类型“{}”上不存在属性“json”

I have an abstract base class in Typescript that looks like this:

我在Typescript中有一个抽象基类，如下所示：

import {Http, Headers, Response} from 'angular2/http'; 
export abstract class SomeService {
    constructor(private http:Http) {}   

    protected post(path:string, data:Object) {
        let stringifiedData = JSON.stringify(data);
        let headers = new Headers();
        headers.append('Content-Type', 'application/json');
        headers.append('Accept', 'application/json');

        this.http.post(`http://api.example.com/${path}`, stringifiedData, { headers })
            .map(res => res.json())
            .subscribe(obj => console.log(obj));
    }
}

It works perfectly. However, the Typescript compiler is complaining about .map(res => res.json()). I keep getting this error:

它完美地运作。但是，Typescript编译器抱怨.map（res => res.json（））。我一直收到这个错误：

ERROR in ./src/app/components/shared/something/some.abstract.service.ts
(13,29): error TS2339: Property 'json' does not exist on type '{}'.

I followed the examples in the angular 2 documentation, and it works. I'm just sick of staring at this error. Am I missing something?

我按照角度2文档中的示例进行操作，它可以工作。我只是厌倦了盯着这个错误。我错过了什么吗？

2 个解决方案

#1

To me this looks strange...

对我来说这看起来很奇怪......

.map(res => (<Response>res).json())

I would do

我会做

.map((res: Response) => res.json())

#2

You can get rid of this error by type-assertion to Response:

你可以通过类型断言来消除这个错误到Response：

.map((res: Response) => res.json())

http.post() will return a Observable<Response> on wich map will require an Object of type Response. I think that's a missing definition in the current TypeScript AngularJS .d.ts.

http.post（）将返回一个Observable ，它将需要一个Response类型的Object。我认为这是当前TypeScript AngularJS .d.ts中缺少的定义。

#1