详解在ASP.NET Core中使用Angular2以及与Angular2的Token base身份认证-侯体宗的博客

详解在ASP.NET Core中使用Angular2以及与Angular2的Token base身份认证
前端 / 管理员发布于 5年前 351

Angular2是对Angular1的一次彻底的，破坏性的更新。

相对于Angular1.x，借用某果的广告语，唯一的不同，就是处处都不同。

•首先，推荐的语言已经不再是Javascript，取而代之的TypeScript，(TypeScript = ES6 + 类型系统 + 类型注解), TypeScriipt的类型系统对于开发复杂的单页Web app大有帮助，同时编译成javascript后的执行效率也比大多数手写javascript要快。有兴趣的同学可以查阅官方文档：英文传送门 |中文传送门。

•得益于彻底重构，性能相对于Angular1.x有了大幅提升，也更适合再全平台部署。

•Angular2是基于Component的，Component可以理解为是1.x时代的Controller + $Scope + view

•View的很多语法也做了更新，比如<li ng-repeat="movie in vm.movies"></li> 变成了 <li *ngFor="let movie of movies"></li>

关于Angular2，强烈建议查阅官方文档：英文传送门| 中文传送门

注意：本文章属于Step by step + Code Sample教程，且篇幅较长，建议下载本Sample并跟着本文进度自己重做一遍本例，下载完整代码并分析代码结构才有意义，下载地址：How to authorization Angular 2 app with asp.net core web api

1.前期准备

•推荐使用VS2015 Update3或更新的版本完成本示例，下载地址：softjc/446184.html

•你需要安装.NET Core开发环境，这里提供VS版: softs/472362.html

•安装Node.js 版本5.0.0或以上，（在本例中，这个主要是编译TypeScript用的）下载地址：Node.js and NPM

•NPM 3.0.0或以上，默认NPM会随着Node.js一并安装完毕。（在本例中，这个主要是下载各种Angular的各个包用的，参考VS中的Nuget）

2.创建项目

在VS中新建项目，项目类型选择 ASP.NET Core Web Application(.Net Core)，输入项目名称为：CSAuthorAngular2InASPNetCore，Template选择为Empty.

3.在项目中整合Angular2

3.1.配置Startup.cs

注：添加下面的代码时IDE会报代码错误，这是因为还没有引用对用的包，进入报错的这一行，点击灯泡，加载对应的包就可以了。

（图文无关）

在ConfigureServices中添加如下代码

services.AddMvc();

这里是添加MVC服务

在Configure中添加如下代码

app.UseStaticFiles();app.UseMvc(routes =>{  routes.MapRoute(    name: "default",    template: "{controller=Home}/{action=Index}");});

第一句是启用静态文件，第二句是应用MVC模式并添加路由配置。

完整的代码应该是这个样子

public class Startup{  // This method gets called by the runtime. Use this method to add services to the container.  // For more information on how to configure your application, visit http://go.microsoft.com/fwlink/?LinkID=398940  public void ConfigureServices(IServiceCollection services)  {    services.AddMvc();  }  // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.  public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerFactory loggerFactory)  {    app.UseStaticFiles();    app.UseMvc(routes =>    {      routes.MapRoute(        name: "default",        template: "{controller=Home}/{action=Index}");    });  }}

3.2.添加控制器以及视图

3.2.1.在项目根目录下添加Controllers目录，并在其中添加一个控制器HomeController.cs，默认代码即可。

3.2.2.在项目跟目录下创建Views目录，在Views目录中新建目录Home, 最后在Home目录中新建视图Index.cshtml，内容应该是这样：

<html><head>  <title>Angular QuickStart</title>  <base href="/">  <meta charset="UTF-8">  <meta name="viewport" content="width=device-width, initial-scale=1">  <!-- 1. Load libraries -->  <!-- Polyfill(s) for older browsers -->  <script src="//article/node_modules/core-js/client/shim.min.js"></script>  <script src="//article/node_modules/zone.js/dist/zone.js"></script>  <script src="//article/node_modules/reflect-metadata/Reflect.js"></script>  <script src="//article/node_modules/systemjs/dist/system.src.js"></script>  <!-- 2. Configure SystemJS -->  <script src="//article/systemjs.config.js"></script>  <script>   System.import('app').catch(function(err){ console.error(err); });  </script></head><!-- 3. Display the application --><body>  <my-app>Loading...</my-app></body></html>

现在运行项目的话你仅仅能看到一个Loading，再控制台中你还能看到错误，这是因为我们还没有配置Angular。让我们前往wwwroot目录。

3.3.在项目的wwwroot目录中添加如下结构:

3.3.1搭建Angular2基础环境

•package.json

{ "name": "angular-quickstart", "version": "1.0.0", "scripts": {  "start": "tsc && concurrently \"tsc -w\" \"lite-server\" ",  "lite": "lite-server",  "postinstall": "typings install",  "tsc": "tsc",  "tsc:w": "tsc -w",  "typings": "typings" }, "licenses": [  {   "type": "MIT",   "url": "https://github.com/angular/angular.io/blob/master/LICENSE"  } ], "dependencies": {  "@angular/common": "2.0.2",  "@angular/compiler": "2.0.2",  "@angular/core": "2.0.2",  "@angular/forms": "2.0.2",  "@angular/http": "2.0.2",  "@angular/platform-browser": "2.0.2",  "@angular/platform-browser-dynamic": "2.0.2",  "@angular/router": "3.0.2",  "@angular/upgrade": "2.0.2",  "angular-in-memory-web-api": "0.1.5",  "bootstrap": "3.3.7",  "core-js": "2.4.1",  "reflect-metadata": "0.1.8",  "rxjs": "5.0.0-beta.12",  "systemjs": "0.19.39",  "zone.js": "0.6.25" }, "devDependencies": {  "concurrently": "3.0.0",  "gulp": "^3.9.1",  "lite-server": "2.2.2",  "typescript": "2.0.3",  "typings": "1.4.0" }}

•systemjs.config.js

(function (global) {  System.config({    paths: {      // paths serve as alias      'npm:': 'node_modules/'    },    // map tells the System loader where to look for things    map: {      // our app is within the app folder      app: 'app',      // angular bundles      '@angular/core': 'npm:@angular/core/bundles/core.umd.js',      '@angular/common': 'npm:@angular/common/bundles/common.umd.js',      '@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',      '@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',      '@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',      '@angular/http': 'npm:@angular/http/bundles/http.umd.js',      '@angular/router': 'npm:@angular/router/bundles/router.umd.js',      '@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',      '@angular/upgrade': 'npm:@angular/upgrade/bundles/upgrade.umd.js',      // other libraries      'rxjs': 'npm:rxjs',      'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js'    },    // packages tells the System loader how to load when no filename and/or no extension    packages: {      app: {        main: './main.js',        defaultExtension: 'js'      },      rxjs: {        defaultExtension: 'js'      }    }  });})(this);

•tsconfig.js

{ "compileOnSave": true, "compilerOptions": {  "target": "es5",  "module": "commonjs",  "moduleResolution": "node",  "sourceMap": true,  "emitDecoratorMetadata": true,  "experimentalDecorators": true,  "removeComments": false,  "noImplicitAny": false }, "exclude": [  "node_modules" ]}

•typings.json(注，在最新文档中typings已被npm的@types替代，参见官方文档:文档变更日志)

{ "globalDependencies": {  "core-js": "registry:dt/core-js#0.0.0+20160725163759",  "jasmine": "registry:dt/jasmine#2.2.0+20160621224255",  "node": "registry:dt/node#6.0.0+20160909174046" }}

右击wwwroot中的Package.json,选择Restore Packages（或者在CMD下进入wwwroot目录，并执行命令 npm install）,npm会去下载需要的包,并存储于node_modules目录中。

3.3.2.配置启动文件以启用Angular2

在wwwroot下新建目录app,app拥有如下文件：

•app.component.ts

import { Component } from '@angular/core';@Component({  moduleId: module.id,  selector: 'my-app',  template: "this is in angular2",})export class AppComponent {}

可以发现被@Component装饰属性装饰了AppComponent，selector指代你Component的占位符，比如本例中你可以再Home/index.cshtml中发现一段这样的标记

<my-app>Loading...</my-app>

template既为该Component的View，不要忘记moduleId，不添加它会出现很多奇怪的问题。

•app.module.ts

import { NgModule } from "@angular/core";import { BrowserModule } from "@angular/platform-browser";import { AppComponent } from "./app.component";@NgModule({  bootstrap: [AppComponent],  imports: [    BrowserModule  ],  declarations: [    AppComponent  ]})export class AppModule { }

•main.ts

import { platformBrowserDynamic } from '@angular/platform-browser-dynamic';import { AppModule } from './app.module';const platform = platformBrowserDynamic();platform.bootstrapModule(AppModule);

基础整合完毕。

按F5 Debug一下，现在你能再浏览器中看到一句话：this is in angular 2

4.实现身份认证

废了半天劲，看着很傻，没有任何成就感。怎么办，让我们再深入一点，接下来我们来为Angular2完成一个Token base的身份验证，我会把Angular2的routing,data bind,service,http,等等你工作中最常用到的挨个演示一遍。

4.1.Server端

4.1.1.创建一些辅助类

4.1.1.1.在项目根目录下创建一个文件夹Auth,并添加RSAKeyHelper.cs以及TokenAuthOption.cs两个文件

•在RSAKeyHelper.cs中

using System.Security.Cryptography;namespace CSTokenBaseAuth.Auth{  public class RSAKeyHelper  {    public static RSAParameters GenerateKey()    {      using (var key = new RSACryptoServiceProvider(2048))      {        return key.ExportParameters(true);      }    }  }}

•在TokenAuthOption.cs中

using System;using Microsoft.IdentityModel.Tokens;namespace CSTokenBaseAuth.Auth{  public class TokenAuthOption  {    public static string Audience { get; } = "ExampleAudience";    public static string Issuer { get; } = "ExampleIssuer";    public static RsaSecurityKey Key { get; } = new RsaSecurityKey(RSAKeyHelper.GenerateKey());    public static SigningCredentials SigningCredentials { get; } = new SigningCredentials(Key, SecurityAlgorithms.RsaSha256Signature);    public static TimeSpan ExpiresSpan { get; } = TimeSpan.FromMinutes(20);  }}

4.1.1.2.在项目根目录下创建目录Model,并在其中添加RequestResult.cs，代码应该是这样。

public class RequestResult{  public RequestState State { get; set; }  public string Msg { get; set; }  public Object Data { get; set; }}public enum RequestState{  Failed = -1,  NotAuth = 0,  Success = 1}

4.1.2更新Startup.cs

在ConfigureServices中添加如下代码：

services.AddAuthorization(auth =>{  auth.AddPolicy("Bearer", new AuthorizationPolicyBuilder()    .AddAuthenticationSchemes(JwtBearerDefaults.AuthenticationScheme‌)    .RequireAuthenticatedUser().Build());});

这里是添加身份认证服务

在Configure方法中添加如下代码：

app.UseExceptionHandler(appBuilder =>{  appBuilder.Use(async (context, next) =>  {    var error = context.Features[typeof(IExceptionHandlerFeature)] as IExceptionHandlerFeature;    //when authorization has failed, should retrun a json message to client    if (error != null && error.Error is SecurityTokenExpiredException)    {      context.Response.StatusCode = 401;      context.Response.ContentType = "application/json";      await context.Response.WriteAsync(JsonConvert.SerializeObject(new RequestResult      {        State = RequestState.NotAuth,        Msg = "token expired"      }));    }    //when orther error, retrun a error message json to client    else if (error != null && error.Error != null)    {      context.Response.StatusCode = 500;      context.Response.ContentType = "application/json";      await context.Response.WriteAsync(JsonConvert.SerializeObject(new RequestResult      {        State = RequestState.Failed,        Msg = error.Error.Message      }));    }    //when no error, do next.    else await next();  });});

本段是Handle当身份认证失败时抛出的异常，并返回合适的json

在相同的方法中添加另外一段代码：

app.UseJwtBearerAuthentication(new JwtBearerOptions(){  TokenValidationParameters = new TokenValidationParameters()  {    IssuerSigningKey = TokenAuthOption.Key,    ValidAudience = TokenAuthOption.Audience,    ValidIssuer = TokenAuthOption.Issuer,    // When receiving a token, check that we've signed it.    ValidateIssuerSigningKey = true,    // When receiving a token, check that it is still valid.    ValidateLifetime = true,    // This defines the maximum allowable clock skew - i.e. provides a tolerance on the token expiry time     // when validating the lifetime. As we're creating the tokens locally and validating them on the same      // machines which should have synchronised time, this can be set to zero. Where external tokens are    // used, some leeway here could be useful.    ClockSkew = TimeSpan.FromMinutes(0)  }});

本段代码是应用JWTBearerAuthentication身份认证。

4.1.3.TokenAuthController.cs

在Controllers中新建一个Web API Controller Class，命名为TokenAuthController.cs。我们将在这里完成登录授权，

在同文件下添加两个类，分别用来模拟用户模型，以及用户存储，代码应该是这样:

public class User{  public Guid ID { get; set; }  public string Username { get; set; }  public string Password { get; set; }}public static class UserStorage{  public static List<User> Users { get; set; } = new List<User> {    new User {ID=Guid.NewGuid(),Username="user1",Password = "user1psd" },    new User {ID=Guid.NewGuid(),Username="user2",Password = "user2psd" },    new User {ID=Guid.NewGuid(),Username="user3",Password = "user3psd" }  };}

接下来在TokenAuthController.cs中添加如下方法

private string GenerateToken(User user, DateTime expires){  var handler = new JwtSecurityTokenHandler();    ClaimsIdentity identity = new ClaimsIdentity(    new GenericIdentity(user.Username, "TokenAuth"),    new[] {      new Claim("ID", user.ID.ToString())    }  );  var securityToken = handler.CreateToken(new SecurityTokenDescriptor  {    Issuer = TokenAuthOption.Issuer,    Audience = TokenAuthOption.Audience,    SigningCredentials = TokenAuthOption.SigningCredentials,    Subject = identity,    Expires = expires  });  return handler.WriteToken(securityToken);}

该方法仅仅只是生成一个Auth Token,接下来我们来添加另外一个方法来调用它

在相同文件中添加如下代码

[HttpPost]public string GetAuthToken(User user){  var existUser = UserStorage.Users.FirstOrDefault(u => u.Username == user.Username && u.Password == user.Password);  if (existUser != null)  {    var requestAt = DateTime.Now;    var expiresIn = requestAt + TokenAuthOption.ExpiresSpan;    var token = GenerateToken(existUser, expiresIn);    return JsonConvert.SerializeObject(new {      stateCode = 1,      requertAt = requestAt,      expiresIn = TokenAuthOption.ExpiresSpan.TotalSeconds,      accessToken = token    });  }  else  {    return JsonConvert.SerializeObject(new { stateCode = -1, errors = "Username or password is invalid" });  }}

接下来我们来完成授权部分，在相同的文件中添加如下代码：

public string GetUserInfo(){  var claimsIdentity = User.Identity as ClaimsIdentity;  return JsonConvert.SerializeObject(new RequestResult  {    State = RequestState.Success,    Data = new    {      UserName = claimsIdentity.Name    }  });}

为方法添加装饰属性

[HttpGet]

[Authorize("Bearer")]

第二行代码说明这个action需要身份验证。

该文件完整的代码应该是这个样子：

using System;using System.Collections.Generic;using System.Linq;using Microsoft.AspNetCore.Mvc;using CSAuthorAngular2InASPNetCore.Auth;using System.IdentityModel.Tokens.Jwt;using Newtonsoft.Json;using System.Security.Claims;using System.Security.Principal;using Microsoft.IdentityModel.Tokens;using CSAuthorAngular2InASPNetCore.Model;using Microsoft.AspNetCore.Authorization;namespace CSAuthorAngular2InASPNetCore.Controllers{  [Route("api/[controller]")]  public class TokenAuthController : Controller  {    [HttpPost]    public string GetAuthToken([FromBody]User user)    {      var existUser = UserStorage.Users.FirstOrDefault(u => u.Username == user.Username && u.Password == user.Password);      if (existUser != null)      {        var requestAt = DateTime.Now;        var expiresIn = requestAt + TokenAuthOption.ExpiresSpan;        var token = GenerateToken(existUser, expiresIn);        return JsonConvert.SerializeObject(new RequestResult        {          State = RequestState.Success,          Data = new          {            requertAt = requestAt,            expiresIn = TokenAuthOption.ExpiresSpan.TotalSeconds,            tokeyType = TokenAuthOption.TokenType,            accessToken = token          }        });      }      else      {        return JsonConvert.SerializeObject(new RequestResult        {          State = RequestState.Failed,          Msg = "Username or password is invalid"        });      }    }    private string GenerateToken(User user, DateTime expires)    {      var handler = new JwtSecurityTokenHandler();      ClaimsIdentity identity = new ClaimsIdentity(        new GenericIdentity(user.Username, "TokenAuth"),        new[] {          new Claim("ID", user.ID.ToString())        }      );      var securityToken = handler.CreateToken(new SecurityTokenDescriptor      {        Issuer = TokenAuthOption.Issuer,        Audience = TokenAuthOption.Audience,        SigningCredentials = TokenAuthOption.SigningCredentials,        Subject = identity,        Expires = expires      });      return handler.WriteToken(securityToken);    }    [HttpGet]    [Authorize("Bearer")]    public string GetUserInfo()    {      var claimsIdentity = User.Identity as ClaimsIdentity;      return JsonConvert.SerializeObject(new RequestResult      {        State = RequestState.Success,        Data = new        {          UserName = claimsIdentity.Name        }      });    }  }  public class User  {    public Guid ID { get; set; }    public string Username { get; set; }    public string Password { get; set; }  }  public static class UserStorage  {    public static List<User> Users { get; set; } = new List<User> {      new User {ID=Guid.NewGuid(),Username="user1",Password = "user1psd" },      new User {ID=Guid.NewGuid(),Username="user2",Password = "user2psd" },      new User {ID=Guid.NewGuid(),Username="user3",Password = "user3psd" }    };  }}

4.2Angular2端

4.2.1创建View Model

在wwwroot/app下创建一个目录：_model，并添加一个Typescript文件RequestResult.ts，内容应该是这样。

export class RequestResult {  State: number;  Msg: string;  Data: Object;}

4.2.2创建Service

在wwwroot/app下创建一个目录：_services，并添加一个Typescript文件auth.service.ts，内容应该是这样。

import { Injectable } from "@angular/core";import { Headers, Http } from "@angular/http";import "rxjs/add/operator/toPromise";import { RequestResult } from "../_model/RequestResult";@Injectable()export class AuthService {  private tokeyKey = "token";  private token: string;  constructor(    private http: Http  ) { }  login(userName: string, password: string): Promise<RequestResult> {    return this.http.post("/api/TokenAuth", { Username: userName, Password: password }).toPromise()      .then(response => {        let result = response.json() as RequestResult;        if (result.State == 1) {          let json = result.Data as any;          sessionStorage.setItem("token", json.accessToken);        }        return result;      })      .catch(this.handleError);  }  checkLogin(): boolean {    var token = sessionStorage.getItem(this.tokeyKey);    return token != null;  }  getUserInfo(): Promise<RequestResult> {    return this.authGet("/api/TokenAuth");  }  authPost(url: string, body: any): Promise<RequestResult> {    let headers = this.initAuthHeaders();    return this.http.post(url, body, { headers: headers }).toPromise()      .then(response => response.json() as RequestResult)      .catch(this.handleError);  }  authGet(url): Promise<RequestResult> {    let headers = this.initAuthHeaders();    return this.http.get(url, { headers: headers }).toPromise()      .then(response => response.json() as RequestResult)      .catch(this.handleError);  }  private getLocalToken(): string {    if (!this.token) {      this.token = sessionStorage.getItem(this.tokeyKey);    }    return this.token;  }  private initAuthHeaders(): Headers {    let token = this.getLocalToken();    if (token == null) throw "No token";    var headers = new Headers();    headers.append("Authorization", "Bearer " + token);    return headers;  }  private handleError(error: any): Promise<any> {    console.error('An error occurred', error);    return Promise.reject(error.message || error);  }}

本文件主要用来完成登录以及登录验证工作，之后该service将可以被注入到Component中以便被Component调用。

注：主要的逻辑都应该写到service中

4.2.3.创建Component

4.2.3.1.在wwwroot/app下创建一个目录home,该目录用来存放HomeComponent,home应拥有如下文件：

•home.component.ts

import { Component, OnInit } from "@angular/core";import { AuthService } from "../_services/auth.service";@Component({  moduleId: module.id,  selector: "my-home",  templateUrl: "view.html",  styleUrls: ["style.css"]})export class HomeComponent implements OnInit {  isLogin = false;  userName: string;    constructor(    private authService: AuthService  ) { }  ngOnInit(): void {    this.isLogin = this.authService.checkLogin();    if (this.isLogin) {      this.authService.getUserInfo().then(res => {        this.userName = (res.Data as any).UserName;      });    }  }}

查阅代码，在@Component中指定了View以及style。

AuthService被在构造方法中被注入了本Component，ngOnInit是接口OnInit的一个方法，他在Component初始化时会被调用。

•style.css

/*styles of this view*/

本例中没有添加任何样式，如有需要可以写在这里。

•view.html

<div *ngIf="isLogin">  <h1>Hi <span>{{userName}}</span></h1></div><div *ngIf="!isLogin">  <h1>please login</h1>  <a routerLink="/login">Login</a></div>

*ngIf=""是Angular2 的其中一种标记语法，作用是当返回真时渲染该节点，完整教程请参阅官方文档。

4.2.3.2.在wwwroot/app下创建目录Login,该目录用来存放LoginComponent,文件结构类似于上一节。

•login.component.ts

import { Component } from "@angular/core";import { Router } from '@angular/router';import { AuthService } from "../_services/auth.service";@Component({  moduleId: module.id,  selector: "my-login",  templateUrl: "view.html",  styleUrls: ["style.css"]})export class LoginComponent {  private userName: string;  private password: string;  constructor(    private authService: AuthService,    private router: Router  ) { }  login() {    this.authService.login(this.userName, this.password)      .then(result => {        if (result.State == 1) {          this.router.navigate(["./home"]);        }        else {          alert(result.Msg);        }      });  }}

•style.css

/*styles of this view*/

•view.html

<table>  <tr>    <td>userName:</td>    <td><input [(ngModel)]="userName" placeholder="useName:try type user1" /></td>  </tr>  <tr>    <td>userName:</td>    <td><input [(ngModel)]="password" placeholder="password:try type user1psd" /></td>  </tr>  <tr>    <td></td>    <td><input type="button" (click)="login()" value="Login" /></td>  </tr></table>

4.2.4.应用路由

路由是切换多页面用的。

在wwwroot/app下新建一个Typescript文件，命名为app-routing.module.ts，内容应该是这个样子。

import { NgModule } from "@angular/core";import { RouterModule, Routes } from "@angular/router";import { HomeComponent } from "./home/home.component";import { LoginComponent } from "./login/login.component"const routes: Routes = [  { path: "", redirectTo: "/home", pathMatch: "full" },  { path: "home", component: HomeComponent },  { path: "login", component: LoginComponent }];@NgModule({  imports: [RouterModule.forRoot(routes)],  exports: [RouterModule]})export class AppRoutingModule { }

接下来我们来应用这个路由，

打开app.module.ts，更新代码如下：

import { NgModule } from "@angular/core";import { BrowserModule } from "@angular/platform-browser";import { HttpModule } from "@angular/http";import { FormsModule } from "@angular/forms";import { AppRoutingModule } from "./app-routing.module";import { AuthService } from "./_services/auth.service";import { AppComponent } from "./app.component";import { HomeComponent } from "./home/home.component";import { LoginComponent } from "./login/login.component";@NgModule({  bootstrap: [AppComponent],  imports: [    BrowserModule,    HttpModule,    AppRoutingModule,    FormsModule  ],  declarations: [    AppComponent,    HomeComponent,    LoginComponent  ],  providers: [AuthService]})export class AppModule { }

NgModule和BrowserModule你可以理解为基础模块，必加的。

HttpModule是做http请求用的。

FormsModule是做双向数据绑定用的，比如下面这样的，如果想把数据从view更新到component，就必须加这个。

<input [(ngModel)]="userName" placeholder="useName:try type user1" />

AppRoutingModule即为我们刚才添加的路由文件。

AuthService是我们最早添加的service文件。

AppComponent是我们最初添加的那个app.component.ts里的那个component.

HomeComponent,LoginComponent同上。

最后我们再app.component.ts中添加路由锚点，

把template的值为 "<router-outlet></router-outlet>"

完整的代码应该是这样：

import { Component } from '@angular/core';@Component({  moduleId: module.id,  selector: 'my-app',  template: "<router-outlet></router-outlet>",})export class AppComponent {}

router-outlet是路由锚点的关键词。

至此，所有代码完成，F5调试吧。

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。

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