Question

我希望以机器可读的格式（如JSON）从DBpedia获取课程信息。

例如，如何将this页面作为JSON或JSON-LD？

我确实找到了this JSON文件，但它不包含属性。

Answer 1

为什么不使用本体文件？与.nt和.owl中的每个版本一起发布

2016-10：

某事like：

import { AppSandbox } from '../../shared/sandbox/app-sandbox';
import { Observable } from 'rxjs/Observable';
import { Action } from '@ngrx/store/store';
import { Injectable } from '@angular/core';
import { Store } from '@ngrx/store';
import { ProvidersListService } from '../../shared/services/provider-list.service';
import {
    SetServiceProvidersAction,
    SetSelectedServiceProviderId,
    SetDeviceListAction
} from '../../shared/state-management/actions/serviceprovider.actions';
import * as fromRoot from '../../shared/reducers/index';
import { AppStateManager } from '../../shared/state-management/app-state-manager';
import { ServiceAction, ServiceActionTypes } from '../../shared/models/service-action';
import { Device } from '../../shared/models/device';
import { ServiceProviderResult } from '../../shared/models/service-provider';

@Injectable()
export class NavbarSandbox extends AppSandbox {

    constructor(private providersListService: ProvidersListService, private appStateManager: AppStateManager) {
        super();

    }

    // TODO: create action using ActionFactory
    // To get data from service
    public getServiceProviderListAPI(payload: any): Observable<Array<ServiceProviderResult>> {
        const data$ = super.invokeService(new ServiceAction(ServiceActionTypes.GET_SERVICE_PROVIDERS, payload), this.providersListService)
            .subscribe((res: Array<ServiceProviderResult>) => {
                this.setListOfServiceProviders(new SetServiceProvidersAction(res));
            });
        return this.getListOfServiceProviders();
    }

    getDeviceListByIdAPI(): void {
        let selectedId: number;
        this.getSelectedServiceProvider().subscribe((data) => { selectedId = data.id; });
        const data$ = super.invokeService(new ServiceAction(ServiceActionTypes.GET_DEVICE_LIST, selectedId), this.providersListService)
            .subscribe((res: Array<Device>) => {
                this.setDeviceDatabyId(new SetDeviceListAction(res));
            });
    }

    // To save data in store
    private setListOfServiceProviders(action: Action): void {
        this.appStateManager.saveToStore(action);
    }

    // To set the device data based on selected value
    private setDeviceDatabyId(payload: any): void {
        this.appStateManager.saveToStore(new SetDeviceListAction(payload));
    }

    // To set the selected ID from dropdown
    public setSelectedServiceProvider(payload: any): void {
        this.appStateManager.saveToStore(new SetSelectedServiceProviderId(payload));
        // To call and store device data into store.
        this.getDeviceListByIdAPI();
        this.getDeviceListbySelectedId().subscribe((data) => {console.log(data); });

    }

    // To get data from store
    public getListOfServiceProviders(): Observable<Array<ServiceProviderResult>> {
        return this.appStateManager.getFromStore<Array<ServiceProviderResult>>(state => state.providerState.listOfServiceProviders);
    }

    public getSelectedServiceProvider(): Observable<ServiceProviderResult> {
        return this.appStateManager.getFromStore<ServiceProviderResult>(state => state.providerState.selectedServiceProvider);
    }

    public getDeviceListbySelectedId(): Observable<Array<Device>> {
        return this.appStateManager.getFromStore<Array<Device>>(state => state.providerState.listOfDevices);
    }
}

更新

对于json输出附加＆amp; format = json或＆amp; format = json-ld：click。

如何将DBpedia本体类作为JSON或JSON-LD？

1 个答案: