使用@OneToMany 时 JPA 导致无限循环

Question

我有两个实体，称为课程和主题。 这是一对多的关系。 当我得到所有课程的列表时，我得到了奇怪的结果。 看起来它正在获得一个很长的无限循环结果（我得到的 JSON 响应只是其中的一部分，但它会一直持续下去）

我的 ERD 的图片

[
    {
        "id": "Java",
        "name": "Java",
        "descr": "This course goes over Java",
        "topic": [
            {
                "id": "java-core",
                "name": "Java core",
                "descr": "This topic goes over java core",
                "course": {
                    "id": "Java",
                    "name": "Java",
                    "descr": "This course goes over Java",
                    "topic": [
                        {
                            "id": "java-core",
                            "name": "Java core",
                            "descr": "This topic goes over java core",
                            "course": {
                                "id": "Java",
                                "name": "Java",
                                "descr": "This course goes over Java",
                                "topic": [
                                    {
                                        "id": "java-core",
                                        "name": "Java core",
                                        "descr": "This topic goes over java core",
                                        "course": {
                                            "id": "Java",
                                            "name": "Java",
                                            "descr": "This course goes over Java",
                                            "topic": [
                                                {
                                                    "id": "java-core",
                                                    "name": "Java core",
                                                    "descr": "This topic goes over java core",
                                                    "course": {
                                                        "id": "Java",
                                                        "name": "Java",
                                                        "descr": "This course goes over Java",
                                                        "topic": [
                                                            {
                                                                "id": "java-core",
                                                                "name": "Java core",
                                                                "descr": "This topic goes over java core",

Answer 1

利用

实例化的第一个对象的@JsonManagedReference注释

实例化的第二个对象的@JsonBackReference注释