java-spring boot-hibernate-jpa（post@manytoone错误）

Question

我有两个模型，一个为客户，一个为卖家，在客户表中，我只需要一个卖家，已经在卖家表中，我可以有几个客户为一个卖家。

但是当我试图添加一个新客户，设置销售人员的id，它就是不起作用。

代码如下：

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    package com.crud.spring.jpa.postgresql.model;
    
    import lombok.AllArgsConstructor;
    import lombok.Getter;
    import lombok.Setter;
    
    import javax.persistence.*;
    
    @Entity
    @AllArgsConstructor
    @Getter
    @Setter
    @Table(name = "sellers", uniqueConstraints = @UniqueConstraint(columnNames = "code"))
    public class Seller {
    
      @Id
      @GeneratedValue(strategy = GenerationType.AUTO)
      private Long id;
    
      @Column(name = "code")
      private long code;
    
      @Column(name = "name")
      private String name;
    
      public Seller(){
      }
    }

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    package com.crud.spring.jpa.postgresql.model;
    
    import com.fasterxml.jackson.annotation.JsonIgnore;
    import lombok.AllArgsConstructor;
    import lombok.Getter;
    import lombok.Setter;
    import org.hibernate.annotations.OnDelete;
    import org.hibernate.annotations.OnDeleteAction;
    
    import javax.persistence.*;
    
    @Entity
    @AllArgsConstructor
    @Getter
    @Setter
    @Table(name = "clients", uniqueConstraints = @UniqueConstraint(columnNames = "code"))
    public class Client {
    
      @Id
      @GeneratedValue(strategy = GenerationType.AUTO)
      private Long id;
    
      @Column(name = "code")
      private long code;
    
      @Column(name = "name")
      private String name;
    
      @ManyToOne(fetch = FetchType.LAZY, optional = false)
      @JoinColumn(name = "seller_id", referencedColumnName = "id", nullable = false)
      @OnDelete(action = OnDeleteAction.CASCADE)
      @JsonIgnore
      private Seller seller;
    
      public Client(){
      }
    }

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    @PostMapping("/clients")
    public ResponseEntity createClients(@RequestBody Client client) {
      return this.service.createClients(client);
    }

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    public ResponseEntity createClients(Client client) {
      try {
        client = this.repository.save(client);
    
        return new ResponseEntity(client, HttpStatus.OK);
      } catch (Exception e){
        return new ResponseEntity(e, HttpStatus.INTERNAL_SERVER_ERROR);
      }
    }

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• 发布客户端:

• 错误为:

“entityName”：“com.crud.spring.jpa.postgreql.model.client”，“propertyName”：“seller”，“message”：“not-null属性引用null或瞬态值：com.crud.spring.jpa.postgreql.model.client.seller”，“localizedMessage”：“not-null属性引用null或瞬态值：com.crud.spring.jpa.postgreql.model.client.seller”，“propertyName”：“not-null属性引用null或null或瞬态值：com.crud.spring.jpa.postgreql.model.client.seller”，在这里输入代码“localizedmessage”：“not-null属性引用null或瞬态值：com.crud.spring.jpa.postgreql.model.client.seller；嵌套异常是org.hibernate.propertyValueException：not-null属性引用null或瞬态值：com.crud.spring.jpa.postgreql.model.client.seller”，

Answer 1

在json中尝试“seller”：{“id”：15}insted of“seller_id”：15