Question

我已经实现了一个.ashx处理程序，它从客户端接收文件的分块上传部分。以前我首先将文件存储在临时文件夹中，然后再将它们上传到AWS。由于文件变得非常大，我想跳过临时文件夹部分并使用MultiPart请求将它们直接上传到AWS。

到目前为止它看起来很好，但我找不到接受HttpPostedFile或Stream上传的重载..

我可能会遇到以下情况？

        // Create request to upload a part.
        UploadPartRequest uploadRequest = new UploadPartRequest()
            .WithBucketName(myBucket)
            .WithKey(myKey)
            .WithUploadId(myUploadId)                
            .WithPartNumber(partNumber)
            .WithInputStream(inputStream);

Answer 1

UploadPartRequest uploadRequest = new UploadPartRequest()
        .WithBucketName(myBucket)
        .WithKey(myKey)
        .WithUploadId(myUploadId)                
        .WithPartNumber(partNumber)
        .WithInputStream(stream) as UploadPartRequest;

这也是可能的。

Answer 2

WithInputStream将返回s3请求而不是UploadPartRequest 所以只需将返回类型转换为UploadPartRequest

// Create request to upload a part.
        UploadPartRequest uploadRequest = new UploadPartRequest()
            .WithBucketName(myBucket)
            .WithKey(myKey)
            .WithUploadId(myUploadId)                
            .WithPartNumber(partNumber);

uploadRequest = (UploadPartRequest)uploadRequest.WithInputStream(ftiObject.sourceStream);

这对我有用

Answer 3

简单：只需通过属性设置输入流：

            // Create request to upload a part.
            UploadPartRequest uploadRequest = new UploadPartRequest()
                .WithBucketName(myBucket)
                .WithKey(myKey)
                .WithUploadId(UploadId)
                .WithPartNumber(PartNumber)
                .WithPartSize(inputStream.Length)
                .WithFilePosition(FilePosition);

            uploadRequest.InputStream = inputStream;

来自Http的AWS .NET SDK多部分文件上传

3 个答案: