mongodb-bson3.go

//++++++++++++++++++++++++++++++++++++++++
// 《Go Web编程实战派从入门到精通》源码
//++++++++++++++++++++++++++++++++++++++++
// Author:廖显东（ShirDon）
// Blog:https://www.shirdon.com/
// 仓库地址：https://gitee.com/shirdonl/goWebActualCombat
// 仓库地址：https://github.com/shirdonl/goWebActualCombat
//++++++++++++++++++++++++++++++++++++++++

package main

import (
	"context"
	"gitee.com/shirdonl/goWebActualCombat/chapter4/model"
	"gitee.com/shirdonl/goWebActualCombat/chapter4/mongodb"
	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo"
	"log"
)

func main() {
	var (
		client     = mongodb.MgoCli()
		collection *mongo.Collection
		err        error
		uResult    *mongo.UpdateResult
	)
	collection = client.Database("my_db").Collection("table1")
	filter := bson.M{"jobName": "job multi1"}
	update := bson.M{"$set": model.
		UpdateByJobName{Command: "byModel",Content:"model"}}
	if uResult, err = collection.
		UpdateMany(context.TODO(), filter, update); err != nil {
		log.Fatal(err)
	}
	//uResult.MatchedCount表示符合过滤条件的记录数，即更新了多少条数据。
	log.Println(uResult.MatchedCount)
}