找不到针对类org.hibernate.proxy.pojo.bytebuddy.ByteBuddyInterceptor的序列化器 [英] No serializer found for class org.hibernate.proxy.pojo.bytebuddy.ByteBuddyInterceptor

问题描述

当我尝试导航至端点时，出现以下错误

When i try to navigat to an endpoint i get tho following error

类型定义错误:[简单类型，类org.hibernate.proxy.pojo.bytebuddy.ByteBuddyInterceptor]；嵌套的异常是com.fasterxml.jackson.databind.exc.InvalidDefinitionException:未为类org.hibernate.proxy.pojo.bytebuddy.ByteBuddyInterceptor找到序列化器，也未找到创建BeanSerializer的属性(为避免异常，请禁用SerializationFeature.FAIL_ON_EMPTY_BEANS)

我检查了所有模型，所有属性都有getter和setter.那是什么问题呢?

I checked all my models and all the attributes have getters and setters. So what's the problem ?

我可以通过添加spring.jackson.serialization.fail-on-empty-beans=false来解决此问题，但是我认为这只是隐藏异常的一种解决方法.

I can fix that by adding spring.jackson.serialization.fail-on-empty-beans=false but i think this is just a work around to hide the exception.

修改

Product型号:

@Entity
public class Product {
    private int id;
    private String name;
    private String photo;
    private double price;
    private int quantity;
    private Double rating;
    private Provider provider;
    private String description;
    private List<Category> categories = new ArrayList<>();
    private List<Photo> photos = new ArrayList<>();

    // Getters & Setters
}

PagedResponse类别:

public class PagedResponse<T> {

    private List<T> content;
    private int page;
    private int size;
    private long totalElements;
    private int totalPages;
    private boolean last;

    // Getters & Setters
}

RestResponse类别:

public class RestResponse<T> {
    private String status;
    private int code;
    private String message;
    private T result;

    // Getters & Setters
}

在我的控制器中，我返回 ResponseEntity<RestResponse<PagedResponse<Product>>>

In my controller i'm returning ResponseEntity<RestResponse<PagedResponse<Product>>>

推荐答案

您可以通过

@JsonIgnore 

或者如果您有任何具有关系的延迟加载属性.您可以在属性顶部使用此注释.

Or If you have any lazy loaded properties having a relationship. You can use this annotation at top of the property.

@JsonIgnoreProperties({"hibernateLazyInitializer", "handler"}) 

示例:

@Entity
public class Product implements Serializable{
   private int id;
   private String name;
   private String photo;
   private double price;
   private int quantity;
   private Double rating;
   private Provider provider;
   private String description;

   @JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
   private List<Category> categories = new ArrayList<>();

   @JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
   private List<Photo> photos = new ArrayList<>();

   // Getters & Setters
}

如果仍然存在此错误，请在您的application.properties文件中添加此行代码

If you still have this error, please add this line of code in your application.properties file

spring.jackson.serialization.fail-on-empty-beans=false

希望您的问题能得到解决.谢谢.

I hope your problem will be solved. Thanks.

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