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一、创建SpringBoot的项目springcloud-eureka-customer,操作同上一篇
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二、配置文件
1、pom.xml
4.0.0
org.springframework.boot
spring-boot-starter-parent
2.1.4.RELEASE
com.jane
springcloud-eureka-customer
0.0.1-SNAPSHOT
springcloud-eureka-customer
Demo project for Spring Boot
1.8
Greenwich.SR1
org.springframework.cloud
spring-cloud-starter-netflix-eureka-client
org.springframework.boot
spring-boot-starter-test
test
org.springframework.boot
spring-boot-starter-web
org.springframework.cloud
spring-cloud-starter-openfeign
2.0.2.RELEASE
org.springframework.cloud
spring-cloud-openfeign-core
2.0.2.RELEASE
org.springframework.cloud
spring-cloud-dependencies
${spring-cloud.version}
pom
import
org.springframework.boot
spring-boot-maven-plugin
2、启动文件
package com.jane.springcloudeurekacustomer;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import org.springframework.cloud.openfeign.EnableFeignClients;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScans;
@SpringBootApplication
@EnableDiscoveryClient
@EnableFeignClients(basePackages = "com.jane")
@ComponentScan("com.jane")
public class SpringcloudEurekaCustomerApplication {
public static void main(String[] args) {
SpringApplication.run(SpringcloudEurekaCustomerApplication.class, args);
}
}
3、application.properties
server.port=6020
spring.application.name=springcloud-eureka-customer
eureka.client.service-url.defaultZone=http://127.0.0.1:6001/eureka/
eureka.client.fetchRegistry=true
4、Fegin客户端TestFeginServiceClient
package com.jane.service;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
@FeignClient("springcloud-eureka-client-order")
public interface TestFeginServiceClient {
@RequestMapping(value = "/test", method = RequestMethod.GET)
public String test();
}
5、调用文件TestController
package com.jane.controller;
import com.jane.service.TestFeginServiceClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class TestController {
@Autowired
TestFeginServiceClient testService;
/**
* 普通Restful
* @return
*/
@RequestMapping(value = "/local", method = RequestMethod.GET)
public String local() {
return "本地local调用";
}
/**
* 利用Fegin客户端实现RPC调用order服务
* @return
*/
@RequestMapping(value = "/order/test", method = RequestMethod.GET)
public String test(){
return testService.test();
}
}
三、启动文件
1、服务中心
2、服务消费
2.1本地调用
2.2RPC调用
四、FeignClient本身集成了本地负载均衡Netflix的Ribbon,所以可以轻松实现负载均衡。
1、修改client-order端口号6011,多启动一个服务
2、消费服务多次调用结果如下: