循环遍历mongodb中的集合并解码为各种go结构

import (
    "context"
    "fmt"
    "go.mongodb.org/mongo-driver/bson"
    "go.mongodb.org/mongo-driver/mongo"
    "go.mongodb.org/mongo-driver/mongo/options"
)

clientOptions := options.Client().ApplyURI("mongodb://localhost:27017")
client, err := mongo.Connect(context.TODO(), clientOptions)
if err != nil {
    fmt.Println("Failed to connect to MongoDB:", err)
    return
}
defer client.Disconnect(context.TODO())

database := client.Database("mydb")
collection := database.Collection("mycollection")

cur, err := collection.Find(context.TODO(), bson.D{})
if err != nil {
    fmt.Println("Failed to find documents:", err)
    return
}
defer cur.Close(context.TODO())

for cur.Next(context.TODO()) {
    var result MyStruct
    err := cur.Decode(&result)
    if err != nil {
        fmt.Println("Failed to decode document:", err)
        return
    }
    // 对解码后的结果进行处理
    fmt.Println(result)
}

if err := cur.Err(); err != nil {
    fmt.Println("Cursor error:", err)
    return
}