簡單記錄一下在Springboot中上傳文件到AWS S3存儲服務的代碼。

在 application.xml中添加aws相關配置：

custom: aws: access-key: CHOBITACCESSKEY secret-key: CHOBIT/THISIS006SECRET007Key/dotORG bucket: zhyea endpoint: www.zhyea.com:80

新建一個 AwsS3Componment類來執行上傳文件操作：

@Componentpublic class AwsS3Component implements InitializingBean { @Value('${custom.aws.access-key}') private String accessKey; @Value('${custom.aws.secret-key}') private String accessSecret; @Value('${custom.aws.bucket}') private String bucket; @Value('${custom.aws.endpoint}') private String endpoint; private AmazonS3 client; @Override public void afterPropertiesSet() {ClientConfiguration config = new ClientConfiguration();config.setProtocol(Protocol.HTTP);config.disableSocketProxy(); this.client = AmazonS3ClientBuilder.standard().withClientConfiguration(config).withCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials(accessKey, accessSecret))).withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration(endpoint, Regions.CN_NORTH_1.getName())).enablePathStyleAccess().build(); }}

因為使用的服務有設置endpoint，所以這里需要使用下面這一行完成endpoint的設置：

withEndpointConfiguration(new AwsClientBuilder.EndpointConfiguration(endpoint, Regions.CN_NORTH_1.getName()))

如果不設置endpoint就會收到下面這樣的報錯：

com.amazonaws.services.s3.model.AmazonS3Exception: The AWS Access Key Id you provided does not exist in our records. (Service: Amazon S3; Status Code: 403; Error Code: InvalidAccessKeyId; Request ID: FRDT8N0RAQFNCVDP; S3 Extended Request ID: DemEatwroXry2YN/5lyuMKDmhIi/aIz3QZPmLN0DYHeHU3oGUeOClJBcToz1J1qkcBZBfklRNs8=)at com.amazonaws.http.AmazonHttpClient$RequestExecutor.handleErrorResponse(AmazonHttpClient.java:1660)at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeOneRequest(AmazonHttpClient.java:1324)at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeHelper(AmazonHttpClient.java:1074)at com.amazonaws.http.AmazonHttpClient$RequestExecutor.doExecute(AmazonHttpClient.java:745)at com.amazonaws.http.AmazonHttpClient$RequestExecutor.executeWithTimer(AmazonHttpClient.java:719)at com.amazonaws.http.AmazonHttpClient$RequestExecutor.execute(AmazonHttpClient.java:701)

異常信息中提示了AccessKey無效——雖然我的AccessKey是有效的。

在endpoint的這行配置中還設置了region信息。如果不需要設置endpoint，就得補上region的配置：

this.client = AmazonS3ClientBuilder.standard().withClientConfiguration(config).withCredentials(new AWSStaticCredentialsProvider(new BasicAWSCredentials(accessKey, accessSecret))).withRegion(Regions.CN_NORTH_1) //Region配置.enablePathStyleAccess().build();

下面是執行上傳的代碼：

/** * 執行文件上傳 * * @param file 要上傳的文件的路徑 * @param key 存儲文件的路徑 * @return 文件路徑 */private String upload(File file, String key) { client.putObject(new PutObjectRequest(bucket, key, file).withCannedAcl(CannedAccessControlList.PublicRead)); GeneratePresignedUrlRequest urlRequest = new GeneratePresignedUrlRequest(bucket, key); URL url = client.generatePresignedUrl(urlRequest); return url.toString();}

這里是通過 File實例執行的上傳。有時候會需要直接通過文件流執行上傳，此時可以使用下面的代碼：

private String upload(InputStream input, String key) throws IOException { Date expireDate = new Date(System.currentTimeMillis() + TimeUnit.DAYS.toMillis(30)); ObjectMetadata metadata = new ObjectMetadata(); metadata.setHttpExpiresDate(expireDate); metadata.setContentLength(input.available()); client.putObject(new PutObjectRequest(bucket, key, input, metadata).withCannedAcl(CannedAccessControlList.PublicRead)); GeneratePresignedUrlRequest urlRequest = new GeneratePresignedUrlRequest(bucket, key); URL url = client.generatePresignedUrl(urlRequest); return url.toString();}

注意這里的 setContentLength()最好配置一下。不設置會在處理的時候給出WARN。根據方法文檔也可以看到，如果不設置，在上傳的時候就會先在內存中緩存整個信息流來計算文件長度。

大體上就是這樣了。

End！

以上就是SpringBoot實現上傳文件到AWS S3的代碼的詳細內容，更多關于SpringBoot 上傳文件的資料請關注好吧啦網其它相關文章！