1. 依赖

<parent>

<groupId>org.springframework.boot</groupId>

<artifactId>spring-boot-starter-parent</artifactId>

<version>1.5.4.RELEASE</version>

</parent>

<properties>

<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

<java.version>1.8</java.version>

</properties>

<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