Question

NestJS API应用程序使用HttpService调用另一个API，并且在不使用自定义拦截器的情况下可以正常工作。 HttpService API调用已执行，但未到达另一个API并且看不到响应。

这是获取呼叫代码

"start rating html"

如果使用任何自定义拦截器，则在调试时会发现以下内容。


 get(path: string, body: any = {}): Observable<AxiosResponse<any>> {
    console.log('DomainAPI Response Begining');
    const url = this.baseURL + path;
    this.updateLastUtilizedTimestamp();
    return this.httpService.get(url, { validateStatus: null }).pipe(
      tap(data => {
        console.log('DomainAPI Response Tap', data);
      }),
      retryWhen(
        this.rxJSUtilsService.genericRetryStrategy({
          numberOfAttempts: 3,
          delayTime: 200,
          ignoredErrorCodes: [500],
        }),
      ),
      catchError(this.formatErrors),
    );
  }

邮递员显示以下答复。

arguments:TypeError: 'caller', 'callee', and 'arguments' properties may not be accessed on strict mode functions or the arguments objects for calls to them

我如下更改了上述内容，但仍然无法正常工作

{
    "statusCode": 500,
    "message": {
        "Title": "TypeError",
        "Type": "Error",
        "Detail": "Converting circular structure to JSON\n    --> starting at object with constructor 'Observable'\n    |     property 'operator' -> object with constructor 'CatchOperator'\n    --- property 'caught' closes the circle",
        "Status": "Status",
        "Extension": ""
    },
    "timestamp": "Exception - AllExceptionsFilter 2019-12-26T17:29:42.447Z"
}

在邮递员中给出以下答复


get(path: string, body: any = {}) {
    console.log('DomainAPI Response Begining');
    const url = this.baseURL + path;
    this.updateLastUtilizedTimestamp();
    return this.httpService.get(url, { validateStatus: null }).pipe(
      map(response => {
        console.log('DomainAPI Response Tap', response.data);
        return response.data;
      }),
    );
  }

请告知

Answer 1

async get(path: string, body: any = {}): Promise<any> {
    ...
    const res = await this.httpService.get(url, { validateStatus: null }).toPromise();

    return res.data;
  }

Answer 2

get(path: string, body: any = {}) {
   ...
    return this.httpService.get(url, { validateStatus: null })
    .toPromise()
    .then(res => res.data)
    .catch(err => this.logger.error(err));
  }

使用拦截器时，NestJS HttpService所有方法API调用均无法正常工作

2 个答案: