Api 丢失了丢失的参数 [英] Api lost lost param

问题描述

我有这个代码来运行我的 api 方法

Hi I have this code to run my api method

export class MessageService {

    constructor(private http: Http) {

    }

    addMessage(textToSend: string) {
        return this.http.post("/api/SendMessage", textToSend); //<- Everytime i have some text in textToSend and this is ok 
    }
}

在我的 Api 之后，我的参数等于 null

And after in my Api my param is equals to null

[HttpPost]
[Route("/api/SendMessage")]
public void SendMessage(string msg) //null value
{
    //some code
}

推荐答案

可能的解决方案 1:

addMessage(textToSend: string) {
    let body = JSON.stringify({ textToSend });
    let headers = new Headers({ 'Content-Type': 'application/json' });
    let options = new RequestOptions({ headers: headers });

    return this.http.post("/api/SendMessage/", body, options);
}

// Server side -1
[HttpPost]
[Route("/api/SendMessage")]
public void SendMessage([FromBody]IDictionary<string, string> msg)
{
    var textToSend = msg["textToSend"];
}

// Or create a model and use it

//Server side -2
public class Model
{
    public string textToSend { get; set; }
}
public void SendMessage([FromBody]Model model)

可能的解决方案 2:

addMessage(textToSend: string) {
    return this.http.post("/api/SendMessage/" + textToSend);
}

[HttpPost]
[Route("/api/SendMessage/textToSend")]
public void SendMessage(string textToSend)
{
    //some code
}

这篇关于Api 丢失了丢失的参数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！