mongotemplate 进行unset操作
qiudaozhang
Posted on June 15, 2022
背景
需要将某个数据的某个字段移除，并非设置为null，或者空字符串等 。
mongo shell操作可以如下
db.集合名称.updateOne({id:"xxx"},{
$unset: {"属性":"" }
})
翻译成kotlin的写法如下
override fun unsetPicture(id: String) {
val query = Query()
query.addCriteria(Criteria.where("id").`is`(id))
val update = Update()
update.unset("picture")
mongoTemplate.updateFirst(query, update, clz)
}
如果没有存储id，使用_id 进行判断即可
💖 💪 🙅 🚩
qiudaozhang
Posted on June 15, 2022
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