在Angular中,可以使用HttpInterceptor
来处理HTTP 401错误并进行重定向。以下是一个示例代码:
首先,创建一个名为AuthInterceptor
的HTTP拦截器,它将拦截所有的HTTP请求:
import { Injectable } from '@angular/core';
import { HttpInterceptor, HttpRequest, HttpHandler, HttpEvent } from '@angular/common/http';
import { Observable } from 'rxjs';
import { tap } from 'rxjs/operators';
import { Router } from '@angular/router';
@Injectable()
export class AuthInterceptor implements HttpInterceptor {
constructor(private router: Router) {}
intercept(request: HttpRequest, next: HttpHandler): Observable> {
return next.handle(request).pipe(
tap(
event => {},
error => {
if (error.status === 401) {
// 处理HTTP 401错误并重定向到登录页面
this.router.navigate(['/login']);
}
}
)
);
}
}
然后,在模块中注册这个拦截器:
import { NgModule } from '@angular/core';
import { HttpClientModule, HTTP_INTERCEPTORS } from '@angular/common/http';
import { AuthInterceptor } from './auth.interceptor';
@NgModule({
imports: [
HttpClientModule
],
providers: [
{
provide: HTTP_INTERCEPTORS,
useClass: AuthInterceptor,
multi: true
}
]
})
export class AppModule { }
现在,每当发生HTTP 401错误时,拦截器将重定向到登录页面。你可以根据自己的需求修改重定向的目标页面。