Java HttpClientErrorException:401未经授权的基本身份验证

我正在尝试使用基本身份验证获取url。我设置用户/密码如下所示。同样的凭证在邮递员中工作

String RELATIVE_IDENTITY_URL  = "http://my_url/api/core/v3/people/email/abc@example.com";
    RestTemplate restTemplate;
    Credentials credentials;

    //1. Set credentials
    credentials = new UsernamePasswordCredentials("admin", "admin");

    CredentialsProvider credsProvider = new BasicCredentialsProvider();
    credsProvider.setCredentials( AuthScope.ANY, credentials);

    //2. Bind credentialsProvider to httpClient
    HttpClientBuilder httpClientBuilder = HttpClientBuilder.create();
    httpClientBuilder.setDefaultCredentialsProvider(credsProvider);
    CloseableHttpClient httpClient = httpClientBuilder.build();

    HttpComponentsClientHttpRequestFactory factory = new  
            HttpComponentsClientHttpRequestFactory(httpClient);

    //3. create restTemplate
    restTemplate = new RestTemplate();
    restTemplate.setRequestFactory(factory);

    //4. restTemplate execute
    String url = RELATIVE_IDENTITY_URL;

    String xml = restTemplate.getForObject(url,String.class); 
    System.out.println("Done");

我认为凭证设置不正确。这里怎么了。？ 错误：

---

您在rest模板执行中缺少auth标头和设置凭据。

您在rest模板执行中缺少auth标头和设置凭据。

当您发出请求时，您如何附加凭据和设置auth标头？@MikeTung:我刚才没有添加这一点。我真的认为这将是从上面的设置凭据部分。当我通过标题设置它时，它就工作了。非常感谢当你提出请求时，你是如何附加凭据的？你是在设置身份验证头吗？@MikeTung:我刚刚错过了添加。我真的认为这将是从上面的设置凭据部分。当我通过标题设置它时，它就工作了。多谢

Exception in thread "main" org.springframework.web.client.HttpClientErrorException: 401 Unauthorized
    at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:91)
    at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:667)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:620)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:580)
    at org.springframework.web.client.RestTemplate.getForObject(RestTemplate.java:287)
    at com.src.AuthRestService.main(AuthRestService.java:85)