Question

我想使用Http和Observable从Localhost上按角度获取数据，这是我的服务

import { Injectable } from '@angular/core';
import { Observable } from 'rxjs';
import { of } from 'rxjs';
import { HttpClient } from '@angular/common/http';
import { HttpParams } from '@angular/common/http';
import { IGames } from './games';

@Injectable({
  providedIn: 'root'
})
export class GamesService {

  constructor(private http: HttpClient) { }
  test():Observable<any>{
    return of("test");
  }
  getGames():Observable<IGames[]>{
    return this.http.get<IGames[]>('http://localhost/pmn/uas/getgames.php');
  }
}

我创建了这个构造函数，以便可以从任何地方获取它

export interface IGames{id:number, name:string, description:string, pictute:string}

这是我的games.component.ts

import { Component, OnInit } from '@angular/core';
import { GamesService } from '../games.service';
import { IGames } from '../games';

@Component({
  selector: 'app-games',
  templateUrl: './games.component.html',
  styleUrls: ['./games.component.css']
})
export class GamesComponent implements OnInit {

  constructor(private gs:GamesService) { }
  games=[];
  ngOnInit() {
    this.gs.getGames().subscribe(
      (data)=>{
        this.games=data;
        console.log=data;
      }
    );
  }
}

虽然此代码有效，但是在我的终端上它始终显示此错误

ERROR in src/app/games/games.component.ts(18,9): error TS2322: Type 'IGames[]' is not assignable to type '(message?: any, ...optionalParams: any[]) => void'.
  Type 'IGames[]' provides no match for the signature '(message?: any, ...optionalParams: any[]): void'.

Answer 1

对我来说很好，进行了2次更改：1）将GamesComponent.games声明移到构造函数上方，并添加类型：games: IGames[] = []; 2）console.log = data应该为console.log(data);

export class GamesComponent implements OnInit {

  // members should be above constructor
  games: IGames = [];

  constructor(private gs:GamesService) { }
  ngOnInit() {
    this.gs.getGames().subscribe(
      (data)=>{
        this.games=data;
        // console.log is a function
        console.log(data);
      }
    );
  }
}

无法分配TypeScript类型“ IGames []”上的错误TS2322

1 个答案: