如何在go中正确过滤mongodb查询

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

client, err := mongo.Connect(context.TODO(), options.Client().ApplyURI("mongodb://localhost:27017"))
if err != nil {
    // 处理连接错误
}
defer client.Disconnect(context.TODO())

collection := client.Database("your_database").Collection("your_collection")

filter := bson.D{
    {"field1", "value1"},
    {"field2", "value2"},
}

cursor, err := collection.Find(context.TODO(), filter)
if err != nil {
    // 处理查询错误
}
defer cursor.Close(context.TODO())

for cursor.Next(context.TODO()) {
    var result bson.M
    err := cursor.Decode(&result)
    if err != nil {
        // 处理解码错误
    }
    // 处理查询结果
}
if err := cursor.Err(); err != nil {
    // 处理游标错误
}