
public class ViewObject {
private Map<String, Object> obj = new HashMap<String, Object>();
public void set(String key, Object value) {
obj.put(key, value);
}
public Object get(String key) {
return obj.get(key);
}
}
This is the controller method:
#RequestMapping(path = {"/", "/index"}, method = {RequestMethod.GET, RequestMethod.POST})
public String index(Model model) {
List<News> newsList = newsService.getLatesNews(0, 0, 10);
List<ViewObject> vos = new ArrayList<>();
for (News news : newsList) {
ViewObject vo = new ViewObject();
vo.set("news", news);
vo.set("user", userService.getUser(news.getUserId()));
vos.add(vo);
}
model.addAttribute("vos", vos);
return "home.html";
}

Answer 1

The expression vo.news.likeCount means vo.getNews().getLikeCount(). ViewObject doesn't have method getNews(). You need to structure your expressions to look the same way they would in java.
<span th:text="${vo.get('news').likeCount}"></span>
<img class="content-img" src="${vo.get('news').image}" alt="">
<div class="content" data-url="${vo.get('news').link}">
etc...