搭建springcloud的feign教程

1.创建名为feign-consumer spring boot项目

<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.4.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>l.8</java.version> </properties> <dependencies> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.16.18</version> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-starter-eureka</artifactId> <version>1.4.6.RELEASE</version> </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>Brixton.SR5</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> @SpringBootApplication @EnableDiscoveryClient @EnableEurekaClient @EnableFeignClients public class Application { public static void main(String[] args) { new SpringApplicationBuilder(Application.class).web(true).run(args); } } @RestController public class ConsumerController { @Autowired HelloService helloService; @RequestMapping(value = "/feign-consumer", method = RequestMethod.GET) public String helloConsumer() { return helloService.helloConsumer(); } } //如果是spring管理的对象，需要使用注解否则创建不成功 @Component public class FallbackTest implements HelloService{ @Override public String helloConsumer() { return "baocuo"; } } @FeignClient(value="ribbon-consumer",fallback =FallbackTest.class) public interface HelloService { @RequestMapping("/ribbon-consumer") String helloConsumer(); }

ribbon-consumer是服务名 @RequestMapping("/ribbon-consumer")是url //value="ribbon-consumer服务名,具有Ribbon负载均衡的能力 //allback =FallbackTest.class 具有Hystrix熔断功能

spring.application.name=feign-consumer server.port=9005 eureka.client.serviceUrl.defaultZone = http://localhost:1111/eureka/ 不加这个会报错 ribbon.eureka.enabled=true

Eureka 消费者客户端 Feign客户端