服務注冊

1.添加Spring Cloud Zookeeper依賴:

<dependencies><dependency><groupId>org.springframework.cloud</groupId><artifactId>spring-cloud-starter-zookeeper-discovery</artifactId><exclusions><exclusion><groupId>org.apache.zookeeper</groupId><artifactId>zookeeper</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.apache.zookeeper</groupId><artifactId>zookeeper</artifactId><version>3.6.2</version><exclusions><exclusion><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId></exclusion></exclusions></dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency></dependencies>

2.在服務配置文件中添加zookeeper配置:

spring: cloud: zookeeper: connect-string: localhost:2181 #zookeeper地址

3.啟動zookeeper服務器和服務（我這邊是啟動了兩個服務，分別是provider和consumer），然后在zookeeper客戶端中可以查看已經注冊到zookeeper中的服務:

服務發現

1.創建controller

消費者controller:

package com.buhe.zk.controller;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.cloud.client.ServiceInstance;import org.springframework.cloud.client.discovery.DiscoveryClient;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RestController;import org.springframework.web.client.RestTemplate;import java.util.List;@RestControllerpublic class ZkConsumerController { private static final String SERVICE_NAME = 'provider'; private static final String SERVICE_PATH = '/zk/provider'; @Autowired private RestTemplate restTemplate; @Autowired private DiscoveryClient discoveryClient; /** * 調用提供者服務 * @return */ @GetMapping('/zk/consumer') public String zkConsumer(){ return '我吃了' + restTemplate.getForObject('http://' + SERVICE_NAME + SERVICE_PATH, String.class); } /** * 獲取提供者服務URL * @return */ @GetMapping('/zk/url') public String serviceUrl() { List<ServiceInstance> list = discoveryClient.getInstances(SERVICE_NAME); if (list != null && list.size() > 0 ) { return list.get(0).getUri().toString() + SERVICE_PATH; } return null; }}

要使用RestTemplate別忘了加配置：

@Bean@LoadBalancedpublic RestTemplate restTemplate(){return new RestTemplate();}

提供者controller:

package com.buhe.zk.controller;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RestController;@RestControllerpublic class ZkProviderController { @GetMapping('/zk/provider') public String zkProvider(){ return '10個蘋果'; }}

2.服務調用

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