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

In the Statemaster class make districtmasters a List instead of Set and change the getter method accordingly: public List getDistrictmasters(). Unfortunately I can not explain why, but this worked for me.