Spring Boot集成Spring Cloud Eureka进行服务治理的方法

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

server:
  port: 8761
eureka:
  client:
    registerWithEureka: false
    fetchRegistry: false
    serviceUrl:
      defaultZone: http://${eureka.instance.hostname}:${server.port}/eureka/

package cn.juwatech.eureka;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
@SpringBootApplication
@EnableEurekaServer
public class EurekaServerApplication {
    public static void main(String[] args) {
        SpringApplication.run(EurekaServerApplication.class, args);
    }
}

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

eureka:
  client:
    serviceUrl:
      defaultZone: http://localhost:8761/eureka/
    registerWithEureka: true
    fetchRegistry: true

package cn.juwatech.service;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
@SpringBootApplication
@EnableDiscoveryClient
public class ServiceApplication {
    public static void main(String[] args) {
        SpringApplication.run(ServiceApplication.class, args);
    }
}

package cn.juwatech.service.api;
public interface PaymentService {
    String pay(String orderId);
}

package cn.juwatech.service.impl;
import cn.juwatech.service.api.PaymentService;
import org.springframework.stereotype.Service;
@Service
public class PaymentServiceImpl implements PaymentService {
    @Override
    public String pay(String orderId) {
        return "Payment successful for order: " + orderId;
    }
}

package cn.juwatech.service;
// ... 省略其他导入
@EnableDiscoveryClient
@EnableFeignClients(basePackages = "cn.juwatech.service.api")
public class ServiceApplication {
    // ... 省略其他代码
}

package cn.juwatech.client.api;
import org.springframework.cloud.openfeign.FeignClient;
import org.springframework.web.bind.annotation.GetMapping;
@FeignClient(name = "payment-service")
public interface PaymentServiceClient {
    @GetMapping("/pay")
    String pay(@RequestParam("orderId") String orderId);
}

package cn.juwatech.client;
import cn.juwatech.client.api.PaymentServiceClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class PaymentController {
    @Autowired
    private PaymentServiceClient paymentServiceClient;
    @GetMapping("/processPayment")
    public String processPayment(String orderId) {
        return paymentServiceClient.pay(orderId);
    }
}