.net core webapi 在原有基础上修改。

using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;

namespace WebAPIForAndroid.Controllers
{
    //[Route("api/[controller]")] //默认的路由规则
    //url由原来的http://localhost:59640/api/StuInFors  变成：http://localhost:59640/api/StuInFors/post/
    [Route("api/[controller]/[action]")]//自定义路由规则（必须指定action）
    [ApiController]
    public class StuInForsController : ControllerBase
    {
        // GET api/StuInFors
        [HttpGet]
        //public ActionResult<IEnumerable<string>> Get()
        public JsonResult Get()
        {
            string sql = "select top 100 * from dbo.infor";
            DataTable datatable = DBHelper.DBExecuteByAdapter(sql);
            string jsonstr = JSONInterFace.DataTableToJsonWithJsonNet(datatable);
            return new JsonResult(jsonstr) ;
        }

        // GET api/StuInFors/5
        [HttpGet("{hno}")]
        public JsonResult Get(string hno)//注意：参数名称必须和路由[HttpGet("")]中的template相同，否则取不到值。
        {
            string sql = "select * from dbo.infor where [no]='" + hno + "'";
            DataTable datatable = DBHelper.DBExecuteByAdapter(sql);
            string jsonstr = JSONInterFace.DataTableToJsonWithJsonNet(datatable);
            return new JsonResult(jsonstr);
        }

        // POST api/StuInFors
        [HttpPost]
        public string Post()//[FromBody] string value)
        {
            string retvalue = "addfailed";
            if (Request.Form.ContainsKey("androidkey"))
            {
                //既然从Form里取值了，所以不要参数：[FromBody] string value
                //能取到
                retvalue = Request.Form["androidkey"];
            }
            if (!string.IsNullOrEmpty(retvalue))
            {
                retvalue = "addsuccess";
            }
            return retvalue;
        }

        // PUT api/StuInFors/5
        [HttpPut("{id}")]
        public void Put(int id, [FromBody] string value)
        {
        }

        // DELETE api/StuInFors/5
        [HttpDelete("{hno}")]
        public void Delete(string hno)
        {
            string sql = "delete from dbo.infor where [no]='" + hno + "'";
            DBHelper.DBExecute(sql);
        }
    }
}

 部署到IIS后用Postman调用结果：

关于如何部署.net core webapi 到IIS 请看本人上一篇：https://www.cnblogs.com/longdb/p/10015302.html