Java 使用RestTemplateBuilder进行SpringBoot基本身份验证-401未经授权

我正在使用SpringBoot RestTemplateBuilder开发一个使用第三方Rest api的客户端。API需要身份验证。因此，我使用基本身份验证来传递凭据。但它返回401个未经授权的响应代码

这是我使用SpringBoot的第一个项目。我尝试过不同的方法，但结果都一样。任何能引导我朝正确方向前进的帮助都是有益的。谢谢

这是我的代码：

@SpringBootApplication
public class AysRestClientApplication {

private static final Logger log = LoggerFactory.getLogger(AysRestClientApplication.class);


    public static void main(String[] args) {
       ApplicationContext ctx = SpringApplication.run(AysRestClientApplication.class, args);
       RestClient cl = ctx.getBean(RestClient.class);
       cl.makeCall();
   }
}

///////////

@Service
public class GetChangesMClient {

private final RestTemplate restTemplate;
private final String url = "https://sample.org/restapi"; 

  public GetChangesMClient(RestTemplateBuilder restTemplateBuilder) {
    List<ClientHttpRequestInterceptor> interceptors = new ArrayList<ClientHttpRequestInterceptor>();
    interceptors.add(new HeaderRequestInterceptor("Accept", MediaType.APPLICATION_JSON_VALUE));

    this.restTemplate = restTemplateBuilder.basicAuthorization("username", "password").build();
    this.restTemplate.setInterceptors(interceptors);
}

public GetChangesMResponseTO execute(GetChangesMRequestTO request) {
    return this.restTemplate.postForObject(url, request, GetChangesMResponseTO.class); 

}

}

class HeaderRequestInterceptor implements ClientHttpRequestInterceptor {

private final String headerName;
private final String headerValue;

public HeaderRequestInterceptor(String headerName, String headerValue) {
    this.headerName = headerName;
    this.headerValue = headerValue;
    System.out.println("Setting Interceptors");
}

@Override
public ClientHttpResponse intercept(HttpRequest request, byte[] body, ClientHttpRequestExecution execution) throws IOException {
    System.out.println("intercepted");
    request.getHeaders().set(headerName, headerValue);
    return execution.execute(request, body);
}

}

@Service
public class RestClient {

@Autowired
private GetChangesMClient client;

public void makeCall(){
    RequestTO request = new RequestTO();


    ResponseTO response = this.client.execute(request);

}
}

这就是我得到的错误：

java.lang.reflect.InvocationTargetException
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.boot.maven.AbstractRunMojo$LaunchRunner.run(AbstractRunMojo.java:527)
    at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.web.client.HttpClientErrorException: 401 Unauthorized
    at org.springframework.web.client.DefaultResponseErrorHandler.handleError(DefaultResponseErrorHandler.java:78)
    at org.springframework.web.client.RestTemplate.handleResponse(RestTemplate.java:700)
    at org.springframework.web.client.RestTemplate.doExecute(RestTemplate.java:653)
    at org.springframework.web.client.RestTemplate.execute(RestTemplate.java:613)

更新 我改变了我的代码，使用拦截器来设置BasicAuth，它现在可以工作了。所以我不确定为什么SpringBoot basicAuthenticator方法不起作用

拦截器代码：

class BasicAuthInterceptor implements ClientHttpRequestInterceptor {

    private String username;
    private String password;

    public BasicAuthInterceptor(String username, String password) {
        this.username = username;
        this.password = password;
    }

    @Override
    public ClientHttpResponse intercept(HttpRequest httpRequest, byte[] bytes, ClientHttpRequestExecution clientHttpRequestExecution) throws IOException {
        HttpHeaders headers = httpRequest.getHeaders();
        headers.add(HttpHeaders.AUTHORIZATION, encodeCredentialsForBasicAuth(username, password));

        return clientHttpRequestExecution.execute(httpRequest, bytes);
    }

    public static String encodeCredentialsForBasicAuth(String username, String password) {      
        return "Basic " + Base64Utils.encodeToString((username + ":" + password).getBytes());
    }
}

然后我就这样使用它：

interceptors.add(new BasicAuthInterceptor("username", "pwd"));

我仍然想知道为什么我的第一种方法不起作用