在ASP.Net Core中,当使用FileStreamResult返回文件时,有几种可能导致返回500 INTERNAL SERVER ERROR的问题。以下是一些解决方法的示例代码:
public IActionResult DownloadFile()
{
string filePath = "path/to/file.pdf";
if (!System.IO.File.Exists(filePath))
{
return NotFound(); // 返回404 Not Found
}
var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
return new FileStreamResult(fileStream, "application/pdf");
}
public IActionResult DownloadFile()
{
string filePath = "path/to/file.pdf";
try
{
var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read);
return new FileStreamResult(fileStream, "application/pdf");
}
catch (Exception ex)
{
// 记录日志或返回适当的错误信息
return StatusCode(500, "Internal Server Error");
}
}
public IActionResult DownloadFile()
{
string filePath = "path/to/file.pdf";
try
{
using (var fileStream = new FileStream(filePath, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
return new FileStreamResult(fileStream, "application/pdf");
}
}
catch (Exception ex)
{
// 记录日志或返回适当的错误信息
return StatusCode(500, "Internal Server Error");
}
}
请根据实际情况选择适合的解决方法,或根据错误信息进行调试。