如何在 Angular2 的 DELETE 请求中传递参数

How to pass parameter in DELETE request in Angular2

我正在尝试在 Angular 2.

中创建一个 Delete 请求

我做的是这样的-

import { Component } from '@angular/core';
import { Http, RequestOptions, URLSearchParams } from '@angular/http';
//import { Http, Response, Headers, RequestOptions, URLSearchParams } from '@angular/http';
import { Profile } from '../../dataModel/Profile.ts';   //Data Model

@Component({
    selector: 'profile-list',
    template: require('./profileList.component.html'),
    styles: [require('./profileList.component.css')]
})

export class ProfileListComponent
{
    private _deleteProfileUrl: string = "/api/Profile/Delete";

    constructor(private http: Http)
    {
    }

    public deleteProfile(profileId)
    {
        this.http.delete(this._deleteProfileUrl, new RequestOptions({
            // Have to make a URLSearchParams with a query string
            search: new URLSearchParams('profileId=' + profileId) // <-----
        }));

        alert("Deleted - " + profileId);
    }
}

所以,我正在创建这样的删除请求-

this.http.delete(this._deleteProfileUrl, new RequestOptions({
        // Have to make a URLSearchParams with a query string
        search: new URLSearchParams('profileId=' + profileId) // <-----
    }));

但它不工作,也没有给出任何错误。

因为如果调用了deleteProfile函数,只有alert来了,没有AJAX请求完成

因为函数调用后我有这样的东西-

我保证 API 工作正常。

那么,谁能帮我解决我做错了什么?

此外-

我的完整代码可以找到here (if needed)

在此先感谢您的帮助。

Observables 是惰性的。即使您不想处理响应,您也必须订阅它们才能执行请求。所以可以这样写:

this.http.delete(this._deleteProfileUrl, new RequestOptions({
     search: new URLSearchParams('profileId=' + profileId)
   })).subscribe(res => {
     alert("Deleted - " + profileId);
   });