使用restTemplate的带Ribbon/Eureka/Hystrix的spring-cloud无法设置连接/读取超时

Question

我已经使用spring-cloud构建了一个Spring Boot应用程序，并希望在我的客户机应用程序（也是一个微服务）中使用RestTemplate，这样我就可以继续使用mockMvc进行集成测试。我使用默认的ribbon/eureka/hystrix客户端设置，我的客户端微服务和eureka客户端在我调用的服务中。这是有效的（一旦我发现serviceIds是在restTemplate中标识服务endpoint的东西）。我的问题是，我似乎无法将restTemplate读取或连接超时从默认的300ms更改。

电话详情：

`@Configuration
 @EnableAutoConfiguration
 @ComponentScan
 @EnableConfigurationProperties
 @EnableHystrix
 @EnableEurekaClient
public class Application { ... public static void main(String[] args) {} ... }

@Component
class EricComponentToDoHystrix {   // apparently this has to be a component for hystrix to work btw
    @Autowired
    RestTemplate restTemplate;
    ..
    @HystrixCommand(fallbackMethod="defaultRestTemplateCall")
    public void doRestTemplateCall() 
        ResponseEntity<String> result = restTemplate.getForEntity("http://someservice/doSomething", String.class);  // actually make a call
    ..
    }
}`

使用Application.Properties包含：

spring:
  cloud:
    client:
      serviceIds:
        - someservice

someservice:
  ribbon:
    #listOfServers: localhost:7080
    #NIWSServerListClassName: com.netflix.niws.loadbalancer.DiscoveryEnabledNIWSServerList

    # the eureka vipAddress of the target service (Disabled)
    DeploymentContextBasedVipAddresses: someservice

    # Interval to refresh the server list from the source
    ServerListRefreshInterval: 1000

    # Connect timeout used by Apache HttpClient.. apparently not by restTemplate 
    ConnectTimeout: 30000

    # Read timeout used by Apache HttpClient.. apparently not by restTemplate
    ReadTimeout: 30000

eureka:
  client:
    #Region where eureka is deployed -For AWS specify one of the AWS regions, for other datacenters specify a arbitrary string
    #indicating the region.This is normally specified as a -D option (eg) -Deureka.region=us-east-1
    region: default

    #For eureka clients running in eureka server, it needs to connect to servers in other zones
    preferSameZone: false

    us-east-1:
      availabilityZones: default

  instance:
    #Virtual host name by which the clients identifies this service
    virtualHostName: ${spring.application.name}
    appGroupName: ericGroup


# disable Ribbon's cicruit breaker and rely soley on Hystrix.
# this helps to avoid confusion.
# see https://github.com/Netflix/ribbon/issues/15
niws:
  loadbalancer:
    availabilityFilteringRule:
      filterCircuitTripped: false

有人知道我需要设置哪些属性来修改RESTTemplate的默认超时吗？关于这个主题的文档很少，而且最近的代码甚至允许restTemplate用于Ribbon/Eureka Spring Boot默认值。也许这还没有建成。

Answer 1

您正在注入的resttemplate完全是普通的，除了ribboninterceptor，它为您选择URI中的物理主机（请参见https://github.com/spring-cloud/spring-cloud-netflix/blob/master/spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/ribbon/ribbonautocomfiguration.java)。超时和其他属性通过ClienthtPrequest在RestTemplate中控制。您可能只需将RibbonInterceptor插入到自己的RESTTemplate中，并设置ClienthtPrequestFactory来执行超时操作，例如。

@Component
class EricComponentToDoHystrix {
    private RestTemplate restTemplate;
    @Autowired
    public EricComponentToDoHystrix(RibbonInterceptor interceptor) {
         restTemplate = new RestTemplate();
         restTemplate.setInterceptors(Arrays.asList(interceptor));
         restTemplate.setRequestFactory(...);
    }
}