go mogodb查詢_id和根據_id查詢記錄

package main

import (

	"context"

	"fmt"

	"log"

	"go.mongodb.org/mongo-driver/bson/primitive"

	"go.mongodb.org/mongo-driver/mongo"

	"go.mongodb.org/mongo-driver/mongo/options"

	"gopkg.in/mgo.v2"

	"gopkg.in/mgo.v2/bson"

)

type Person struct {

	Name   string

	Phone  string

	Idcard string

}

type Student struct {

	Id              string            `json:"id" bson:"_id"`

	Mobile          string            `json:"mobile"`         //手機號碼

}

func main() {

	url := "mongodb://??"

	var (

		client *mongo.Client

		err    error

	)

	// 建立mongodb連接

	clientOptions := options.Client().ApplyURI(url)

	if client, err = mongo.Connect(

		context.TODO(), clientOptions); err != nil {

		return

	}

	// 2, 選擇數據庫my_db

	database := client.Database("my_db")

	// 3, 選擇表my_collection

	collection := database.Collection("my_collection")

	// 檢查連接

	err = client.Ping(context.TODO(), nil)

	if err != nil {

		log.Fatal(err)

	}

	fmt.Println("Connected to MongoDB!")

	//objID := bson.ObjectIdHex("356535323637353662626665656330326239646661383261")

	//objID := bson.ObjectIdHex("5e526756bbfeec02b9dfa82a")

	objID, _ := primitive.ObjectIDFromHex("5e526756bbfeec02b9dfa82a")

	var result Student

	//err = collection.FindOne(context.TODO(), bson.M{"mobile": "1888888888"}).Decode(&result)

	err = collection.FindOne(context.TODO(), bson.M{"_id": objID}).Decode(&result)

	if err != nil {

		log.Fatal(err)

	}

	fmt.Printf("Found a single document: %+v\n", result)

}