c# - 如何在asp.net core razor pages项目中调用 Controller 中定义的函数

Question

我是 asp.net core 的新手，我正在探索不同的方法来对 Controller 中定义的函数进行 api 调用。

我有一个基本的新闻 Controller ，如下所示，如果我在这个 Controller 中只保留一个功能 GetAll()然后我就可以使用 https://localhost:44364/api/news 成功调用 api

当我添加其他两个函数时，同样 https://localhost:44364/api/news得到如下错误消息，这很明显，因为我没有在我的 url 中不提及函数名称。

我的问题是如何为每个函数定义路由，以便我可以通过 url 和从 ajax 函数调用这些函数中的每一个

错误

 BookListRazor.Controllers.NewsController.GetSingleNews (BookListRazor)
    BookListRazor.Controllers.NewsController.GetAll (BookListRazor)
    BookListRazor.Controllers.NewsController.GetAllNews (BookListRazor)

代码

 using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Threading.Tasks;
    using BookListRazor.Model;
    using Microsoft.AspNetCore.Mvc;
    using Microsoft.EntityFrameworkCore;

    namespace BookListRazor.Controllers
    {
        [Route("api/News")]
        [ApiController]
        public class NewsController : Controller
        {
            private readonly ApplicationDbContext _db;

            public NewsController(ApplicationDbContext db)
            {
                _db = db;
            }

            //get all news by languageID
            [HttpGet]
           // [Route("api/news/getallnews/{1}")]
            public async Task<IActionResult> GetAllNews(int langID)
            {
                //var query = await _db.News.OrderByDescending(x => x.NewsDate).Where(x => x.LanguageID == 1 && x.NewsActive==true && x.NewsVisible==true).ToListAsync();

                return Json(new { data = await _db.News.OrderByDescending(x => x.NewsDate).Where(x => x.LanguageID == langID && x.NewsActive == true && x.NewsVisible == true).ToListAsync() });
            }

            //get all news 
            [HttpGet]
            public async Task<IActionResult> GetAll()
            {
                return Json(new { data = await _db.News.OrderByDescending(x => x.NewsDate).Where(x => x.LanguageID == 1 && x.NewsActive == true && x.NewsVisible == true).ToListAsync() });
            }


            //get single news by newsID
            [HttpGet]
            public async Task<IActionResult> GetSingleNews(int id)
            {
                return Json(new { data = await _db.News.FirstOrDefaultAsync(x=>x.NewsID == id) });
            }

        }
    }

Answer 1

你可以像下面这样改变:

[Route("api/News/[action]")]
[ApiController]

请求网址如下:

//https://localhost:44364/api/news/GetAllNews?langID=1
[HttpGet]
public async Task<IActionResult> GetAllNews(int langID)
{
}

//https://localhost:44364/api/news/GetAll
[HttpGet]
public async Task<IActionResult> GetAll()
{       
}

//https://localhost:44364/api/news/GetSingleNews?id=1
[HttpGet]
public async Task<IActionResult> GetSingleNews(int id)
{       
}