无法提交JPA事务;嵌套异常为javax.persistence.RollbackException:提交事务时出错],根本原因为java.lang.UnsupportedOperationException29.670+0000", "error": "Internal Server Error",
return new ResponseEntity<Object>("test 123", HttpStatus.BAD_REQUEST);}路径[]抛出的异常请求处理失败;嵌套异常为org.springframework.transaction.TransactionSystemException:无法提交JPA事务;嵌套异常为