spring - 为什么一些相关实体没有序列化为 JSON？

Question

在 spring-boot 我有两个实体：

package interv.Entities;

import com.fasterxml.jackson.annotation.JsonBackReference;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.format.annotation.DateTimeFormat;

import javax.persistence.*;
import java.io.Serializable;
import java.util.Date;

@Entity
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Intervention implements Serializable {

            @Id @GeneratedValue
            private Long Id;

            private String objet;

            @DateTimeFormat(pattern = "dd/MM/yyyy")
            private Date date;

            @Column(columnDefinition="BOOLEAN DEFAULT false")
            private boolean valid;



            @ManyToOne
            @JoinColumn(name="id_Project")
            @JsonBackReference(value="projet-intervention")
            private Project project;


            @ManyToOne
            @JoinColumn(name = "Id_AppUser")
            @JsonBackReference(value="appuser-intervention")
            private AppUser appUser;

            @ManyToOne
            @JoinColumn(name ="Id_AppDevlopper")
            @JsonBackReference(value="appuser-intervention-devlopper")
            private AppUser app ;

}

还有项目实体：

import com.fasterxml.jackson.annotation.JsonBackReference;
import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
import com.fasterxml.jackson.annotation.JsonManagedReference;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.hibernate.annotations.Fetch;
import org.hibernate.annotations.FetchMode;

import javax.persistence.*;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;

@Entity
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Project implements Serializable{

        @Id @GeneratedValue
        private long id;
        private String intitule;
        private String description;


        @ManyToOne
        @JoinColumn(name = "Id_appUser")
        @JsonBackReference(value="projet-appuser")
        private AppUser appUser;

        @OneToMany(mappedBy = "project")
        @Fetch(value=FetchMode.SUBSELECT)
        @JsonManagedReference(value="projet-intervention")
        private Collection<Intervention> interventions = new ArrayList<Intervention>();



        public void addToIntervention(Intervention intervention) { this.interventions.add(intervention);}


 }

在 angular5 中，我正在尝试使用 spring 的 rest 控制器通过以下查询获取特定用户的干预页面：

@Query("select i from Intervention i where i.appUser = :userApp")
    public Page<Intervention> interventionsOfClient(@Param("userApp") AppUser userApp  , Pageable pageable);

其余控制器：

@RequestMapping(value="clientsintervention",method= RequestMethod.GET)
    public Page<Intervention> getClientsIntervention(
            @RequestParam(name="page",defaultValue = "0") int page,
            @RequestParam(name="size",defaultValue = "5") int size,
            @RequestParam(name="id",defaultValue ="0") Long id
    ){

         AppUser appUser = userRepo.getOne(id);

         return interventionRepo.interventionsOfClient(appUser,new PageRequest(page,size));
    }

此方法返回一个干预页面，每个干预都包含 {id,object,date,valid} 并且没有我期望的对象 Project 并且我想在我的前端页面中使用。

关于如何解决这个问题的任何想法？

标签： springspring-boot