一.Nacos注册中心
1.客户端添加依赖
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>2.1.0.RELEASE</version>
</dependency>
2.文件配置
server:
port: 83
spring:
application:
name: nacos-order-consumer
cloud:
nacos:
discovery:
server-addr: localhost:8848 #配置nacos地址
#消费者将要去访问微服务的名称(成功注册进nacos的微服务提供者)
server-url:
nacos-user-servicer: http://nacos-payment-pro
3.config配置
@Configuration
public class ApplicationContextConfig {
@Bean
@LoadBalanced //这天千万别忘了
public RestTemplate getRestTemplate(){
return new RestTemplate();
}
}
4.controller
/**
* @author qxL
* @create 2022-02-04 15:14
*/
@RestController
@Slf4j
public class OrderNacosController {
@Resource
private RestTemplate restTemplate;
@Value("${server-url.nacos-user-servicer}")
private String serverURl;
@GetMapping(value = "/consumer/payment/nacos/{id}")
public String paymentInfo(@PathVariable("id") Integer id){
return restTemplate.getForObject(serverURl+"/payment/nacos/"+id,String.class);
}
}
5.启动类
@EnableDiscoveryClient
@SpringBootApplication
public class OrderNacosMain83 {
public static void main(String[] args) {
SpringApplication.run(OrderNacosMain83.class,args);
}
}
二.服务端
服务端添加两个端口9001和9002,配置一样,改端口即可
Nacos添加了spring-cloud-starter-alibaba-nacos-discovery后就包含ribbon依赖,实现了负载均衡
1.添加依赖
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>2.1.0.RELEASE</version>
</dependency>
2.配置文件
server:
port: 9001
spring:
application:
name: nacos-payment-provider
cloud:
nacos:
discovery:
server-addr: localhost:8848 #配置nacos地址
management:
endpoints:
web:
exposure:
include: '*
3.controller
@RestController
public class PaymentController {
@Value("${server.port}")
private String serverPort;
@GetMapping(value = "/payment/nacos/{id}")
public String getPayment(@PathVariable("id") Integer id){
return "nacos registry, serverPort:"+serverPort+"\t id"+id;
}
}
4.启动类
@SpringBootApplication
@EnableDiscoveryClient
public class PaymentMain9001 {
public static void main(String[] args) {
SpringApplication.run(PaymentMain9001.class,args);
}
}
5.启动客户端和服务端的端口
在nacos的控制台可以看到服务启动成功
访问端口
可见两个端口交替访问。
三.Nacos配置中心
1.添加依赖
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
<version>2.2.5.RELEASE</version>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
<version>2.1.0.RELEASE</version>
</dependency>
2.配置文件
spring:
profiles:
active: dev #表示开发环境
bootstrap.yml
server:
port: 3377
spring:
application:
name: nacos-config-client
cloud:
nacos:
discovery:
server-addr: localhost:8848 #配置nacos地址
config:
server-addr: localhost:8848 #nacos作为配置中心地址
file-extension: yaml #指定yaml格式的配置
#${prefix}-${spring.profiles.active}.${file-extension}
#nacos-config-client-dev.yaml
3.controller
@RestController
@RefreshScope //支持nacos的动态刷新功能
public class ConfigClientController {
@Value("${config.info}")
private String configInfo;
@GetMapping("/config/info")
public String GetConfigInfo(){
return configInfo;
}
}
4.启动类
@SpringBootApplication
@EnableDiscoveryClient
public class NacosConfigClientMain3377 {
public static void main(String[] args) {
SpringApplication.run(NacosConfigClientMain3377.class,args);
}
}