Mvc5 WEBAP2 How the foreground uses Ajax to request the background API

According to the normal wording, there are always 404 errors, studied for a long time, found here the solution: Http://buxuxiao.com/article/using-jquery-to-post-frombody-parameters-to-web-api

Now summarize,

In case of a single parameter:

1, the background parameters of the correct wording as follows:

        [Route ("services/{controller}/{action}")][httppost][httpget]  Public string Uploadtransportnetworkalarmchat ([frombody]string  obj) {
...}

You must precede the parameter list with the [Formbody] label.

2, the parameters of the foreground, still added in Key-value mode, but the key name must be set to null:

$.ajax ({                "POST",                ".. /services/chattest/uploadtransportnetworkalarmchat ",                data: {" ":" HelloWorld "},                ' JSON ' ,})

Multiple parameters in the case,

1, the background needs to define the entity class, the parameter list does not add the [Frombody] label, as follows:

     Public class Tempobj    {        publicstringgetset;}          Public string Get Set ; }    }

Receive method:

[Route ("services/{controller}/{action}")]        [HttpPost]        [HttpGet]          Public string uploadtransportnetworkalarmchat (tempobj obj)        {}

2. The foreground still uses JSON

            var Tempobj = {"ImgBase64": Image, "name": "HelloWorld" }            $.ajax ({                "POST",                "..") /services/chattest/uploadtransportnetworkalarmchat ",                data:tempobj,                ' JSON ',            })              . Done (function  (data) {                  alert ("Data Loaded:" + data);              });