SpringCloudEureka 服务注册与发现以及调用-例子记录

 

例子github地址：https://github.com/winterme/eureka

A.eureka server

1.pom

    4.0.0

    com.zzq
    spring-cloud-eureka-server
    war
    1.0-SNAPSHOT

    spring-cloud-eureka-server

    
        UTF-8
        UTF-8
        1.8
        1.8
        1.8
    

    
        org.springframework.boot
        spring-boot-starter-parent
        2.0.1.RELEASE
    

    
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.springframework.cloud
            spring-cloud-starter-netflix-eureka-server
        
    

    
        
            
                org.springframework.cloud
                spring-cloud-dependencies
                Finchley.SR1
                pom
                import
            
        
    


    
        
            
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
    

2.yml

spring:
  application:
    name: euruka-server
server:
  port: 8761
eureka:
  client:
    fetch-registry: false
    register-with-eureka: false
    service-url:
      defaultZone: http://127.0.0.1:8761/eureka/

3.启动类

@SpringBootApplication
// 启动服务注册服务
@EnableEurekaServer
public class Application {

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

}

B.服务提供者

1.pom

    4.0.0

    com.zzq
    spring-cloud-eureka-produce
    war
    1.0-SNAPSHOT

    spring-cloud-eureka-produce

    
        UTF-8
        UTF-8
        1.8
        1.8
        1.8
    

    
        org.springframework.boot
        spring-boot-starter-parent
        2.0.1.RELEASE
    

    
        
            org.springframework.cloud
            spring-cloud-starter-netflix-eureka-client
        
        
            org.springframework.boot
            spring-boot-starter-web
        
    

    
        
            
                org.springframework.cloud
                spring-cloud-dependencies
                Finchley.SR1
                pom
                import
            
        
    


    
        
            
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
    

2.yml

spring:
  application:
    # 指定微服务的名称，后续在调用的时候，只需要使用该名称就可以进行服务访问
    name: springcloud-produce
server:
  port: 7070
eureka:
  client:
    service-url:
      # 服务注册中心的配置内容，指定服务注册中心的 url
      defaultZone: http://127.0.0.1:8761/eureka/

3.启动类

@SpringBootApplication
// 服务生产者
@EnableEurekaClient
public class Application {

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

}

4.控制器，此处的方便供其他服务调用

@RestController
public class GetInfo {

    @GetMapping("/get/{name}")
    public String getName(@PathVariable("name")String name){

        return name + (new Date().getTime());
    }

}

C.服务消费者

1.pom

    4.0.0

    com.zzq
    spring-cloud-eureka-produce
    war
    1.0-SNAPSHOT

    spring-cloud-eureka-produce

    
        UTF-8
        UTF-8
        1.8
        1.8
        1.8
    

    
        org.springframework.boot
        spring-boot-starter-parent
        2.0.1.RELEASE
    

    
        
            org.springframework.cloud
            spring-cloud-starter-openfeign
        
        
            org.springframework.cloud
            spring-cloud-starter-netflix-eureka-client
        
        
            org.springframework.boot
            spring-boot-starter-web
        
    

    
        
            
                org.springframework.cloud
                spring-cloud-dependencies
                Finchley.SR1
                pom
                import
            
        
    


    
        
            
            
                org.springframework.boot
                spring-boot-maven-plugin
            
        
    

2.yml

spring:
  application:
    name: springcloud-consume
eureka:
  client:
    service-url:
      defaultZone: http://127.0.0.1:8761/eureka/
server:
  port: 9090

# 设置超时,默认超时 5 秒，时间太短，得设置长一点
ribbon:
  ReadTimeout: 60000
  ConnectTimeout: 60000

3.编写远程调用接口

import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;

@FeignClient(value = "springcloud-produce")
public interface GetNameRemote {

    @GetMapping("/get/{name}")
    public String getName(@PathVariable("name") String name);

}

4.控制器里面调用

    @Autowired
    private GetNameRemote getNameRemote;

    @RequestMapping("/get/me/{name}")
    public String getName(@PathVariable("name")String name){
        return getNameRemote.getName(name);
    }

5.启动

@SpringBootApplication
//启用服务注册与发现
@EnableDiscoveryClient
//启用feign进行远程调用
@EnableFeignClients
public class Application {

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

}

 

效果:

在 消费者项目里面访问  http://127.0.0.1:9090/get/me/licm 远程调用 springcloud-produce 得 getName 方法，返回数据

 

思考：一个项目能否同时作为 服务提供者 和 服务消费者呢