如何在不陷入无限的反序列化循环的情况下，将一个关系反序列化为多个关系

here is my Product class

这是我的产品类别。

@Entity
public class Product {

    @ManyToOne(fetch=FetchType.EAGER)
    @JoinColumn(name="listingGroup_id")
    @JsonBackReference
    public ListingGroup listingGroup;

and here is my groupProduct class

这是我的groupProduct类。

@Entity
public class GroupProduct {

    @OneToMany(mappedBy = "listingGroup", fetch = FetchType.EAGER)
    @JsonManagedReference
    Set<Product> products;

GAOL:

*:

1. When I query for product, I want product with ProductGroup (ProductGroup should not serialize again the products inside)
2. 当我查询产品时，我想要product with ProductGroup (ProductGroup不应该再次序列化内部的产品)
3. When I query GroupProduct, I want the products inside (without these list of products each including again the GroupProduct)
4. 当我查询GroupProduct时，我希望产品在其中(没有这些产品列表，每个都包含GroupProduct)

ALREADY TRIED

已经试过

1. JsonBackReference, JsonManagedReference:

   JsonBackReference JsonManagedReference:

   The GroupProduct get everything fine, but

   团购产品一切都很好，但是

   Problem : the deserialized products does not contain the group Product : {id: 1, ... groupProduct: null}

   问题:反序列化产品不包含组产品:{id: 1，…groupProduct:零}

2. JsonIdentityInfo : I am not able anymore to deserialize the objects java.lang.IllegalArgumentException: No converter found for return value of type...

   JsonIdentityInfo:我再也不能反序列化对象java.lang了。IllegalArgumentException:没有找到返回值类型的转换器…

Environment

环境

• spring boot 1.5.8
• 弹簧引导1.5.8
• hibernate 5.0.12
• hibernate 5.0.12
• 'jackson-annotations', version: '2.8.0'
• “jackson-annotations”,版本:“2.8.0”
• 'jackson-databind', version: '2.8.7'
• “jackson-databind”,版本:“2.8.7”

1 个解决方案

#1

I think you need @JsonIgnoreProperties annotation, like this:

我认为您需要@JsonIgnoreProperties注释，如:

@JsonIgnoreProperties("products")
public ListingGroup listingGroup;

or like this:

或者像这样:

@JsonIgnoreProperties("listingGroup")
Set<Product> products;

or both.

或两者兼而有之。