public ActionResult Get(string filename)
{
FileEntity fileEntity = GetFileInfo(filename);
string fileFullPath = System.IO.Path.Combine(@"C:\", fileEntity.file_path, filename);
if (fileEntity == null)
return NotFound();
FileStream fileStream = System.IO.File.Open(fileFullPath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite);
long startByteIndex = 0;
long endByteIndex = fileEntity.file_length-1;
var reqTypedHeader = Request.GetTypedHeaders();
if (reqTypedHeader.Range!=null && reqTypedHeader.Range.Ranges.Count>0)
{
//断点续传处理，多range情景没有处理
startByteIndex = reqTypedHeader.Range.Ranges.First().From ?? 0;
endByteIndex = reqTypedHeader.Range.Ranges.First().To ?? fileEntity.file_length - 1;
Response.StatusCode = StatusCodes.Status206PartialContent;
var contentRange = new ContentRangeHeaderValue(startByteIndex, endByteIndex);
Response.Headers[HeaderNames.ContentRange] = contentRange.ToString();
}
Response.ContentType = fileEntity.file_mimetype;
var contentDisposition = new ContentDispositionHeaderValue("attachment");
contentDisposition.SetHttpFileName(fileEntity.file_name);
Response.Headers[HeaderNames.ContentDisposition] = contentDisposition.ToString();
Response.ContentLength = fileStream.Length;
Response.Headers[HeaderNames.AcceptRanges] = "bytes";
return new FileStreamResult(fileStream,fileEntity.file_mimetype);
}
public void ToString_UseDifferentRanges_AllSerializedCorrectly()
{
var range = new ContentRangeHeaderValue(1, 2, 3);
range.Unit = "myunit";
Assert.Equal("myunit 1-2/3", range.ToString());
range = new ContentRangeHeaderValue(123456789012345678, 123456789012345679);
Assert.Equal("bytes 123456789012345678-123456789012345679/*", range.ToString());
range = new ContentRangeHeaderValue(150);
Assert.Equal("bytes */150", range.ToString());
}
public void ToString_UseDifferentRanges_AllSerializedCorrectly()
{
var range = new ContentRangeHeaderValue(1, 2, 3);
range.Unit = "myunit";
Assert.Equal("myunit 1-2/3", range.ToString());
range = new ContentRangeHeaderValue(123456789012345678, 123456789012345679);
Assert.Equal("bytes 123456789012345678-123456789012345679/*", range.ToString());
range = new ContentRangeHeaderValue(150);
Assert.Equal("bytes */150", range.ToString());
}
