OAuth2RestTemplate与Ribbon Eureka

Question

我正在使用Spring Cloud和Netflix OSS Eureka和Ribbon开发微服务。我有另一个服务作为oauth-server运行，它提供OAuth2令牌。我的所有微服务都向Eureka注册，包括oauth-server。如果我使用oauth-server的硬编码url作为“clientCredentialsResourceDetails.setAccessTokenUri（”http://localhost:9000/oauth/token“）;”，但我的整个解决方案是有效的，但是当我尝试使用Eureka Discovered url of oauth-server，如“clientCredentialsResourceDetails.setAccessTokenUri（”http://oauth-server/oauth/token“）;”我收到错误： java.net.UnknownHostException： oauth-server

MyConfig.java

@Bean(name = "myOauth2RestTemplate")
@LoadBalanced
public OAuth2RestOperations restTemplate(RestTemplateCustomizer customizer,
                                             ClientCredentialsResourceDetails resourceDetails) {
    OAuth2RestTemplate restTemplate = new OAuth2RestTemplate(resourceDetails);
    ClientCredentialsAccessTokenProvider provider = new ClientCredentialsAccessTokenProvider();
    restTemplate.setAccessTokenProvider(provider);
    customizer.customize(restTemplate);
    return restTemplate;
}

@Bean
public ClientCredentialsResourceDetails resourceDetails() {
    ClientCredentialsResourceDetails clientCredentialsResourceDetails = new ClientCredentialsResourceDetails();
    clientCredentialsResourceDetails.setAccessTokenUri("http://oauth-server/oauth/token");
    clientCredentialsResourceDetails.setId("1");
    clientCredentialsResourceDetails.setClientId("candy");
    clientCredentialsResourceDetails.setClientSecret("123");    
    clientCredentialsResourceDetails.setScope(Arrays.asList("read", "write"));
    clientCredentialsResourceDetails.setGrantType("client_credentials");
    return clientCredentialsResourceDetails;
}

MyController.java

@Autowired
@Qualifier("myOauth2RestTemplate")
@LoadBalanced
private OAuth2RestTemplate myOauth2RestTemplate;

@GetMapping("/secure/hello")
public String getSecureData() {
    String result = myOauth2RestTemplate.getForObject("http://securems/secure/hello", String.class);
    return result;
}

我已经搜索了很多文档和在线帮助，但这些解决方案都不起作用。我认为这应该是一个简单的配置问题，现在已经耗尽了我两天的精力。

Answer 1

我终于能够用下面的代码让它工作：

@Bean
@LoadBalanced
public OAuth2RestTemplate restTemplate(SpringClientFactory clientFactory) {
    OAuth2RestTemplate restTemplate = new OAuth2RestTemplate(resourceDetails());
    RibbonLoadBalancerClient ribbonLoadBalancerClient = new RibbonLoadBalancerClient(clientFactory);
    LoadBalancerInterceptor loadBalancerInterceptor = new LoadBalancerInterceptor(ribbonLoadBalancerClient);
    ClientCredentialsAccessTokenProvider accessTokenProvider = new ClientCredentialsAccessTokenProvider();
    accessTokenProvider.setInterceptors(Arrays.asList(loadBalancerInterceptor));
    restTemplate.setAccessTokenProvider(accessTokenProvider);

    return restTemplate;
}