高并发下restTemplate的错误分析方式

public RestTemplate restTemplate() {
    HttpComponentsClientHttpRequestFactory httpRequestFactory = new HttpComponentsClientHttpRequestFactory(HttpClientBuilder.create()
      .setMaxConnTotal(20)
      .setMaxConnPerRoute(20)
      .build());
    httpRequestFactory.setConnectionRequestTimeout(10000);
    httpRequestFactory.setConnectTimeout(10000);
    httpRequestFactory.setReadTimeout(10000);
    return new RestTemplate(httpRequestFactory);
   }

 MultiValueMap<String, String> params = new LinkedMultiValueMap<>();
        params.add("clientId",ZHEJIANG_CLIENT_ID );
        params.add("nonce", uuid);                      //随机数
        params.add("timestamp", dateString);             //时间戳
        params.add("signature", signature);           //签名
        HttpHeaders headers = new HttpHeaders();
        headers.setContentType(MediaType.MULTIPART_FORM_DATA);
        HttpEntity<MultiValueMap<String, String>> requestEntity = new HttpEntity<>(params, headers);
        
        RestTemplate restTemplate = new RestTemplate();
        SafetyResponseType safetyResponseType = restTemplate.postForObject(SAFETY_CERTIFICATE_URL, requestEntity, SafetyResponseType.class );