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Blazor项目中建立WebApi

1. Program.cs中添加代码：

 //第一步
 builder.Services.AddControllers();
 
 .....
  //第二步
 app.MapControllers();

2. 创建接口文件

using Microsoft.AspNetCore.Mvc;

namespace Niunan.Net.Charge.BlazorWeb.JieKou
{
    [Route("/api/[controller]/[action]")]
    public class CommonController : Controller
    {
        //第三步
        [HttpGet]
        public IActionResult GetCategory()
        {
            return Json(new { code = 0, msg = "success", data = "hello 牛腩" });
        }
    }
}

3. 运行即可看到效果，http://localhost:5056/api/common/getcategory