我有以下DataService,它应按链调用以下API,因此我可以将响应从上一个传递到下一个。到目前为止,这是我的开始方式,但是当我尝试访问响应对象的属性之一时,出现以下错误:
为什么会发生这种情况,因为当我console.log响应时,它具有以下结构:
{
"data": "",
"id": ""
}
类型“对象”上不存在属性“数据”。
import { Injectable } from '@angular/core';
import { Person } from './entities/person';
import { HttpClient } from '@angular/common/http';
import 'rxjs/add/operator/toPromise';
import { mergeMap } from '../../node_modules/rxjs/operator/mergeMap';
import { Observable } from '../../node_modules/rxjs/Observable';
@Injectable()
export class DataService {
results: Person[];
apiUrl1: string = 'http://localhost:3000/person/';
apiUrl2: string = 'http://localhost:3000/facility';
apiUrl3: string = 'http://localhost:3000/exposure';
constructor(private http: HttpClient) {
}
createPerson(person: Person): Observable<any> {
return (this.http.post(this.apiUrl1, person)
.map(response => this.http.post(this.apiUrl2, response.data)));
}
答案 0 :(得分:1)
Typescript严格检查响应中的data属性,只需将响应类型更改为任意,
.map((response : any) => this.http.post(this.apiUrl2, response.data)));
答案 1 :(得分:0)
createPerson(person: Person): Observable<any> {
return this.http.post(this.apiUrl1, person)
.subscribe(response => {
// do whatever you wanna do :
this.http.post(this.apiUrl2, response.data)
.subscribe(response2 => {
// continue like this
});
});
}