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我是 Angular 的新手。目前我正在学习 angular 6 功能。 当我尝试处理错误时，会出现一些问题，例如，
Module not found: Error: Can't resolve 'rxjs/add/observable/throw' in 'D:\WORKSPACE\Angular5\binding\src\app'
Module not found: Error: Can't resolve 'rxjs/add/operator/catch' in 'D:\WORKSPACE\Angular5\binding\src\app'
ERROR in src/app/employee.service.ts(20,14): error TS2339: Property 'catch' does not exist on type 'Observable'
这是我的 employee.service.ts
import { Injectable } from '@angular/core';
import { HttpClient, HttpErrorResponse } from '@angular/common/http';
import { IEmployee } from './employee';
import { Observable } from 'rxjs';
import 'rxjs/add/operator/catch';
import 'rxjs/add/observable/throw';
//It self injectable defendency.
@Injectable({
providedIn: 'root'
})
export class EmployeeService {
private _url: string = "/assets/data/employees.json";
constructor(private http: HttpClient) { }
getEmployees(): Observable<IEmployee[]>{
return this.http.get<IEmployee[]>(this._url)
.catch(this.errorHandler);
}
errorHandler(error: HttpErrorResponse){
return Observable.throw(error.message || "Server Error");
}
}
员工.ts
export interface IEmployee{
id : number,
name : String,
age : number
}
我尝试使用下面的链接解决这个问题。但是我无法得到我的问题的答案。
Property 'catch' does not exist on type 'Observable'和 Angular HTTP GET with TypeScript error http.get(…).map is not a function in [null]
请给我一些解决方案。谢谢。