spring coud feign

1. 依赖

<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.4.RELEASE</version>
</parent>

<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-feign</artifactId>
</dependency>

</dependencies>

<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.SR7</version>
<type>pom</type>
<scope>import</scope>
</dependency>

</dependencies>
</dependencyManagement>
</project>

2. 启动类

@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients
public class FeignApplication {

public static void main(String[] args) {
SpringApplication.run(FeignApplication.class, args);
}

@Bean
protected Logger.Level level(){
return Logger.Level.FULL;
}
}

3. feign

@FeignClient(name="hello-service",fallback=fallbackHelloFeignClient.class)
public interface HelloFeignClient {

@RequestMapping(value="/hello")
public String hello() throws InterruptedException;

@Component
static class fallbackHelloFeignClient implements HelloFeignClient{

@Override
public String hello() throws InterruptedException {
return “error”;
}

}
}

4. 业务

@RestController
public class HelloFeignController {

@Autowired
private HelloFeignClient client;

@GetMapping("/hello")
public String hello() throws InterruptedException {
return client.hello();
}
}

5 配置

server:
port: 8095
spring:
application:
name: feign-consumer
eureka:
client:
serviceUrl:
defaultZone: http://ym-eureka-server1:8759/eureka/
instance:
preferIpAddress: true
ribbon:
ConnectTimeout: 6000
ReadTimeout: 6000
hystrix:
command:
default:
execution:
isolation:
thread:
timeoutInMilliseconds: 15000
feign:
hystrix:
enabled: true
logging:
level:
com:
ym: debug

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