Question

从控制器我发送像这样的BinderPlaceOrder对象

model.addAttribute("addNewBinderPlaceOrder", new BinderPlaceOrder());

我的Thymeleaf页面是，

＆＃13;

<form class="addBinderPlaceOrderForm" role="form" action="#" th:action="@{/binderPlaceOrder/new-binderPlaceOrder}" th:object="${addNewBinderPlaceOrder}" method="post">      
  
  <div class="form-group">
        <label>Book</label>
        <select class="form-control" th:field="*{binderOrderItemDetails.book}">
            <option th:if="${book} == null" value=" " >Select Book</option>
            <option th:each="book : ${allBook}"
                    th:value="${book.id}"
                    th:text="${book.name}">
            </option>
        </select>
    </div> 
  
  <form>

＆＃13;

这是控制器，

@Controller
@RequestMapping("/binderPlaceOrder")
public class BinderPlaceOrderController{

@Autowired
BinderPlaceOrderService binderPlaceOrderService;

@Autowired
BookService bookService;

@RequestMapping(value="/new-binderPlaceOrder", method = RequestMethod.GET)
public String newBinderPlaceOrder(Model model){

    model.addAttribute("addNewBinderPlaceOrder", new BinderPlaceOrder());

    model.addAttribute("allBook", bookService.getAllBooks();

    model.addAttribute("addNewBinderOrderItemDetails", new BinderOrderItemDetails());

    return "user/binderPlaceOrder/new";
}
}

在运行期间，我收到以下错误

org.springframework.beans.NotReadablePropertyException：无效的属性＆＃39; binderOrderItemDetails.book＆＃39; bean类[PublisherInventory.model.user.BinderPlaceOrder]：Bean属性＆＃39; binderOrderItemDetails.book＆＃39;不可读或getter方法无效：getter的返回类型是否与setter的参数类型匹配？

以下是课程。

请注意，每个班级都有自己的Id属性以及其他属性。为了便于阅读，省略了这些内容。

这是BinderPlaceOrder Class，

@Entity
public class BinderPlaceOrder implements Comparator<BinderPlaceOrder> {    

@OneToMany(mappedBy = "binderPlaceOrder", fetch = FetchType.LAZY, cascade = CascadeType.ALL)
private List<BinderOrderItemDetails> binderOrderItemDetails;   

public List<BinderOrderItemDetails> getBinderOrderItemDetails() {
    return binderOrderItemDetails;
}

public void setBinderOrderItemDetails(List<BinderOrderItemDetails> binderOrderItemDetails) {
    this.binderOrderItemDetails = binderOrderItemDetails;
}

}

这是BinderOrderItemDetails类

@Entity
@Indexed
public class BinderOrderItemDetails {

@OneToOne(fetch = FetchType.EAGER,cascade = CascadeType.ALL)
@JoinColumn(name="bookId")
private Book book;

@ManyToOne(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
@JoinColumn(name="binderPlaceOrderId")
private BinderPlaceOrder binderPlaceOrder;       

public Book getBook() { return book; }

public void setBook(Book book) { this.book = book; }    

public BinderPlaceOrder getBinderPlaceOrder() { return binderPlaceOrder; }

public void setBinderPlaceOrder(BinderPlaceOrder binderPlaceOrder) {
 this.binderPlaceOrder = binderPlaceOrder; }    
}

这是Book Class

@Entity
@Indexed
public class Book implements Comparator<Book> {

@Column(name = "name")
@NotNull
@NotBlank 
private String name;

public String getName() {  return name; }
public void setName(String name) { this.name = name;}    
}

你能否告诉我我做错了什么或如何解决？

提前致谢。

Answer 1

正如@JBNizet指出的那样，你的 BinderPlaceOrder 已经

public List<BinderOrderItemDetails> getBinderOrderItemDetails() {
    return binderOrderItemDetails;
}

这是一个列表，因此

th:field="*{binderOrderItemDetails.book}"

不正确，

但是你想插入第一个元素

 th:field="${binderOrderItemDetails[0].book}"

org.springframework.beans.NotReadablePropertyException：

1 个答案: