1.查询指定字段db.matrixSignals.find(({}, { id: “607d9de3d95bfe9620234f2f” })2.清空db.myCollection.remove({})
mongoimport --db vstudio -c signal --type json C:\Users\amade\Downloads\signal.json
is vs regexQuery query = new Query(Criteria.where(“age”).is(“34”));Query query = new Query(Criteria.where(“name”).regex(“ing”));
package com.tju.entity;import org.bson.codecs.pojo.annotations.BsonId
use yourDatabase;db.auth(‘yourUsername’,‘yourPassword’)
1.搭建集群2.POM<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-star
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