如何获取MongoDB+SpringBoot中最后插入的对象的ID

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-mongodb</artifactId>
</dependency>

import org.springframework.data.annotation.Id;
import org.springframework.data.mongodb.core.mapping.Document;

@Document(collection = "your_collection_name")
public class YourEntity {
    @Id
    private String id;
    // other fields and methods
}

import org.springframework.data.mongodb.repository.MongoRepository;

public interface YourRepository extends MongoRepository<YourEntity, String> {
    // other custom methods if needed
}

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class YourService {
    private final YourRepository yourRepository;

    @Autowired
    public YourService(YourRepository yourRepository) {
        this.yourRepository = yourRepository;
    }

    public void saveEntity(YourEntity entity) {
        YourEntity savedEntity = yourRepository.save(entity);
        String lastInsertedId = savedEntity.getId();
        // do something with the last inserted ID
    }
}