GetBody（）在响应代码为401时抛出ResourceAccessException

Question

RestTemplate restTemplate = new RestTemplate();

// Added this requestFactory to make response object readable more than once.
ClientHttpRequestFactory requestFactory =
        new BufferingClientHttpRequestFactory(new SimpleClientHttpRequestFactory());
restTemplate.setRequestFactory(requestFactory);
restTemplate.getInterceptors().add(new RequestLoggingInterceptor(vCloudRequest.getAction(),httpHeaders));
    restTemplate.setErrorHandler(new RequestErrorHandler());

return restTemplate;

我怎样才能解决这个问题？

org.springframework.web.client.resourceAccessException：对“https://example.com/api/sessions”的POST请求的I/O错误：服务器返回HTTP响应代码：401（URL：https://example.com/api/sessions）；嵌套异常是java.io.ioException：服务器返回的HTTP响应代码：401用于URL:https://example.com.11/api/sessions

这是拦截器的相关部分。

@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
    ClientHttpResponse response = execution.execute(request, body);

    String requestString = new String(body);

    // Calling this method because when we make a POST or PUT request and get an error
    // response.getBody() throws IOException. But if we call response.getStatusCode() it works fine.
    // I don't know the reason.
    // I asked a question on stackoverflow
    // https://stackoverflow.com/questions/47429978/resttemplate-response-getbody-throws-exception-on-4-and-5-errors-for-put-and
    response.getStatusCode();
    String responseString = new String(ByteStreams.toByteArray(response.getBody()), Charset.forName("UTF-8"));
...
}

这是自定义错误处理程序

公共类RequestErrorHandler实现ResponseErrorHandler{

@Override
public boolean hasError(ClientHttpResponse response) throws IOException {
        if (!response.getStatusCode().is2xxSuccessful()) {
        return true;
    }
    return false;
}

@Override
public void handleError(ClientHttpResponse response) throws IOException {
    JAXBElement<ErrorType> root = null;

    try {
        JAXBContext jaxbContext = JAXBContext.newInstance(ErrorType.class);
        Unmarshaller jaxbUnmarshaller = jaxbContext.createUnmarshaller();

        root = jaxbUnmarshaller.unmarshal(new StreamSource(
                response.getBody()), ErrorType.class);
    } catch (JAXBException e) {
        throw new IOException("XML converting error. Cannot convert response to ErrorType");
    }

    ErrorType error = root.getValue();
    throw new VcloudException(error);
}
}

Answer 1

使用HttpComponentSclientHttpPrequestFactory而不是SimpleClientHttpPrequestFactory。

还将依赖项添加到'org.apache.httpcomponents:HttpClient。

当状态为401时，HttpComponentSclientHttpPrequestFactory ccan读取正文。