***。service.ts（1,21）中的错误：错误TS2305：模块'“ *** @ angular / common / http”'没有导出的成员'Response'

Question

  src / app / shared / services / users.service.ts（1,21）中的

ERROR：错误TS2305：   模块'“ C：/ xampp / htdocs / home-money / node_module   s / @ angular / common / http“'没有导出的成员'Response'。

无法解决问题

import {HttpClient, Response} from '@angular/common/http';
import {Injectable} from '@angular/core';
import {Observable} from 'rxjs/Observable';

import {User} from '../models/user.model';

@Injectable()
export class UsersService {
    constructor(private http: HttpClient) {
    }

    getUserByEmail(email: string): Observable<User> {
        return this.http.get(`http://localhost:3000/users?email=${email}`)
            .map((response: Response) => response)
            .map((user: User[]) => user[0] ? user[0] : undefined);
    }
}

Answer 1

此问题在 import {HttpClient, Response} from '@angular/common/http'; 中 @angular/common/http 中没有作为响应的导出成员。它应该是 HttpResponse 。

import {HttpClient, HttpResponse} from '@angular/common/http';

    getUserByEmail(email: string): Observable<User> {
        return this.http.get(`http://localhost:3000/users?email=${email}`)
            .map((response: HttpResponse) => response)
            .map((user: User[]) => user[0] ? user[0] : undefined);
    }

Answer 2

您的输入错误是应该的

import {HttpClient, HttpResponse} from '@angular/common/http';

而且也不需要

.map((response: HttpResponse) => response)

我没看到您做任何修改响应数据的操作