问Spring - Thymeleaf:异常处理模板
EN

Stack Overflow用户

提问于 2019-05-25 08:19:30

回答 4查看 11.5K关注 0票数 7

我正在读一本书“行动中的春天”第五版，但我相信这是一个错误。

这是本书的GitHub。我到了第三章-jdbc 代码来源

当提交订单时，突然出现错误：

以这种方式在终点站：

2019-05-25 16:58:18.164错误11777 - nio-8080-exec-7 org.thymeleaf.TemplateEngine : THYMELEAF异常处理模板"orderForm"：模板：“类路径资源模板/orderForm.html”)模板解析过程中发生的错误(模板：“类路径资源模板/orderForm.html”)

OrderController：

@Controller
@RequestMapping("/orders")
@SessionAttributes("order")
public class OrderController {

    private OrderRepository orderRepo;

    public OrderController(OrderRepository orderRepo) {
        this.orderRepo = orderRepo;
    }

    @GetMapping("/current")
    public String orderForm() {
        return "orderForm";
    }

    @PostMapping
    public String processOrder(@Valid Order order, Errors errors,
                               SessionStatus sessionStatus) {
        if (errors.hasErrors()) {
            return "orderForm";
        }

        orderRepo.save(order);
        sessionStatus.setComplete();

        return "redirect:/";
    }

}

和orderForm：

<!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="${order}">
    <h1>Order your taco creations!</h1>

    <img th:src="@{/images/TacoCloud.png}"/>
    <a th:href="@{/design}" id="another">Design another taco</a><br/>

    <div th:if="${#fields.hasErrors()}">
        <span class="validationError">
        Please correct the problems below and resubmit.
        </span>
    </div>

    <h3>Deliver my taco masterpieces to...</h3>
    <label for="name">Name: </label>
    <input type="text" th:field="*{name}"/>
    <br/>

    <label for="street">Street address: </label>
    <input type="text" th:field="*{street}"/>
    <br/>

    <label for="city">City: </label>
    <input type="text" th:field="*{city}"/>
    <br/>

    <label for="state">State: </label>
    <input type="text" th:field="*{state}"/>
    <br/>

    <label for="zip">Zip code: </label>
    <input type="text" th:field="*{zip}"/>
    <br/>

    <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>

    <label for="ccExpiration">Expiration: </label>
    <input type="text" th:field="*{ccExpiration}"/>
    <br/>

    <label for="ccCVV">CVV: </label>
    <input type="text" th:field="*{ccCVV}"/>
    <br/>

    <input type="submit" value="Submit order"/>
</form>


</body>
</html>

java

html

spring

thymeleaf

回答 4

Stack Overflow用户

回答已采纳

发布于 2019-05-30 14:03:16

我修正了添加delivery前缀的代码：

    <!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="${order}">
    <h1>Order your taco creations!</h1>

    <img th:src="@{/images/TacoCloud.png}"/>

    <h3>Your tacos in this order:</h3>
    <a th:href="@{/design}" id="another">Design another taco</a><br/>
    <ul>
        <li th:each="taco : ${order.tacos}"><span th:text="${taco.name}">taco name</span></li>
    </ul>

    <div th:if="${#fields.hasErrors()}">
        <span class="validationError">
        Please correct the problems below and resubmit.
        </span>
    </div>

    <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}">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}">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}">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}">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}">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 Num 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 Num Error</span>
    <br/>

    <input type="submit" value="Submit order"/>
</form>

</body>
</html>

票数 3

Stack Overflow用户

发布于 2019-05-25 08:51:24

您在th:object="${order}"模板中使用orderForm，但是Thymeleaf不知道它。您必须让Thymeleaf知道这个对象，将它传递给模板，如下所示

@GetMapping("/current")
public ModelAndView orderForm() {
    ModelAndView mv = new ModelAndView("orderForm");
    mv.addObject("order", new Order());
    return mv;
}

注意:您必须在模板中使用该对象的所有位置从控制器层传递该对象。

更新1

还更新了post方法

@PostMapping
public ModelAndView processOrder(@Valid Order order, Errors errors,
                           SessionStatus sessionStatus) {
    if (errors.hasErrors()) {
        ModelAndView mv = new ModelAndView("orderForm");
        mv.addObject("order", new Order());
        return mv;
    }

    orderRepo.save(order);
    sessionStatus.setComplete();

    return new ModelAndView("redirect:/");
}

票数 0

Stack Overflow用户

发布于 2019-05-25 09:09:03

我想你可以这样做

@Controller
public class OrderController {

   @GetMapping("/orders")
   public String orders(Order order) {
      return "orderForm";
   }

   @PostMapping("/orders")
   public String orderForm(@Valid Order order, BindingResult result, Model model) {
       if(result.hasErrors()) {
           return "orderForm";
       } else {
           retrun "your_success_view";   
       }
    }
}