db.command.push新增一条数据结果却是新增了一个长度为一的数组

2019-10-13T08:20:22.436Z  { amount: 1,

avatarUrl: '',

createTime: 1570954822026,

creator: '',

date: '2019-10-13',

editTime: 1570954822026,

nickName: '将何往',

picturePathes: [],

remark: '',

tags: [ '其他' ],

type: 'pay',

voicePathes: [] }

2019-10-13T08:20:22.437Z  [ { amount: 1,

avatarUrl: '',

createTime: 1570954822026,

creator: '',

date: '2019-10-13',

editTime: 1570954822026,

nickName: '将何往',

picturePathes: [],

remark: '',

tags: [ '其他' ],

type: 'pay',

voicePathes: [] } ]