MyBatis/MyBatis-Plus同事务循环调用存储过程获取主键重复问题分析及解决

    @Select("SELECT TABLE.NEXTVAL FROM DUAL")
    String getId();

	@Transactional(rollbackFor = Exception.class)
	public QueryMedicalFeeRes queryMedicalFee(QueryMedicalFeeReq req) {
		for (Obj o : objs) {
			Long id = idMapper.getId();
			log.info("id{}",id);
		}
	}

<select id="getId" resultType="java.lang.Long" useCache="false" flushCache="true">
    SELECT TABLE.NEXTVAL AS ID FROM DUAL
</select>

    @Select("SELECT TABLE.NEXTVAL FROM DUAL")
    @Options(useCache = false, flushCache = Options.FlushCachePolicy.TRUE)
    String getId();

<select id="getId" resultType="java.lang.Long" statementType="CALLABLE" useCache="false" flushCache="true">
    {call GET_NEXT_ID(#{identity,mode=IN,jdbcType=VARCHAR},#{tableName,mode=IN,jdbcType=VARCHAR},#{count,mode=IN,jdbcType=INTEGER},#{currentNo,mode=OUT,jdbcType=INTEGER})}
</select>

```java
    @Select("{call GET_NEXT_ID(#{identity,mode=IN,jdbcType=VARCHAR},#{tableName,mode=IN,jdbcType=VARCHAR},#{count,mode=IN,jdbcType=INTEGER},#{currentNo,mode=OUT,jdbcType=INTEGER})}")
    @Options(statementType = StatementType.CALLABLE, useCache = false, flushCache = Options.FlushCachePolicy.TRUE)
    String getId();