Could not write JSON: Infinite recursion (StackOverflowError) Spring Boot - spring-boot

Question

I am new in spring boot. When I tried to learn entity mapping (simple CRUD project), I got some problems in ManyToMany mapping and cannot solve that. I followed many solution and tried but can not solve this problem.
There are 2 entity. One is Student and One is Subject.
Student Entity:
package com.example.demoschoolrelational.entity;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonManagedReference;
import lombok.Data;
import javax.persistence.*;
import java.util.HashSet;
import java.util.Set;
#Data //lombok
#Entity
public class Student implements Comparable<Student>{
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private long roll;
private String studentName;
#ManyToMany(mappedBy = "enrolledStudent",cascade = CascadeType.ALL,fetch = FetchType.LAZY)
// #JsonIgnoreProperties("enrolledStudent")
// #JsonIgnore
#JsonManagedReference(value = "enrolledStudent")
private Set<Subject> enrolledSubject = new HashSet<>();
public void enrollSubject(Subject sub1) {
enrolledSubject.add(sub1);
}
#Override
public int compareTo(Student thatStudent) {
long rollCompare = ((Student) thatStudent).getRoll();
return (int)(this.roll-rollCompare);
}
}
Subject Entity:
package com.example.demoschoolrelational.entity;
import com.fasterxml.jackson.annotation.JsonBackReference;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import lombok.Data;
import javax.persistence.*;
import java.util.HashSet;
import java.util.Set;
#Data
#Entity
public class Subject {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private long id;
private String subjectName;
#ManyToMany(cascade = CascadeType.ALL,fetch = FetchType.LAZY)
#JoinTable(
name = "student_enrolled_sub",
joinColumns = #JoinColumn(name = "subject_id"),
inverseJoinColumns = #JoinColumn(name = "student_id")
)
#JsonBackReference(value = "enrolledSubject")
// #JsonIgnoreProperties("enrolledSubject")
private Set<Student> enrolledStudent = new HashSet<>();
}
Error Msg:
2022-10-06 15:48:23.839 WARN 21576 --- [nio-8080-exec-2] .w.s.m.s.DefaultHandlerExceptionResolver : Resolved [org.springframework.http.converter.HttpMessageNotWritableException: Could not write JSON: Infinite recursion (StackOverflowError); nested exception is com.fasterxml.jackson.databind.JsonMappingException: Infinite recursion (StackOverflowError) (through reference chain: java.util.ArrayList[0]->com.example.demoschoolrelational.entity.Student["enrolledSubject"])]
2022-10-06 15:48:23.841 WARN 21576 --- [nio-8080-exec-2] o.h.e.loading.internal.LoadContexts : HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext#10e0ce3e<rs=HikariProxyResultSet#2034992128 wrapping org.postgresql.jdbc.PgResultSet#29eb4bd>
2022-10-06 15:48:23.841 WARN 21576 --- [nio-8080-exec-2] o.h.e.loading.internal.LoadContexts : HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext#62b79155<rs=HikariProxyResultSet#821266690 wrapping org.postgresql.jdbc.PgResultSet#3a4ffafb>
2022-10-06 15:48:23.841 WARN 21576 --- [nio-8080-exec-2] o.h.e.loading.internal.LoadContexts : HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext#2c4852b2<rs=HikariProxyResultSet#1276455940 wrapping org.postgresql.jdbc.PgResultSet#5b0420da>
2022-10-06 15:48:23.841 WARN 21576 --- [nio-8080-exec-2] o.h.e.loading.internal.LoadContexts : HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext#5673fd6<rs=HikariProxyResultSet#1015611142 wrapping org.postgresql.jdbc.PgResultSet#40ba95a3>
2022-10-06 15:48:23.841 WARN 21576 --- [nio-8080-exec-2] o.h.e.loading.internal.LoadContexts : HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext#2e8992c4<rs=HikariProxyResultSet#263607175 wrapping org.postgresql.jdbc.PgResultSet#5471653f>
2022-10-06 15:48:23.841 WARN 21576 --- [nio-8080-exec-2] o.h.e.loading.internal.LoadContexts : HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext#685469e8<rs=HikariProxyResultSet#1949976072 wrapping org.postgresql.jdbc.PgResultSet#7c57fecc>
I tried #JsonIgnoreProperties("enrolledStudent"), #JsonIgnore , #JsonManagedReference(value = "enrolledStudent"). I got all subject list.
[
{
"id": 1,
"subjectName": "subject1"
},
{
"id": 2,
"subjectName": "subject2"
},
{
"id": 3,
"subjectName": "subject3"
}
]
But can not get the student list. Got error and that is:
{
"timestamp": "2022-10-06T09:48:23.868+00:00",
"status": 500,
"error": "Internal Server Error",
"path": "/students"
}
How can I solve this error? Thank You.