StudyPromotionLogVo

{
    "promotionId": 0,
    "deptId": 0,
    "classId": 0,
    "className": "string",
    "gradeIdOld": 0,
    "gradeIdNew": 0,
    "status": "string",
    "deptName": "string",
    "gradeOldName": "string",
    "gradeNewName": "string",
    "enrollmentYear": "string",
    "promotionTime": "2019-08-24T14:15:22.123Z",
    "createName": "string"
}