Android 亚马逊S3上传详细记录-终极大法

看了很多篇亚马逊s3上传文件的文章，发现大多写的都不是很详细，不能正常运行的，很苦恼；于是就有了这次记录，让你不走弯路。

1.首先需要让运维申请账号和秘钥 创建bucket，你所有的上传的文件都在bucket这个文件下

2.初始化上传凭证

AWSCredentials awsCreds = new BasicAWSCredentials(accessKey, secretKey);
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3.初始化S3 Client

setAccelerateModeEnabled 这个参数是设置bucket是否加速，如果运维没有开启加速一定要设置false，不然会报错

   S3ClientOptions clientOptions = S3ClientOptions.builder().setAccelerateModeEnabled(false).build();
     AmazonS3Client   uploadClient = new AmazonS3Client(awsCreds);
        uploadClient.setS3ClientOptions(clientOptions);
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4.获取上传管理类TransferUtility

transferUtility = TransferUtility.builder().s3Client(uploadClient).context(context).build();
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5.上传文件file

关于：transferUtility.upload(bucketName, getFileKey(), uploadFiles)
bucketName：bucket运维在s3后台创建的提供
getFileKey()：在s3后台的文件名称，比如 log/202001/test.zip
uploadFiles：上传的文件

public TransferObserver upload(String bucket, String key, File file)

上传
 TransferObserver transferObserver = transferUtility.upload(bucketName, getFileKey(), uploadFiles);
        transferObserver.setTransferListener(new TransferListener() {
            @Override
            public void onStateChanged(int id, TransferState state) {
                if (uploadMonitor != null) {
                    if (state == TransferState.COMPLETED) {
                        uploadMonitor.onSuccess("file path == " + getSignUrl() + " ");
                    } else if (state == TransferState.FAILED) {
                        uploadMonitor.onFail("");
                    } else if (state == TransferState.CANCELED) {
                        uploadMonitor.onFail("取消了");
                    }
                }
                uploadId = -1;
            }

            @Override
            public void onProgressChanged(int id, long bytesCurrent, long bytesTotal) {
                DTLog.d("UploadManager", "bytesCurrent" + bytesCurrent + " bytesTotal " + bytesTotal);
            }

            @Override
            public void onError(int id, Exception ex) {
                uploadMonitor.onFail("exception " + ex.toString());
                uploadId = -1;
            }
        });
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6.获取上传后的临时下载地址

具体公开的下载地址 还需要运维进行映射后提供

  GeneratePresignedUrlRequest urlRequest = new GeneratePresignedUrlRequest(
                bucketName, uploadKey);
        URL url = uploadClient.generatePresignedUrl(urlRequest);
        return url.toString();
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7.上传gradle的配置

  api 'com.amazonaws:aws-android-sdk-core:2.6.19'
    api 'com.amazonaws:aws-android-sdk-s3:2.6.19'
    api 'com.amazonaws:aws-android-sdk-ddb:2.6.19'
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