取得所有文件
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
取得 Firestore 集合中的所有文件
深入探索
如需包含這個程式碼範例的詳細說明文件,請參閱下列內容:
程式碼範例
Java
如要向 Firestore 進行驗證,請設定應用程式預設憑證。
詳情請參閱「為本機開發環境設定驗證」。
Node.js
如要向 Firestore 進行驗證,請設定應用程式預設憑證。
詳情請參閱「為本機開發環境設定驗證」。
PHP
如要向 Firestore 進行驗證,請設定應用程式預設憑證。
詳情請參閱「為本機開發環境設定驗證」。
Python
如要向 Firestore 進行驗證,請設定應用程式預設憑證。
詳情請參閱「為本機開發環境設定驗證」。
Ruby
如要向 Firestore 進行驗證,請設定應用程式預設憑證。
詳情請參閱「為本機開發環境設定驗證」。
除非另有註明,否則本頁面中的內容是採用創用 CC 姓名標示 4.0 授權,程式碼範例則為阿帕契 2.0 授權。詳情請參閱《Google Developers 網站政策》。Java 是 Oracle 和/或其關聯企業的註冊商標。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["難以理解","hardToUnderstand","thumb-down"],["資訊或程式碼範例有誤","incorrectInformationOrSampleCode","thumb-down"],["缺少我需要的資訊/範例","missingTheInformationSamplesINeed","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["其他","otherDown","thumb-down"]],[],[[["\u003cp\u003eThis content demonstrates how to retrieve all documents within a Firestore collection using various programming languages.\u003c/p\u003e\n"],["\u003cp\u003eThe provided code samples show how to fetch all documents from the "cities" collection in Firestore using C#, Go, Java, Node.js, PHP, Python, and Ruby.\u003c/p\u003e\n"],["\u003cp\u003eEach code example also highlights the necessity of setting up Application Default Credentials for authentication to Firestore before accessing data.\u003c/p\u003e\n"],["\u003cp\u003eThe document contains links to further resources for users to explore about retrieving and querying data from Firestore.\u003c/p\u003e\n"]]],[],null,["# Get all documents within a Firestore Collection\n\nExplore further\n---------------\n\n\nFor detailed documentation that includes this code sample, see the following:\n\n- [Get data with Cloud Firestore](https://firebase.google.com/docs/firestore/query-data/get-data)\n- [Getting data](/firestore/native/docs/query-data/get-data)\n\nCode sample\n-----------\n\n### C#\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n Query allCitiesQuery = db.Collection(\"cities\");\n QuerySnapshot allCitiesQuerySnapshot = await allCitiesQuery.GetSnapshotAsync();\n foreach (DocumentSnapshot documentSnapshot in allCitiesQuerySnapshot.Documents)\n {\n Console.WriteLine(\"Document data for {0} document:\", documentSnapshot.Id);\n Dictionary\u003cstring, object\u003e city = documentSnapshot.ToDictionary();\n foreach (KeyValuePair\u003cstring, object\u003e pair in city)\n {\n Console.WriteLine(\"{0}: {1}\", pair.Key, pair.Value);\n }\n Console.WriteLine(\"\");\n }\n\n### Go\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n\n import (\n \t\"context\"\n \t\"fmt\"\n\n \t\"cloud.google.com/go/firestore\"\n \t\"google.golang.org/api/iterator\"\n )\n\n func allDocs(ctx context.Context, client *firestore.Client) error {\n \tfmt.Println(\"All cities:\")\n \titer := client.Collection(\"cities\").Documents(ctx)\n \tdefer iter.Stop()\n \tfor {\n \t\tdoc, err := iter.Next()\n \t\tif err == iterator.Done {\n \t\t\tbreak\n \t\t}\n \t\tif err != nil {\n \t\t\treturn err\n \t\t}\n \t\tfmt.Println(doc.https://cloud.google.com/go/docs/reference/cloud.google.com/go/firestore/latest/index.html#cloud_google_com_go_firestore_DocumentSnapshot_Data())\n \t}\n \treturn nil\n }\n\n### Java\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n // asynchronously retrieve all documents\n ApiFuture\u003cQuerySnapshot\u003e future = db.collection(\"cities\").get();\n // future.get() blocks on response\n List\u003cQueryDocumentSnapshot\u003e documents = future.get().getDocuments();\n for (QueryDocumentSnapshot document : documents) {\n System.out.println(document.getId() + \" =\u003e \" + document.toObject(City.class));\n }\n\n### Node.js\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n const citiesRef = db.collection('cities');\n const snapshot = await citiesRef.get();\n snapshot.forEach(doc =\u003e {\n console.log(doc.id, '=\u003e', doc.data());\n });\n\n### PHP\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n $citiesRef = $db-\u003ecollection('samples/php/cities');\n $documents = $citiesRef-\u003edocuments();\n foreach ($documents as $document) {\n if ($document-\u003eexists()) {\n printf('Document data for document %s:' . PHP_EOL, $document-\u003eid());\n print_r($document-\u003edata());\n printf(PHP_EOL);\n } else {\n printf('Document %s does not exist!' . PHP_EOL, $document-\u003eid());\n }\n }\n\n### Python\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n docs = db.collection(\"cities\").stream()\n\n for doc in docs:\n print(f\"{doc.id} =\u003e {doc.to_dict()}\")\n\n### Ruby\n\n\nTo authenticate to Firestore, set up Application Default Credentials.\nFor more information, see\n\n[Set up authentication for a local development environment](/docs/authentication/set-up-adc-local-dev-environment).\n\n cities_ref = firestore.col collection_path\n cities_ref.get do |city|\n puts \"#{city.document_id} data: #{city.data}.\"\n end\n\nWhat's next\n-----------\n\n\nTo search and filter code samples for other Google Cloud products, see the\n[Google Cloud sample browser](/docs/samples?product=firestore)."]]