加入收藏 | 设为首页 | 会员中心 | 我要投稿 李大同 (https://www.lidatong.com.cn/)- 科技、建站、经验、云计算、5G、大数据,站长网!
当前位置: 首页 > 综合聚焦 > 服务器 > 安全 > 正文

警告:无法解析UsersPermissionsService的所有参数这将成为Angul

发布时间:2020-12-17 08:50:54 所属栏目:安全 来源:网络整理
导读:当我运行build -prod时,我收到以下警告. 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.xWa
当我运行build -prod时,我收到以下警告.
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) {

    }
}

在我的懒惰加载模块中,我有:

providers: [
        { provide: UsersPermissionsService,useClass: UserModulePermissionsService }
    ]

现在,角度5已经出来,我将需要更新,并且消息说这个警告将成为错误.

不明白这里真正的问题是什么.

从基类中删除@Injectable装饰器.您应该只在Angular应该直接实例化的类中包含该装饰器(或任何装饰器)(并且这样做时也使用注入器解析它们的构造函数参数).

因为很明显,在你的情况下,基类不是直接用angular实例化的(它具有注入器不知道的构造函数参数),你应该从中删除装饰器.

(编辑:李大同)

【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容!

    推荐文章
      热点阅读