Could not write JSON: Infinite recursion (StackOverflowError); nested exception spring boot

Question

This is my District Controller, when I try to fetch data after saving I get the error, even when I try get object form getDistrict(Long id) the same strikes ple

Answer 1

Looks like your problem is Hibernate relations. When you try to serialize the entity Statemaster the serializer calls serialization of the Districtmaster set which in turn somehow reference the Statemaster again.

There are two possible ways to solve:

1. Unproxy object
2. Create DTO (Data Transfer Object) - kind of copy of your entity where all necessary fields should be assigned and return the DTO.