Auth Guard

该系统的大部分页面都应该是用户登陆以后才可以看见, 没有登陆的话直接应该跳转到登陆页面.

首先建立authguard:

ng g g guards/auth

代码:

import { Injectable } from '@angular/core';

import { CanActivate, ActivatedRouteSnapshot, RouterStateSnapshot, Router } from '@angular/router';

import { Observable } from 'rxjs/Observable';

import 'rxjs/add/operator/map';

import { User } from 'oidc-client';

import { AuthService } from '../services/auth.service';

@Injectable()

export class AuthGuard implements CanActivate {

  constructor(

    private router: Router,

    private authService: AuthService

  ) { }

  canActivate(): Observable<boolean> {

    return this.authService.loginStatusChanged.map((user: User) => {

      if (user) {

        return true;

      }

      this.authService.login();

      return false;

    });

  }

}

然后在app.module.ts里面引用并注册:

import { AuthGuard } from './guards/auth.guard';

const appRoutes: Routes = [

  { path: '', component: DashboardComponent, canActivate: [AuthGuard] },

  { path: 'login-callback', component: LoginCallbackComponent },

  { path: 'register', component: RegisterComponent },

  { path: 'add-client', component: AddClientComponent, canActivate: [AuthGuard] },

  { path: 'client/:id', component: ClientDetailsComponent, canActivate: [AuthGuard] },

  { path: 'edit-client/:id', component: EditClientComponent, canActivate: [AuthGuard] }

];

  providers: [

    ClientService,

    AuthService,

    AuthGuard

  ],

需要权限控制的路由需要加上 canActivate属性, 它的值是一个数组可以使用多个guards.

别忘了在providers里面注册一下.

然后运行.

进入首页 http://localhost:4200, 如果没登陆, 那么直接跳转到authorization server的登陆页面.

使用angular4和asp.net core 2 web api做个练习项目(四)

登录成功后, 会跳转到login-callback, 这里有一个地方需要改一下(可能是oidc-client的bug?):

ngOnInit() {

    this.authService.loginCallBack().subscribe(

      (user: User) => {

        if (user) {

          window.location.href = '/';

        }

      }

    );

  }

使用的是window.location.href='/', 如果使用angular的路由router.navigate跳转的话会有问题.

使用angular4和asp.net core 2 web api做个练习项目(四)

登陆成功后跳转到主页.

做一些清理工作:

由于用户注册是在authorization server进行的, 所以把angular项目中的相关文件以及app.module里面的调用删除...

Settings 系统设置

我们需要做一些全局的设置, 可以全局控制某些参数, 例如我们的余额是否可以输入.

建立settings service:

ng g s services/settings

建立settings model:

ng g interface models/Settings

生成的文件名首字母是小写的, 首字母还是改成大写的吧...

Settings.ts:

export interface Settings {

  disableBalanceOnAdd?: boolean;

  disableBalanceOnEdit?: boolean;

}

settings.service.ts:

import { Injectable } from '@angular/core';

import { Settings } from '../models/Settings';

@Injectable()

export class SettingsService {

  private _settings: Settings = {

    disableBalanceOnAdd: false,

    disableBalanceOnEdit: false

  };

  constructor() { }

  get settings() {

    return this._settings;

  }

}

然后再app.module.ts里面注册:

import { SettingsService } from './services/settings.service';

providers: [

    ClientService,

    AuthService,

    SettingsService,

    AuthGuard

  ]

然后我们使用settings service.

在add-client.component.ts里面:

import { SettingsService } from '../../services/settings.service';

public disableBalanceOnAdd = false;

  constructor(

    public flashMessagesService: FlashMessagesService,

    public router: Router,

    public clientService: ClientService,

    public settingsService: SettingsService

  ) { }

  ngOnInit() {

    this.disableBalanceOnAdd = this.settingsService.settings.disableBalanceOnAdd;

  }

然后运行一下:

使用angular4和asp.net core 2 web api做个练习项目(四)

发现点击添加按钮不起作用!!!!, 点击明细也不起作用!!!!

后来发现, 是auth service和auth guard里面写错了, 先修改auth service:

  tryGetUser() {

    return Observable.fromPromise(this.manager.getUser());

  }

把这个方法改成public的.

然后修改: auth guard:

  canActivate(): Observable<boolean> {

    return this.authService.tryGetUser().map((user: User) => {

      if (user) {

        return true;

      }

      this.authService.login();

      return false;

    });

  }

这次再试试, 就没有问题了. 进入添加客户页面.

使用angular4和asp.net core 2 web api做个练习项目(四)

这个栏位的状态会根据settings里面的设置而变化.

同样在edit-client里面修改一下:

import { SettingsService } from '../../services/settings.service';

disableBalanceOnEdit = false;

  constructor(

    public clientService: ClientService,

    public router: Router,

    public route: ActivatedRoute,

    public flashMessagesService: FlashMessagesService,

    public settingsService: SettingsService

  ) { }

  ngOnInit() {

    this.disableBalanceOnEdit = this.settingsService.settings.disableBalanceOnEdit;

    // 获取ID

    this.id = this.route.snapshot.params['id'];

    // 获取Client

    this.clientService.getOne(+this.id).subscribe(

      client => {

        this.client = client;

      }

    );

  }

运行一下, 应该好用!

最后, 做一下Settings页面

需要改一下setting.serviec, 将使用localstorage来存储settings:

import { Injectable } from '@angular/core';

import { Settings } from '../models/Settings';

@Injectable()

export class SettingsService {

  private _settings: Settings = {

    disableBalanceOnAdd: true,

    disableBalanceOnEdit: false

  };

  constructor() {

    if (localStorage.getItem('settings')) {

      this._settings = JSON.parse(localStorage.getItem('settings'));

    }

  }

  get settings() {

    return this._settings;

  }

  set settings(value: Settings) {

    this._settings = value;

    localStorage.setItem('settings', JSON.stringify(this._settings));

  }

}

然后打开settings.component.ts:

import { Component, OnInit } from '@angular/core';

import { SettingsService } from '../../services/settings.service';

import { Router } from '@angular/router';

import { FlashMessagesService } from 'angular2-flash-messages';

import { Settings } from '../../models/Settings';

@Component({

  selector: 'app-settings',

  templateUrl: './settings.component.html',

  styleUrls: ['./settings.component.css']

})

export class SettingsComponent implements OnInit {

  settings: Settings;

  constructor(

    private settingsService: SettingsService,

    private flashMessagesService: FlashMessagesService,

    private router: Router

  ) { }

  ngOnInit() {

    this.settings = this.settingsService.settings;

  }

  onSubmit() {

    this.settingsService.settings = this.settings;

    this.flashMessagesService.show('Settings 保存了', { cssClass: 'alert-success', timeout: 4000 });

  }

}

这个很简单.

然后是html:

<div class="row">

  <div class="col-md-6">

    <a routerLink="/" class="btn btn-link">

      <i class="fa fa-arrow-circle-o-left"></i> 回到Dashboard</a>

  </div>

  <div class="col-md-6">

  </div>

</div>

<div class="card">

  <div class="card-header">

    <h3>编辑 Settings</h3>

  </div>

  <div class="card-body">

    <form (submit)="onSubmit()">

      <div class="form-group">

        <label for="disableBalanceOnAdd">Disable Blance on Add</label>

        <input type="checkbox" id="disableBalanceOnAdd" name="disableBalanceOnAdd" [(ngModel)]="settings.disableBalanceOnAdd">

      </div>

      <div class="form-group">

        <label for="disableBalanceOnEdit">Disable Blance on Edit</label>

        <input type="checkbox" id="disableBalanceOnEdit" name="disableBalanceOnEdit" [(ngModel)]="settings.disableBalanceOnEdit">

      </div>

      <input type="submit" class="btn btn-primary btn-block" value="Submit">

    </form>

  </div>

</div>

别忘了在app.module里面添加路由:

const appRoutes: Routes = [

  { path: '', component: DashboardComponent, canActivate: [AuthGuard] },

  { path: 'login-callback', component: LoginCallbackComponent },

  { path: 'add-client', component: AddClientComponent, canActivate: [AuthGuard] },

  { path: 'client/:id', component: ClientDetailsComponent, canActivate: [AuthGuard] },

  { path: 'edit-client/:id', component: EditClientComponent, canActivate: [AuthGuard] },

  { path: 'settings', component: SettingsComponent, canActivate: [AuthGuard] },

  { path: '**', component: PageNotFoundComponent }

];

顺便把page Not found的路由也加上, 使用 ** wildcard.

最后在navbar.html 添加上链接按钮:

        <li *ngIf="isLoggedIn" class="nav-item">

          <a class="nav-link" href="#" routerLink="/settings">Settings </a>

        </li>

运行一下试试:

使用angular4和asp.net core 2 web api做个练习项目(四)

刷新, 查看添加和编辑页面,再刷新, 应该好用.

这个联系项目就到这了.

然后我要用asp.net core 2.0 web api 和 identity server 4 以及 angular 5 做一个项目了(angular 5正式版刚刚出来), 大约 300个页面......

也许之前还要做一个练习..请各位指教...

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使用angular4和asp.net core 2 web api做个练习项目(四)

Auth Guard

做一些清理工作:

Settings 系统设置

最后, 做一下Settings页面

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