在我的Web Angular项目中，我创建了AuthenticationGuard和AuthenticationService来处理安全性。
这些文件来自我项目的另一个分支，该分支可以正常工作。
这是我的脚本的工作方式：
我的问题是当AuthGuard访问AuthService时：AuthService总是返回false。
认证卫士
import { Injectable } from '@angular/core';
import { CanActivate, Router, ActivatedRouteSnapshot,RouterStateSnapshot } from '@angular/router';
import { AuthService } from './auth.service';
@Injectable()
export class AuthGuard implements CanActivate {
constructor(private authService: AuthService, private router: Router) {}
canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): boolean {
let url: string = state.url;
return this.checkLogin(url);
}
checkLogin(url: string): boolean {
if (this.authService.getIsLoggedIn()) {
return true;
}
// Store the attempted URL for redirecting
this.authService.redirectUrl = url;
// Navigate to the login page with extras
this.router.navigate(['/auth/login']);
return false;
}
}身份验证服务
import { Injectable } from '@angular/core';
import { Router } from '@angular/router';
import { Observable } from 'rxjs/Observable';
import 'rxjs/add/observable/of';
import 'rxjs/add/operator/do';
import 'rxjs/add/operator/delay';
import { config } from './../shared/smartadmin.config';
import { Http, Headers, RequestOptions, Response } from '@angular/http';
import 'rxjs/add/operator/map'
@Injectable()
export class AuthService {
private isLoggedIn: boolean = false;
public redirectUrl: string;
constructor(private router: Router, private http: Http) {
}
public getIsLoggedIn(): boolean {
console.log("getIsLoggedIn() = " + this.isLoggedIn); // Always returns false
return this.isLoggedIn;
}
public login(username: string, password: string) {
this.ProcessLogin(username, password)
.subscribe(result => {
if (result === true) {
console.log("before attribution");
console.log("this.isLoggedIn = " + this.isLoggedIn); // returns false
this.isLoggedIn = true;
console.log("after attribution");
console.log("this.isLoggedIn = " + this.isLoggedIn); // returns true
this.router.navigate(this.redirectUrl ? [this.redirectUrl] : ['/home']);
} else {
this.logout();
}
});
}
public logout(): void {
localStorage.removeItem('oAuthToken');
this.isLoggedIn = false;
}
private ProcessLogin(username: string, password: string): Observable<boolean> {
let headers = new Headers({ 'Content-Type': 'application/x-www-form-urlencoded' });
let options = new RequestOptions({ headers: headers });
let body = 'grant_type=password&username=' + encodeURIComponent(username) + '&password=' + encodeURIComponent(password);
let endpoint = config.API_ENDPOINT + 'token';
return this.http.post(endpoint, body, options)
.map((response: Response) => {
// login successful if there's a jwt token in the response
let token = response.json() && response.json().access_token;
if (token) {
localStorage.setItem('oAuthToken', token);
// return true to indicate successful login
return true;
} else {
localStorage.removeItem('oAuthToken');
// return false to indicate failed login
return false;
}
});
}
}在没有看到模块定义的情况下，我怀疑您没有将AuthService用作核心服务（单例），这意味着使用它的每个模块都将具有自己的实例（跟踪自己的isLoggedIn标志）。
为了使服务单角度，它必须由根模块注入器提供服务。为此，您需要执行以下操作：
import { NgModulep } from '@angular/core';
import { CommonModule, ModuleWithProviders } from '@angular/common';
import { AuthService, AuthGuard } from './services/index';
@NgModule({
imports: [
CommonModule,
ModuleWithProviders
]
})
export class SharedModule {
static forRoot(): ModuleWithProviders {
return {
ngModule: SharedModule,
providers: [
AuthService,
AuthGuard
]
};
}
}
然后，在将SharedModule导入根AppModule时，调用forRoot方法。
@NgModule({
imports: [
...
SharedModule.forRoot(),
...
],
...,
bootstrap: [AppComponent]
})
export class AppModule { }
在这里https://angular.io/docs/ts/latest/guide/ngmodule.html#!#core-for-root看一下“配置核心服务”
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