Eureka注册中心服务端
引入依赖
<dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
编写启动类@EnableEurekaServer
package com.gwf;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;/*** @Author gwf* @Data 2024/2/17 下午5:24**/
@SpringBootApplication
@EnableEurekaServer
public class EurekaServiceApplication {public static void main(String[] args) {SpringApplication.run(EurekaServiceApplication.class, args);}
}
编写配置文件
# 访问端口
server:port: 10086#项目名
spring:application:name: eureka-server# eureka-service配置
eureka:client:service-url:defaultZone: http://localhost:10086/eureka/Eureka服务注册
引入依赖
<dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-netflix-eureka-client</artifactId><version>4.0.2</version>
</dependency>
配置
userservice
server:port: 9000spring:application:name: userserviceeureka:client:service-url:defaultZone: http://127.0.0.1:10086/eureka
orderservice
server:port: 9000spring:application:name: orderservice
eureka:client:service-url:defaultZone: http://127.0.0.1:10086/eureka
多次启动userService
复制服务修改端口启动
远程调用
给RestTemplate这个Bean添加一个@LoadBalanced注解
package com.gwf.orderservice;import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.web.client.RestTemplate;@SpringBootApplication
public class OrderServiceApplication {public static void main(String[] args) {SpringApplication.run(OrderServiceApplication.class, args);}@Bean@LoadBalancedpublic RestTemplate restTemplate() {return new RestTemplate();}
}
修改调用
package com.gwf.orderservice;import com.gwf.orderservice.entity.Order;
import com.gwf.orderservice.entity.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;/*** @Author gwf* @Data 2024/2/17 下午3:39**/
@RestController
@RequestMapping("/order")
public class OrderController {@Autowiredprivate RestTemplate restTemplate;@RequestMapping("/{orderId}")public Order queryOrderByUserId(@PathVariable("orderId")Long orderId){Order order = new Order();order.setId(orderId);order.setUserId(1L);order.setName("手机");order.setNum(2);order.setPrice(1999L);String url ="http://userservice:8081/user/"+order.getUserId();User user = restTemplate.getForObject(url, User.class);order.setUser(user);return order;}
}
