Java 批更新-具有相同标识符值的不同对象已与会话关联

我搜索了一些答案，但找不到与我相似的案例

我有几个字段的实体类，它们都是简单的java变量类型。它们都不是多对一的

@Data
@Entity
@Builder
@EqualsAndHashCode
public class TPXXXXX

@Id
@SequenceGenerator(name = "STAGING_XXXXX", sequenceName = "STAGING_XXXXX_SEQ")
@GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "STAGING_XXXXX")
private Long id;

我在处理过程中所做的就是-

从存储库中查找id和对象之间的映射

迭代上面映射出来的列表

创建一个新实体

存储新实体

private int methodOne(List<String> ids){

    Map<String, List<Tpo>> idAndObjMappings = repository.findXXXXX(ids).stream().collect(Collectors.groupingBy(Tpo::getId));

    for(String id: ids){

        List<Tpo> tpoList = idAndObjMappings.get(id);
        List<TPXXXXX> tpxxxx = generateAnotherEntity(tpoList);
        tpxxxx.addAll(tpxxxx);
    }
    
    int count = store(tpxxxx);
    
    }

private List<TPXXXXX> generateAnotherEntity(List<Tpo> tpoList){
    List<TPXXXXX> tpEntityList = new ArrayList<>();
    tpoList.forEach(tpo -> {
        TPXXXXX tpEntity = TPXXXXX.builder().settersU().build();
        tpEntityList.add(tpEntity)
        }
        return tpEntityList;
    }
    
    
    private int store(List<TPXXXXX> tpList){
        int entityCount = 0;
        for(TPXXXXX tp: tpList){
        
            if (entityCount > 0 && (entityCount % batchSize == 0 || entityCount == tpList.size())) {
                entityManager.flush();
                entityManager.clear();
            }
            entityManager.persist(tp);
            entityCount++;
        }
        return entityCount;
    }

Caused by: org.springframework.dao.DataIntegrityViolationException: A different object with the same identifier value was already associated with the session : 
[.TPXXXXXX#2693]; nested exception is javax.persistence.EntityExistsException: 
A different object with the same identifier value was already associated with the session : [TPXXXXX#2693]