当我使用th：field时，thymeleaf th：field返回错误

Question

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

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

以下是错误：

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文档

当th：field与带有上下文变量的th：object配对时，它用于自动填充值。

如果希望动态呈现标记的名称，则应该使用th：name

Book book = new Book();
book.setTitle("Winnie the Pooh");

ModelAndView mv = new ModelAndView("book/form");
mv.addObject("book", book);

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