当我运行ng build -prod时，出现以下警告。
Warning: Can't resolve all parameters for UsersPermissionsService in C:/SourceControl/Test.Client/src/app/shared/users/users-permissions.service.ts: (?, ?, ?). This will become an error in Angular v5.x
Warning: Can't resolve all parameters for UsersPermissionsService in C:/SourceControl/Test.Client/src/app/shared/users/users-permissions.service.ts: (?, ?, ?). This will become an error in Angular v5.x
我的代码如下：
import { Injectable } from '@angular/core';
@Injectable()
export class UsersPermissionsService {
public USERS_CREATE_PERMISSION: string = '';
public USERS_UPDATE_PERMISSION: string = '';
public USERS_DELETE_PERMISSION: string = '';
constructor(public UsersCreatePermission: string,
public UsersUpdatePermission: string,
public UsersDeletePermission: string) {
this.USERS_CREATE_PERMISSION = UsersCreatePermission;
this.USERS_UPDATE_PERMISSION = UsersUpdatePermission;
this.USERS_DELETE_PERMISSION = UsersDeletePermission;
}
}
@Injectable()
export class UserModulePermissionsService extends UserPermissionsService {
constructor() {
super("ClientsCreate",
"ClientsEdit",
"ClientsDelete");
}
}
@Component({
templateUrl: './users-permissions.component.html',
providers: [UsersPermissionsService]
})
export class UsersPermissionsComponent {
constructor(public usersPermissionsService: UsersPermissionsService) {
}
}
并且在我的延迟加载模块中，我有：
providers: [
{ provide: UsersPermissionsService, useClass: UserModulePermissionsService }
]
现在角度5消失了，我将需要更新，并且如消息所示，此警告将成为错误。
不明白这里到底是什么问题。