java – 如何在Spring数据休息中返回深层嵌套投影？

@Entity
class Department{
    Set

@Projection(name = "fullDepartment",types = { Department.class })
public interface DepartmentsProjection {
    Set

一种方法是为嵌套对象创建一个Projection,然后在更全局的对象中使用此投影.因此,根据您的问题,您可以为国籍创建一个投影,然后为部门创建一个投影来捕获国籍的投影,最后是另一个投影以获得部门的实体.

@Projection(name = "NationalityProjection",types = { Nationality.class })
public interface NationalityProjection{
    // getters of all attributes you want to project
}

@Projection(name = "employeeProjection",types = { employee.class })
public interface employeeProjection{
    NationalityProjection getNationality();
}

@Projection(name = "DepartmentProjection",types = { Department.class })
public interface DepartmentProjection{
    Set

希望能帮助到你！