AWS 文檔 AWS SDK示例 GitHub 回購中有更多SDK示例
本文為英文版的機器翻譯版本,如內容有任何歧義或不一致之處,概以英文版為準。
使用的程式碼範例 AWS SDKs
下列程式碼範例說明如何搭配 AWS 軟體開發套件使用 Amazon DynamoDB () SDK。
Actions 是大型程式的程式碼摘錄,必須在內容中執行。雖然動作會告訴您如何呼叫個別服務函數,但您可以在其相關情境和跨服務範例中查看內容中的動作。
Scenarios (案例) 是向您展示如何呼叫相同服務中的多個函數來完成特定任務的程式碼範例。
Cross-service examples (跨服務範例) 是跨多個 AWS 服務執行的應用程式範例。
其他 資源
DynamoDB 開發人員指南 — 有關 DynamoDB 的詳細資訊。
動態支援API參考 — 有關所有可用 DynamoDB 動作的詳細資料。
AWS 開發人員中心
— 您可以依類別或全文檢索搜尋篩選的程式碼範例。 AWS SDK示例
-使用首選語言的完整代碼的 GitHub 回購。包括設定和執行程式碼的指示。
開始使用
下列程式碼範例示範如何開始使用 DynamoDB。
- .NET
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- AWS SDK for .NET
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注意
還有更多關於 GitHub。尋找完整範例,並了解如何在AWS 設定和執行程式碼範例儲存庫
。 using Amazon.DynamoDBv2; using Amazon.DynamoDBv2.Model; namespace DynamoDB_Actions; public static class HelloDynamoDB { static async Task Main(string[] args) { var dynamoDbClient = new AmazonDynamoDBClient(); Console.WriteLine($"Hello Amazon Dynamo DB! Following are some of your tables:"); Console.WriteLine(); // You can use await and any of the async methods to get a response. // Let's get the first five tables. var response = await dynamoDbClient.ListTablesAsync( new ListTablesRequest() { Limit = 5 }); foreach (var table in response.TableNames) { Console.WriteLine($"\tTable: {table}"); Console.WriteLine(); } } }
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如需詳API細資訊,請參閱AWS SDK for .NET API參考ListTables中的。
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- C++
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- SDK對於 C ++
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注意
還有更多關於 GitHub。尋找完整範例,並了解如何在AWS 設定和執行程式碼範例儲存庫
。 CMakeLists.txt CMake 檔案的程式碼。
# Set the minimum required version of CMake for this project. cmake_minimum_required(VERSION 3.13) # Set the AWS service components used by this project. set(SERVICE_COMPONENTS dynamodb) # Set this project's name. project("hello_dynamodb") # Set the C++ standard to use to build this target. # At least C++ 11 is required for the AWS SDK for C++. set(CMAKE_CXX_STANDARD 11) # Use the MSVC variable to determine if this is a Windows build. set(WINDOWS_BUILD ${MSVC}) if (WINDOWS_BUILD) # Set the location where CMake can find the installed libraries for the AWS SDK. string(REPLACE ";" "/aws-cpp-sdk-all;" SYSTEM_MODULE_PATH "${CMAKE_SYSTEM_PREFIX_PATH}/aws-cpp-sdk-all") list(APPEND CMAKE_PREFIX_PATH ${SYSTEM_MODULE_PATH}) endif () # Find the AWS SDK for C++ package. find_package(AWSSDK REQUIRED COMPONENTS ${SERVICE_COMPONENTS}) if (WINDOWS_BUILD AND AWSSDK_INSTALL_AS_SHARED_LIBS) # Copy relevant AWS SDK for C++ libraries into the current binary directory for running and debugging. # set(BIN_SUB_DIR "/Debug") # if you are building from the command line you may need to uncomment this # and set the proper subdirectory to the executables' location. AWSSDK_CPY_DYN_LIBS(SERVICE_COMPONENTS "" ${CMAKE_CURRENT_BINARY_DIR}${BIN_SUB_DIR}) endif () add_executable(${PROJECT_NAME} hello_dynamodb.cpp) target_link_libraries(${PROJECT_NAME} ${AWSSDK_LINK_LIBRARIES})
hello_dynamodb.cpp 來源檔案的程式碼。
#include <aws/core/Aws.h> #include <aws/dynamodb/DynamoDBClient.h> #include <aws/dynamodb/model/ListTablesRequest.h> #include <iostream> /* * A "Hello DynamoDB" starter application which initializes an Amazon DynamoDB (DynamoDB) client and lists the * DynamoDB tables. * * main function * * Usage: 'hello_dynamodb' * */ int main(int argc, char **argv) { Aws::SDKOptions options; // Optionally change the log level for debugging. // options.loggingOptions.logLevel = Utils::Logging::LogLevel::Debug; Aws::InitAPI(options); // Should only be called once. int result = 0; { Aws::Client::ClientConfiguration clientConfig; // Optional: Set to the AWS Region (overrides config file). // clientConfig.region = "us-east-1"; Aws::DynamoDB::DynamoDBClient dynamodbClient(clientConfig); Aws::DynamoDB::Model::ListTablesRequest listTablesRequest; listTablesRequest.SetLimit(50); do { const Aws::DynamoDB::Model::ListTablesOutcome &outcome = dynamodbClient.ListTables( listTablesRequest); if (!outcome.IsSuccess()) { std::cout << "Error: " << outcome.GetError().GetMessage() << std::endl; result = 1; break; } for (const auto &tableName: outcome.GetResult().GetTableNames()) { std::cout << tableName << std::endl; } listTablesRequest.SetExclusiveStartTableName( outcome.GetResult().GetLastEvaluatedTableName()); } while (!listTablesRequest.GetExclusiveStartTableName().empty()); } Aws::ShutdownAPI(options); // Should only be called once. return result; }
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如需詳API細資訊,請參閱AWS SDK for C++ API參考ListTables中的。
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- Java
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- SDK對於爪哇 2.x
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注意
還有更多關於 GitHub。尋找完整範例,並了解如何在AWS 設定和執行程式碼範例儲存庫
。 import software.amazon.awssdk.regions.Region; import software.amazon.awssdk.services.dynamodb.DynamoDbClient; import software.amazon.awssdk.services.dynamodb.model.DynamoDbException; import software.amazon.awssdk.services.dynamodb.model.ListTablesRequest; import software.amazon.awssdk.services.dynamodb.model.ListTablesResponse; import java.util.List; /** * Before running this Java V2 code example, set up your development * environment, including your credentials. * * For more information, see the following documentation topic: * * https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/get-started.html */ public class ListTables { public static void main(String[] args) { System.out.println("Listing your Amazon DynamoDB tables:\n"); Region region = Region.US_EAST_1; DynamoDbClient ddb = DynamoDbClient.builder() .region(region) .build(); listAllTables(ddb); ddb.close(); } public static void listAllTables(DynamoDbClient ddb) { boolean moreTables = true; String lastName = null; while (moreTables) { try { ListTablesResponse response = null; if (lastName == null) { ListTablesRequest request = ListTablesRequest.builder().build(); response = ddb.listTables(request); } else { ListTablesRequest request = ListTablesRequest.builder() .exclusiveStartTableName(lastName).build(); response = ddb.listTables(request); } List<String> tableNames = response.tableNames(); if (tableNames.size() > 0) { for (String curName : tableNames) { System.out.format("* %s\n", curName); } } else { System.out.println("No tables found!"); System.exit(0); } lastName = response.lastEvaluatedTableName(); if (lastName == null) { moreTables = false; } } catch (DynamoDbException e) { System.err.println(e.getMessage()); System.exit(1); } } System.out.println("\nDone!"); } }
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如需詳API細資訊,請參閱AWS SDK for Java 2.x API參考ListTables中的。
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- JavaScript
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- SDK對於 JavaScript (3)
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注意
還有更多關於 GitHub。尋找完整範例,並了解如何在AWS 設定和執行程式碼範例儲存庫
。 如需有關在中使用 DynamoDB 的詳細資訊 AWS SDK for JavaScript,請參閱使用. JavaScript
import { ListTablesCommand, DynamoDBClient } from "@aws-sdk/client-dynamodb"; const client = new DynamoDBClient({}); export const main = async () => { const command = new ListTablesCommand({}); const response = await client.send(command); console.log(response.TableNames.join("\n")); return response; };
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如需詳API細資訊,請參閱AWS SDK for JavaScript API參考ListTables中的。
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- Python
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- SDK對於 Python(肉毒桿菌 3)
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注意
還有更多關於 GitHub。尋找完整範例,並了解如何在AWS 設定和執行程式碼範例儲存庫
。 import boto3 # Create a DynamoDB client using the default credentials and region dynamodb = boto3.client("dynamodb") # Initialize a paginator for the list_tables operation paginator = dynamodb.get_paginator("list_tables") # Create a PageIterator from the paginator page_iterator = paginator.paginate(Limit=10) # List the tables in the current AWS account print("Here are the DynamoDB tables in your account:") # Use pagination to list all tables table_names = [] for page in page_iterator: for table_name in page.get("TableNames", []): print(f"- {table_name}") table_names.append(table_name) if not table_names: print("You don't have any DynamoDB tables in your account.") else: print(f"\nFound {len(table_names)} tables.")
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如需詳API細資訊,請參閱ListTables中AWS SDK的〈〉以取得 Python (Boto3) API 參考資料。
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- Ruby
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- SDK對於紅寶石
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注意
還有更多關於 GitHub。尋找完整範例,並了解如何在AWS 設定和執行程式碼範例儲存庫
。 require 'aws-sdk-dynamodb' require 'logger' # DynamoDBManager is a class responsible for managing DynamoDB operations # such as listing all tables in the current AWS account. class DynamoDBManager def initialize(client) @client = client @logger = Logger.new($stdout) end # Lists and prints all DynamoDB tables in the current AWS account. def list_tables @logger.info('Here are the DynamoDB tables in your account:') paginator = @client.list_tables(limit: 10) table_names = [] paginator.each_page do |page| page.table_names.each do |table_name| @logger.info("- #{table_name}") table_names << table_name end end if table_names.empty? @logger.info("You don't have any DynamoDB tables in your account.") else @logger.info("\nFound #{table_names.length} tables.") end end end if $PROGRAM_NAME == __FILE__ dynamodb_client = Aws::DynamoDB::Client.new manager = DynamoDBManager.new(dynamodb_client) manager.list_tables end
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如需詳API細資訊,請參閱AWS SDK for Ruby API參考ListTables中的。
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