rxjs__WEBPACK_IMPORTED_MODULE_3__.Observable.throw 不是函数 [英] rxjs__WEBPACK_IMPORTED_MODULE_3__.Observable.throw is not a function at

问题描述

我需要做休息操作和捕捉错误，我这样做:

I need to do rest operation adn catch erro and I do this:

import { Injectable,  } from '@angular/core';
import { Http, Response,Headers} from '@angular/http';

import { map} from 'rxjs/operators';
import { catchError } from 'rxjs/operators';
import { Observable} from 'rxjs';


@Injectable()
export class RESTSERCIVE{

 getObject(id: number){
    return this.http.get(this.url+"/"+id).pipe(map(
      (response: Response)=>{return response.json()},
      ),
      catchError(this.handleErrorObservable)
      );
  }
 handleErrorObservable (error: Response | any) 
  {   
      return Observable.throw(error.message || error);
  }
}

我不明白为什么它会给我这个错误.任何人都可以帮助我吗?

I don't why it give me this error. Anyone can help me?

推荐答案

因为你使用的是 Angular 6 和 RxJS 6，抛出错误的语法已经改变.

Because you are using Angular 6 and RxJS 6, the syntax for throwing erros has changed.

改为这样做，

import { throwError } from 'rxjs';

throwError(error.message || error);

同样在 RxjS 6 中，您不需要显式地将响应转换为 JSON.它是自动完成的.因此，您可以从代码中删除地图.

Also in RxjS 6, you don't need to convert the response into JSON explicitly. It is done automatically. So you can remove the map from your code.

希望这会有所帮助.

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