Thymeleaf th:field 在我使用 th:field 时返回错误

Question

当我像这样使用输入时，我没有问题：

<input type="text" name="title" />

但是如果我把 th：name 放在那个地方，我得到一个错误 500：

<input type="text" th:field="${title}"/> 

Começo a tomar erro 500， conforme abaixo

这是 git 存储库： https://github.com/getJv/springStudy

这是错误：

Whitelabel Error Page
This application has no explicit mapping for /error, so you are seeing this as a fallback.
Thu Feb 07 23:03:56 BRST 2019
There was an unexpected error (type=Internal Server Error, status=500).
An error happened during template parsing (template: "class path resource [templates/books/form.html]")
org.thymeleaf.exceptions.TemplateInputException: An error happened during template parsing (template: "class path resource [templates/books/form.html]")

Answer 1

请参阅此处的百里香叶文档

th：field 用于在与 th：object 与上下文变量配对时自动填充值。

如果要动态呈现标签的名称，则应改用 th：name

---

下面的示例将显示"小熊维尼"作为值

图书控制器.java

Book book = new Book();
book.setTitle("Winnie the Pooh");
ModelAndView mv = new ModelAndView("book/form");
mv.addObject("book", book);

百里香叶：

<form th:object="${book}">
    <input type="text" th:field="*{title}">
</form>