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 Amazon S3 的代碼示例 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 S3 (SDK)。
基本概念是程式碼範例，會示範如何在服務中執行基本作業。
Actions 是大型程式的程式碼摘錄，必須在內容中執行。雖然動作會顯示如何呼叫個別服務函數，但您可以在其相關案例中查看內容中的動作。
案例是程式碼範例，向您展示如何透過呼叫服務中的多個函數或與其他函式結合來完成特定工作 AWS 服務。
如需 AWS SDK開發人員指南和程式碼範例的完整清單，請參閱搭配 AWS SDK 使用此服務。本主題也包含有關入門的資訊以及舊SDK版的詳細資訊。
開始使用
下列程式碼範例示範如何開始使用 Amazon S3。
- C++
-
- SDK對於 C ++
-
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 s3)
# Set this project's name.
project("hello_s3")
# 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(${PROJECT_NAME}
hello_s3.cpp)
target_link_libraries(${PROJECT_NAME}
${AWSSDK_LINK_LIBRARIES})
hello_s3.cpp 來源檔案的程式碼。
#include <aws/core/Aws.h>
#include <aws/s3/S3Client.h>
#include <iostream>
#include <aws/core/auth/AWSCredentialsProviderChain.h>
using namespace Aws;
using namespace Aws::Auth;
/*
* A "Hello S3" starter application which initializes an Amazon Simple Storage Service (Amazon S3) client
* and lists the Amazon S3 buckets in the selected region.
*
* main function
*
* Usage: 'hello_s3'
*
*/
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";
// You don't normally have to test that you are authenticated. But the S3 service permits anonymous requests, thus the s3Client will return "success" and 0 buckets even if you are unauthenticated, which can be confusing to a new user.
auto provider = Aws::MakeShared<DefaultAWSCredentialsProviderChain>("alloc-tag");
auto creds = provider->GetAWSCredentials();
if (creds.IsEmpty()) {
std::cerr << "Failed authentication" << std::endl;
}
Aws::S3::S3Client s3Client(clientConfig);
auto outcome = s3Client.ListBuckets();
if (!outcome.IsSuccess()) {
std::cerr << "Failed with error: " << outcome.GetError() << std::endl;
result = 1;
} else {
std::cout << "Found " << outcome.GetResult().GetBuckets().size()
<< " buckets\n";
for (auto &bucket: outcome.GetResult().GetBuckets()) {
std::cout << bucket.GetName() << std::endl;
}
}
}
Aws::ShutdownAPI(options); // Should only be called once.
return result;
}
- Go
-
- SDK對於轉到 V2
-
package main
import (
"context"
"fmt"
"github.com/aws/aws-sdk-go-v2/config"
"github.com/aws/aws-sdk-go-v2/service/s3"
)
// main uses the AWS SDK for Go V2 to create an Amazon Simple Storage Service
// (Amazon S3) client and list up to 10 buckets in your account.
// This example uses the default settings specified in your shared credentials
// and config files.
func main() {
sdkConfig, err := config.LoadDefaultConfig(context.TODO())
if err != nil {
fmt.Println("Couldn't load default configuration. Have you set up your AWS account?")
fmt.Println(err)
return
}
s3Client := s3.NewFromConfig(sdkConfig)
count := 10
fmt.Printf("Let's list up to %v buckets for your account.\n", count)
result, err := s3Client.ListBuckets(context.TODO(), &s3.ListBucketsInput{})
if err != nil {
fmt.Printf("Couldn't list buckets for your account. Here's why: %v\n", err)
return
}
if len(result.Buckets) == 0 {
fmt.Println("You don't have any buckets!")
} else {
if count > len(result.Buckets) {
count = len(result.Buckets)
}
for _, bucket := range result.Buckets[:count] {
fmt.Printf("\t%v\n", *bucket.Name)
}
}
}
- Java
-
- SDK對於爪哇 2.x
-
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.Bucket;
import software.amazon.awssdk.services.s3.model.ListBucketsResponse;
import software.amazon.awssdk.services.s3.model.S3Exception;
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 HelloS3 {
public static void main(String[] args) {
Region region = Region.US_EAST_1;
S3Client s3 = S3Client.builder()
.region(region)
.build();
listBuckets(s3);
}
public static void listBuckets(S3Client s3) {
try {
ListBucketsResponse response = s3.listBuckets();
List<Bucket> bucketList = response.buckets();
bucketList.forEach(bucket -> {
System.out.println("Bucket Name: " + bucket.name());
});
} catch (S3Exception e) {
System.err.println(e.awsErrorDetails().errorMessage());
System.exit(1);
}
}
}
- JavaScript
-
- SDK對於 JavaScript （3）
-
import { ListBucketsCommand, S3Client } from "@aws-sdk/client-s3";
// When no region or credentials are provided, the SDK will use the
// region and credentials from the local AWS config.
const client = new S3Client({});
export const helloS3 = async () => {
const command = new ListBucketsCommand({});
const { Buckets } = await client.send(command);
console.log("Buckets: ");
console.log(Buckets.map((bucket) => bucket.Name).join("\n"));
return Buckets;
};
- PHP
-
- 適用於 PHP 的 SDK
-
use Aws\S3\S3Client;
$client = new S3Client(['region' => 'us-west-2']);
$results = $client->listBuckets();
var_dump($results);
- Python
-
- SDK對於 Python（肉毒桿菌 3）
-
import boto3
def hello_s3():
"""
Use the AWS SDK for Python (Boto3) to create an Amazon Simple Storage Service
(Amazon S3) resource and list the buckets in your account.
This example uses the default settings specified in your shared credentials
and config files.
"""
s3_resource = boto3.resource("s3")
print("Hello, Amazon S3! Let's list your buckets:")
for bucket in s3_resource.buckets.all():
print(f"\t{bucket.name}")
if __name__ == "__main__":
hello_s3()
- Ruby
-
- SDK對於紅寶石
-
# frozen_string_literal: true
# S3Manager is a class responsible for managing S3 operations
# such as listing all S3 buckets in the current AWS account.
class S3Manager
def initialize(client)
@client = client
@logger = Logger.new($stdout)
end
# Lists and prints all S3 buckets in the current AWS account.
def list_buckets
@logger.info('Here are the buckets in your account:')
response = @client.list_buckets
if response.buckets.empty?
@logger.info("You don't have any S3 buckets yet.")
else
response.buckets.each do |bucket|
@logger.info("- #{bucket.name}")
end
end
rescue Aws::Errors::ServiceError => e
@logger.error("Encountered an error while listing buckets: #{e.message}")
end
end
if $PROGRAM_NAME == __FILE__
s3_client = Aws::S3::Client.new
manager = S3Manager.new(s3_client)
manager.list_buckets
end
