英文:
Using Web API to download a file
问题
我对Web API模板进行了轻微更改，以使下载工作端点。
[HttpGet(Name = "GetWeatherForecast")]
public FileStream Get()
{
var path = @"C:\Users\user1\download.msi";
return new FileStream(path, FileMode.Open, FileAccess.Read);
}
这是一个100MB的下载文件，当我尝试下载文件时，出现了"内存不足"的问题。
英文:
I took the Web API template and made slight change to working endpoint for the download.
[HttpGet(Name = "GetWeatherForecast")]
public FileStream Get()
{
var path = @"C:\Users\user1\download.msi";
return new FileStream(path, FileMode.Open, FileAccess.Read);
}
It's a 100mb download and I'm getting Out of memory when I trying download the file.
答案1
得分: 1
要输出一个文件，你应该使用 File 方法：
var f = new FileStream(path, FileMode.Open, FileAccess.Read);
return File(f, "application/octet-stream");
如果你返回一个 FileStream，我猜 ASP.NET 会将其视为 特殊类型，在输出之前尝试对整个对象进行序列化。
英文:
To output a file, you should use the File method:
var f = new FileStream(path, FileMode.Open, FileAccess.Read);
return File(f, "application/octet-stream");
If you return a FileStream, I guess ASP.NET will consider it as special type, attempting to serialize the entire object before outputing it.
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