java - HttpClientErrorException getResponseBodyAsString() 无法将字节解析为字符串

Question

我在从第三方服务器的 403 http 代码响应获取响应正文时遇到问题。在 2019 年 4 月 5 日之前，我能够正确从第三方获取响应正文，但现在我正在检索一个可能无法从 getResponseBodyAsString 正确转换为字符串的字节。这是 org.springframework.web.client 包的问题吗？

    @Autowired
    RestClient restClient;
    try{
    //Request via restTemplate
     ResponseEntity<String> responseEntity = restClient.makeClientRequestJson(batch_type.getEndpoint(), HttpMethod.POST, httpHeaders, batch_payload.getRequest(), ProcessorConstants.moduleId);
    } catch (HttpClientErrorException | HttpServerErrorException ex) {
                loggingService.writeLogs("Error From Third Party Request, Message: " + ex.getMessage() + "| Response Body: " + ex.getResponseBodyAsString(), this.getClass(), LoggingEnum.ERROR, BatchConstants.moduleId);
     ...

这是 makeClientRequestJson 实现:

public ResponseEntity<String> makeClientRequestJson(String url, HttpMethod httpMethod, HttpHeaders headers, String jsonBody , String moduleId){
    RestTemplate restTemplate = new RestTemplate();

    HttpEntity<String> entity = new HttpEntity<>(jsonBody, headers);
    loggingService.writeLogs("Third Party Request: " + entity.getBody() + "| url: " + url + " | method: " + httpMethod.toString(), RestClientImpl.class, LoggingEnum.INFO, moduleId);

    ResponseEntity<String> response =  restTemplate.exchange(url, httpMethod, entity, String.class);
    loggingService.writeLogs("Third Party Response: " + response.getBody() + "| url: " + url + " | method: " + httpMethod.toString(), RestClientImpl.class, LoggingEnum.INFO, moduleId);
    return response;
}

问题是当 ex.getResponseBodyAsString() 返回字节数组时，但我直接从服务器获取 json 响应，如下所示:

{
    "code": "403020",
    "transactionID": "1555495478-1409322457-83999786",
    "message": "Account is Level 1"
}

这是我在调试代码时得到的示例值:

Answer 1

更新:这是由于客户端服务器的响应 header 造成的，其响应上有一些奇怪的 header ，例如连接 -> 关闭。如果有人遇到此问题，请务必先扫描 header 响应。