private void ConvertImage(ReplyMailInput input)
{
//如果是图片的话,必须使用CID
if (string.IsNullOrEmpty(input.Content))
{
input.Content = "";
}
if (input.Attachments == null)
{
input.Attachments = new List <AttachmentInput>();
}
Regex regImg = new Regex(@"<img\b[^<>]*?\bsrc[\s\t\r\n]*=[\s\t\r\n]*[""']?[\s\t\r\n]*(?<imgUrl>[^\s\t\r\n""'<>]*)[^<>]*?/?[\s\t\r\n]*>", RegexOptions.IgnoreCase);
var matches = regImg.Matches(input.Content);
if (matches.Count == 0)
{
return;
}
foreach (Match match in matches)
{
var imgSrc = match.Groups[1].Value;
var imgBase64 = imgSrc.Split(',')[1];
var imgBytes = Convert.FromBase64String(imgBase64);
var attachmentId = Guid.NewGuid().ToString("N").ToLower() + ".jpg";
input.Content = input.Content.Replace(imgSrc, "cid:" + attachmentId);
input.Attachments.Add(new AttachmentInput()
{
Id = attachmentId,
Name = attachmentId,
Bytes = imgBytes
});
}
}
[RequestSizeLimit(100_000_000)] //最大100m左右
public async Task <IActionResult> Reply([FromForm] ReplyMailInput input)
{
var userName = this.GetUserName();
this.ConvertImage(input);
if (input.Attachment != null)
{
foreach (var it in input.Attachment)
{
var stream = it.OpenReadStream();
var bytes = new byte[it.Length];
await stream.ReadAsync(bytes, 0, bytes.Length);
var name = Guid.NewGuid().ToString("N").ToLower() + "-" + it.FileName;
input.Attachments.Add(new AttachmentInput()
{
Bytes = bytes,
Name = name,
Id = name,
IsPackage = true,
});
}
}
if (input.CopyTo == null)
{
input.CopyTo = new string[0];
}
if (input.Attachments == null)
{
input.Attachments = new List <AttachmentInput>();
}
if (!string.IsNullOrEmpty(input.MailId))
{
await this._mailService.ReplyAsync(userName, input.MailId, input.Content, input.CopyTo, input.Attachments);
return(Json(new { success = true }));
}
else
{
await this._mailService.Send(userName, input.Title, input.Content, input.Reciver, input.CopyTo, input.Attachments);
return(Json(new { success = true }));
}
}