如何从 ASP.NET 核心中的 JSON 请求正文中读取多个参数？

Question

Essentially, I have an API endpoint like this:

public async Task<ActionResult<UserDTO>> SignUp(string username, string password, Guid inviteId)

I want all these parameters to come from a JSON object in the request body like so:

{
    'username': 'foo',
    'password': 'bar',
    'inviteId': '00000000-0000-0000-0000-000000000000'
}

I know I can create a class with these parameters as fields, but is there a cleaner way to do this? Also, how do I accept a parameter from the JSON object and another source? (ie inviteId could come from the JSON object or the query string)

EDIT : To clarify, I don't want to use a custom class, or something like JObject. I want the function to receive its parameters directly, without having to do any manual unpacking or parsing. Basically, the function signature should stay as SignUp(string username, string password, Guid inviteId) , and the solution should add on to ASP.NET's model binding functionality. Also, I don't want to use any third-party packages if I can help it.

Answer 1

There is a few alternatives. I would use model-binding to accomplish this:

[HttpGet] // Or any HTTP method
public IActionResult GetSomething([FromRoute] string username, [FromQuery] SomeQuery query) 

Reference

Answer 2

Use JObject in NewtonSoft package .

1. import

   using Newtonsoft.Json.Linq;

2. Change the method like,

   public async Task<ActionResult<UserDTO>> SignUp([FromBody] JObject dataObject)

3. you can access the data by key,

    var username = dataObject["username"].ToString(); var password= dataObject["password"].ToString();

Using this mechanism, you can process complex JSON objects without model binding.