在Angular 2中从config.json获取数据 [英] Get data from config.json in Angular 2

问题描述

我想从配置文件中加载所有网址.我已经创建了名为'config.json的json文件ConfigurationService.ts来通过密钥获取URL.但是我无法通过密钥获取URL.

I want to load all url from a config file. I've created json file named 'config.json", ConfigurationService.ts to get the URL by key. But I cannot get the URL by key.

config.json:

config.json:

{
"loginUrl": "http:example/login",
"verifyUrl": "http:example/verify"
}

ConfigurationService.ts:

ConfigurationService.ts:

import {Injectable} from '@angular/core';
import {Http, Response} from '@angular/http';
import {Headers, RequestOptions} from '@angular/http';
import {Observable} from 'rxjs/Observable';

@Injectable()
export class ConfigurationService {
constructor(private http:Http) {}

private result: Object;

getConfiguration(key) {
    return this.http.get('./app/config/config.json').map(res => {
        res.json();
        this.result = res._body;
        return this.result[key]; //returns 'undefined', but when I return only 'this.result'  it shows me all json data {...}
    });
}
}

auth_service.ts的一部分:

part of auth_service.ts:

private x =this.configurationService.getConfiguration("verifyUrl").subscribe((result) => console.log(result));

例如，我如何仅接收loginUrl?

How do I receive only the loginUrl for example?

推荐答案

我认为您正在寻找的是这个

I think what you're looking for is this:

getConfiguration(key) {
    return this.http.get('./app/config/config.json').map(res => {
        this.result = res.json();
        return this.result[key];
    });
}

这篇关于在Angular 2中从config.json获取数据的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！