我正在构建一个角度2服务来搜索特定信息。我的服务几乎正常,但我一直收到这个错误:
core.es5.js:1020 ERROR TypeError: res.json is not a function at MapSubscriber.project
import { Injectable } from '@angular/core';
import { HttpClient } from '@angular/common/http';
import { Response } from '@angular/http';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/operator/map';
import 'rxjs/add/operator/debounceTime';
import 'rxjs/add/operator/distinctUntilChanged';
import 'rxjs/add/operator/switchMap';
import { FundraiserProgressService } from 'app/services/fundraiser-progress.service';
@Injectable()
export class SearchService {
baseUrl: String = 'http://localhost:4402/items';
queryUrl: string = '?search=';
constructor(private http: HttpClient) { }
search(terms: Observable<string>) {
return terms.debounceTime(400)
.distinctUntilChanged()
.switchMap(term => this.searchEntries(term));
}
searchEntries(term) {
return this.http
.get(this.baseUrl + this.queryUrl + term)
.map((res: Response) => res.json())
}
}
答案 0 :(得分:1)
这是因为使用Angular版本4.3.0中的新HttpClient
,JSON是假定的默认值,不再需要显式解析。因此,您可以删除valgrind --leak-check=yes --show-reachable=yes ./myProgram
。
以下是documentation:
的示例.map((res: Response) => res.json())