错误TypeError：无法读取未定义的属性'then'-Java 学习之路

控制台输出我这个错误：“TypeError：无法读取属性'然后'未定义” . 任何帮助表示赞赏 . 最好的帮助是理解我在处理这个问题时的错误 .

ngOnInit() : void {
            super.ngOnInit();
            this.prerequisites = Promise.all([
                this.apiClient.getResources(ClientGroupResource, {order: 'title ASC'}),
                this.apiClient.getResources(SettingResource)
            ]).then(results => {
                this.groups = <any>results[0];
                let settings : ResourceList<SettingResource> = <any>results[1];
                for (let i : number = settings.items.length; i--;) {
                    if (settings.items[i].key == 'color_booking') {
                        this.defaultBookingColor = settings.items[i].value;
                    } else if (settings.items[i].key == 'color_recurring_booking') {
                        this.subscriptionBookingColor = settings.items[i].value;
                    }
                }
            }).catch(e => {
                this.handleError(e);
        });
        this.routeReady()
        }

       routeReady() : void {
        super.routeReady();
        this.activeRoute.params.pipe(
        switchMap((params : Params) => {
              return this.prerequisites.then(() => {
                return this.loadPageData(params);
               });
            }))
            .subscribe();
    }

loadpage链接中的功能代码

1 回答

您需要在belwo代码中返回值

this.prerequisites = Promise.all([
                this.apiClient.getResources(ClientGroupResource, {order: 'title ASC'}),
                this.apiClient.getResources(SettingResource)
            ]).then(results => {
                return results;
                .....
            });

回复于 2024-04-19T09:01:49+08:00

错误TypeError：无法读取未定义的属性'then'

1 回答

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