AWSs3文件上传，下载（Androiddemo），类似minio

共2000个文件

class：2151个

rawproto：53个

xml：34个

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**正文** 在本文中，我们将深入探讨如何在Android应用程序中实现AWS S3（Amazon Simple Storage Service）的文件上传和下载功能，以及如何自定义服务器配置，包括设置IP、Access Key和Secret Key。让我们理解AWS S3的基本概念。 **AWS S3简介** AWS S3是一种云存储服务，允许开发者和企业存储和检索任意数量的数据，具有高可用性、耐用性和安全性。它提供了一个简单的Web服务接口，用于存储和检索任何数量的数据，无论何时何地都可以访问。 **S3 Transfer Utility** 为了简化文件上传和下载操作，AWS SDK提供了S3TransferUtility类。这是一个高级API，能够处理多线程上传和下载，以及断点续传。在Android应用中使用这个工具，可以极大地提高用户体验，因为它会自动处理网络中断和恢复。 **Android集成AWS S3** 1. **添加依赖**: 在Android项目的build.gradle文件中，添加AWS SDK for Android的依赖项。 ```groovy dependencies { implementation 'com.amazonaws:aws-android-sdk-s3:2.17.+' } ``` 2. **初始化**: 在应用的Application类中初始化AWS SDK，配置Region和CredentialsProvider。 ```java AWS.config = new AWS.Configuration.Builder() .region(Regions.US_EAST_1) // 设置AWS区域 .credentialsProvider(new CognitoCachingCredentialsProvider( getApplicationContext(), "YOUR_COGNITO_POOL_ID", // 替换为你的Cognito身份池ID Regions.US_EAST_1)) // 匹配上面的区域 .build(); ``` 如果你不使用Cognito，可以使用BasicAWSCredentials并传递Access Key和Secret Key。 3. **上传文件**: 使用S3TransferUtility上传文件。 ```java S3TransferUtility transferUtility = S3TransferUtility.create(this, AWS.config); Upload upload = transferUtility.upload( "your-bucket-name", // 存储桶名称 "path/to/your/file", // 目标路径 new File("/path/to/local/file")); // 本地文件路径 upload.setCancellationToken cancellationToken); // 可选：取消令牌 ``` 4. **下载文件**: 下载文件的步骤类似，使用S3TransferUtility.download()方法。 ```java S3TransferUtilityDownloadTask downloadTask = transferUtility.download( "your-bucket-name", // 存储桶名称 "path/to/your/file", // 源路径 new File("/path/to/local/file")); // 本地保存路径 downloadTask.setCancellationToken(cancellationToken); // 可选：取消令牌 ``` **自定义服务器配置** 在某些情况下，你可能需要连接到自定义的S3兼容服务器，例如MinIO。这时，你需要创建一个AmazonS3ClientBuilder实例，并指定服务器的端点、Access Key和Secret Key。 ```java AmazonS3 s3Client = AmazonS3ClientBuilder.standard() .withEndpointConfiguration(new EndpointConfiguration("http://your-server-ip:9000", "us-east-1")) .withCredentials(new AWSStaticCredentialsProvider( new BasicAWSCredentials("ACCESS_KEY", "SECRET_KEY"))) .build(); ``` 之后，你可以使用这个s3Client对象进行上传和下载操作。 **安全与最佳实践** - 总是使用IAM用户或角色的最小权限访问S3。 - 对敏感数据进行加密，无论是客户端加密还是服务器端加密。 - 定期审计S3存储桶的权限和访问控制列表（ACLs）。在实际项目中，你需要根据需求对上述代码进行适当的修改和扩展，确保与你的业务逻辑和安全策略相匹配。同时，不要忘记在发布应用程序之前删除或替换示例中的敏感信息，如Access Key和Secret Key。总结，AWS S3在Android应用中的集成可以通过S3TransferUtility简化文件上传和下载，同时允许自定义服务器配置，以适应各种云存储场景。遵循最佳实践，确保应用程序的安全性与性能。

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AWS s3 文件上传，下载（Android demo），类似minio （2000个子文件）

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2y5Y36R55eEyY+D+xIAsJg26ZO4= 761B

resources-debug.ap_ 15KB

resources-debug-androidTest.ap_ 789B

S3TransferUtilitySample-debug.apk 553KB

gradlew.bat 2KB

fileSnapshots.bin 244KB

fileHashes.bin 223KB

taskArtifacts.bin 79KB

localClassSetAnalysis.bin 75KB

localJarClasspathSnapshot.bin 62KB

AmazonS3Client.class 156KB

AmazonS3Client.class 121KB

S3CryptoModuleBase.class 36KB

TransferManager.class 32KB

BucketConfigurationXmlFactory.class 30KB

EncryptionUtils.class 24KB

ContentCryptoMaterial.class 24KB

EncryptionUtils.class 24KB

AmazonHttpClient.class 23KB

AmazonCognitoSyncClient.class 21KB

XmlResponsesSaxParser.class 21KB

S3CryptoModuleAE.class 21KB

SQLiteLocalStorage.class 20KB

Gson.class 20KB

AmazonS3.class 19KB

AmazonS3EncryptionClient.class 19KB

JsonReader.class 18KB

Gson.class 18KB

JsonReader.class 18KB

DefaultDataset.class 17KB

CognitoSyncStorage.class 17KB

XmlResponsesSaxParser.class 17KB

UploadCallable.class 16KB

S3CryptoModuleAE.class 16KB

TransferDBUtil.class 16KB

S3CryptoModuleBase.class 16KB

CognitoCredentialsProvider.class 15KB

RegionDefaults.class 15KB

AWSSecurityTokenServiceClient.class 14KB

UploadTask.class 14KB

S3CryptoModuleEO.class 14KB

CognitoCredentialsProvider.class 14KB

AmazonWebServiceClient.class 14KB

BucketConfigurationXmlFactory.class 14KB

AmazonWebServiceClient.class 14KB

UploadTask.class 13KB

AmazonCognitoIdentityClient.class 13KB

AWS4Signer.class 13KB

TransferUtility.class 13KB

UploadActivity.class 13KB

AmazonS3.class 13KB

CognitoCachingCredentialsProvider.class 13KB

TransferService.class 12KB

CognitoCachingCredentialsProvider.class 12KB

CopyCallable.class 12KB

Mimetypes.class 12KB

TransferService.class 12KB

CopyCallable.class 12KB

UploadMonitor.class 12KB

AbstractPutObjectRequest.class 12KB

TransferUtility.class 12KB

Mimetypes.class 12KB

AwsSdkMetrics.class 12KB

CognitoSyncManager.class 12KB

AbstractAWSSigner.class 11KB

ContentCryptoMaterial.class 11KB

AmazonS3EncryptionClient.class 11KB

RegionDefaults.class 11KB

AbstractAWSSigner.class 11KB

ServiceUtils.class 11KB

LinkedTreeMap.class 11KB

UploadObjectObserver.class 10KB

ObjectMetadata.class 10KB

ServiceUtils.class 10KB

CopyObjectRequest.class 10KB

LinkedTreeMap.class 10KB

$Gson$Types.class 10KB

JsonPolicyWriter.class 10KB

CopyMonitor.class 10KB

ClientConfiguration.class 9KB

TypeAdapters.class 9KB

TransferRecord.class 9KB

BucketLifecycleConfiguration$Rule.class 9KB

DownloadActivity.class 9KB

TransferRecord.class 9KB

GetObjectRequest.class 9KB

GsonBuilder.class 9KB

共 2000 条

Running S3TransferUtility Sample ============================================= This sample demonstrates how to use the high-level class TransferUtility to perform download and upload tasks and manage the tasks. You can also follow the tutorial for a step-by-step guide in understanding the S3TransferUtilitySample. 1. Create a identity pool * Go to https://console.aws.amazon.com/cognito/ and create a new identity pool. Make sure to enable access to unauthenticated identities and use the default roles. * Download the starter code at the last step of the wizard. * The starter code, has your Identity Pool ID. Keep this, you will need to add it to the sample later. 2. Set up permissions * Go to https://console.aws.amazon.com/iam/home and select "Roles". * Select the unauthenticated role you just created in step 1. * Select "Attach Policy", then find "AmazonS3FullAccess" and attach it it to the role. * Note: This will grant users in the identity pool full access to all buckets and operations in S3. In a real app, you should restrict users to only have access to the resources they need. 3. Create a bucket * Go to https://console.aws.amazon.com/s3/home * Create a bucket with a name you want. 4. Import the sample project * Import the sample as Android project into your IDE of choice. * Open com.amazonaws.demo.s3transferutility.Constants.java. * Update "COGNITO_POOL_ID" with the value you got from step 1. * Update "COGNITO_POOL_REGION" with the region of your cognito identity pool from step 1. For example, `us-east-1`. * Update "BUCKET_NAME" with the value in step 3. * Update "BUCKET_REGION" with the region of your s3 bucket from step 3. For example, `us-east-1`. 5. Import the AWS SDK for Android * You can download the newest AWS Android SDK from http://aws.amazon.com/mobile/sdk/ and copy the jars into libs directory. Include the following jars + aws-android-sdk-core-X.X.X.jar + extras/aws-android-sdk-cognito-X.X.X.jar + aws-android-sdk-s3-X.X.X.jar 6. Run the sample 上传下载代码示例（上传两种方式，下载两种方式） ============================================ 一、Uploading To upload an object to Amazon S3, use the AmazonS3EncryptionClient you initialized, and then use either PutObjectRequest or TransferUtility. 1.Using PutObjectRequest Java: final PutObjectRequest putObjectRequest = new PutObjectRequest(<bucketName>, <key>, <file>); final PutObjectResult putObjectResult = s3Client.PutObject(putObjectRequest); 2.Using TransferUtility Java: final TransferUtility transferUtility = new TransferUtility(s3Client, <context>); final TransferObserver transferObserver = transferUtility .upload(<bucketName>, <key>, <file>); 二、Downloading To download an object from Amazon S3, use the AmazonS3EncryptionClient you initialized earlier, and then use either GetObjectRequest or TransferUtility. 1.Using GetObjectRequest Java: final InputStream inputStream = s3Client.getObject(<bucketName>, <key>).getObjectContent(); 2.Using TransferUtility: Java: final File tempDownloadFile = temp.newFile(); final TransferObserver observer = transferUtility .download(<bucketName>, <key>, <tempDownloadFile>);

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