解决RestTemplate 请求接收自定义400+ 或500+错误

protected void handleResponse(URI url, HttpMethod method, ClientHttpResponse response) throws IOException {
  ResponseErrorHandler errorHandler = getErrorHandler();
  boolean hasError = errorHandler.hasError(response);
  if (logger.isDebugEnabled()) {
   try {
    logger.debug(method.name() + " request for \"" + url + "\" resulted in " +
      response.getRawStatusCode() + " (" + response.getStatusText() + ")" +
      (hasError ? "; invoking error handler" : ""));
   }
   catch (IOException ex) {
    // ignore
   }
  }
  if (hasError) {
   errorHandler.handleError(response);
  }
 }

@Override
 public void handleError(ClientHttpResponse response) throws IOException {
  HttpStatus statusCode = getHttpStatusCode(response);
  switch (statusCode.series()) {
   case CLIENT_ERROR:
    throw new HttpClientErrorException(statusCode, response.getStatusText(),
      response.getHeaders(), getResponseBody(response), getCharset(response));
   case SERVER_ERROR:
    throw new HttpServerErrorException(statusCode, response.getStatusText(),
      response.getHeaders(), getResponseBody(response), getCharset(response));
   default:
    throw new RestClientException("Unknown status code [" + statusCode + "]");
  }
 }

public class FacePlusThrowErrorHandler implements ResponseErrorHandler {
    @Override
    public boolean hasError(ClientHttpResponse response) throws IOException {
        return false;
    }
    @Override
    public void handleError(ClientHttpResponse response) throws IOException {
    }
}

 @Bean
    public RestTemplate facePlusRestTemplate() {
        HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
        requestFactory.setConnectTimeout(300000);
        requestFactory.setReadTimeout(300000);
        RestTemplate restTemplate = new RestTemplate(requestFactory);
        restTemplate.getMessageConverters().set(1, new StringHttpMessageConverter(StandardCharsets.UTF_8));
        restTemplate.getMessageConverters().add(new FormHttpMessageConverter());
        restTemplate.setErrorHandler(new FacePlusThrowErrorHandler());
        return restTemplate;
    }

@Resource(name = "facePlusRestTemplate")
private RestTemplate restTemplate;

@Configuration
public class CustomResponseErrorHandler implements ResponseErrorHandler {
    @Override
    public boolean hasError(ClientHttpResponse clientHttpResponse) throws IOException {
        return false;
    }
    @Override
    public void handleError(ClientHttpResponse clientHttpResponse) throws IOException {
    }
    @Bean("customRestTemplate")
    public RestTemplate customRestTemplate() {
        HttpComponentsClientHttpRequestFactory requestFactory = new HttpComponentsClientHttpRequestFactory();
        requestFactory.setConnectTimeout(300000);
        requestFactory.setReadTimeout(300000);
        RestTemplate restTemplate = new RestTemplate(requestFactory);
        restTemplate.getMessageConverters().set(1, new StringHttpMessageConverter(StandardCharsets.UTF_8));
        restTemplate.getMessageConverters().add(new FormHttpMessageConverter());
        restTemplate.setErrorHandler(new CustomResponseErrorHandler());
        return restTemplate;
    }
}

<!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
<dependency>
    <groupId>org.apache.httpcomponents</groupId>
    <artifactId>httpclient</artifactId>
    <version>4.5.5</version>
</dependency>

@Resource(name = "customRestTemplate")
private RestTemplate restTemplate;