azure - 面临由 : java.net.UnknownHostException : login. microsoftonline.com 引起的问题

Question

我在 springboot 应用程序中使用restTemplate 调用microsoft Azureurl网址:-https://login.microsoftonline.com/{{tenantId}}/oauth2/v2.0/token

RestTemplate RestTemplate = new RestTemplate();

    HttpHeaders headers = new HttpHeaders();
    headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);

    MultiValueMap<String, String> map = new LinkedMultiValueMap<>();
    map.add("grant_type","client_credentials");
    map.add("client_id","xxxxxxxxxxxxxxxxxxxxxxxxxx");
    map.add("client_secret","xxxxxxxxxxxxxxxxxx");
    map.add("scope","https://graph.microsoft.com/.default");

    HttpEntity<MultiValueMap<String, String>> entity = new HttpEntity<>(map, headers);

    ResponseEntity<String> response =
            restTemplate.exchange("https://login.microsoftonline.com/xxxxxxxxxx-xxxxxx-c666dbeda42c\n/oauth2/v2.0/token",
                    HttpMethod.POST,
                    entity,
                    String.class);

    if (response.getStatusCode() == HttpStatus.OK) {
        System.out.println("Request Successful");
    } else {
        System.out.println("Request Failed");
    }

在运行上述示例调用以连接 Azure 时，我们收到以下异常: Caused by: java.net.UnknownHostException: login.microsoftonline.com

后来在家里尝试过，没有代理连接到互联网，然后我能够成功获取输出，而不会出现“UnknownHostException”错误。那么如何解决这个问题。

Answer 1

您的网址似乎不规范https://login.microsoftonline.com/xxxxxxxxxx-xxxxxx-c666dbeda42c\n/oauth2/v2.0/token，尝试将其更改为:https://login.microsoftonline.com/xxxxxxxxxx-xxxxxx-c666dbeda42c/oauth2/v2.0/token 。删除 \n。