jpa实体对象调用set方法会自动修改数据库

一旦将属性set  ,jpa会自动修改

import org.springframework.beans.BeanUtils;

        JobPO jobPOre = jobService.getByJobId(jobId).orElse(null);
        if(jobPOre==null){return RestResult.success();}
        JobPO jobPO = new JobPO();
        BeanUtils.copyProperties(jobPOre,jobPO);