Getting : Could not write JSON: Infinite recursion (StackOverflowError); nested exception is com.fasterxml.jackson.databind.JsonMappingException

Question

I am creating a gym application

Following Entities ClientEntity

TrainerEntity

clientController

trainerController

ClientApi

trainer Api

I have created a bi directional mapping b/w trainer Entity and client entity

When I do findall for client or trainer I an getting nested json as in the Client api and is same with trainer api and is giving JSON: Infinite recursion (StackOverflowError);

Here I want from client api

[
    {
        "id": 1,
        "name": "Bharath",
        "address": "#34324 Address",
        "trainerEntity": {
            "id": 1,
            "name": "Niranjan",
         }
    }
]

trainer api:

[
    {
        "id": 1,
        "name": "Niranjan",
        "clientEntity": {
            "id": 1,
            "name": "Bharath",
            "address": "#34324 Address"
         }
     }
]

Answer 1

You can use @JsonIgnoreProperties , there is a similar question already asked Infinite Recursion with Jackson JSON and Hibernate JPA issue You can use @JsonIgnoreProperties(value ="clientEntity" ) Private TrainerEntity trainerEntity and similarly for the the other side too

A better option is to use Dto's instead of entities to send the response as json.