Go Firestore从集合中获取所有文档

package main

import (
    "context"
    "fmt"
    "google.golang.org/api/iterator"
    "google.golang.org/api/option"
    "cloud.google.com/go/firestore"
)

func main() {
    // 设置 Google Cloud Platform 项目 ID
    projectID := "your-project-id"

    // 创建 Firestore 客户端
    ctx := context.Background()
    client, err := firestore.NewClient(ctx, projectID, option.WithCredentialsFile("path/to/your/credentials.json"))
    if err != nil {
        fmt.Printf("Failed to create Firestore client: %v", err)
        return
    }
    defer client.Close()

    // 获取集合中的所有文档
    collectionName := "your-collection-name"
    iter := client.Collection(collectionName).Documents(ctx)

    // 遍历并打印每个文档的数据
    for {
        doc, err := iter.Next()
        if err == iterator.Done {
            break
        }
        if err != nil {
            fmt.Printf("Failed to iterate documents: %v", err)
            return
        }
        fmt.Printf("Document ID: %s, Data: %+v\n", doc.Ref.ID, doc.Data())
    }
}