解决一对多 多对多关系的循环查询导致stackOverFlow问题

有两个多对多关系的实体类

@Entity
public class Station {
    private List<Customer> customerList;
    private ...
    ...

    @ManyToMany
    @JoinTable(name = "customer_station", catalog = "", schema = "examination", joinColumns = @JoinColumn(name = "station_id", referencedColumnName = "id", nullable = false), inverseJoinColumns = @JoinColumn(name = "customer_id", referencedColumnName = "id", nullable = false))
    public List<Customer> getCustomerList() {
        return customerList;
    }

    public void setCustomerList(List<Customer> customerList) {
        this.customerList = customerList;
    }

@Entity
public class Customer {
    private List<Station> stationList;
    private ...
    ...

    @ManyToMany
    @JoinTable(name = "customer_station", catalog = "", schema = "examination", joinColumns = @JoinColumn(name = "customer_id", referencedColumnName = "id", nullable = false), inverseJoinColumns = @JoinColumn(name = "station_id", referencedColumnName = "id", nullable = false))
    public List<Station> getStationList() {
        return stationList;
    }

当我们获取一个customer时，会出现stackOverFlow错误

customerRepository.findOne(1)

这是因为在查询customer时会查询与其关联的所有station，查询与其关联的所有station时又会查询与这个station关联的所有customer，无尽的查询就这样开始了。

使用@JsonIgnoreProperties可以解决这一问题

@Entity
public class Station {
    private List<Customer> customerList;
    private ...
    ...

    @ManyToMany
    @JsonIgnoreProperties(value = { "stationList" })// 解决循环查找的问题
    @JoinTable(name = "customer_station", catalog = "", schema = "examination", joinColumns = @JoinColumn(name = "station_id", referencedColumnName = "id", nullable = false), inverseJoinColumns = @JoinColumn(name = "customer_id", referencedColumnName = "id", nullable = false))
    public List<Customer> getCustomerList() {
        return customerList;
    }

    public void setCustomerList(List<Customer> customerList) {
        this.customerList = customerList;
    }

@Entity
public class Customer {
    private List<Station> stationList;
    private ...
    ...

    @ManyToMany
    @JsonIgnoreProperties(value = "customerList")
    @JoinTable(name = "customer_station", catalog = "", schema = "examination", joinColumns = @JoinColumn(name = "customer_id", referencedColumnName = "id", nullable = false), inverseJoinColumns = @JoinColumn(name = "station_id", referencedColumnName = "id", nullable = false))
    public List<Station> getStationList() {
        return stationList;
    }