Question

我最近移到了角度5，更早的时候http.post返回带有标头的响应对象，但是使用httpclient，它不返回响应标头。我如何更改这部分邮政编码以提供包括响应标头的完整响应对象

我读到有关使用{observable：“ response”}的信息，但是它不起作用

post(inURL,  data, config = undefined)  {
  let headers, options;
  if (config) {
    options = config;
  } else {
    //headers = this.getDefaultHeader();
    //options = new RequestOptions({ headers: headers });
    options = httpOptions;
  }

  let action = this.httpService.post(inURL,  data, options);
  return new Promise((resolve, reject) => {
    action.subscribe(
      response => resolve(response),
      error => {
        this.interceptError(error);
        reject(error);
      }
    );
  });    
}

Answer 1

我假设您有充分的理由从此处返回promise而不是Observable。

话虽如此，您正在使事情变得复杂。您可以简单地调用toPromise()的返回值上的post。

好吧，您说过您使用过{observable: "response"}，但没有用。那是因为您没有正确使用它。它应该 {observe: "response"}，并且不 {observable: "response"}

它必须是选项的一部分。因此，我使用了散布运算符（...）并将{observe: "response"}添加到options。

尝试一下：

post(inURL,  data, config = undefined)  {
  let headers, options;
  if (config) {
    options = config;
  } else {
    //headers = this.getDefaultHeader();
    //options = new RequestOptions({ headers: headers });
    options = httpOptions;
  }

  options = { ...options, observe: 'response' };

  this.httpService.post(inURL, data, options)
    .toPromise();
}

Answer 2

您可以在进行HTTP调用后仅返回HttpClient响应：

PATTERNS = [ # a list of alternative acceptable formats

    re.compile( r"""              
        ^\s*                      # beginning of string (optional whitespace)
        (?P<degrees>\d+)[\s]      # integer number of degrees (NB: might be desirable to insert the degree symbol into the square brackets here, to allow that as a possibility?)
        (?P<minutes>\d+)'         # integer number of minutes
        (?P<seconds>\d+(\.\d*)?)" # seconds, with optional decimal point and decimal places
        (?P<axis>[NE]?)           # optional 'N' or 'E' character (remove '?' to make it compulsory)
        \s*$                      # end of string (optional whitespace)
    """, re.VERBOSE ),            

    re.compile( r"""
        ^\s*                      # beginning of string (optional whitespace)
        (?P<degrees>\d+)[\s]      # integer number of degrees (NB: might be desirable to insert the degree symbol into the square brackets here, to allow that as a possibility?)
        (?P<minutes>\d+(\.\d*)?)  # minutes, with optional decimal point and decimal places
        (?P<axis>[NE]?)           # optional 'N' or 'E' character (remove this line if this is never appropriate in this format)
        \s*$                      # end of string (optional whitespace)
    """, re.VERBOSE ),            

]

在您的组件类中，您可以订阅服务方法：

getServiceData(): Observable<any>{
      return this.httpClient
        .post(myUrl, requestBodyObj)
        .map((httpResponse: any) => {
            if (httpResponse.operationStatus.statusCode === '0') {
                return httpResponse.data;
            } else {
                throw new Error('error in service call');
            }
        })

 }

有关HttpClient使用情况的更多详细信息，请参见官方指南seen here

angular 5 httpclient，在post上，响应不返回标题，仅返回响应对象

2 个答案: