.net core 接口,动态接收各类型请求的参数

[HttpPost]
public async Task<IActionResult> testpost([FromForm] object info)

{
    //Postman工具测试结果：
    //FromBody,Postman的body只有=raw+json时才进的来
    //参数为空时，Body(form-data、x-www-form-urlencoded)解析到的数据也有所不同

    Dictionary<string,object> parmsVals=new Dictionary<string,object>();
    try
    {
        if (HttpContext.Request.Body != null)
        {
            Stream _stream = HttpContext.Request.Body;
            //_stream.Position = 0;
            using (StreamReader reader = new StreamReader(_stream, Encoding.UTF8))
            {
                string strv = await reader.ReadToEndAsync();
          &n