.NET WebApi返回图片

参考

asp.net web api返回图片至前端 - GUOKUN - 博客园 (cnblogs.com)

vue获取图片流数据并展示_vue展示图片流-CSDN博客

后端返回

核心代码

        [HttpGet]
        public async Task<IActionResult> GetPic()
        {
            MemoryStream stream;
            using (FileStream fileStream = new FileStream("Image/2.png", FileMode.Open))
            {
                int len = (int)fileStream.Length;
                byte[] buf = new byte[len];
                fileStream.Read(buf, 0, len);
                stream = new MemoryStream();
                stream.Write(buf, 0, len);
            }
            return await Task.FromResult<FileResult>(File(stream.ToArray(), "image/jpeg"));
        }

测试

前端展示