在使用 Datepicker 组件中用到了Locales 

使用方法

module

import { BsLocaleService, zhCnLocale, defineLocale } from 'ngx-bootstrap';

defineLocale('zhcn', zhCnLocale);

constructor(
    private garbageServices: GarbageCollectionService,
    private toastr: ToastrService,
    private localeService: BsLocaleService) {
      this.localeService.use('zhcn'); }

zhcn 必须小写。