Dify创建自定义工具，调用ASP.NET Core WebAPI时的注意事项（出现错误：Reached maximum retries (3) for URL ...）

1、要配置Swagger

using Microsoft.AspNetCore.Mvc;
using Microsoft.OpenApi.Models;
var builder = WebApplication.CreateBuilder(args);
builder.Services.AddCors(options =>
{
    options.AddPolicy("AllowSpecificOrigin",
        builder => builder.WithOrigins("http://172.20.10.7:5619") // 替换为你的Dify域名
                            .AllowAnyMethod()
                            .AllowAnyHeader());
});
// 添加控制器服务
builder.Services.AddControllers();
// 配置Swagger
builder.Services.AddSwaggerGen(c =>
{
    c.SwaggerDoc("v1", new OpenApiInfo
    {
        Title = "PowerApi",
        Version = "v1",
        Description = "A simple API to calculate powers of a number from 0 to 50.",
        Contact = new OpenApiContact
        {
            Name = "Your Name",
            Email = "your.email@example.com",
            Url = new System.Uri("https: