接下來使用Nacos作為服務註冊中心，一個服務的提供者，一個服務消費者。

環境：springboot2.2.10.RELEASE + nacos1.3.2

一、服務提供者

pom.mxl

<properties>		<java.version>1.8</java.version>		<spring-cloud.version>Hoxton.SR1</spring-cloud.version>		<spring-cloud-alibaba-dependencies.version>0.9.0.RELEASE</spring-cloud-alibaba-dependencies.version>		<spring-cloud-alibaba.version>2.2.3.RELEASE</spring-cloud-alibaba.version>	</properties>	<dependencies>		<dependency>			<groupId>org.springframework.boot</groupId>			<artifactId>spring-boot-starter-web</artifactId>		</dependency>		<dependency>			<groupId>org.springframework.boot</groupId>			<artifactId>spring-boot-starter-actuator</artifactId>		</dependency>		<dependency>            <groupId>com.alibaba.cloud</groupId>            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>        </dependency>	</dependencies>	<dependencyManagement>		<dependencies>			<dependency>				<groupId>com.alibaba.cloud</groupId>				<artifactId>spring-cloud-alibaba-dependencies</artifactId>				<version>${spring-cloud-alibaba.version}</version>				<type>pom</type>				<scope>import</scope>			</dependency>		</dependencies>	</dependencyManagement>

application.yml配置

server:  port: 9000---spring:  application:    name: nacos-provider---spring:  cloud:    nacos:      username: dev      password: 123123      discovery:        enabled: true        serverAddr: localhost:8848        namespace: 3d857485-5f81-4f1b-9a7e-86586d05261f

java相關類

1、啟動類添加註解@EnableDiscoveryClient

@SpringBootApplication@EnableDiscoveryClientpublic class NacosProviderApplication {	public static void main(String[] args) {		SpringApplication.run(NacosProviderApplication.class, args);	}}

2、web測試介面

@RestController@RequestMapping("discovery")public class DiscoveryController {      @NacosInjected    private NamingService namingService;    @Resource    private DiscoveryClient discoverClient ;    @GetMapping(value = "/get")    public Object get(@RequestParam String serviceName) throws Exception {    	Map<String, Object> res = new HashMap<>() ;    	res.put("services", discoverClient.getServices()) ;    	res.put("instances", discoverClient.getInstances(serviceName)) ;    	res.put("port", 9000) ;    	return res  ;    }}

測試

啟動服務檢視nacos控制檯檢視服務是否註冊上來了

訪問測試介面：

到此服務提供者開發完成。

二、服務消費者

pom.xml與服務提供者一樣就不貼了。

application.yml配置：

server:  port: 9100---spring:  cloud:    nacos:      username: dev      password: 123123      discovery:        enabled: true        serverAddr: localhost:8848        namespace: 3d857485-5f81-4f1b-9a7e-86586d05261f ---spring:  application:    name: nacos-consumer ---ribbon:  eagerLoad:    enabled: true

配置RestTemplate

@Configurationpublic class WebConfig {		@LoadBalanced	@Bean	public RestTemplate restTemplate() {		return new RestTemplate() ;	}	}

介面呼叫：

@RestController@RequestMapping("consumer")public class ConsumerController {		@Resource	private RestTemplate restTemplate ;		@GetMapping("/get")	public Object invoke(String serviceName) {		return restTemplate.getForObject("http://nacos-provider/discovery/get?serviceName=" + serviceName, Object.class);	}	}

這裡直接透過服務名呼叫（nacos-provider）

啟動服務檢視Nacos

正常！

測試：

正常！

完畢！！！