Ada lebih banyak AWS SDK contoh yang tersedia di GitHub repo SDKContoh AWS Dokumen.
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Contoh kode untuk DynamoDB menggunakan AWS SDKs
Contoh kode berikut menunjukkan cara menggunakan Amazon DynamoDB dengan AWS kit pengembangan perangkat lunak (). SDK
Tindakan adalah kutipan kode dari program yang lebih besar dan harus dijalankan dalam konteks. Meskipun tindakan menunjukkan cara memanggil fungsi layanan individual, Anda dapat melihat tindakan dalam konteks pada skenario terkait dan contoh lintas layanan.
Skenario adalah contoh kode yang menunjukkan cara menyelesaikan tugas tertentu dengan memanggil beberapa fungsi dalam layanan yang sama.
Contoh lintas layanan adalah contoh aplikasi yang bekerja di beberapa AWS layanan.
Sumber daya lainnya
Panduan Pengembang DynamoDB - Informasi lebih lanjut tentang DynamoDB.
Referensi APIDynamoDB - Detail tentang semua tindakan DynamoDB yang tersedia.
AWS Pusat Pengembang - Contoh kode yang dapat Anda filter berdasarkan kategori atau pencarian teks lengkap.
AWS SDKContoh — GitHub repo dengan kode lengkap dalam bahasa pilihan. Termasuk instruksi untuk mengatur dan menjalankan kode.
Memulai
Contoh kode berikut ini menunjukkan cara untuk mulai menggunakan DynamoDB.
- .NET
-
- AWS SDK for .NET
-
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.
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();
}
}
}
- C++
-
- SDKuntuk C ++
-
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.
Kode untuk CMakeLists file.txtCMake.
# 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})
Kode untuk file sumber hello_dynamodb.cpp.
#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;
}
- Java
-
- SDKuntuk Java 2.x
-
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.
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!");
}
}
- JavaScript
-
- SDKuntuk JavaScript (v3)
-
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.
Untuk detail lebih lanjut tentang bekerja dengan DynamoDB di, lihat Pemrograman DynamoDB AWS SDK for JavaScript dengan. 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;
};
- Python
-
- SDKuntuk Python (Boto3)
-
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.
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.")
- Ruby
-
- SDKuntuk Ruby
-
Ada lebih banyak tentang GitHub. Temukan contoh lengkapnya dan pelajari cara mengatur dan menjalankannya di AWS Repositori Contoh Kode.
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