Golang MongoDB insertMany (如果不存在)

package main

import (
    "context"
    "fmt"
    "log"
    "time"

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

type Person struct {
    Name string
    Age  int
}

func main() {
    // 设置MongoDB连接选项
    clientOptions := options.Client().ApplyURI("mongodb://localhost:27017")

    // 连接到MongoDB
    client, err := mongo.Connect(context.TODO(), clientOptions)
    if err != nil {
        log.Fatal(err)
    }

    // 检查连接
    err = client.Ping(context.TODO(), nil)
    if err != nil {
        log.Fatal(err)
    }

    fmt.Println("Connected to MongoDB!")

    // 选择数据库和集合
    collection := client.Database("mydb").Collection("persons")

    // 创建要插入的文档
    persons := []interface{}{
        Person{Name: "Alice", Age: 25},
        Person{Name: "Bob", Age: 30},
        Person{Name: "Charlie", Age: 35},
    }

    // 执行insertMany操作
    _, err = collection.InsertMany(context.TODO(), persons)
    if err != nil {
        log.Fatal(err)
    }

    fmt.Println("Documents inserted!")
}