我使用的是spring boot 1.3.3
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.3.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
修改
我使用Brixton.RC1作为我的春天云依赖
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Brixton.RC1</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
我的应用程序设置了这些注释:
@EnableDiscoveryClient
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
我有一个带有服务的休息控制器:
@RestController
public class MyController {
@Autowired
private MyService myService;
在我的服务中,我尝试使用自动安装的休息模板呼叫另一个尤里卡注册服务。
@Service
public class MyServiceImpl {
private final ParameterizedTypeReference<Answer> ANSWER = new ParameterizedTypeReference<Answer>() {};
@Autowired
private DiscoveryClient discoveryClient; //just here for testing
@Autowired
private RestTemplate restTemplate; //
public String someCoolMethod(String input){
log.info("Instance available? " + isInstanceAvailable());
final RequestEntity<String> requestEntity = RequestEntity.post(URI.create("http://myotherservice/othermethod")).accept(MediaType.APPLICATION_JSON).body(input);
final ResponseEntity<String> response = this.restTemplate.exchange(requestEntity, ANSWER);
log.info(response);
return response.getBody();
}
private Boolean isInstanceAvailable(){
List<ServiceInstance> instances = discoveryClient.getInstances("myotherservice");
for(ServiceInstance si : instances){
log.info(si.getUri().toString());
}
return instances.size() > 0;
}
}
我完全感到困惑,因为我在另一个项目中工作。这也是输出:
INFO http://192.168.1.10:1234
INFO Instance available? true
ERROR I/O error on POST request for "http://myotherservice/othermethod": myotherservice; nested exception is java.net.UnknownHostException: myotherservice
所以我可以看到这两项服务都在Eureka注册。 MyService能够:
但自动装配的RestTemplate正在抛出UnknownHostException。
答案 0 :(得分:12)
从{1}}开始,您需要在RC1中创建@Loadbalanced
RestTemplate
。
@Configuration
public class MyConfiguration {
@LoadBalanced
@Bean
RestTemplate restTemplate() {
return new RestTemplate();
}
}