因此，我正在构建一个简单的炸玉米饼订单应用程序，当我在 /design 提交表单时，出现了“模板解析”错误。
[[Error on endpoint orders/current](https://i.stack.imgur.com/ujN8P.jpg)](https://i.stack.imgur.com/KIaiC.jpg)
这是 orderForm.html 的 thymeleaf 代码：
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://www.thymeleaf.org">
<head>
<title>Taco Cloud</title>
<link rel="stylesheet" th:href="@{/styles.css}" />
</head>
<body>
<form method="POST" th:action="@{/orders}" th:object="${tacoOrder}">
<h1>Order your taco creations!</h1>
<img th:src="@{/images/TacoCloud.jpeg}"/>
<h3>Your tacos in this order:</h3>
<a th:href="@{/design}" id="another">Design another taco</a><br/>
<ul>
<li th:each="taco : ${tacoOrder.tacos}">
<span th:text="${taco.name}">taco name</span></li>
</ul>
<h3>Deliver my taco masterpieces to...</h3>
<label for="deliveryName">Name: </label>
<input type="text" th:field="*{deliveryName}"/>
<span class="validationError"
th:if="${#fields.hasErrors('deliveryName')}"
th:errors="*{deliveryName}">Delivery Name Error</span>
<br/>
<label for="deliveryStreet">Street address: </label>
<input type="text" th:field="*{deliveryStreet}"/>
<span class="validationError"
th:if="${#fields.hasErrors('deliveryStreet')}"
th:errors="*{deliveryStreet}">Delivery Street Error</span>
<br/>
<label for="deliveryCity">City: </label>
<input type="text" th:field="*{deliveryCity}"/>
<span class="validationError"
th:if="${#fields.hasErrors('deliveryCity')}"
th:errors="*{deliveryCity}">Delivery City Error</span>
<br/>
<label for="deliveryState">State: </label>
<input type="text" th:field="*{deliveryState}"/>
<span class="validationError"
th:if="${#fields.hasErrors('deliveryState')}"
th:errors="*{deliveryState}">Delivery State Error</span>
<br/>
<label for="deliveryZip">Zip code: </label>
<input type="text" th:field="*{deliveryZip}"/>
<span class="validationError"
th:if="${#fields.hasErrors('deliveryZip')}"
th:errors="*{deliveryZip}">Delivery Zip Error</span>
<br/>
<h3>Here's how I'll pay...</h3>
<label for="ccNumber">Credit Card #: </label>
<input type="text" th:field="*{ccNumber}"/>
<span class="validationError"
th:if="${#fields.hasErrors('ccNumber')}"
th:errors="*{ccNumber}">CC Num Error</span>
<br/>
<label for="ccExpiration">Expiration: </label>
<input type="text" th:field="*{ccExpiration}"/>
<span class="validationError"
th:if="${#fields.hasErrors('ccExpiration')}"
th:errors="*{ccExpiration}">CC Expiration Error</span>
<br/>
<label for="ccCVV">CVV: </label>
<input type="text" th:field="*{ccCVV}"/>
<span class="validationError"
th:if="${#fields.hasErrors('ccCVV')}"
th:errors="*{ccCVV}">CC CVV Error</span>
<br/>
<input type="submit" value="Submit Order"/>
</form>
</body>
</html>
OrderController.java代码
import org.springframework.stereotype.Controller;
import org.springframework.validation.Errors;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.SessionAttributes;
import org.springframework.web.bind.support.SessionStatus;
import jakarta.validation.Valid;
import lombok.extern.slf4j.Slf4j;
import tacos.TacoOrder;
@Slf4j
@Controller
@RequestMapping("/orders")
@SessionAttributes("tacoOrder")
public class OrderController {
@GetMapping("/current")
public String orderForm() {
return "orderForm";
}
@PostMapping
public String processOrder(@Valid TacoOrder order, Errors errors, SessionStatus sessionStatus) {
if (errors.hasErrors()) {
return "orderForm";
}
log.info("Order submitted: {}", order);
sessionStatus.setComplete();
return "redirect:/";
}
}
我的 TacoOrder 课程：
public class TacoOrder {
@NotBlank(message="Delivery name is required")
private String deliveryName;
@NotBlank(message="Street is required")
private String deliveryStreet;
@NotBlank(message="City is required")
private String deliveryCity;
@NotBlank(message="State is required")
private String deliveryState;
@NotBlank(message="Zipcode is required")
private String deliveryZip;
@CreditCardNumber(message="Not a valid credit card number")
private String ccNumber;
@Pattern(regexp="^(0[1-9]|1[0-2])([\\/])([2-9][0-9])$", message="Must be formatted MM/YY")
private String ccExpiration;
@Digits(integer=3, fraction=0, message="Invalid CVV")
private String ccCVV;
private List<Taco> tacos = new ArrayList<>();
public void addTaco(Taco taco) {
this.tacos.add(taco);
}
}
我的炸玉米饼课：
public class Taco {
@NotNull
@Size(min=5, message="Name must be at least 5 characters long")
private String name;
@NotNull
@Size(min=1, message="You must choose at least 1 ingredient")
private List<Ingredient> ingredients;
}
我检查了 orderForm.html、tacoorder.java，检查了所有控制器类，但似乎无法找到为什么会出现此错误。 发生什么事了？
ThymeLeaf 使用 getter 和 setter 来访问字段。目前“tacos”是 TacoOrder 的私有字段，因此 ThymeLeaf 不可见。
将 getter 和 setter 添加到字段 - 然后它应该可以工作。