从asp.net Web API核心返回图像作为IActionResult

本文介绍了从asp Web API核心返回图像作为IActionResult的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

使用asp Web API核心时，将图像文件作为IActionResult返回的最佳方法是什么? 我尝试返回一个base64字符串，它工作正常.但不算有效. 有没有一种方法可以将图像文件对象本身作为IActionResult返回.

What is the best way to return an image file as IActionResult while using asp web api core? I tried returning a base64 string and it works fine. But not considered as efficient. Is there a way using which we can return an image file object itself as IActionResult.

推荐答案

您可以在从Controller或ControllerBase继承的控制器中使用File()函数的各种重载.

You can use the various overloads of the File() function in controllers that inherit from Controller or ControllerBase.

例如，您可以执行以下操作:

For example, you can do:

return File("~/Images/photo.jpg", "image/jpeg");

这使用虚拟路径，其他选项包括为其提供字节数组或Stream.如果需要，您还可以提供下载文件名作为第三个参数.

This uses a virtual path, other options include giving it a byte array or a Stream. You can also give a download file name as a third argument if that is needed.