// 初始化 TransferConfig，这里使用默认配置，如果需要定制，请参考 SDK 接口文档
// 默认对大于或等于2M的文件自动进行分块上传，分块大小为1M，可以通过如下代码修改分块阈值
TransferConfig transferConfig = new TransferConfig.Builder()
        // 设置启用分块上传的最小对象大小 默认为2M
        .setDivisionForUpload(2097152)
        // 设置分块上传时的分块大小 默认为1M
        .setSliceSizeForUpload(1048576)
        // 设置是否强制使用简单上传, 禁止分块上传
        .setForceSimpleUpload(false)
        .build();
// 初始化 TransferManager
TransferManager transferManager = new TransferManager(cosXmlService,
        transferConfig);

PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, cosPath, srcPath);
// 设置使用 COS 托管加密密钥的服务端加密（SSE-COS）保护数据
putObjectRequest.setCOSServerSideEncryption();

// 上传文件
COSXMLUploadTask cosxmlUploadTask = transferManager.upload(putObjectRequest, uploadId);

// 服务端加密密钥
String customKey = "用户主密钥 CMK";
String encryptContext = "加密上下文";
PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, cosPath, srcPath);

// 设置使用客户提供的用户主密钥的服务端加密 （SSE-KMS）保护数据
try {
    putObjectRequest.setCOSServerSideEncryptionWithKMS(customKey, encryptContext);
} catch (CosXmlClientException e) {
    e.printStackTrace();
}
// 上传文件
COSXMLUploadTask cosxmlUploadTask = transferManager.upload(putObjectRequest, uploadId);

// 服务端加密密钥
String customKey = "服务端加密密钥";
PutObjectRequest putObjectRequest = new PutObjectRequest(bucket, cosPath, srcPath);
// 设置使用客户提供的加密密钥的服务端加密 （SSE-C）保护数据
try {
    putObjectRequest.setCOSServerSideEncryptionWithCustomerKey(customKey);
} catch (CosXmlClientException e) {
    e.printStackTrace();
}

// 上传文件
COSXMLUploadTask cosxmlUploadTask = transferManager.upload(putObjectRequest, uploadId);