1,2,3 只是示例数据。它试图解决的是您创建一个任何您想要的内存流，然后在 PutAttachment 方法中使用该内存流。以下是临时的，未经测试，但应该可以工作：
using (var mem = new MemoryStream(file.InputStream)
{
_documentStore.DatabaseCommands.PutAttachment("upload/" + YourUID, null, mem,
new RavenJObject
{
{ "OtherData", "Can Go here" },
{ "MoreData", "Here" }
});
}
编辑其余问题
- 附件是如何存储的？我相信这是一个 json 文档，其中一个属性保存附件的字节数组
- “文档”是独立存储的吗？是的。附件是一个特殊的文档，它没有被索引，但它是数据库的一部分，因此复制之类的任务可以工作。
- “我应该”将附件的密钥存储在与之关联的主文档中吗？是的，您会引用密钥，并且任何时候您想获得它，您只需向 Raven 索要具有该 ID 的附件。
- pdf 是否物理存储在 ravendb 中？是的。
- 你能看见它吗？不，它甚至出现在工作室里（至少据我所知）
编辑更正和更新的示例
[AcceptVerbs(HttpVerbs.Post)]
public ActionResult Upload(HttpPostedFileBase file)
{
byte[] bytes = ReadToEnd(file.InputStream);
var id = "upload/" + DateTime.Now.Second.ToString(CultureInfo.InvariantCulture);
using (var mem = new MemoryStream(bytes))
{
DocumentStore.DatabaseCommands.PutAttachment(id, null, mem,
new RavenJObject
{
{"OtherData", "Can Go here"},
{"MoreData", "Here"},
{"ContentType", file.ContentType}
});
}
return Content(id);
}
public FileContentResult GetFile(string id)
{
var attachment = DocumentStore.DatabaseCommands.GetAttachment("upload/" + id);
return new FileContentResult(ReadFully(attachment.Data()), attachment.Metadata["ContentType"].ToString());
}
public static byte[] ReadToEnd(Stream stream)
{
long originalPosition = 0;
if (stream.CanSeek)
{
originalPosition = stream.Position;
stream.Position = 0;
}
try
{
var readBuffer = new byte[4096];
int totalBytesRead = 0;
int bytesRead;
while ((bytesRead = stream.Read(readBuffer, totalBytesRead, readBuffer.Length - totalBytesRead)) > 0)
{
totalBytesRead += bytesRead;
if (totalBytesRead == readBuffer.Length)
{
int nextByte = stream.ReadByte();
if (nextByte != -1)
{
var temp = new byte[readBuffer.Length*2];
Buffer.BlockCopy(readBuffer, 0, temp, 0, readBuffer.Length);
Buffer.SetByte(temp, totalBytesRead, (byte) nextByte);
readBuffer = temp;
totalBytesRead++;
}
}
}
byte[] buffer = readBuffer;
if (readBuffer.Length != totalBytesRead)
{
buffer = new byte[totalBytesRead];
Buffer.BlockCopy(readBuffer, 0, buffer, 0, totalBytesRead);
}
return buffer;
}
finally
{
if (stream.CanSeek)
{
stream.Position = originalPosition;
}
}
}
public static byte[] ReadFully(Stream input)
{
byte[] buffer = new byte[16 * 1024];
using (MemoryStream ms = new MemoryStream())
{
int read;
while ((read = input.Read(buffer, 0, buffer.Length)) > 0)
{
ms.Write(buffer, 0, read);
}
return ms.ToArray();
}
}