我编写了一个功能模块,下面是代码
app.ticket.service.ts
,这是我想要注入的服务
'use strict';
import { Injectable } from '@angular/core'
Injectable()
export class AppTicketService {
SaveTicket(): string {
return "service saved ticket";
}
}
app.tickets.module.ts
,这是我的功能模块
'use strict';
import { NgModule } from '@angular/core';
import { SharedModule } from '../shared/app.shared.module';
import { AppCreatTicketComponent } from './app.create-ticket.component';
//-- import services
import { AppTicketService } from './app.ticket.service';
//-- import routing
import { ticketRouting } from './app.ticket.routing';
@NgModule({
declarations:[ AppCreatTicketComponent],
imports:[ SharedModule,
ticketRouting],
exports:[],
providers:[AppTicketService]
})
export class TicketsModule { }
app.create-ticket.component.ts,这是我的组件, 属于功能模块
'use strict';
import { Component , OnInit , Inject} from '@angular/core';
//-- import service
import { AppTicketService } from './app.ticket.service';
@Component({
templateUrl: '/tickets/create'
})
export class AppCreatTicketComponent implements OnInit{
ngOnInit(){}
constructor(public service1 :AppTicketService) {
let test = this.service1.SaveTicket();
}
}
在运行时我得到:
“无法解析AppCreatTicketComponent的所有参数:”浏览器控制台中的错误
需要修改哪些内容才能解决此问题?
答案 0 :(得分:0)
要修复此问题,我必须修改app.create-ticket.component.ts文件中的构造函数参数
<强>原始强>
constructor(public service1 :AppTicketService)
<强>修饰强>
constructor(@Inject(AppTicketService) private service1: AppTicketService)
您可以找到here
的原因