public async Task <ActionResult> PlayWav(string id, string spText)
{
string strPath = Server.MapPath("~\\MP4\\" + id + ".wav");
SpeechService.SaveMp3(strPath, spText);
try
{
//FTP 直接返回Stream，需要自己实现
using (FileStream fileStream = new FileStream(strPath, FileMode.Open))
{
byte[] fileByte = new byte[fileStream.Length];
fileStream.Seek(0, SeekOrigin.Begin);
fileStream.Read(fileByte, 0, (int)fileStream.Length);
long fSize = fileStream.Length;
long startbyte = 0;
long endbyte = fSize - 1;
int statusCode = 200;
if ((Request.Headers["Range"] != null))
{
//Get the actual byte range from the range header string, and set the starting byte.
string[] range = Request.Headers["Range"].Split(new char[] { '=', '-' });
startbyte = Convert.ToInt64(range[1]);
if (range.Length > 2 && range[2] != "")
{
endbyte = Convert.ToInt64(range[2]);
}
//If the start byte is not equal to zero, that means the user is requesting partial content.
if (startbyte != 0 || endbyte != fSize - 1 || range.Length > 2 && range[2] == "")
{
statusCode = 206;
} //Set the status code of the response to 206 (Partial Content) and add a content range header.
}
long desSize = endbyte - startbyte + 1;
//Headers
Response.StatusCode = statusCode;
Response.ContentType = "audio/mpeg";
Response.AddHeader("Content-Accept", Response.ContentType);
Response.AddHeader("Content-Length", desSize.ToString());
Response.AddHeader("Content-Range", string.Format("bytes {0}-{1}/{2}", startbyte, endbyte, fSize));
return(File(fileByte, Response.ContentType));
//return new FileStreamResult(fileByte, Response.ContentType); 这个方法不行
}
}
catch (Exception ex)
{
throw;
}
}