您好我试图在我的Web应用程序中实现firestore,当我向构造函数添加服务时出现错误：
NullInjectorError: No provider for TesteventService!
我正在使用Angular 5,angularfire2 / firestore和typescript 2.7.1
testevent.service.ts
import { Injectable } from '@angular/core';
import { AngularFirestore } from 'angularfire2/firestore'
@Injectable()
export class TesteventService {
constructor(private afs: AngularFirestore) { }
addEvent(eventData){
this.afs.collection('testevent').add(eventData).then(() => {
console.log('Done');
})
}
getEvent(){
return this.afs.collection('testevent',ref => ref.orderBy('id')).valueChanges()
}
}
component.ts
import { Component,OnInit } from '@angular/core';
import { TesteventService } from '../../providers/testevent.service';
import { AngularFirestore } from 'angularfire2/firestore';
export class CsvImportComponent implements OnInit {
data_rows = []
constructor(private event: TesteventService){})
解决方法
您需要在app.module.ts中的导入下的提供程序下添加TesteventService
providers: [ TesteventService ]
