当我使用 th:field 时，thymeleaf th:field 返回错误

Question

当我使用这样的输入时，我没有问题：

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

但是如果我把 th:name 放在我得到错误 500 的地方：

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

Começo a tomar erro 500，conforme abaixo

这里是 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Thymeleaf Documentation

th:field 用于在与带有上下文变量的 th:object 配对时自动填充值。

如果你想动态渲染标签的名字，你应该使用 th:name 来代替

---

下面的示例将显示“小熊维尼”作为值

BookController.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>