我有一个 Eureka 服务注册服务器、一个公共(public) API 服务和一个使用 RestTemplate 从公共(public) API 调用的服务的简单设置。 Eureka告诉我服务注册成功,但是当我调用服务时

@Service
public class MyServiceService {

    @Autowired
    private RestTemplate restTemplate;

    private final String serviceUrl;

    public MyServiceService() {
        this.serviceUrl = "http://MY-SERVICE";
    }

    public Map<String, String> getTest() {

        Map<String, String> vars = new HashMap<>();
        vars.put("id", "1");

        restTemplate.setRequestFactory(new HttpComponentsClientHttpRequestFactory());

        return restTemplate.postForObject(serviceUrl+"/test", "", Map.class, vars);
    }
}

我收到以下异常
Servlet.service() for servlet [dispatcherServlet] in context with path [] threw exception [Request processing failed;
  nested exception is org.springframework.web.client.ResourceAccessException: I/O error on POST request for "http://MY-SERVICE/test": MY-SERVICE;
  nested exception is java.net.UnknownHostException: MY-SERVICE] with root cause java.net.UnknownHostException: MY-SERVICE

我创建了一个示例项目来说明我的设置,也许有人可以看看它并告诉我我的设置有什么问题。

https://github.com/KenavR/spring-boot-microservices-example

谢谢

最佳答案

正如 patrick-grimard 建议的那样,切换到 Brixton 并更改代码需要解决这些问题。工作解决方案在 Github 上。

还将发布的 id 从请求参数更改为请求正文,这也改变了我将其添加到请求中的方式。

服务端点

@RequestMapping(method = RequestMethod.POST, produces = "application/json; charset=utf-8")
public @ResponseBody Map<String, String> getTest(@RequestBody Map<String, Long> params) {

    Map<String, String> response = new HashMap<>();

    response.put("name", "My Service");

    return response;
}

RestTemplate 创建
@Configuration
public class PublicAPIConfiguration {
    @LoadBalanced
    @Bean
    RestTemplate restTemplate() {
        return new RestTemplate();
    }
}

调用服务
@Service
public class MyServiceService {

    @Autowired
    private RestTemplate restTemplate;

    private final String serviceUrl;

    public MyServiceService() {
        this.serviceUrl = "http://my-service";
    }

    public Map<String, String> getTest() {

        Map<String, Long> vars = new HashMap<>();
        vars.put("id", 1L);

        return restTemplate.postForObject(serviceUrl+"/test", vars, Map.class);
    }
}

关于java - 微服务 - RestTemplate UnknownHostException,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/37159662/

10-11 09:21