将字符串从Angular传递到API [英] Passing string from Angular to API

问题描述

我想通过Angular在我的ASP.NET Core MVC API控制器中填充一个字符串参数.

I want to fill in one string parameter in my ASP.NET Core MVC API controller via Angular.

我有这个工作电话:

API

//A class to wrap my string
public class Foo
{
  public string bar { get; set; }
}

[HttpPost]
public JsonResult GetDetails([FromBody] Foo bar) { ... }

角度(服务)

public get() {
  let bar: any = new Object();
  bar.foo = 'Hello World';

  return this._httpClient.post('api/GetDetails', bar).toPromise();
}

但是我真正想要的是传递一个字符串，而不必将其包装在这样的类中:

But what I really want is pass a string without having to wrap it in a class like this:

API

[HttpPost]
public JsonResult GetDetails([FromBody] string bar) { ... }

角度(服务)

public get() {
let bar: string = "Hello World";

return this._httpClient.post('api/GetDetails', bar).toPromise();
}

但是我收到错误消息，例如它是不受支持的媒体类型，或者'bar'保持为空.
仅传递一个值的正确语法是什么?
另一件事是，我可以将Angular的整数传递给API，但不能传递字符串.

But I get errors like it's an Unsupported Media Type or 'bar' stays null.
What is the right syntax to just pass one value?
The other thing is, I can pass an integer from Angular to the API just fine but not a string.

推荐答案

尝试一下:

let bar = JSON.stringify({'foo' : 'Hello World'});
let body = new HttpParams();
body = body.set('bar', bar);

http.post('/api/GetDetails', body).subscribe();

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