uni-app前端Api uni.uploadFile 通过asp.net web api把图片或文件上传到IIS服务器

前端使用 uni-app 的API uni.uploadFile 通过asp.net web api 后端上传图片 存在一个跨域问题

问题相关代码，请勿粘贴截图

这里是前端代码

uni.uploadFile({
          url:"http://127.0.0.1:80/API/Shifu/UpImgs",
        filePath:"C:\a.webp",
        name:"image",
        formData:{
                'name':'Imgs'
                },
                header:{
                    'Content-Type':':multipart/form-data'
                },
                success:res=>{
                        console.log(res);
                },
                fail:err=> {
                    console.log(err);
                }
});

namespace dieshiqiaoAPI.Controllers
{
    [ApiController]
    [Route("API/[controller]/[Action]")]
    public class ShifuController : ControllerBase
    {
        #region 前端上传数据到这里接口
        [HttpPost]
        public int UpImgs([FromForm] IFormCollection formCollection)
        {
            return 555；
//这里asp.net web api 并未做 只是直接做了返回
        }
    }
}

运行结果及报错内容

执行过后调试器Console出现三条错误信息 在下方1. 2. 3.

//1.Access to XMLHttpRequest at 'http://127.0.0.1/API/Shifu/UpImgs' from origin 'http://localhost:8080' has been blocked by CORS policy: Response to preflight request doesn't pass access control check: It does not have HTTP ok status.

//2.{errMsg: 'uploadFile:fail'}

//3. POST http://127.0.0.1/API/Shifu/UpImgs net::ERR_FAILED

我的解答思路和尝试过的方法

在网络上搜索很多答案是说是跨域问题 所以我设置了 asp.net web api 打包好的一个文件配置 这个文件是配置IIS跨域的 但是问题依旧 下方是配置文件

```xml
<?xml version="1.0" encoding="utf-8"?>
<configuration>
  <location path="." inheritInChildApplications="false">
    <system.webServer>
      <handlers>
        <add name="aspNetCore" path="*" verb="*" modules="AspNetCoreModuleV2" resourceType="Unspecified" />
      </handlers>
      <aspNetCore processPath="dotnet" arguments=".\dieshiqiaoAPI.dll" stdoutLogEnabled="false" stdoutLogFile=".\logs\stdout" hostingModel="inprocess" />
    </system.webServer>
  </location>
    <system.webServer>
        <httpProtocol>
            <customHeaders>
                <add name="Access-Control-Allow-Origin" value="*" /> <!--配置了这里-->
                <add name="Access-Control-Allow-Headers" value="Content-Type" /><!--配置了这里-->
                <add name="Access-Control-Allow-Methods" value="GET, POST, PUT,DELETE,OPTIONS,PATCH" /><!--配置了这里-->
            </customHeaders>
        </httpProtocol>
    </system.webServer>
</configuration>
<!--ProjectGuid: D7EDB42F-42CD-477F-9AEB-311886878D51-->

我想要达到的结果

想正常的把uni-app本地图片上传到IIS服务器上

var builder = WebApplication.CreateBuilder(args);

// Add services to the container.

builder.Services.AddControllers();
// Learn more about configuring Swagger/OpenAPI at https://aka.ms/aspnetcore/swashbuckle
builder.Services.AddEndpointsApiExplorer();
builder.Services.AddSwaggerGen();
//在这里设置跨域
builder.Services.AddCors(cor =>
{
    cor.AddPolicy("Cors", policy =>
    {
        policy
        .AllowAnyOrigin()
        .AllowAnyHeader()
        .AllowAnyMethod();
    });
});


var app = builder.Build();

// Configure the HTTP request pipeline.
if (app.Environment.IsDevelopment())
{
    app.UseSwagger();
    app.UseSwaggerUI();

    app.UseCors("CORS");
}

app.UseHttpsRedirection();

app.UseAuthorization();

app.MapControllers();
//这里调用跨域
app.UseCors("Cors");

app.Run();

在下用的是vs2022 项目是asp.net core web api