Question

我已实施HttpInterceptor，为每个请求添加标头，并在服务器使用401回复时重定向到登录页面。我不希望它做任何其他事情。

然而，我注意到每当我从服务器得到错误的响应时（正如我所料），拦截器就会踢它并抛出HttpErrorResponse。但是在我的控制器中，我只得到一个TypeError对象而没有来自服务器的详细信息。

我附上相关代码。

拦截

@Injectable()
export class HttpAuthorizationService implements HttpInterceptor {

  constructor(private cookieService: CookieService, private angularRouter: Router) { }

  intercept(req: HttpRequest<any>, next: HttpHandler):  Observable<HttpEvent<any>> {
    req = req.clone({
      setHeaders: {
        Authorization: 'Bearer ' + this.cookieService.get('Authorization')
      }
    });

    return next.handle(req).do((ev: HttpEvent<any>) => {})
    .catch(error => {
      if (error instanceof HttpErrorResponse) {
        if (error.status === 401) {
          this.cookieService.set('expired', 'Session expired');
          this.angularRouter.navigate(['/login']);
        }
      }
      return Observable.throw(error); <-- i think this is bad
    });
  }
}

和实际控制器

deleteCategory(category) {
this.confirmationService.confirm({
  message: 'Are you sure you want to delete?',
  header: 'Delete product category ' + category,
  icon: 'fa fa-trash',
  accept: () => {
    this.productService.deleteCategory(category).subscribe(
      success => {
        this.msgs = [{ severity: 'success', summary: 'Success', detail: 'Successfully deleted the product category ' + category }];
      },
      error => {
        this.categories.push(category);
        this.msgs = [{ severity: 'error', summary: 'Could not delete category', detail: error.status + '-' + error.error }]; <-- getting object without error attribute and no info from the server
      }
    );
  },
  reject: () => this.categories.push(category)
});

}

我的问题是如何保留原始错误对象而不是实际获得的内容如果我没有实现这个HttpInterceptor比我的控制器获得正常的错误对象

Answer 1

我不得不在我的HttpInterceptor实现中添加另一个导入

{
  "rules": {
    ".read": true,
    "room": {
      "$roomID": {
        "ready":{
            ".write": "data.parent().child('creatorUid').val() == auth.uid"
        }
      }
    }
  }
}

Angular HttpInterceptor修改错误对象

1 个答案: