一、服务提供者
1、控制器
package spring.cloud.controller;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.UUID;
/**
* @author dc
* @date 2020/7/25 - 16:43
*/
@RestController
@Slf4j
public class PaymentController {
@Value("${server.port}")
private String serverPort;
@GetMapping("/payment/first")
public String doFirst() {
return "springcloud with zookeeper : " + serverPort + "\t" + UUID.randomUUID().toString();
}
}
2、启动类
package spring.cloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
import javax.activation.MailcapCommandMap;
/**
* @author dc
* @date 2020/7/25 - 16:37
*/
@SpringBootApplication
@EnableDiscoveryClient //该注解用于向使用consul或者zookeeper作为注册中心时注册服务
public class Provider8084Main {
public static void main(String[] args) {
SpringApplication.run(Provider8084Main.class, args);
}
}
3、配置文件
#指定主机的端口号
server.port=8084
#指定服务的名称
spring.application.name=payment-provider8084
#连接本机的zookeeper注册中心
spring.cloud.zookeeper.connect-string=127.168.1.16:2181
二、服务消费者
1、控制器
package com.springcloud.controller;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import javax.annotation.Resource;
/**
* @author dc
* @date 2020/7/26 - 9:29
*/
@RestController
@Slf4j
public class MyController {
//声明调用服务的地址
public static final String INVOKE_URL = "http://payment-provider8084";
//从spring容器注入bean
@Resource
private RestTemplate restTemplate;
@GetMapping("/consumer/zk")
public String doFirst() {
String result = restTemplate.getForObject(INVOKE_URL + "/payment/first", String.class);
return result;
}
}
2、配置类
package com.springcloud.config;
import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
/**
* @author dc
* @date 2020/7/26 - 9:25
*/
@Configuration //指明该类为一个配置类
public class ApplicationContextConfig {
@Bean //注入到spring容器
@LoadBalanced //指明该实例可以负载均衡
public RestTemplate getRestTemplate() {
return new RestTemplate();
}
}
3、主配置类
#指定服务的端口号
server.port=81
#指定服务的名称
spring.application.name=payment-consumerzk81
#连接zookeeper注册中心
spring.cloud.zookeeper.connect-string=192.168.1.16:2181
4、启动类
package com.springcloud;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
/**
* @author dc
* @date 2020/7/26 - 9:22
*/
@SpringBootApplication
@Slf4j
@EnableDiscoveryClient //开启zookeeper注册中心服务发现
public class Consumerzk81Main {
public static void main(String[] args) {
SpringApplication.run(Consumerzk81Main.class, args);
}
}