无法触发 requestError 拦截器

Question

我想在处理请求之前检查用户的令牌是否有效，我正在使用拦截器进行此操作。

代码如下：

  request: (request: RequestMessage): any => {
    return new Promise((resolve, reject) => {
      console.log('token expires at', this.expiresAt);
      if (this.isTokenExpired()) {
        console.log('token expired');
        throw new Error("{ message: 'Session expired', statusCode: 401 }");
      }

      if (this.accessToken) {
        this.setAuthorizationHeaders(request);
      }
      resolve(request);
    });
  },
  requestError: (error): any => {
    console.log('request error', error);
    throw new Error(`yo ${error}`);
  }

然而，虽然我在控制台中看到了错误，但它似乎从未经历过 requestError。我查看了源代码中 Interceptor 方法的单元测试，但没有发现与我在这里尝试的有太大不同。我做错了什么？

编辑：添加 HttpClient 配置代码：

const request = this.httpClient
  .createRequest(url)
  .withBaseUrl(this.baseUrl)
  .withHeader('Accept', 'application/json');

// Interceptor ?
if (withInterceptor) {
  request.withInterceptor(this.interceptor);
}

// Content type
if (contentType) {
  request.withHeader('Content-Type', contentType);
}

// Params
if (params != null) {
  request.withParams(params);
}

// Data
if (data != null) {
  request.withContent(urlEncode ? UrlUtils.encodeQueryData(data) : data);
}

// Method
switch (method) {
  case 'GET':
    request.asGet();
    break;
  case 'POST':
    request.asPost();
    break;
  case 'PUT':
    request.asPut();
    break;
  case 'DELETE':
    request.asDelete();
    break;
}

Answer 1

以下内容来自官方文档：

requestError acts as a Promise rejection handler during Request creation and request interceptor execution. It will receive the rejection reason, and can either re-throw, or recover by returning a valid Request.

您可以看到，当且仅当在创建请求期间出现错误时，您才输入 requestError：格式错误 headers、无效配置等

您在这个问题中提出的用法是完全有效的，因此 requestError 启动时不会抛出任何错误。

无法触发 requestError 拦截器

Cannot trigger requestError interceptor

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