我正在使用Spring Boot。我正在尝试使用百里香模板。我用过龙目岛。运行表示存在意外错误的项目时出现白色标签错误（类型=内部服务器错误，状态= 500）。模板解析期间发生错误（模板：“类路径资源[templates / design.html]”）org.thymeleaf.exceptions.TemplateInputException：模板解析期间发生错误（模板：“类路径资源[templates / design.html]”）
这是我的项目结构enter image description here
<!DOCTYPE html>
<html
xmlns:th="http://www.thymeleaf.org">
<head>
<title>Taco Cloud</title>
</head>
<body>
<h1>Design your taco!</h1>
<form method="POST" th:object="${design}">
<div class="grid">
<div class="ingredient-group" id="wraps">
<h3>Designate your wrap:</h3>
<div th:each="ingredient : ${wrap}">
<input th:field="*{ingredients}" type="checkbox"
th:value="${ingredient.id}"/>
<span th:text="${ingredient.name}">INGREDIENT</span><br/>
</div>
</div>
<div class="ingredient-group" id="proteins">
<h3>Pick your protein:</h3>
<div th:each="ingredient : ${protein}">
<input th:field="*{ingredients}" type="checkbox"
th:value="${ingredient.id}"/>
<span th:text="${ingredient.name}">INGREDIENT</span><br/>
</div>
</div>
<div class="ingredient-group" id="cheeses">
<h3>Choose your cheese:</h3>
<div th:each="ingredient : ${cheese}">
<input th:field="*{ingredients}" type="checkbox"
th:value="${ingredient.id}"/>
<span th:text="${ingredient.name}">INGREDIENT</span><br/>
</div>
</div>
<div class="ingredient-group" id="veggies">
<h3>Determine your veggies:</h3>
<div th:each="ingredient : ${veggies}">
<input th:field="*{ingredients}" type="checkbox"
th:value="${ingredient.id}"/>
<span th:text="${ingredient.name}">INGREDIENT</span><br/>
</div>
</div>
<div class="ingredient-group" id="sauces">
<h3>Select your sauce:</h3>
<div th:each="ingredient : ${sauce}">
<input th:field="*{ingredients}" type="checkbox"
th:value="${ingredient.id}"/>
<span th:text="${ingredient.name}">INGREDIENT</span><br/>
</div>
</div>
</div>
<div>
<h3>Name your taco creation:</h3>
<input type="text" th:field="*{name}"/>
<br/>
<button>Submit Your Taco</button>
</div>
</form>
</body>
</html>并且我收到以下错误：
我正在尝试学习Spring Boot。非常感谢您的帮助
您需要编写表单操作代码：
<form method="POST" th:object="${design}" th:action="@{taco/save}">
WhiteLabel错误页面是通用的Spring Boot错误页面，当不存在自定义错误页面时显示。因此，您需要为状态500错误设置页面：http://zetcode.com/springboot/whitelabelerror/