1、安装Nuget依赖包:Microsoft.AspNetCore.StaticFiles
2、在Program.cs中注册中间件
app.UseStaticFiles();
3、将业务接口和实现类在Program.cs中注入到运行时
builder.Services.AddScoped<IModelServive,ModelServiveImpl>();
4、新建IModelServive接口,用于获取文件类型
using Microsoft.AspNetCore.Mvc;namespace digitization_model.Service;public interface IModelServive
{String getFileType(String fileName);
}
5、定义接口实现类
using System.Net;
using Microsoft.AspNetCore.Http.HttpResults;
using Microsoft.AspNetCore.Mvc;namespace digitization_model.Service.Impl;public class ModelServiveImpl : IModelServive
{public String getFileType(String fileName){String extension = Path.GetExtension(fileName).ToLowerInvariant();switch (extension){case ".txt": return "text/plain";case ".html": return "text/html";case ".pdf": return "application/pdf";case ".doc": case ".docx": return "application/msword";case ".xls": case ".xlsx": return "application/vnd.ms-excel";// 添加更多类型...default: return "application/octet-stream";}}
}
6、定义控制器
using System.Runtime.InteropServices.JavaScript;
using digitization_model.Service;
using Microsoft.AspNetCore.Mvc;namespace digitization_model.Controller;[ApiController]
[Route("[controller]")]
public class ModelController : ControllerBase
{private readonly IModelServive modelServive;private readonly IWebHostEnvironment _env;public ModelController(IModelServive modelServive,IWebHostEnvironment _env){this.modelServive = modelServive;this._env = _env;}[HttpGet("getFileUrl/modelFilePath/{modelFilePath}/fileName/{fileName}")]public IActionResult getFileUrl(String modelFilePath,String fileName){try{string filePath = Path.Combine(_env.WebRootPath+"/"+modelFilePath, fileName);if (!System.IO.File.Exists(filePath)){return NotFound(); // 如果文件不存在,返回404}// 获取文件类型并设置Content-Typestring contentType = modelServive.getFileType(fileName);// 读取文件内容并作为附件发送,以便浏览器决定如何处理(预览或下载)var fileStream = new FileStream(filePath, FileMode.Open);return File(fileStream, contentType, fileName);}catch (Exception ex){// 记录异常或处理错误return StatusCode(StatusCodes.Status500InternalServerError, ex.Message);}}}