Spring Boot 不会增加 long 类型的自动生成的 id

Question

I'm creating a collection with a Long id type called idPallet which should be incremented.

Pallet.java (collection)

package com.example.ShippingTest.collections;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.SequenceGenerator;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.data.annotation.Id;
import java.util.List;

@Data
@NoArgsConstructor
@AllArgsConstructor

public class Pallet {
    @Id
    @GeneratedValue(generator = "pallet_seq",strategy = GenerationType.IDENTITY)
    @SequenceGenerator(name = "pallet_seq",sequenceName = "pallet",initialValue = 1,allocationSize = 1)
   //@JsonIgnore
    private Long idPallet;
    private int maxPallet;
    private String typePallet;
    private String shipAddress;
    private String shipLocation;
    private String shipCountry;
    private String destination;
    private List<PS> PackingSlip;
}

PalletController

@PostMapping("/pallets")
    public void savePallet(@RequestBody Pallet pallet) {
        palletRepo.save(pallet);
    }

Repository

package com.example.ShippingTest.repositories;

import com.example.ShippingTest.collections.Pallet;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface PalletRepo extends MongoRepository<Pallet,Long> {
    public Pallet findOrderByidPallet(Long idPallet);
}

whenever I try to post a new Pallet, this Exception get displayed: "message": "Cannot autogenerate id of type java.lang.Long for entity of type com.example.ShippingTest.collections.Pallet",

I tried this without @SequenceGenerator, and even after using it, the post didn't work. when I add @Entity in Pallet.java I get error with obligation of adding another id: 'Basic' attribute type should not be a container.

Answer 1

I think you are missing @Entity annotation.