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我正在使用 Spring Cloud 和 Netflix OSS Eureka 和 Ribbon 开发微服务。我有另一个作为 oauth-server 运行的服务，它提供 OAuth2 令牌。我所有的微服务都在 Eureka 注册，包括 oauth-server。如果我将 oauth-server 的硬编码 url 用作“clientCredentialsResourceDetails.setAccessTokenUri("http://localhost:9000/oauth/token");”，我的整个解决方案就可以工作。但是当我尝试使用 oauth-server 的 Eureka Discovered url 时，例如 "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努力。

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1 回答 1

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我终于能够使用以下代码使其工作：

@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;
}
于 2020-06-26T18:34:45.070 回答